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Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Near-infrared light scattering by particles in coastal waters  

E-Print Network [OSTI]

Near-infrared light scattering by particles in coastal waters David Doxaran* , Marcel Babin extend over the near-infrared spectral region to up to 870 nm. The measurements were conducted in three in the near-infrared very closely matched a - spectral dependence, which is expected when the particle size

Babin, Marcel

2

The Cosmic Near Infrared Background: Remnant Light from Early Stars  

E-Print Network [OSTI]

The redshifted ultraviolet light from early stars at z ~ 10 contributes to the cosmic near infrared background. We present detailed calculations of its spectrum with various assumptions about metallicity and mass spectrum of early stars. We show that if the near infrared background has a stellar origin, metal-free stars are not the only explanation of the excess near infrared background; stars with metals (e.g. Z=1/50 Z_sun) can produce the same amount of background intensity as the metal-free stars. We quantitatively show that the predicted average intensity at 1-2 microns is essentially determined by the efficiency of nuclear burning in stars, which is not very sensitive to metallicity. We predict \

Elizabeth Fernandez; Eiichiro Komatsu

2005-08-08T23:59:59.000Z

3

F Labeling of a Near-Infrared Fluorophore Enables Positron Emission Tomography and Optical Imaging of Sentinel Lymph Nodes  

E-Print Network [OSTI]

Fast 18 F Labeling of a Near-Infrared Fluorophore Enables Positron Emission Tomography and Optical- with a near-infrared fluorophore into a single molecule. Attachment to targeting ligands enables localization by positron emission tomography (PET) and near-infrared fluorescence (NIRF). Our first application

Tsien, Roger Y.

4

NREL experiments show that disordered inverse opals significantly scatter and trap near-infrared light, with  

E-Print Network [OSTI]

NREL experiments show that disordered inverse opals significantly scatter and trap near-infrared wavelengths in the near-infrared (NIR), which is important to a number of technologies. This discovery.neale@nrel.gov Reference: N.R. Neale, B.G. Lee, S.H. Kang, and A.J. Frank."Near-Infrared Light Trapping in Disordered

5

Non-Invasive Neuroimaging Using Near-Infrared Light Gary Strangman, David A. Boas, and Jeffrey P. Sutton  

E-Print Network [OSTI]

REVIEW Non-Invasive Neuroimaging Using Near-Infrared Light Gary Strangman, David A. Boas, and Jeffrey P. Sutton This article reviews diffuse optical brain imaging, a technique that employs near-infrared function capitalizes on the absorption and scattering properties of near-infrared light to provide

6

STUDIES OF SOLAR WHITE-LIGHT FLARES AND SMALL-SCALE MAGNETIC STRUCTURES OBSERVED IN THE NEAR INFRARED  

E-Print Network [OSTI]

IN THE NEAR INFRARED by Yan Xu Using the most advanced infrared imaging technology as developed by NJIT, are presented in this dissertation. The investigations focus on near-infrared observations at 1.56 µm, which of near infrared (NIR) solar physics: (1) the first detection and understanding of white-light flares

7

High-resolution mapping of interstellar clouds with near-infrared scattered light  

E-Print Network [OSTI]

With current wide-field near-infrared (NIR) instruments the scattered light in the near-infrared can be mapped over large areas. Below A_V ~ 10 the surface brightness is directly proportional to the column density, and at slightly higher column densities the saturation of the intensity values can be corrected using the ratios of the intensity in different NIR bands. NIR scattered light provides a promising new method for the mapping of quiescent interstellar clouds. We develop a method to convert the observed near-infrared surface brightness into estimates of the column density. We study and quantify the effect that different error sources could have on the accuracy of such estimates. We also propose to reduce systematic errors by combining surface brightness data with extinction measurements derived from the near-infrared colour excess of background stars. Our study is based on a set of three-dimensional magnetohydrodynamic turbulence simulations. Maps of near-infrared scattered light are obtained with radiative transfer calculations, and the maps are converted back into column density estimates using the proposed method. The results are compared with the true column densities. Extinction measurements are simulated using the same turbulence simulations, and are used as a complementary column density tracer. We find that NIR intensities can be converted into a reliable estimate of the column density in regions with A_V up to almost 20mag.

M. Juvela; V. -M. Pelkonen; P. Padoan; K. Mattila

2006-03-14T23:59:59.000Z

8

Tunable Transmittance of Near-infrared and Visible Light in Reconstructed  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Tunable Transmittance of Near-infrared and Visible Light in Reconstructed Tunable Transmittance of Near-infrared and Visible Light in Reconstructed Nanocrystal-in-Glass Composite Films Thursday, October 31, 2013 The bonding arrangement in amorphous materials plays a dominant role in determining their electrochemical, optical and transport properties. However, it remains a challenge to manipulate amorphous structures in a controlled manner. Recently, scientists at the Molecular Foundry at Lawrence Berkeley National Laboratory (LBNL) developed synthetic protocols for incorporating well-defined nanocrystals into amorphous materials [1,2]. This "nanocrystal-in-glass" approach not only allows combining two functional components in one material, but it could also provide a handle, by virtue of the interfacial covalent bond, for manipulating the glass

9

Reanalysis of near-infrared extragalactic background light based on the IRTS observation  

E-Print Network [OSTI]

We reanalyzed the data from the Infrared Telescope in Space (IRTS) based on up-to-date observations of zodiacal light, integrated star light and diffuse Galactic light. We confirmed the existence of residual isotropic emission, which is slightly fainter, but at nearly the same level as previously reported. At wavelengths longer than 2 {\\mu}m, our result is fairly consistent with recent observations with Japanese infrared astronomy satellite, AKARI. We performed all of our analyses using two different models of zodiacal light (Kelsall and Wright models). In both cases, we detect residual isotropic emission that is significantly brighter than the integrated light of galaxies (though slightly fainter in the case of the Wright model). Thus, we confirm the existence of excess near-infrared emission, independent of the zodiacal light model used. The spectral shape of the excess isotropic emission is similar to that of the recently observed spectrum of excess fluctuations, which suggests the excess brightness and fl...

Matsumoto, T; Pyo, J; Tsumura, K

2015-01-01T23:59:59.000Z

10

Vascular targeted single-walled carbon nanotubes for near-infrared light therapy of cancer This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-Print Network [OSTI]

Vascular targeted single-walled carbon nanotubes for near-infrared light therapy of cancer.1088/0957-4484/22/45/455101 Vascular targeted single-walled carbon nanotubes for near-infrared light therapy of cancer Whitney M uptake of the conjugate. This targeted cell killing was further enhanced when coupled with near-infrared

Resasco, Daniel

11

POLARIZATION AND VARIATION OF NEAR-INFRARED LIGHT FROM FERMI/LAT {gamma}-RAY SOURCES  

SciTech Connect (OSTI)

We present the results of our follow-up observation program of {gamma}-ray sources detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope. Twenty-six blazars and thirty-nine sources unidentified at other wavelengths were targeted at the Infrared Survey Facility 1.4 m telescope equipped with the SIRIUS/SIRPOL imager and polarimeter. H-band magnitudes of the blazars at the epoch of 2010 December-2011 February are presented, which reveal clear flux variation since the Two Micron All Sky Survey observations and can be useful data for variation analyses of these objects in longer periods. We also find that nearly half of the {gamma}-ray blazars are highly (>10%) polarized in near-infrared wavelengths. Combining the polarization and variation properties, most ({approx}90%) of the blazars are clearly distinguished from all other types of objects at high Galactic latitudes. On the other hand, we find only one highly polarized and/or variable object in the fields of unidentified sources. This object is a counterpart of the optical variable source PQV1 J131553.00-073302.0 and the radio source NVSS J131552-073301 and is a promising candidate of new {gamma}-ray blazars. From the measured polarization and variation statistics, we conclude that most of the Fermi/LAT unidentified sources are not likely similar types of objects to the known {gamma}-ray blazars.

Fujiwara, M.; Matsuoka, Y. [Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602 (Japan); Ienaka, N., E-mail: matsuoka@a.phys.nagoya-u.ac.jp [Institute of Astronomy, The University of Tokyo, Osawa 2-21-1, Mitaka, Tokyo 181-0015 (Japan)

2012-10-01T23:59:59.000Z

12

THE COSMIC INFRARED BACKGROUND EXPERIMENT (CIBER): A SOUNDING ROCKET PAYLOAD TO STUDY THE NEAR INFRARED EXTRAGALACTIC BACKGROUND LIGHT  

SciTech Connect (OSTI)

The Cosmic Infrared Background Experiment (CIBER) is a suite of four instruments designed to study the near infrared (IR) background light from above the Earth's atmosphere. The instrument package comprises two imaging telescopes designed to characterize spatial anisotropy in the extragalactic IR background caused by cosmological structure during the epoch of reionization, a low resolution spectrometer to measure the absolute spectrum of the extragalactic IR background, and a narrow band spectrometer optimized to measure the absolute brightness of the zodiacal light foreground. In this paper we describe the design and characterization of the CIBER payload. The detailed mechanical, cryogenic, and electrical design of the system are presented, including all system components common to the four instruments. We present the methods and equipment used to characterize the instruments before and after flight, and give a detailed description of CIBER's flight profile and configurations. CIBER is designed to be recoverable and has flown four times, with modifications to the payload having been informed by analysis of the first flight data. All four instruments performed to specifications during the subsequent flights, and the scientific data from these flights are currently being analyzed.

Zemcov, M.; Bock, J.; Hristov, V.; Levenson, L. R.; Mason, P. [Department of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States); Arai, T.; Matsumoto, T.; Matsuura, S.; Tsumura, K.; Wada, T. [Department of Space Astronomy and Astrophysics, Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Kanagawa 252-5210 (Japan); Battle, J. [Jet Propulsion Laboratory (JPL), National Aeronautics and Space Administration (NASA), Pasadena, CA 91109 (United States); Cooray, A. [Center for Cosmology, University of California, Irvine, Irvine, CA 92697 (United States); Keating, B.; Renbarger, T. [Department of Physics, University of California, San Diego, San Diego, CA 92093 (United States); Kim, M. G. [Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of); Lee, D. H.; Nam, U. W. [Korea Astronomy and Space Science Institute (KASI), Daejeon 305-348 (Korea, Republic of); Sullivan, I. [Department of Physics, The University of Washington, Seattle, WA 98195 (United States); Suzuki, K., E-mail: zemcov@caltech.edu [Instrument Development Group of Technical Center, Nagoya University, Nagoya, Aichi 464-8602 (Japan)

2013-08-15T23:59:59.000Z

13

Shedding light on the adult brain: a review of the clinical applications of near-infrared spectroscopy  

Science Journals Connector (OSTI)

...1995.1252 ) 8 Gagnon, R. E. , A. J. Macnab...15 Edmonds, H. L. Jr , B. L. Ganzel, and...Afonso, Luozzo G. Di, R. B. Griepp, and D...B. C. Eikelboom, and R. G. Ackerstaff1998Near-infrared...A. Durham, M. M. McNally, S. C. Agle, F. M...

2011-01-01T23:59:59.000Z

14

Definition: Near Infrared Surveys | Open Energy Information  

Open Energy Info (EERE)

Near Infrared Surveys Near Infrared Surveys Jump to: navigation, search Dictionary.png Near Infrared Surveys Near infrared surveys refer to multi- and hyperspectral data collected in the region just outside wavelengths detectable by the human eye. Near infrared wavelengths are generally considered to be between approximately 0.75-1.4 micrometers. View on Wikipedia Wikipedia Definition Infrared (IR) light is electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometres (nm) to 1 mm. This range of wavelengths corresponds to a frequency range of approximately 430 THz down to 300 GHz, and includes most of the thermal radiation emitted by objects near room temperature. Infrared light is emitted or absorbed by molecules

15

Near infrared detectors for SNAP  

E-Print Network [OSTI]

Near Infrared Detectors for SNAP M. Schubnell a , N. Barron1k × 1k and 2k × 2k) near infrared detectors manufactured byas part of the near infrared R&D e?ort for SNAP (the Super-

2006-01-01T23:59:59.000Z

16

Permanent polarization and charge distribution in organic light-emitting diodes (OLEDs): Insights from near-infrared charge-modulation spectroscopy of an operating OLED  

SciTech Connect (OSTI)

Vapor-deposited Alq{sub 3} layers typically possess a strong permanent electrical polarization, whereas NPB layers do not. (Alq{sub 3} is tris(8-quinolinolato)aluminum(III); NPB is 4,4?-bis[N-(1-naphthyl)-N-phenylamino]biphenyl.) The cause is a net orientation of the Alq{sub 3} molecules with their large dipole moments. Here we report on consequences for an organic light-emitting diode (OLED) with an NPB hole-transport layer and Alq{sub 3} electron-transport layer. The discontinuous polarization at the NPB|Alq{sub 3} interface has the same effect as a sheet of immobile negative charge there. It is more than compensated by a large concentration of injected holes (NPB{sup +}) when the OLED is running. We discuss the implications and consequences for the quantum efficiency and the drive voltage of this OLED and others. We also speculate on possible consequences of permanent polarization in organic photovoltaic devices. The concentration of NPB{sup +} was measured by charge-modulation spectroscopy (CMS) in the near infrared, where the NPB{sup +} has a strong absorption band, supplemented by differential-capacitance and current-voltage measurements. Unlike CMS in the visible, this method avoids complications from modulation of the electroluminescence and electroabsorption.

Marchetti, Alfred P.; Haskins, Terri L.; Young, Ralph H.; Rothberg, Lewis J. [Department of Chemistry, University of Rochester, Rochester, New York 14627 (United States)

2014-03-21T23:59:59.000Z

17

Transparent, near-infrared organic photovoltaic solar cells for window and energy-scavenging applications  

E-Print Network [OSTI]

We fabricate near-infrared absorbing organic photovoltaics that are highly transparent to visible light. By optimizing near-infrared optical-interference, we demonstrate power efficiencies of 1.3±0.1% with simultaneous ...

Lunt, Richard R.

18

Near-Infrared Laser Absorption of Poly(vinyl chloride) at Elevated Temperatures  

E-Print Network [OSTI]

Near-Infrared Laser Absorption of Poly(vinyl chloride) at Elevated Temperatures James D. Van de Ven, unpigmented state are highly transmissive of light in the near-infrared range, thus allowing laser of light detection [2, 3]. Within the near-infrared region nat- ural polymers have nearly no absorption [2

Van de Ven, James D.

19

Carbon nanotubes as near infrared laser susceptors  

E-Print Network [OSTI]

.1. Near Infrared radiation and its interaction with materials ................................... 7 2.1.1. Atomic response to photon absorption .............................................................. 10 2.1.2. Electronic absorption processes... absorption, this extinction of the incident light by atoms is called Raleigh scattering. 10 2.1.1. Atomic response to photon absorption The simple first order explanation of the interaction of atoms with photons was made by Einstein. No explicit quantum...

Bahrami, Amir

2011-01-11T23:59:59.000Z

20

Near-Infrared Detection of Flow Injection Analysis by Acoustooptic Tunable Filter-Based  

E-Print Network [OSTI]

Near-Infrared Detection of Flow Injection Analysis by Acoustooptic Tunable Filter University, P.O. Box 1881, Milwaukee, Wisconsin 53201-1881 The instrumentation development of a near-infrared organic compounds absorb light in the near-infrared region, this AOTF-based near-IR detector can serve

Reid, Scott A.

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Automatic Skin Enhancement with Visible and Near-Infrared Image Fusion  

E-Print Network [OSTI]

Automatic Skin Enhancement with Visible and Near-Infrared Image Fusion Sabine Süsstrunk School and hemo- globin, the key components of skin color, have little absorp- tion in the near-infrared (NIR to the incident light's wavelength, we show that near-infrared images provide information that can be used

Salvaggio, Carl

22

Cell-Permeable Near-Infrared Fluorogenic Substrates for Imaging -Lactamase Activity  

E-Print Network [OSTI]

Cell-Permeable Near-Infrared Fluorogenic Substrates for Imaging -Lactamase Activity Bengang Xing,11 Several fluorogenic substrates for Bla have been reported,4,12 but none work for infrared or near-infrared fluorescence imaging. Infrared/near-infrared light is preferred in molecular imaging studies of living subjects

Xing, Bengang

23

Hemodynamic evoked response of the sensorimotor cortex measured noninvasively with near-infrared  

E-Print Network [OSTI]

Hemodynamic evoked response of the sensorimotor cortex measured noninvasively with near-infrared emerging technique, near-infrared spectroscopy (NIRS) has been demonstrated to be an effective tool probe the human brain cortex using near-infrared light, and to monitor the cerebral concentration

24

Multiphoton microscopy with near infrared contrast  

E-Print Network [OSTI]

Multiphoton microscopy with near infrared contrast agents Siavash Yazdanfar,a, * Chulmin Joo,a Chun limited to the visible spectrum. We introduce a paradigm for MPM of near-infrared NIR fluorescent Engineers. DOI: 10.1117/1.3420209 Keywords: two-photon microscopy; ultrafast fiber lasers; near-infrared

Larson-Prior, Linda

25

Intrinsic near-infrared spectroscopic markers of breast tumors  

E-Print Network [OSTI]

cycle on the red and near-infrared optical properties of thecancer imaging using near-infrared optical measurements andet al. / Intrinsic near-infrared spectroscopic markers of

Kukreti, Shwayta; Cerussi, Albert; Tromberg, Bruce; Gratton, Enrico

2008-01-01T23:59:59.000Z

26

Millimeter and Near-Infrared Observations of Neptune's Atmospheric Dynamics  

E-Print Network [OSTI]

B Near-Infrared Radiative Transfer Model B.15 Near-Infrared Observations of Neptune’s Clouds with the133 6.2 Near-infrared spectroscopy . . . . . .

Cook, Statia Honora Luszcz

2012-01-01T23:59:59.000Z

27

Near-infrared spectroscopic tissue imaging for medical applications  

DOE Patents [OSTI]

Near infrared imaging using elastic light scattering and tissue autofluorescence are explored for medical applications. The approach involves imaging using cross-polarized elastic light scattering and tissue autofluorescence in the Near Infra-Red (NIR) coupled with image processing and inter-image operations to differentiate human tissue components.

Demos, Stavros (Livermore, CA); Staggs, Michael C. (Tracy, CA)

2006-12-12T23:59:59.000Z

28

Near-infrared spectroscopic tissue imaging for medical applications  

DOE Patents [OSTI]

Near infrared imaging using elastic light scattering and tissue autofluorescence are explored for medical applications. The approach involves imaging using cross-polarized elastic light scattering and tissue autofluorescence in the Near Infra-Red (NIR) coupled with image processing and inter-image operations to differentiate human tissue components.

Demos; Stavros (Livermore, CA), Staggs; Michael C. (Tracy, CA)

2006-03-21T23:59:59.000Z

29

ENSEMBLE VARIABILITY OF NEAR-INFRARED-SELECTED ACTIVE GALACTIC NUCLEI  

SciTech Connect (OSTI)

We present the properties of the ensemble variability V for nearly 5000 near-infrared active galactic nuclei (AGNs) selected from the catalog of Quasars and Active Galactic Nuclei (13th Edition) and the SDSS-DR7 quasar catalog. From three near-infrared point source catalogs, namely, Two Micron All Sky Survey (2MASS), Deep Near Infrared Survey (DENIS), and UKIDSS/LAS catalogs, we extract 2MASS-DENIS and 2MASS-UKIDSS counterparts for cataloged AGNs by cross-identification between catalogs. We further select variable AGNs based on an optimal criterion for selecting the variable sources. The sample objects are divided into subsets according to whether near-infrared light originates by optical emission or by near-infrared emission in the rest frame; and we examine the correlations of the ensemble variability with the rest-frame wavelength, redshift, luminosity, and rest-frame time lag. In addition, we also examine the correlations of variability amplitude with optical variability, radio intensity, and radio-to-optical flux ratio. The rest-frame optical variability of our samples shows negative correlations with luminosity and positive correlations with rest-frame time lag (i.e., the structure function, SF), and this result is consistent with previous analyses. However, no well-known negative correlation exists between the rest-frame wavelength and optical variability. This inconsistency might be due to a biased sampling of high-redshift AGNs. Near-infrared variability in the rest frame is anticorrelated with the rest-frame wavelength, which is consistent with previous suggestions. However, correlations of near-infrared variability with luminosity and rest-frame time lag are the opposite of these correlations of the optical variability; that is, the near-infrared variability is positively correlated with luminosity but negatively correlated with the rest-frame time lag. Because these trends are qualitatively consistent with the properties of radio-loud quasars reported by some previous studies, most of our sample objects are probably radio-loud quasars. Finally, we also discuss the negative correlations seen in the near-infrared SFs.

Kouzuma, S. [School of International Liberal Studies, Chukyo University, Toyota 470-0393 (Japan); Yamaoka, H., E-mail: skouzuma@lets.chukyo-u.ac.jp, E-mail: yamaoka@phys.kyushu-u.ac.jp [Department of Physics, Kyushu University, Fukuoka 812-8581 (Japan)

2012-03-01T23:59:59.000Z

30

A near-infrared reflectance sensor for soil surface moisture measurement  

Science Journals Connector (OSTI)

Soil moisture is an important soil property that has important functions in various studies and applications, such as agricultural practices, hydrological processes and ecological issues. A near-infrared (NIR) reflectance sensor designed for moisture ... Keywords: Light-emitting diode, Near-infrared reflectance, Relative absorption depth, Soil moisture

Zhe Yin; Tingwu Lei; Qinghong Yan; Zhanpeng Chen; Yuequn Dong

2013-11-01T23:59:59.000Z

31

Enhancing Photographs with Near Infrared Images Xiaopeng Zhang, Terence Sim, Xiaoping Miao  

E-Print Network [OSTI]

Enhancing Photographs with Near Infrared Images Xiaopeng Zhang, Terence Sim, Xiaoping Miao School of Computing National University of Singapore {zhangxi7,tsim,miaoxiao}@comp.nus.edu.sg Abstract Near Infra-Red, and the dynamic range of RAW format is still quite limited. In contrast, our method uses Near Infrared (NIR) light

Sim, Terence

32

Near-infrared photodetector with reduced dark current  

DOE Patents [OSTI]

A photodetector is disclosed for the detection of near-infrared light with a wavelength in the range of about 0.9-1.7 microns. The photodetector, which can be formed as either an nBp device or a pBn device on an InP substrate, includes an InGaAs light-absorbing layer, an InAlGaAs graded layer, an InAlAs or InP barrier layer, and an InGaAs contact layer. The photodetector can detect near-infrared light with or without the use of an applied reverse-bias voltage and is useful as an individual photodetector, or to form a focal plane array.

Klem, John F; Kim, Jin K

2012-10-30T23:59:59.000Z

33

Near Infrared Surveys | Open Energy Information  

Open Energy Info (EERE)

Near Infrared Surveys Near Infrared Surveys (Redirected from Thermal And-Or Near Infrared) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Near Infrared Surveys Details Activities (18) Areas (14) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Passive Sensors Parent Exploration Technique: Passive Sensors Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 450.0045,000 centUSD 0.45 kUSD 4.5e-4 MUSD 4.5e-7 TUSD / sq. mile Median Estimate (USD): 800.0080,000 centUSD 0.8 kUSD 8.0e-4 MUSD 8.0e-7 TUSD / sq. mile High-End Estimate (USD): 1,350.00135,000 centUSD 1.35 kUSD 0.00135 MUSD 1.35e-6 TUSD / sq. mile

34

Applying near-infrared spectroscopy (nirs)  

E-Print Network [OSTI]

investigated. A recently developed optical imaging technique called near-infrared spectroscopy (NIRS) shows promise for being an acceptable alternative to invasive imaging techniques. NIRS measures correlates of neural activity by assessing hemoglobin...

Wruck, Eric Michael

2005-08-29T23:59:59.000Z

35

Near Infrared Surveys | Open Energy Information  

Open Energy Info (EERE)

Near Infrared Surveys Near Infrared Surveys Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Near Infrared Surveys Details Activities (18) Areas (14) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: Passive Sensors Parent Exploration Technique: Passive Sensors Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Cost Information Low-End Estimate (USD): 450.0045,000 centUSD 0.45 kUSD 4.5e-4 MUSD 4.5e-7 TUSD / sq. mile Median Estimate (USD): 800.0080,000 centUSD 0.8 kUSD 8.0e-4 MUSD 8.0e-7 TUSD / sq. mile High-End Estimate (USD): 1,350.00135,000 centUSD 1.35 kUSD 0.00135 MUSD 1.35e-6 TUSD / sq. mile Time Required Low-End Estimate: 6 weeks0.115 years

36

SiGeC Near Infrared Photodetectors  

E-Print Network [OSTI]

A near infrared waveguide photodetector in Si-based ternary Si?â??xâ??yGexCy alloy was demonstrated for 0.85~1.06 µm wavelength fiber-optic interconnection system applications. Two sets of detectors with active absorption ...

Li, Baojun

37

Biofilm Growth and Near-Infrared Radiation-Driven Photosynthesis of the Chlorophyll d-Containing Cyanobacterium Acaryochloris marina  

Science Journals Connector (OSTI)

...communities (6) depleted of visible radiation (VIS, 400 to 700 nm) and enriched in near-infrared radiation (NIR, 700 nm). While naturally...light-dark period. Near-infrared radiation (NIR) was provided by narrow-band...720 nm) (Epitex, Inc., Japan) at an irradiance of 20 to...

Lars Behrendt; Verena Schrameyer; Klaus Qvortrup; Luisa Lundin; Søren J. Sørensen; Anthony W. D. Larkum; Michael Kühl

2012-03-30T23:59:59.000Z

38

Efficient Synthesis and Properties of Novel Near-Infrared Electrochromic  

E-Print Network [OSTI]

Efficient Synthesis and Properties of Novel Near-Infrared Electrochromic Anthraquinone Imides@pku.edu.cn Received December 13, 2007 ABSTRACT An efficient synthesis of novel near-infrared electrochromic 6 are electrochromic and absorb intensely in the near-infrared range of 700-1600 nm upon electrochemical reduction

Wan, Xin-hua

39

Near-infrared spectroscopy of HD the barrier to linearity  

E-Print Network [OSTI]

Near-infrared spectroscopy of HD 3 above the barrier to linearity BY JENNIFER L. GOTTFRIED, transitions of HC 3 above the barrier to linearity have been observed. A highly sensitive near-infrared-adiabatic and radiative corrections is revealed. Keywords: HD 3 ; near-infrared spectroscopy; barrier to linearity 1

Oka, Takeshi

40

Can Gender Be Predicted from Near-Infrared Face Images?  

E-Print Network [OSTI]

Can Gender Be Predicted from Near-Infrared Face Images? Arun Ross and Cunjian Chen Lane Department spectrum (VIS). We explore the possibility of predicting gender from face images ac- quired in the near-infrared cross-spectral gender prediction. Keywords: Biometrics, Faces, Gender, Near-Infrared, Cross-Spectral. 1

Ross, Arun Abraham

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Multicontrast photoacoustic in vivo imaging using near-infrared fluorescent  

E-Print Network [OSTI]

Multicontrast photoacoustic in vivo imaging using near-infrared fluorescent proteins Arie Krumholz1 the application of two spectrally distinct near-infrared fluorescent proteins, iRFP670 and iRFP720, engineered-tissue PAT, probes absorbing in the near-infrared (NIR) spectral range are desirable. In the NIR optical

Verkhusha, Vladislav V.

42

Plant Growth Measurement Techniques Using Near-Infrared  

E-Print Network [OSTI]

Plant Growth Measurement Techniques Using Near-Infrared Imagery Amr Aboelela John Barron Dept, for measuring plant growth for corn seedlings and Caster Oil Bean leaves. A near-infrared camera, which allows to hypothesize where growth might be taking place. Keywords: Near-Infrared Imagery, Corn Seedling stem

Barron, John

43

COMMUNICATIONS Near-infrared femtosecond photoionization/dissociation of cyclic  

E-Print Network [OSTI]

COMMUNICATIONS Near-infrared femtosecond photoionization/dissociation of cyclic aromatic, phenanthrene, and anthracene. The near-infrared ionization process leads to the production of intact molecular of femtoseconds in simple cluster systems.12­15 Here we report the near-infrared 780 nm photoioniza- tion

Levis, Robert J.

44

Illumination Invariant Face Recognition Using Near-Infrared Images  

E-Print Network [OSTI]

Illumination Invariant Face Recognition Using Near-Infrared Images Stan Z. Li, Senior Member, IEEE-user applications. First, we present an active near infrared (NIR) imaging system that is able to produce face groups. Index Terms--Biometrics, face recognition, near infrared (NIR), illumination invariant, local

Fan, Guoliang

45

innovative techniques Near-infrared spiroximetry: noninvasive measurements  

E-Print Network [OSTI]

innovative techniques Near-infrared spiroximetry: noninvasive measurements of venous saturationO2 ) in tissues using near-infrared spectroscopy (NIRS). This method is based on the respiration-induced oscillations of the near-infrared ab- sorption in tissues, and we call it spiroximetry (the prefix spiro means

46

On the Usage of Near-Infrared Spectral Reconstruction  

Science Journals Connector (OSTI)

Since the advent of near-infrared reflectance analysis (NIRA), there have been numerous attempts to give "traditional" spectroscopic explanations for the successful empirical and...

Kemeny, Gabor J; Wetzel, David L

1987-01-01T23:59:59.000Z

47

Near infrared laser dyes for the detection of latent fingermarks .  

E-Print Network [OSTI]

??The near infrared region (700 nm – 2000 nm) of the electromagnetic spectrum provides significant potential for fingermark detection. Many ubiquitous commercial surfaces give luminescent… (more)

Chadwick, Scott Richard John

2013-01-01T23:59:59.000Z

48

Near-Infrared Spectroscopic Investigation of Water in Supercritical...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Infrared Spectroscopic Investigation of Water in Supercritical CO2 and the Effect of CaCl2. Near-Infrared Spectroscopic Investigation of Water in Supercritical CO2 and the Effect...

49

Near-infrared wavefront sensing for the VLT interferometer  

E-Print Network [OSTI]

The very large telescope (VLT) interferometer (VLTI) in its current operating state is equipped with high-order adaptive optics (MACAO) working in the visible spectrum. A low-order near-infrared wavefront sensor (IRIS) is available to measure non-common path tilt aberrations downstream the high-order deformable mirror. For the next generation of VLTI instrumentation, in particular for the designated GRAVITY instrument, we have examined various designs of a four channel high-order near-infrared wavefront sensor. Particular objectives of our study were the specification of the near-infrared detector in combination with a standard wavefront sensing system. In this paper we present the preliminary design of a Shack-Hartmann wavefront sensor operating in the near-infrared wavelength range, which is capable of measuring the wavefronts of four telescopes simultaneously. We further present results of our design study, which aimed at providing a first instrumental concept for GRAVITY.

Stefan Hippler; Wolfgang Brandner; Yann Clénet; Felix Hormuth; Eric Gendron; Thomas Henning; Ralf Klein; Rainer Lenzen; Daniel Meschke; Vianak Naranjo; Udo Neumann; José Ricardo Ramos; Ralf-Rainer Rohloff; Frank Eisenhauer

2008-08-12T23:59:59.000Z

50

Near infrared frequency dependence of high-order sideband generation  

SciTech Connect (OSTI)

The near infrared frequency dependence of high order sideband generation in InGaAs quantum wells is discussed. The NIR frequency dependence of the sidebands indicates that the HSG phenomenon is excitonic in nature.

Zaks, Benjamin; Banks, Hunter; Sherwin, Mark [Physics Department and the Institute for Terahertz Science and Technology, University of California at Santa Barbara, Santa Barbara, CA 93106 (United States); Liu, Ren-Bao [Physics Department and Centre of Optical Sciences, Chinese University of Hong Kong, Shatin, New Territories, Hong Kong (China)

2013-12-04T23:59:59.000Z

51

Questioning the questions that have been asked about the infant brain using near-infrared spectroscopy  

E-Print Network [OSTI]

Questioning the questions that have been asked about the infant brain using near-infrared, University of Rochester, Rochester, NY, USA Near-infrared spectroscopy (NIRS) is a noninvasive diffuse; Near-infrared spectroscopy. "Sheddinglight"onascientificquestiontookonnew meaning when

Aslin, Richard N.

52

Programmable near-infrared ranging system  

DOE Patents [OSTI]

A high angular resolution ranging system particularly suitable for indoor plications involving mobile robot navigation and collision avoidance uses a programmable array of light emitters that can be sequentially incremented by a microprocessor. A plurality of adjustable level threshold detectors are used in an optical receiver for detecting the threshold level of the light echoes produced when light emitted from one or more of the emitters is reflected by a target or object in the scan path of the ranging system.

Everett, Jr., Hobart R. (San Diego, CA)

1989-01-01T23:59:59.000Z

53

Near infrared optical lymphography for cancer diagnostics  

E-Print Network [OSTI]

amplitude of intensity-modulated light [a.u.] IDC mean intensity of modulated light [a.u.] k non-radiative relaxation rate [s-1] MS mixed signal n refractive index x English symbols continued: N number of samples in Fourier transform PS... quantum yield ? photon fluence rate [W/cm2] ? radiative relaxation rate [sec-1] ? wavelength of light [nm] ? a absorption coefficient [cm-1] ? amf absorption coefficient due to fluorophores at fluorescent emission wavelength [cm-1] ? axf...

Houston, Jessica Perea

2007-04-25T23:59:59.000Z

54

Combining multivariate analysis and monosaccharide composition modeling to identify plant cell wall variations by Fourier Transform Near Infrared spectroscopy.  

E-Print Network [OSTI]

19. Wetzel DL: Near-infrared reflectance analysis - sleepertreatments of raw near-infrared signal in the measurement ofusing transmittance near-infrared spectroscopy. J Agric Food

2011-01-01T23:59:59.000Z

55

Combining multivariate analysis and monosaccharide composition modeling to identify plant cell wall variations by Fourier Transform Near Infrared spectroscopy  

E-Print Network [OSTI]

19. Wetzel DL: Near-infrared reflectance analysis - sleepertreatments of raw near-infrared signal in the measurement ofusing transmittance near-infrared spectroscopy. J Agric Food

2011-01-01T23:59:59.000Z

56

The Visible and Near Infrared module of EChO  

E-Print Network [OSTI]

The Visible and Near Infrared (VNIR) is one of the modules of EChO, the Exoplanets Characterization Observatory proposed to ESA for an M-class mission. EChO is aimed to observe planets while transiting by their suns. Then the instrument had to be designed to assure a high efficiency over the whole spectral range. In fact, it has to be able to observe stars with an apparent magnitude Mv= 9-12 and to see contrasts of the order of 10-4 - 10-5 necessary to reveal the characteristics of the atmospheres of the exoplanets under investigation. VNIR is a spectrometer in a cross-dispersed configuration, covering the 0.4-2.5 micron spectral range with a resolving power of about 330 and a field of view of 2 arcsec. It is functionally split into two channels respectively working in the 0.4-1 and 1.0-2.5 micron spectral ranges. Such a solution is imposed by the fact the light at short wavelengths has to be shared with the EChO Fine Guiding System (FGS) devoted to the pointing of the stars under observation. The spectromete...

Adriani, A; Gambicorti, L; Focardi, M; Oliva, E; Farina, M; Di Giorgio, A M; Santoli, F; Pace, E; Piccioni, G; Filacchione, G; Pancrazzi, M; Tozzi, A; Micela, G

2014-01-01T23:59:59.000Z

57

NEAR-INFRARED LINEAR POLARIZATION OF ULTRACOOL DWARFS  

SciTech Connect (OSTI)

We report on near-infrared J- and H-band linear polarimetric photometry of eight ultracool dwarfs (two late-M, five L0-L7.5, and one T2.5) with known evidence for photometric variability due to dust clouds, anomalous red infrared colors, or low-gravity atmospheres. The polarimetric data were acquired with the LIRIS instrument on the William Herschel Telescope. We also provide mid-infrared photometry in the interval 3.4-24 {mu}m for some targets obtained with Spitzer and WISE, which has allowed us to confirm the peculiar red colors of five sources in the sample. We can impose modest upper limits of 0.9% and 1.8% on the linear polarization degree for seven targets with a confidence of 99%. Only one source, 2MASS J02411151-0326587 (L0), appears to be strongly polarized (P {approx} 3%) in the J band with a significance level of P/{sigma}{sub P} {approx} 10. The likely origin of its linearly polarized light and rather red infrared colors may reside in a surrounding disk with an asymmetric distribution of grains. Given its proximity (66 {+-} 8 pc), this object becomes an excellent target for the direct detection of the disk.

Zapatero Osorio, M. R. [Centro de Astrobiologia (CSIC-INTA), Ctra. Ajalvir km 4, E-28850 Torrejon de Ardoz, Madrid (Spain); Bejar, V. J. S.; Rebolo, R.; Acosta-Pulido, J. A.; Manchado, A.; Pena Ramirez, K. [Instituto de Astrofisica de Canarias, C/. Via Lactea s/n, E-38205 La Laguna, Tenerife (Spain); Goldman, B. [Max-Planck Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg (Germany); Caballero, J. A., E-mail: mosorio@cab.inta-csic.es, E-mail: vbejar@iac.es, E-mail: rrl@iac.es, E-mail: jaa@iac.es, E-mail: amt@iac.es, E-mail: karla@iac.es, E-mail: goldman@mpia.de, E-mail: caballero@cab.inta-csic.es [Centro de Astrobiologia (CSIC-INTA), P.O. Box 78, E-28691 Villanueva de la Canada, Madrid (Spain)

2011-10-10T23:59:59.000Z

58

AKARI INFRARED CAMERA SURVEY OF THE LARGE MAGELLANIC CLOUD. II. THE NEAR-INFRARED SPECTROSCOPIC CATALOG  

SciTech Connect (OSTI)

We performed a near-infrared spectroscopic survey toward an area of {approx}10 deg{sup 2} of the Large Magellanic Cloud (LMC) with the infrared satellite AKARI. Observations were carried out as part of the AKARI Large-area Survey of the Large Magellanic Cloud (LSLMC). The slitless multi-object spectroscopic capability of the AKARI/IRC enabled us to obtain low-resolution (R {approx} 20) spectra in 2-5 {mu}m for a large number of point sources in the LMC. As a result of the survey, we extracted about 2000 infrared spectra of point sources. The data are organized as a near-infrared spectroscopic catalog. The catalog includes various infrared objects such as young stellar objects (YSOs), asymptotic giant branch (AGB) stars, supergiants, and so on. It is shown that 97% of the catalog sources have corresponding photometric data in the wavelength range from 1.2 to 11 {mu}m, and 67% of the sources also have photometric data up to 24 {mu}m. The catalog allows us to investigate near-infrared spectral features of sources by comparison with their infrared spectral energy distributions. In addition, it is estimated that about 10% of the catalog sources are observed at more than two different epochs. This enables us to study a spectroscopic variability of sources by using the present catalog. Initial results of source classifications for the LSLMC samples are presented. We classified 659 LSLMC spectra based on their near-infrared spectral features by visual inspection. As a result, it is shown that the present catalog includes 7 YSOs, 160 C-rich AGBs, 8 C-rich AGB candidates, 85 O-rich AGBs, 122 blue and yellow supergiants, 150 red super giants, and 128 unclassified sources. Distributions of the classified sources on the color-color and color-magnitude diagrams are discussed in the text. Continuous wavelength coverage and high spectroscopic sensitivity in 2-5 {mu}m can only be achieved by space observations. This is an unprecedented large-scale spectroscopic survey toward the LMC in the near-infrared. A large number of near-infrared spectral data provided by the survey possess scientific potential that can be applied to various studies. In this paper, we present the details of the spectroscopic survey and the catalog, and discuss its scientific applications.

Shimonishi, Takashi [Department of Earth and Planetary Sciences, Graduate School of Science, Kobe University, Nada Kobe 657-8501 (Japan); Onaka, Takashi; Kato, Daisuke; Sakon, Itsuki [Department of Astronomy, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Ita, Yoshifusa [Astronomical Institute, Graduate School of Science, Tohoku University, 6-3 Aramaki Aoba, Aoba-ku, Sendai, Miyagi 980-8578 (Japan); Kawamura, Akiko [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Kaneda, Hidehiro, E-mail: shimonishi@penguin.kobe-u.ac.jp [Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602 (Japan)

2013-02-01T23:59:59.000Z

59

Sub-Pixel Response Measurement of Near-Infrared Sensors  

E-Print Network [OSTI]

Wide-field survey instruments are used to efficiently observe large regions of the sky. To achieve the necessary field of view, and to provide a higher signal-to-noise ratio for faint sources, many modern instruments are undersampled. However, precision photometry with undersampled imagers requires a detailed understanding of the sensitivity variations on a scale much smaller than a pixel. To address this, a near-infrared spot projection system has been developed to precisely characterize near-infrared focal plane arrays and to study the effect of sub-pixel non uniformity on precision photometry. Measurements of large format near-infrared detectors demonstrate the power of this system for understanding sub-pixel response.

N. Barron; M. Borysow; K. Beyerlein; M. Brown; C. Weaverdyck; W. Lorenzon; M. Schubnell; G. Tarle; A. Tomasch

2006-11-10T23:59:59.000Z

60

Transit and secondary eclipse photometry in the near-infrared  

E-Print Network [OSTI]

Near-infrared photometry of transiting extrasolar planets can be of great scientific value. It is however not straightforward to reach the necessary millimagnitude precision. Here we report on our attempts to observe transits and secondary eclipses of several extrasolar planets at 2.2 micron. Best results have been obtained on OGLE-TR-113b using the SOFI near-infrared camera on ESO's New Technology Telescope. Its K-band transit shows a remarkably flat bottom indicating low stellar limb darkening. Secondary eclipse photometry has resulted in a formal 3 sigma detection, but residual systematic effects make this detection rather uncertain.

Ignas Snellen

2007-05-02T23:59:59.000Z

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Near-infrared approaches for cell culture monitoring  

E-Print Network [OSTI]

investigated using near-infrared spectroscopy across the 2.0-2.5 mm spectral region. A system was developed using a Fourier Transform Infrared (FT-IR) spectrometer and optical fibers to characterize glucose and lactate absorbance spectra in cell culture media...

Lee, Seung Joon

2012-06-07T23:59:59.000Z

62

New Near-Infrared Surface Brightness Fluctuation Models  

E-Print Network [OSTI]

We present new theoretical models for surface brightness fluctuations in the near-infrared. We show the time evolution of near-infrared brightness fluctuation properties over large age and metallicity ranges, i.e., from 12 Myr to 16 Gyr, and from Z/Zsun=1/50 to Z/Zsun=2.5, for single age, single metallicity stellar populations. All the stellar models are followed from the zero age main sequence to the central carbon ignition for massive stars, or to the end of the thermally pulsing regime of the asymptotic giant branch phase for low and intermediate mass stars. The new models are compared with observed near-infrared fluctuation absolute magnitudes and colours for a sample of Magellanic Cloud star clusters and Fornax Cluster galaxies. For star clusters younger than ~3 Gyr, the predicted near-infrared fluctuation properties are in a satisfactory agreement with observed ones over a wide range of stellar population metallicities. However, for older star clusters, the agreement between the observed and predicted near-IR brightness fluctuations depends on how the surface brightness absolute magnitudes are estimated. The computed set of models are not able to match the observed near-IR fluctuation absolute magnitudes and colours simultaneously. We argue that the observed discrepancies between the predicted and observed properties of old MC superclusters are more likely due to observational reasons.

M. Mouhcine; R. A. Gonzalez; M. C. Liu

2005-11-30T23:59:59.000Z

63

Ricardo's ACTION Strategy: An Enabling Light Duty Diesel Technology...  

Broader source: Energy.gov (indexed) [DOE]

US Market 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005deergreaney.pdf More Documents & Publications Light-Duty Diesel...

64

Ricardo's ACTION Strategy: An Enabling Light Duty Diesel Technology...  

Broader source: Energy.gov (indexed) [DOE]

light duty diesel solutions for the US market Technology Strategy Lowest system cost Engine technology selection Aftertreatment technology selection Control approach & OBD...

65

THE COSMIC NEAR-INFRARED BACKGROUND. II. FLUCTUATIONS  

SciTech Connect (OSTI)

The near-infrared background (NIRB) is one of a few methods that can be used to observe the redshifted light from early stars at a redshift of 6 and above, and thus it is imperative to understand the significance of any detection or nondetection of the NIRB. Fluctuations of the NIRB can provide information on the first structures, such as halos and their surrounding ionized regions in the intergalactic medium (IGM). We combine, for the first time, N-body simulations, radiative transfer code, and analytic calculations of luminosity of early structures to predict the angular power spectrum (C{sub l} ) of fluctuations in the NIRB. We study in detail the effects of various assumptions about the stellar mass, the initial mass spectrum of stars, the metallicity, the star formation efficiency (f{sub *}), the escape fraction of ionizing photons (f{sub esc}), and the star formation timescale (t{sub SF}), on the amplitude as well as the shape of C{sub l} . The power spectrum of NIRB fluctuations is maximized when f{sub *} is the largest (as C{sub l} {proportional_to} f {sup 2}{sub *}) and f{sub esc} is the smallest (as more nebular emission is produced within halos). A significant uncertainty in the predicted amplitude of C{sub l} exists due to our lack of knowledge of t{sub SF} of these early populations of galaxies, which is equivalent to our lack of knowledge of the mass-to-light ratio of these sources. We do not see a turnover in the NIRB angular power spectrum of the halo contribution, which was claimed to exist in the literature, and explain this as the effect of high levels of nonlinear bias that was ignored in the previous calculations. This is partly due to our choice of the minimum mass of halos contributing to NIRB ({approx}2 x 10{sup 9} M{sub sun}), and a smaller minimum mass, which has a smaller nonlinear bias, may still exhibit a turnover. Therefore, our results suggest that both the amplitude and shape of the NIRB power spectrum provide important information regarding the nature of sources contributing to the cosmic reionization. The angular power spectrum of the IGM, in most cases, is much smaller than the halo angular power spectrum, except when f{sub esc} is close to unity, t{sub SF} is longer, or the minimum redshift at which the star formation is occurring is high. In addition, low levels of the observed mean background intensity tend to rule out high values of f{sub *} {approx}> 0.2.

Fernandez, Elizabeth R. [Center for Astrophysics and Space Astronomy, University of Colorado, 389 UCB, Boulder, CO 80309-0389 (United States); Komatsu, Eiichiro; Shapiro, Paul R. [Texas Cosmology Center and the Department of Astronomy, University of Texas at Austin, 1 University Station, C1400, Austin, TX 78712 (United States); Iliev, Ilian T., E-mail: elizabeth.fernandez@colorado.ed [Astronomy Centre, Department of Physics and Astronomy, Pevensey II Building, University of Sussex, Falmer, Brighton BN1 9QH (United Kingdom)

2010-02-20T23:59:59.000Z

66

Pharos: enable physical analytics through visible light based indoor localization  

Science Journals Connector (OSTI)

Indoor physical analytics calls for high-accuracy localization that existing indoor (e.g., WiFi-based) localization systems may not offer. By exploiting the ever increasingly wider adoption of LED lighting, in this paper, we study the problem of using ... Keywords: LED, indoor localization, mobile, optical channel model, physical analytics, visible light

Pan Hu; Liqun Li; Chunyi Peng; Guobin Shen; Feng Zhao

2013-11-01T23:59:59.000Z

67

Engineering adenylate cyclases regulated by near-infrared window light  

Science Journals Connector (OSTI)

...the engineering space was limited to amino acids...was plated in a sector of each of the...irradiation as tissue heating. To test this possibility...involves (i) construction of permissive fusions...Three-Fragment Vector Construction kit...molecular circuits in space and time . Nat...Aeronautics and Space Administration...

Min-Hyung Ryu; In-Hye Kang; Mathew D. Nelson; Tricia M. Jensen; Anna I. Lyuksyutova; Jessica Siltberg-Liberles; David M. Raizen; Mark Gomelsky

2014-01-01T23:59:59.000Z

68

Broadband dye-sensitized upconversion of near-infrared light  

E-Print Network [OSTI]

of the fundamental factors limiting the energy conversion efficiency of a single-junction solar cell to the Shockley by the dye-sensitized nanoparticles is dramatically enhanced (by a factor of 3,300) as a result of increased­ Queisser limit of 32% is the inability to absorb photons with energy less than the bandgap of the active

69

HIGH-CONTRAST NEAR-INFRARED IMAGING POLARIMETRY OF THE PROTOPLANETARY DISK AROUND RY TAU  

SciTech Connect (OSTI)

We present near-infrared coronagraphic imaging polarimetry of RY Tau. The scattered light in the circumstellar environment was imaged at the H band at a high resolution ({approx}0.''05) for the first time, using Subaru/HiCIAO. The observed polarized intensity (PI) distribution shows a butterfly-like distribution of bright emission with an angular scale similar to the disk observed at millimeter wavelengths. This distribution is offset toward the blueshifted jet, indicating the presence of a geometrically thick disk or a remnant envelope, and therefore the earliest stage of the Class II evolutionary phase. We perform comparisons between the observed PI distribution and disk models with (1) full radiative transfer code, using the spectral energy distribution (SED) to constrain the disk parameters; and (2) monochromatic simulations of scattered light which explore a wide range of parameters space to constrain the disk and dust parameters. We show that these models cannot consistently explain the observed PI distribution, SED, and the viewing angle inferred by millimeter interferometry. We suggest that the scattered light in the near-infrared is associated with an optically thin and geometrically thick layer above the disk surface, with the surface responsible for the infrared SED. Half of the scattered light and thermal radiation in this layer illuminates the disk surface, and this process may significantly affect the thermal structure of the disk.

Takami, Michihiro; Karr, Jennifer L.; Kim, Hyosun; Chou, Mei-Yin [Institute of Astronomy and Astrophysics, Academia Sinica. P.O. Box 23-141, Taipei 10617, Taiwan (China); Hashimoto, Jun; Kandori, Ryo; Kusakabe, Nobuhiko; Kwon, Jungmi [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Wisniewski, John [H. L. Dodge Department of Physics and Astronomy, University of Oklahoma, 440 West Brooks Street, Norman, OK 73019 (United States); Henning, Thomas; Brandner, Wolfgang [Max Planck Institute for Astronomy, Koenigstuhl 17, D-69117 Heidelberg (Germany); Grady, Carol A. [Eureka Scientific, 2452 Delmer, Suite 100, Oakland, CA 96002 (United States); Hodapp, Klaus W. [Institute for Astronomy, University of Hawaii, 640 North A'ohoku Place, Hilo, HI 96720 (United States); Kudo, Tomoyuki [Subaru Telescope, 650 North A'ohoku Place, Hilo, HI 96720 (United States); Itoh, Yoichi [Nishi-Harima Astronomical Observatory, Center for Astronomy, University of Hyogo, 407-2 Nishigaichi, Sayo, Hyogo 679-5313 (Japan); Momose, Munetake [College of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512 (Japan); Mayama, Satoshi [The Center for the Promotion of Integrated Sciences, The Graduate University for Advanced Studies (SOKENDAI), Shonan International Village, Hayama-cho, Miura-gun, Kanagawa 240-0193 (Japan); Currie, Thayne [Department of Astronomy and Astrophysics, University of Toronto, Toronto, ON (Canada); Follette, Katherine B. [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson AZ 85721 (United States); Abe, Lyu, E-mail: hiro@asiaa.sinica.edu.tw [Laboratoire Lagrange (UMR 7293), Universite de Nice-Sophia Antipolis, CNRS, Observatoire de la Cote d'Azur, 28 Avenue Valrose, F-06108 Nice Cedex 2 (France); and others

2013-08-01T23:59:59.000Z

70

Near-Infrared Electrochromic and Electroluminescent Polymers Containing Pendant Ruthenium Complex Groups  

E-Print Network [OSTI]

Near-Infrared Electrochromic and Electroluminescent Polymers Containing Pendant Ruthenium ComplexVised Manuscript ReceiVed August 30, 2006 ABSTRACT: A series of near-infrared (NIR) electrochromic. All the polymers are near-infrared (NIR) electrochromic, displaying an intense absorption centered

Wan, Xin-hua

71

Polarimetric Remote Sensing in the Visible to Near Infrared James R. Shell II  

E-Print Network [OSTI]

Polarimetric Remote Sensing in the Visible to Near Infrared by James R. Shell II B.S. Physics Title of Dissertation: Polarimetric Remote Sensing in the Visible to Near Infrared I, James R. Shell II Remote Sensing in the Visible to Near Infrared by James R. Shell II Submitted to the Chester F. Carlson

Salvaggio, Carl

72

Near-Infrared Fluorescent pH-Sensitive Probes via Unexpected Barbituric Acid  

E-Print Network [OSTI]

Near-Infrared Fluorescent pH-Sensitive Probes via Unexpected Barbituric Acid Mediated Synthesis achilefus@mir.wustl.edu Received October 13, 2008 ABSTRACT Novel near-infrared pyrimidine-fused p by 2D-NMR. All new compounds are highly fluorescent in the near-infrared region and possess excellent

Larson-Prior, Linda

73

Evaluation of Gender Classification Methods on Thermal and Near-infrared Face Images  

E-Print Network [OSTI]

Evaluation of Gender Classification Methods on Thermal and Near-infrared Face Images Cunjian Chen, the possibility of deducing gender from face images obtained in the near-infrared (NIR) and thermal (THM) spectra technologies, thermal and near-infrared images are beginning to be used in face- related applications

Ross, Arun Abraham

74

Near Infrared Dyes as Lifetime Solvatochromic Probes for Micropolarity Measurements of Biological Systems  

E-Print Network [OSTI]

Near Infrared Dyes as Lifetime Solvatochromic Probes for Micropolarity Measurements of Biological, metabolism, and excretion. With the recent widespread use of near-infrared (NIR) fluorescent dyes, ultraviolet/visible/near-infrared (NIR) absorption, and fluorescence (7,8) have been developed. The latter

Larson-Prior, Linda

75

Low Loss Liquid Crystal Photonic Bandgap Fiber in the Near-Infrared Region  

E-Print Network [OSTI]

Low Loss Liquid Crystal Photonic Bandgap Fiber in the Near-Infrared Region Lara SCOLARI1 , Lei WEI1 in the spectral range of 1­2 mm. We achieve in the middle of the near-infrared transmission bandgap the lowest Keywords: photonic bandgap fiber, liquid crystals, absorption loss, all-in-fiber devices, tunability, near-infrared

Wu, Shin-Tson

76

Investigation of the near-infrared spectral character of putative Martian chloride deposits  

E-Print Network [OSTI]

Investigation of the near-infrared spectral character of putative Martian chloride deposits Heidi B in near-infrared ratio spectra. It is hypothesized that the admixture of anhydrous chlorides or unoxidized of these deposits. Citation: Jensen, H. B., and T. D. Glotch (2011), Investigation of the near-infrared spectral

Glotch, Timothy D.

77

Chemistry & Biology A Near-Infrared BiFC Reporter for In Vivo Imaging  

E-Print Network [OSTI]

Chemistry & Biology Resource A Near-Infrared BiFC Reporter for In Vivo Imaging of Protein of genetically encoded fluorescent probes in near-infrared region for which mammalian tissues are the most transparent. We have used a near- infrared fluorescent protein iRFP engineered from a bacterial phytochrome

Verkhusha, Vladislav V.

78

Targeting Beta-3 Integrin Using a Linear Hexapeptide Labeled with a Near-Infrared Fluorescent Molecular  

E-Print Network [OSTI]

Targeting Beta-3 Integrin Using a Linear Hexapeptide Labeled with a Near-Infrared Fluorescent-peptides labeled with a near-infrared fluorescent probe (cypate) showed that rearranging the glycine in a linear, and physiopathologic processes mediated by this protein. Keywords: Integrin; cancer; near-infrared; imaging; molecular

Larson-Prior, Linda

79

STUDY OF TRANS-RECTAL NEAR-INFRARED DIFFUSE OPTICAL TOMOGRAPHY CONCURRENT  

E-Print Network [OSTI]

STUDY OF TRANS-RECTAL NEAR-INFRARED DIFFUSE OPTICAL TOMOGRAPHY CONCURRENT WITH TRANS of the requirements for the Degree of DOCTOR OF PHILOSOPHY May, 2010 #12;ii STUDY OF TRANS-RECTAL NEAR-INFRARED supported by the project Trans-rectal Near-Infrared Optical Tomography for Prostate Imaging from DOD

Piao, Daqing

80

Near-infrared femtosecond laser machining initiated by ultraviolet multiphoton ionization  

E-Print Network [OSTI]

Near-infrared femtosecond laser machining initiated by ultraviolet multiphoton ionization X. Yu, Q://apl.aip.org/features/most_downloaded Information for Authors: http://apl.aip.org/authors #12;Near-infrared femtosecond laser machining initiated, and the near-infrared pulse utilizes these electrons to cause damage by avalanche ionization. VC 2013 American

Van Stryland, Eric

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Enhanced divergent thinking and creativity in musicians: A behavioral and near-infrared spectroscopy study  

E-Print Network [OSTI]

Enhanced divergent thinking and creativity in musicians: A behavioral and near-infrared 2008 Available online 23 August 2008 Keywords: Creativity Divergent thinking Prefrontal cortex Near-infrared participants, using behavioral tasks and near-infrared spectroscopy (NIRS). Experiment 1 examined convergent

Park, Sohee

82

Near-infrared spectroscopy measurement of the pulsatile component of cerebral blood flow and volume from  

E-Print Network [OSTI]

Near-infrared spectroscopy measurement of the pulsatile component of cerebral blood flow and volume, Massachusetts 02129 E-mail: themelis@nmr.mgh.harvard.edu Abstract. We describe a near-infrared spectroscopy NIRS-Optical Instrumentation Engineers. DOI: 10.1117/1.2710250 Keywords: cerebral blood flow; cerebral blood volume; near-infrared

83

Theoretical analysis of Si1xyGexCy near-infrared photodetectors  

E-Print Network [OSTI]

Theoretical analysis of Si1Ã?xÃ?yGexCy near-infrared photodetectors Baojun Li Zhongshan (Sun Yat and Engineering Cambridge, Massachusetts 02139 Abstract. A near-infrared waveguide photodetector in a Si-based ter, especially for SiGe with a high Ge fraction. To obtain sufficient absorption at near-infrared wavelengths

84

The Near-Infrared Tracks of Protostellar Outflows. A thesis submitted for the degree of  

E-Print Network [OSTI]

The Near-Infrared Tracks of Protostellar Outflows. A thesis submitted for the degree of Doctor of objects are described. In each case, the technique of near-infrared imaging is used in order to understand designed to study examples of very bright outflows in the near-infrared using the UFTI high

85

FEATURE ARTICLE Photoexcitation, Ionization, and Dissociation of Molecules Using Intense Near-Infrared  

E-Print Network [OSTI]

FEATURE ARTICLE Photoexcitation, Ionization, and Dissociation of Molecules Using Intense Near-Infrared The coupling mechanism between an intense (1013 W cm-2, 780 nm) near-infrared radiation field of duration 50 above threshold dissociation,3 multiple electron emission,4 and mo- lecular ionization using near-infrared

Levis, Robert J.

86

Biometric classifier update using online learning: A case study in near infrared face verification  

E-Print Network [OSTI]

Biometric classifier update using online learning: A case study in near infrared face verification 2010 Accepted 26 January 2010 Keywords: Biometrics Online learning Support vector machine Near infrared of the proposed online learning strategy is validated in a near infrared face verification application involving

Ross, Arun Abraham

87

Comparison of multivariate methods for inferential modeling of soil carbon using visible/near-infrared spectra  

E-Print Network [OSTI]

Comparison of multivariate methods for inferential modeling of soil carbon using visible/near-infrared Diffuse reflectance spectroscopy Visible/near-infrared spectroscopy Multivariate calibration Pre-processing transformations In order to reduce costs and time in the analysis of soil properties, visible/near-infrared

Grunwald, Sabine

88

Near-infrared electronic spectrum of CH2 Jennifer L. Gottfried and Takeshi Okaa)  

E-Print Network [OSTI]

Near-infrared electronic spectrum of CH2 ¿ Jennifer L. Gottfried and Takeshi Okaa) Department B1( u)X~ 2 A1 electronic transition of CH2 have been observed in the near infrared from 11 000. In this paper, we report the first observation of an elec- tronic transition of CH2 in the near infrared at 0

Oka, Takeshi

89

Author's personal copy Soil total carbon analysis in Hawaiian soils with visible, near-infrared and  

E-Print Network [OSTI]

Author's personal copy Soil total carbon analysis in Hawaiian soils with visible, near-infrared reflectance spectroscopy Agriculture Hawaii Mid-infrared Soil carbon Visible near-infrared Accurate assessment of DRS for Ct prediction of Hawaiian ag- ricultural soils by creating visible, near-infrared (VNIR

Grunwald, Sabine

90

Research report Bilateral near-infrared monitoring of the cerebral concentration and  

E-Print Network [OSTI]

Research report Bilateral near-infrared monitoring of the cerebral concentration and oxygen therapy (ECT). Non-invasive near infrared spectroscopy has previously been shown to reliably measure: Electro-convulsive therapy; Near-infrared spectroscopy; Seizure; Cerebral hemodynamics 1. Introduction

Boas, David

91

Near-Infrared Reflectance Spectroscopy is a Rapid, Cost-Effective Predictor  

E-Print Network [OSTI]

Near-Infrared Reflectance Spectroscopy is a Rapid, Cost-Effective Predictor of Seagrass Nutrients + Business Media, Inc. 2006 Abstract Near-infrared reflectance spectroscopy was used to analyze nutrient com to the laboratory, and separated into leaf and root/rhizome fractions. They were dried, ground, and near-infrared

Marsh, Helene

92

Comparison of Long-Wave Infrared Imaging and Visible/Near-Infrared Imaging of Vegetation for  

E-Print Network [OSTI]

Comparison of Long-Wave Infrared Imaging and Visible/Near-Infrared Imaging of Vegetation using spectral imaging. This has been accom- plished with both visible/near-infrared (Vis/NIR) sunlight-path laser absorption measurements [14]­[16], in-situ visible and near-infrared (Vis/NIR) spectral

Lawrence, Rick L.

93

THE NEAR-INFRARED SPECTRUM OF THE BROWN DWARF GLIESE 229B T. R. GEBALLE  

E-Print Network [OSTI]

THE NEAR-INFRARED SPECTRUM OF THE BROWN DWARF GLIESE 229B T. R. GEBALLE Joint Astronomy Centre, 660 vapor. Water and methane are both shown to be strong absorbers in the near-infrared spectrum. (1995) obtained a low-resolution ( / 2 150) near-infrared (1­2.5 m) spectrum of Gl 229B and found

Sloan, Gregory C.

94

Near-infrared spectroscopy of H3 above the barrier to linearity  

E-Print Network [OSTI]

Near-infrared spectroscopy of H3 ¿ above the barrier to linearity Jennifer L. Gottfried,a) Benjamin in absorption in the near infrared using a highly sensitive dual-beam, double-modulation technique weaker than the fundamental band,16 occur in the near- infrared region and were observed in absorption

Oka, Takeshi

95

RESEARCH OF RICE-QUALITY BASED ON COMPUTER VISION AND NEAR INFRARED  

E-Print Network [OSTI]

RESEARCH OF RICE-QUALITY BASED ON COMPUTER VISION AND NEAR INFRARED SPECTROSCOPY RuoKui Chang 1 was put forward based on near infrared(NIR) spectral technology. The NIR spectra were acquired from 13 grade of the unknown kinds of rice in the future. Key words: near-infrared spectroscopy; appearance

Boyer, Edmond

96

Near-Infrared Photodetector Enhanced by an Open-Sleeve Dipole Antenna  

E-Print Network [OSTI]

Near-Infrared Photodetector Enhanced by an Open- Sleeve Dipole Antenna Liang Tang, S. Ekin Kocabas-aperture-enhanced photodetector has been demonstrated at near infrared wavelengths based on this principle [6]. However, for easyITuD3.pdf #12;responsivity at near-infrared wavelengths and its compatibility with Si technology

Miller, David A. B.

97

Getting simultaneous red and near infrared bands from a single digital camera for plant monitoring applications  

E-Print Network [OSTI]

Getting simultaneous red and near infrared bands from a single digital camera for plant monitoring including red and near-infrared bands have proved their efficiency for vegetation-soil discrimination an original solution to obtain simultaneously the near-infrared and red bands from a standard RGB camera

Paris-Sud XI, Université de

98

Determination of Enantiomeric Compositions of Amino Acids by Near-Infrared Spectrometry  

E-Print Network [OSTI]

Determination of Enantiomeric Compositions of Amino Acids by Near-Infrared Spectrometry through for the determination of enantiomeric compositions of a variety of compounds. The method is based on the use of the near-infrared and sensitively determining enantiomeric purity of all types of compounds is, therefore, needed. A near-infrared

Reid, Scott A.

99

Information content of near-infrared spaceborne multiangular polarization measurements for  

E-Print Network [OSTI]

Information content of near-infrared spaceborne multiangular polarization measurements for aerosol; revised 1 May 2007; accepted 21 May 2007; published 25 July 2007. [1] The information content of near-infrared: Lebsock, M. D., T. S. L'Ecuyer, and G. L. Stephens (2007), Information content of near-infrared spaceborne

Stephens, Graeme L.

100

Using sheep preference, near infrared reflectance and laboratory tests for predicting voluntary intake  

E-Print Network [OSTI]

Using sheep preference, near infrared reflectance and laboratory tests for predicting voluntary for grinding ; N, NDF, ADF ; in vitro DMD ; and 4 promising second derivatives of the near infrared spectrum in VDMI, gas production methods lose their predictive ability in favour of in sacco methods. Near Infrared

Boyer, Edmond

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Determination of Monomethylhydrazine with a High-Throughput, All-Fiber Near-Infrared  

E-Print Network [OSTI]

Determination of Monomethylhydrazine with a High-Throughput, All-Fiber Near-Infrared Spectrometer-throughput near-infrared spectrophotometer has been successfully constructed by synergistic use of this integrated and wide spectral band- width in the near-infrared region from 1500 to 1600 nm. This spectral region

Reid, Scott A.

102

The Accuracy of Near Infrared Spectroscopy and Imaging during Focal Changes in Cerebral Hemodynamics  

E-Print Network [OSTI]

The Accuracy of Near Infrared Spectroscopy and Imaging during Focal Changes in Cerebral January 21, 2000; published online November 7, 2000 Near infrared spectroscopy (NIRS) can detect changes arterial pulsation (1,2). Near infrared spectros- copy (NIRS) was developed to measure average tissue

103

Evidence for Kinetic Inhomogeneity in the Curing of Epoxy Using the Near-Infrared Multispectral  

E-Print Network [OSTI]

Evidence for Kinetic Inhomogeneity in the Curing of Epoxy Using the Near-Infrared Multispectral a near-infrared (NIR) multispectral imaging spectrometer. This imaging spectrometer is capable number of pixels were used. The near-infrared (NIR) technique has been used extensively in recent years

Reid, Scott A.

104

SERS-Coded Gold Nanorods as a Multifunctional Platform for Densely Multiplexed Near-Infrared  

E-Print Network [OSTI]

SERS-Coded Gold Nanorods as a Multifunctional Platform for Densely Multiplexed Near-Infrared. In this work, we show that the near-infrared plasmon resonance of gold nanorods (NRs) may be exploited in the near-infrared, a spectral multiplexing density over an order of magnitude greater than attainable

Bhatia, Sangeeta

105

Application of near-infrared spectroscopy for discrimination of mental A. Sassarolia  

E-Print Network [OSTI]

Application of near-infrared spectroscopy for discrimination of mental workloads A. Sassarolia , F, McLean Hospital, Belmont, MA 02478 ABSTRACT We show the potential of functional near-infrared of electroencephalography. Keywords: functional near-infrared spectroscopy, brain imaging, mental workload, human computer

Jacob, Robert J.K.

106

Remote sensing of Greenland ice sheet using multispectral near-infrared and visible radiances  

E-Print Network [OSTI]

Remote sensing of Greenland ice sheet using multispectral near-infrared and visible radiances Petr remote-sensing algorithm that utilizes reflected visible and near-infrared radiation to discriminate using multispectral near-infrared and visible radiances, J. Geophys. Res., 112, D24S20, doi:10

Dozier, Jeff

107

Human-Computer Interaction and Brain Measurement Using Functional Near-Infrared Spectroscopy  

E-Print Network [OSTI]

Human-Computer Interaction and Brain Measurement Using Functional Near-Infrared Spectroscopy Leanne Functional near-infrared spectroscopy (fNIRS) is an emerging non-invasive, lightweight imaging tool which can remains a challenge. We investigate functional near-infrared spectroscopy (fNIRS) [1], a relatively new

Jacob, Robert J.K.

108

Visualizing Chemical Compositions and Kinetics of Sol-Gel by Near-Infrared Multispectral Imaging  

E-Print Network [OSTI]

Visualizing Chemical Compositions and Kinetics of Sol-Gel by Near-Infrared Multispectral Imaging, Milwaukee, Wisconsin 53201 Kinetics of sol-gel formation were studied using the recently developed near-infrared been studied extensively by many different spectroscopic techniques.4-15 Among them, the near-infrared

Reid, Scott A.

109

Head-up tilt and hyperventilation produce similar changes in cerebral oxygenation and blood volume: an observational comparison study using frequency-domain near-infrared spectroscopy  

E-Print Network [OSTI]

26. Rolfe P. In vivo near-infrared spectroscopy. Annu Revage using phase resolved near infrared spectroscopy. Pediatrin neonates determined by near-infrared time-resolved

2012-01-01T23:59:59.000Z

110

Near-Infrared Adaptive Optics Imaging of the Central Regions of Nearby Sc Galaxies: I. M33  

E-Print Network [OSTI]

Near-infrared images obtained with the Canada-France-Hawaii Telescope (CFHT) Adaptive Optics Bonnette (AOB) are used to investigate the stellar content within 18 arcsec of the center of the Local Group spiral galaxy M33. AGB stars with near-infrared spectral-energy distributions similar to those of giants in the solar neighborhood and Baade's Window are detected over most of the field. The bolometric luminosity function (LF) of these stars has a discontinuity near M_{bol} = -5.25, and comparisons with evolutionary tracks suggest that most of the AGB stars formed in a burst of star formation 1 - 3 Gyr in the past. The images are also used to investigate the integrated near-infrared photometric properties of the nucleus and the central light concentration. The nucleus is bluer than the central light concentration, in agreement with previous studies at visible wavelengths. The CO index of the central light concentration 0.5 arcsec from the galaxy center is 0.05, which corresponds to [Fe/H] = -1.2 for simple stellar systems. Hence, the central light concentration could not have formed from the chemically-enriched material that dominates the present-day inner disk of M33.

T. J. Davidge

1999-10-18T23:59:59.000Z

111

Through Skull Fluorescence Imaging of the Brain in a New Near-Infrared Window  

E-Print Network [OSTI]

To date, brain imaging has largely relied on X-ray computed tomography and magnetic resonance angiography with limited spatial resolution and long scanning times. Fluorescence-based brain imaging in the visible and traditional near-infrared regions (400-900 nm) is an alternative but currently requires craniotomy, cranial windows and skull thinning techniques, and the penetration depth is limited to 1-2 mm due to light scattering. Here, we report through-scalp and through-skull fluorescence imaging of mouse cerebral vasculature without craniotomy utilizing the intrinsic photoluminescence of single-walled carbon nanotubes in the 1.3-1.4 micrometre near-infrared window. Reduced photon scattering in this spectral region allows fluorescence imaging reaching a depth of >2 mm in mouse brain with sub-10 micrometre resolution. An imaging rate of ~5.3 frames/s allows for dynamic recording of blood perfusion in the cerebral vessels with sufficient temporal resolution, providing real-time assessment of blood flow anomaly...

Hong, Guosong; Chang, Junlei; Antaris, Alexander L; Chen, Changxin; Zhang, Bo; Zhao, Su; Atochin, Dmitriy N; Huang, Paul L; Andreasson, Katrin I; Kuo, Calvin J; Dai, Hongjie

2014-01-01T23:59:59.000Z

112

Near-infrared spectrometric determination of dipyrone in closed ampoules  

Science Journals Connector (OSTI)

The present paper proposes an analytical method for fast near-infrared (NIR) determination of dipyrone in injectable formulations with a nominal content of 50.0% m v?1 without violation of the ampoule. For this purpose, two multivariate calibration methods are evaluated, namely Partial-Least-Squares (PLS) and Multiple Linear Regression (MLR) with variable selection by the Successive Projections Algorithm (SPA). The resulting models comprised four latent variables (PLS) and five spectral variables (MLR-SPA). Appropriate predictions were obtained in both cases, with RMSEP values of 0.39 (PLS) and 0.35% m v?1 (MLR-SPA) and correlation coefficients of 0.9970 (PLS) and 0.9975 (MLR-SPA) for a calibration range of 40–60% m v?1. No systematic error was observed and no significant differences were found between the predicted and reference values, according to a paired t-test at 95% confidence level.

Fátima Aparecida C. Sanches; Rosimeri B. Abreu; Márcio José Coelho Pontes; Flaviano C. Leite; Daniel Jackson E. Costa; Roberto Kawakami H. Galvão; Mario Cesar U. Araujo

2012-01-01T23:59:59.000Z

113

High speed single photon detection in the near-infrared  

E-Print Network [OSTI]

InGaAs avalanche photodiodes (APDs) are convenient for single photon detection in the near-infrared (NIR) including the fibre communication bands (1.31/1.55 $\\mu$m). However, to suppress afterpulse noise due to trapped avalanche charge, they must be gated with MHz repetition frequencies, thereby severely limiting the count rate in NIR applications. Here we show gating frequencies for InGaAs-APDs well beyond 1 GHz. Using a self-differencing technique to sense much weaker avalanches, we reduce drastically afterpulse noise. At 1.25 GHz, we obtain a detection efficiency of 10.8% with an afterpulse probability of 6.16%. In addition, the detector features low jitter (55 ps) and a count rate of 100 MHz.

Z. L. Yuan; B. E. Kardynal; A. W. Sharpe; A. J. Shields

2007-07-29T23:59:59.000Z

114

Near Infrared observations of Soft X-ray selected AGN  

E-Print Network [OSTI]

We report the results of near infrared observations of 19 soft X-ray selected AGN. The goal of the observations was to search for strong, narrow Paschen-alpha or Brackett-gamma emission lines, as a sign of nuclear starbursts. We found Pa-alpha emission in the spectra of 11 sources and Br-gamma in at least five. Strong NIR emission has been found in two sources, CBS 126 and Mkn 766, both objects with strong [OIII]5007 emission, weak FeII emission and wavelength dependent degree of polarization in the optical. Classical Narrow Line Seyfert 1 galaxies do not show exceptionally strong NIR emission lines. We present the results of our study and discuss how our findings fit into an evolutionary scheme of AGN.

D. Grupe; H. -C Thomas

2002-02-21T23:59:59.000Z

115

Thermal And-Or Near Infrared At Fish Lake Valley Area (Deymonaz...  

Open Energy Info (EERE)

Additional References Retrieved from "http:en.openei.orgwindex.php?titleThermalAnd-OrNearInfraredAtFishLakeValleyArea(Deymonaz,EtAl.,2008)&oldid386621...

116

Near-Infrared Electrochromic and Chiroptical Switching Materials: Design, Synthesis, and Characterization of Chiral Organogels  

E-Print Network [OSTI]

Near-Infrared Electrochromic and Chiroptical Switching Materials: Design, Synthesis regions have been realized using a low molecular weight gel as a chiral scaffold and electrochromic

Wan, Xin-hua

117

Rapid nutrient determination of sugarcane milling by-products using near infrared spectroscopy.  

E-Print Network [OSTI]

??This thesis investigates the use of near infrared (NIR) spectroscopic methods for rapid measurement of nutrient elements in mill mud and mill ash. Adoption of… (more)

Keeffe, Eloise Caitlin

2013-01-01T23:59:59.000Z

118

Analysis of Near-Infrared Phase Effects on Biometric Iris Data.  

E-Print Network [OSTI]

??The purpose of this research is to ascertain potential iris scan data variations from near infrared waves derived from fluorescent illumination. Prior studies of iris… (more)

Stevenson, Brady Roos

2006-01-01T23:59:59.000Z

119

Mass constraints to Sco X-1 from Bowen flourescence and deep near-infrared spectroscopy  

E-Print Network [OSTI]

More than 50 years after the dawn of X-ray astronomy, the dynamical parameters of the prototypical X-ray binary Sco X-1 are still unknown. We combine a Monte Carlo analysis, which includes all the previously known orbital parameters of the system, along with the K-correction to set dynamical constraints to the masses of the compact object (M1near-infrared spectrum of the source to date. There is no evidence of donor star features on it, but we are able to constrain the veiling factor as a function of the spectral type of the secondary star. The combination of both techniques restricts the spectral type of the donor to be later than K4 and luminosity class IV. It also constrains the contribution of the companion light to the infrared emission of Sco X-1 to be lower than 33 percent. This implies ...

Sánchez, D Mata; Casares, J; Steeghs, D; Almeida, C Ramos; Pulido, J A Acosta

2015-01-01T23:59:59.000Z

120

AKARI NEAR-INFRARED SPECTROSCOPY OF LUMINOUS INFRARED GALAXIES  

SciTech Connect (OSTI)

We present the AKARI near-infrared (NIR; 2.5-5 {mu}m) spectroscopic study of 36 (ultra)luminous infrared galaxies ((U)LIRGs) at z = 0.01-0.4. We measure the NIR spectral features including the strengths of 3.3 {mu}m polycyclic aromatic hydrocarbon emission and hydrogen recombination lines (Br{alpha} and Br{beta}), optical depths at 3.1 and 3.4 {mu}m, and NIR continuum slope. These spectral features are used to identify optically elusive, buried active galactic nuclei (AGNs). We find that half of the (U)LIRGs optically classified as non-Seyferts show AGN signatures in their NIR spectra. Using a combined sample of (U)LIRGs with NIR spectra in the literature, we measure the contribution of buried AGNs to the infrared luminosity from the spectral energy distribution fitting to the IRAS photometry. The contribution of these buried AGNs to the infrared luminosity is 5%-10%, smaller than the typical AGN contribution of (U)LIRGs including Seyfert galaxies (10%-40%). We show that NIR continuum slopes correlate well with WISE [3.4]-[4.6] colors, which would be useful for identifying a large number of buried AGNs using the WISE data.

Lee, Jong Chul; Lee, Myung Gyoon [Astronomy Program, Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of); Hwang, Ho Seong [CEA Saclay/Service d'Astrophysique, F-91191 Gif-sur-Yvette (France); Kim, Minjin; Lee, Joon Hyeop, E-mail: mglee@astro.snu.ac.kr, E-mail: jclee@kasi.re.kr, E-mail: mkim@kasi.re.kr, E-mail: jhl@kasi.re.kr, E-mail: hhwang@cfa.harvard.edu [Korea Astronomy and Space Science Institute, Daejeon 305-348 (Korea, Republic of)

2012-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Three-photon near-infrared quantum cutting in Tm{sup 3+}-doped transparent oxyfluoride glass ceramics  

SciTech Connect (OSTI)

Efficient three-step sequential three-photon near-infrared (NIR) quantum cutting in Tm{sup 3+}-doped transparent oxyfluoride glass ceramics has been demonstrated, where an absorbed blue photon could be cut into three NIR photons at 1190, 1460, and 1800 nm with quantum yield greater than unity. On the basis of static and dynamic photoemission, monitored excitation, and time-resolved fluorescence spectra, we investigate in detail the underlying optoelectronic mechanism. Further development of an efficient triply-cutting material might open up a path towards ultra-efficient photonic devices, which enables more photons emitted than absorbed in the excitation process.

Yu, D. C.; Zhang, J. P.; Chen, Q. J.; Zhang, W. J.; Yang, Z. M.; Zhang, Q. Y. [State Key Laboratory of Luminescence Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641 (China)

2012-10-22T23:59:59.000Z

122

Near-Infrared Electrochromism in Electroactive Pentacenediquinone-Containing Poly(aryl ether)s  

E-Print Network [OSTI]

Near-Infrared Electrochromism in Electroactive Pentacenediquinone-Containing Poly(aryl etherVed October 21, 2005 The synthesis and near-infrared electrochromic properties of pentacenediquinone-infrared electrochromic properties of pentacenediquinone-containing poly(aryl ether)s were studied

Wan, Xin-hua

123

Photoconductivity of single-wall carbon nanotubes under continuous-wave near-infrared illumination  

E-Print Network [OSTI]

Photoconductivity of single-wall carbon nanotubes under continuous-wave near-infrared illumination studied under continuous-wave near-infrared illumination. The photocurrent exhibits a linear response, we report the observation of cw photo- conductivity of single-wall carbon nanotubes in the near

Euler, William B.

124

Femtosecond Near-Infrared Laser Desorption of Multilayer Benzene on Pt{111}: A Molecular Newton's Cradle?  

E-Print Network [OSTI]

Femtosecond Near-Infrared Laser Desorption of Multilayer Benzene on Pt{111}: A Molecular Newton Recently, the intense near-infrared laser desorption of intact benzene molecules has been reported.1 Three, 1999; In Final Form: February 11, 2000 Velocity distributions resulting from the intense, near-IR laser

Levis, Robert J.

125

The Mauna Kea Observatories Near-Infrared Filter Set. III. Isophotal Wavelengths and Absolute Calibration  

E-Print Network [OSTI]

The isophotal wavelengths, flux densities, and AB magnitudes for Vega (alpha Lyr) are presented for the Mauna Kea Observatories near-infrared filter set. We show that the near-infrared absolute calibration for Vega determined by Cohen et al. and Megessier are consistent within the uncertainties, so that either absolute calibration may be used.

A. T. Tokunaga; W. D. Vacca

2005-02-05T23:59:59.000Z

126

Temperature-Tuning of Near-Infrared Monodisperse Quantum Dot Solids at  

E-Print Network [OSTI]

Temperature-Tuning of Near-Infrared Monodisperse Quantum Dot Solids at 1.5 µm for Controllable Fo is important in a wide-variety of applications, especially in the near-infrared region where applications transfer in large, monodisperse lead sulfide quantum dots with ground-state transitions near 1.5 µm (0.8 e

Hone, James

127

Near-infrared spectral mapping of Titan's mountains and channels Jason W. Barnes,1,2  

E-Print Network [OSTI]

Near-infrared spectral mapping of Titan's mountains and channels Jason W. Barnes,1,2 Jani Radebaugh bright spectral units based on our findings. Citation: Barnes, J. W., et al. (2007), Near-infrared ranges on Titan using data from Cassini's Visual and Infrared Mapping Spectrometer (VIMS) obtained during

Perfect, Ed

128

Electrical Conductivity, Near-Infrared Absorption, and Thermal Lens Spectroscopic Studies of Percolation of Microemulsions  

E-Print Network [OSTI]

Electrical Conductivity, Near-Infrared Absorption, and Thermal Lens Spectroscopic Studies studied below and above the percolation thresholds by electrical conductivity, near-infrared absorption. In this work the structure of microemulsions was investigated by using the near-IR absorption and thermal lens

Reid, Scott A.

129

Near-infrared thermal lens spectrometer based on an erbium-doped fiber amplifier and  

E-Print Network [OSTI]

Near-infrared thermal lens spectrometer based on an erbium-doped fiber amplifier and an acousto, guanosine, and thymidine is described. © 1997 Optical Society of America Key words: Near infrared, thermal measurements of absorption in the near-IR region has been developed. In this instrument the near-IR excitation

Reid, Scott A.

130

Near-Infrared Spectrometric Determination of Di-and Tripeptides Synthesized by a Combinatorial  

E-Print Network [OSTI]

Near-Infrared Spectrometric Determination of Di- and Tripeptides Synthesized by a Combinatorial.O. Box 1881, Milwaukee, Wisconsin 53201 A new method based on near-infrared (NIR) spectrometry of reaction kinetics.1-3 To date, near- and middle-infrared methods are probably the most promising technique

Reid, Scott A.

131

NEAR-INFRARED POLARIMETRY OF A NORMAL SPIRAL GALAXY VIEWED THROUGH THE TAURUS MOLECULAR CLOUD COMPLEX  

SciTech Connect (OSTI)

Few normal galaxies have been probed using near-infrared polarimetry, even though it reveals magnetic fields in the cool interstellar medium better than either optical or radio polarimetry. Deep H-band (1.6 {mu}m) linear imaging polarimetry toward Taurus serendipitously included the galaxy 2MASX J04412715+2433110 with adequate sensitivity and resolution to map polarization across nearly its full extent. The observations revealed the galaxy to be a steeply inclined ({approx}75 Degree-Sign ) disk type with a diameter, encompassing 90% of the Petrosian flux, of 4.2 kpc at a distance of 53 Mpc. Because the sight line passes through the Taurus Molecular Cloud complex, the foreground polarization needed to be measured and removed. The foreground extinction A{sub V} of 2.00 {+-} 0.10 mag and reddening E(H - K) of 0.125 {+-} 0.009 mag were also assessed and removed, based on analysis of Two Micron All Sky Survey, UKIRT Infrared Deep Sky Survey, Spitzer, and Wide-field Infrared Survey Explorer photometry using the Near-Infrared Color Excess, NICE-Revisited, and Rayleigh-Jeans Color Excess methods. Corrected for the polarized foreground, the galaxy polarization values range from 0% to 3%. The polarizations are dominated by a disk-parallel magnetic field geometry, especially to the northeast, while either a vertical field or single scattering of bulge light produces disk-normal polarizations to the southwest. The multi-kiloparsec coherence of the magnetic field revealed by the infrared polarimetry is in close agreement with short-wavelength radio synchrotron observations of edge-on galaxies, indicating that both cool and warm interstellar media of disk galaxies may be threaded by common magnetic fields.

Clemens, Dan P.; Cashman, L. R.; Pavel, M. D., E-mail: clemens@bu.edu, E-mail: pavelmi@utexas.edu, E-mail: lcashman@bu.edu [Institute for Astrophysical Research, Boston University, 725 Commonwealth Avenue, Boston, MA 02215 (United States)

2013-03-15T23:59:59.000Z

132

Thermal And-Or Near Infrared At Fish Lake Valley Area (Deymonaz, Et Al.,  

Open Energy Info (EERE)

Thermal And-Or Near Infrared At Fish Lake Valley Area (Deymonaz, Et Al., Thermal And-Or Near Infrared At Fish Lake Valley Area (Deymonaz, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Fish Lake Valley Area (Deymonaz, Et Al., 2008) Exploration Activity Details Location Fish Lake Valley Area Exploration Technique Thermal And-Or Near Infrared Activity Date Usefulness not indicated DOE-funding Unknown Notes For this project, fused imagery was created using ASTER data and USGS Digital Orthophoto Quandrangles (DOQs). The ASTER data have a spatial resolution of 15 m for the visible to infrared and near_infrared bands, and 30 m for shortwave_infrared bands; with a cost of $85.00 per 60 x 60 km image. Thermal anomalies were mapped using ASTER kinetic temperature data

133

Thermal And-Or Near Infrared At Yellowstone Region (Hellman & Ramsey, 2004)  

Open Energy Info (EERE)

Thermal And-Or Near Infrared At Yellowstone Region (Hellman & Ramsey, 2004) Thermal And-Or Near Infrared At Yellowstone Region (Hellman & Ramsey, 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Yellowstone Region (Hellman & Ramsey, 2004) Exploration Activity Details Location Yellowstone Caldera Geothermal Region Exploration Technique Thermal And-Or Near Infrared Activity Date Usefulness useful DOE-funding Unknown References Melanie J. Hellman, Michael S. Ramsey (2004) Analysis Of Hot Springs And Associated Deposits In Yellowstone National Park Using Aster And Aviris Remote Sensing Retrieved from "http://en.openei.org/w/index.php?title=Thermal_And-Or_Near_Infrared_At_Yellowstone_Region_(Hellman_%26_Ramsey,_2004)&oldid=401329" Category: Exploration Activities

134

Near-Infrared Evidence for a Sudden Temperature Increase in Eta Carinae  

E-Print Network [OSTI]

Aims. Eta Car's ultra-violet, optical, and X-ray light curves and its spectrum suggest a physical change in its stellar wind over the last decade. It was proposed that the mass-loss rate decreased by a factor of about 2 in the last 15 years. We complement these recent results by investigating the past evolution and the current state of eta Car in the near-infrared (IR). Methods. We present JHKL photometry of eta Car obtained at SAAO Sutherland from 2004-2013 with the Mk II photometer at the 0.75-m telescope and JHKs photometry with SIRIUS at the 1.4-m IRSF telescope from 2012-2013. The near-IR light curves since 1972 are analyzed. Results. The long-term brightening trends in eta Car's JHKL light curves were discontinuous around the 1998 periastron passage. After 1998, the star shows excess emission above the extrapolated trend from earlier dates, foremost in J and H, and the blueward, cyclical progression in its near-IR colors is accelerated. The near-IR color evolution is strongly correlated with the periast...

Mehner, Andrea; Whitelock, Patricia; Nagayama, Takahiro; Feast, Michael; van Wyk, Francois; de Wit, Willem-Jan

2014-01-01T23:59:59.000Z

135

Enhanced visible and near-infrared capabilities of the JET mirror-linked divertor spectroscopy system  

SciTech Connect (OSTI)

The mirror-linked divertor spectroscopy diagnostic on JET has been upgraded with a new visible and near-infrared grating and filtered spectroscopy system. New capabilities include extended near-infrared coverage up to 1875 nm, capturing the hydrogen Paschen series, as well as a 2 kHz frame rate filtered imaging camera system for fast measurements of impurity (Be II) and deuterium D?, D?, D? line emission in the outer divertor. The expanded system provides unique capabilities for studying spatially resolved divertor plasma dynamics at near-ELM resolved timescales as well as a test bed for feasibility assessment of near-infrared spectroscopy.

Lomanowski, B. A., E-mail: b.a.lomanowski@durham.ac.uk; Sharples, R. M. [Centre for Advanced Instrumentation, Department of Physics, Durham University, Durham DH1 3LE (United Kingdom); Meigs, A. G.; Conway, N. J.; Zastrow, K.-D.; Heesterman, P.; Kinna, D. [EURATOM/CCFE Fusion Association, Culham Science Center, Abingdon OX14 3DB (United Kingdom); Collaboration: JET-EFDA Team

2014-11-15T23:59:59.000Z

136

Thermal And-Or Near Infrared At Marysville Mt Area (Blackwell) | Open  

Open Energy Info (EERE)

Marysville Mt Area (Blackwell) Marysville Mt Area (Blackwell) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Marysville Mt Area (Blackwell) Exploration Activity Details Location Marysville Mt Area Exploration Technique Thermal And-Or Near Infrared Activity Date Usefulness not indicated DOE-funding Unknown Notes No further mention of infrared photography. References D. D. Blackwell (Unknown) Exploration In A Blind Geothermal Area Near Marysville, Montana, Usa Retrieved from "http://en.openei.org/w/index.php?title=Thermal_And-Or_Near_Infrared_At_Marysville_Mt_Area_(Blackwell)&oldid=386636" Category: Exploration Activities What links here Related changes Special pages Printable version Permanent link Browse properties

137

A Monitoring Campaign for Luhman 16AB. I. Detection of Resolved Near-Infrared Spectroscopic Variability  

E-Print Network [OSTI]

[abbreviated] We report resolved near-infrared spectroscopic monitoring of the nearby L dwarf/T dwarf binary WISE J104915.57-531906.1AB (Luhman 16AB), as part of a broader campaign to characterize the spectral energy distribution and temporal variability of this system. A continuous 45-minute sequence of low-resolution IRTF/SpeX data spanning 0.8-2.4 micron were obtained, concurrent with combined-light optical photometry with ESO/TRAPPIST. Our spectral observations confirm the flux reversal of this binary, and we detect a wavelength-dependent decline in the relative spectral fluxes of the two components coincident with a decline in the combined-light optical brightness of the system over the course of the observation. These data are successfully modeled as a combination of brightness and color variability in the T0.5 Luhman 16B, consistent cloud variations; and no significant variability in L7.5 Luhman 16A. We estimate a peak-to-peak amplitude of 13.5% at 1.25 micron over the full lightcurve. Using a two-spot...

Burgasser, Adam J; Faherty, Jacqueline K; Radigan, Jacqueline; J., Amaury H M; Plavchan, Peter; Street, Rachel; Jehin, E; Delrez, L; Opitom, C

2014-01-01T23:59:59.000Z

138

Near infrared 3~~ overtone band of Hl Brian F. Ventrudo and Daniel T. Cassidy  

E-Print Network [OSTI]

Near infrared 3~~ overtone band of Hl Brian F. Ventrudo and Daniel T. Cassidy Department transitions. Short-external-cavity InCaAsP diodes were used as tunable near infrared radiation sources and understand the spectrum of vibra- tional excited states. This paper updates the list of observed near-infrared

Oka, Takeshi

139

Near-infrared sideband generation induced by intense far-infrared radiation in GaAs quantum wells  

E-Print Network [OSTI]

Near-infrared sideband generation induced by intense far-infrared radiation in GaAs quantum wells J illuminated with near-infrared NIR radiation at frequency nir and intense far-infrared FIR radiation from and quenching of photoluminescence PL .8,9 The nonlinear interaction of FIR and near-infrared NIR radiation

Kono, Junichiro

140

Near-infrared double negative metamaterials Shuang Zhang, Wenjun Fan, K. J. Malloy and S. R. J. Brueck  

E-Print Network [OSTI]

Near-infrared double negative metamaterials Shuang Zhang, Wenjun Fan, K. J. Malloy and S. R. J and negative over an overlapping near-infrared wavelength range resulting in a low loss negative. Brueck, "Demonstration of Near-Infrared Negative-Index Materials," Postdeadline Paper at OSA Topical

New Mexico, University of

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141

C.D. Tran, J. Near Infrared Spectrosc. 8, 89102 (2000) 89 NIR Publications 2000, ISSN 0967-0335  

E-Print Network [OSTI]

C.D. Tran, J. Near Infrared Spectrosc. 8, 89­102 (2000) 89 © NIR Publications 2000, ISSN 0967-0335 Visualising chemical composition and reaction kinetics by the near infrared multispectral imaging technique and near infrared has been developed. In this instrument, an acousto-optic tunable filter (AOTF) is used

Reid, Scott A.

142

Determination by Near-Infrared Spectroscopy of Perseitol Used as a Marker for the Botanical Origin of Avocado  

E-Print Network [OSTI]

Determination by Near-Infrared Spectroscopy of Perseitol Used as a Marker for the Botanical Origin University of Jerusalem, Rehovot 76100, Israel This paper reports the application of near-infrared (NIR properties (oily taste) characteristic of avocado honey (Ohad Afik, unpublished data). Near-infrared

Delaplane, Keith S.

143

Examination of ChlorinBacteriochlorin Energy-transfer Dyads as Prototypes for Near-infrared Molecular Imaging Probes  

E-Print Network [OSTI]

Examination of Chlorin­Bacteriochlorin Energy-transfer Dyads as Prototypes for Near-infrared features across the red and near-infrared (NIR) regions, tunable excited-state lifetimes (10 ns absorption and efficient emission in the red or near-infrared (NIR) spectral region, (2) sharp absorption

Larson-Prior, Linda

144

Combining visible and near-infrared images for realistic skin Clement Fredembach, Nathalie Barbuscia and Sabine Susstrunk  

E-Print Network [OSTI]

Combining visible and near-infrared images for realistic skin smoothing Cl´ement Fredembach components of skin colour, have little absorption in the near-infrared part of the spectrum propose that near-infrared images provide information that can be used to automatically smooth skin tones

Salvaggio, Carl

145

Characteristic evaluation of a near-infrared Fabry-Perot filter for the InfraRed Imaging Magnetograph (IRIM)  

E-Print Network [OSTI]

Characteristic evaluation of a near-infrared Fabry-P´erot filter for the InfraRed Imaging solar two-dimensional narrow-band spectro-polarimeter working in the near infrared from 1.0 µm to 1.7 µm, this paper outlines a set of methods to evaluate the near infrared Fabry-P´erot etalon. Two

146

Origins of Spatial Working Memory Deficits in Schizophrenia: An Event-Related fMRI and Near-Infrared  

E-Print Network [OSTI]

Origins of Spatial Working Memory Deficits in Schizophrenia: An Event-Related fMRI and Near-Infrared performance with the near-infrared spectroscopy (NIRS) using the same spatial WM task. Distinct types S (2008) Origins of Spatial Working Memory Deficits in Schizophrenia: An Event-Related fMRI and Near-Infrared

Park, Sohee

147

Near to the Brain: Functional Near-Infrared Spectroscopy as a Lightweight Brain Imaging Technique for Visualization  

E-Print Network [OSTI]

Near to the Brain: Functional Near-Infrared Spectroscopy as a Lightweight Brain Imaging Technique the use of cumbersome or expensive brain imaging equipment. In recent years, functional near-infrared near-infrared spectroscopy (fNIRS) is an emerging technology for brain imaging being developed

Tomkins, Andrew

148

A Near-Infrared Cell Tracker Reagent for Multiscopic In Vivo Imaging and Quantification of Leukocyte Immune  

E-Print Network [OSTI]

A Near-Infrared Cell Tracker Reagent for Multiscopic In Vivo Imaging and Quantification in a broad, multi-scale context. Although tomographic and microscopy-based far and near infrared fluorescence imaging. Citation: Swirski FK, Berger CR, Figueiredo J-L, Mempel TR, von Andrian UH, et al (2007) A Near-Infrared

von Andrian, Ulrich H.

149

Extended Near-Infrared Resonance Raman Investigations of an Organic Mixed-Valence System: Diazatetracyclodiene Radical Cation  

E-Print Network [OSTI]

Extended Near-Infrared Resonance Raman Investigations of an Organic Mixed-Valence System near-infrared region show that six modes are coupled to the intramolecular charge-transfer transition transfer (IVCT) absorption bands in the red to near- infrared region of the spectrum, which are, at least

150

STh3M.6.pdf CLEO:2014 2014 OSA Silicon Chip Based Near-Infrared and Mid-Infrared Optical  

E-Print Network [OSTI]

STh3M.6.pdf CLEO:2014 © 2014 OSA Silicon Chip Based Near-Infrared and Mid-Infrared Optical near-infrared and mid-infrared with detection limit down to 1ppb. Strip waveguide, slot waveguide and PC-based chip integrated optical absorption spectroscopy devices are compared in near-infrared

Chen, Ray

151

The Mauna Kea Observatories Near-Infrared Filter Set. I: Defining Optima 1-5m Bandpasses  

E-Print Network [OSTI]

The Mauna Kea Observatories Near-Infrared Filter Set. I: Defining Optima 1-5µm Bandpasses D. A #12;The Mauna Kea Observatories Near-Infrared Filter Set. I: Defining Optimal 1­5 µm Bandpasses D. A. This was discussed in detail by Young et al. (1994). The Mauna Kea Observatories Near-Infrared (MKO-NIR) filters

152

Achieving Subdiffraction Imaging through Bound Surface States in Negative Refraction Photonic Crystals in the Near-Infrared Range  

E-Print Network [OSTI]

Crystals in the Near-Infrared Range R. Chatterjee,1 N. C. Panoiu,2 K. Liu,1 Z. Dios,1 M. B. Yu,3 M. T. Doan improvement over recent efforts in the near-infrared range, with a 0.4 THz bandwidth. Supported by numerical structures [7], and dielectric metamaterials in the midinfrared [8] and near- infrared [9], also suggest

Hone, James

153

Thermal And-Or Near Infrared At Mt Ranier Area (Frank, 1995) | Open Energy  

Open Energy Info (EERE)

Thermal And-Or Near Infrared At Mt Ranier Area Thermal And-Or Near Infrared At Mt Ranier Area (Frank, 1995) Exploration Activity Details Location Mt Ranier Area Exploration Technique Thermal And-Or Near Infrared Activity Date Usefulness useful DOE-funding Unknown Notes Infrared images acquired through joint US. Department of Energy and U.S. Geological Survey efforts (Kieffer et al., 1982) show a representative pattern of heat emission from the summit area (Fig. 5). References David Frank (1995) Surficial Extent And Conceptual Model Of Hydrothermal System At Mount Rainier, Washington Retrieved from "http://en.openei.org/w/index.php?title=Thermal_And-Or_Near_Infrared_At_Mt_Ranier_Area_(Frank,_1995)&oldid=386481" Categories: Exploration Activities DOE Funded Activities What links here Related changes

154

Thermal And-Or Near Infrared At Alum Area (DOE GTP) | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Thermal And-Or Near Infrared At Alum Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Alum Geothermal Area (DOE GTP) Exploration Activity Details Location Alum Geothermal Area Exploration Technique Thermal And-Or Near Infrared Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Thermal_And-Or_Near_Infrared_At_Alum_Area_(DOE_GTP)&oldid=402991" Categories: Exploration Activities

155

Thermal And-Or Near Infrared At Coso Geothermal Area (2009) | Open Energy  

Open Energy Info (EERE)

And-Or Near Infrared At Coso Geothermal Area (2009) And-Or Near Infrared At Coso Geothermal Area (2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Coso Geothermal Area (2009) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Thermal And-Or Near Infrared Activity Date 2009 Usefulness useful DOE-funding Unknown Exploration Basis Determine the importance of elevation and temperature inversions using thermal infrared satellite images Notes Examples of nighttime temperature inversions are shown in thermal infrared satellite images collected over the Coso geothermal field in eastern California. Temperature-elevation plots show the normal trend of temperature decrease with elevation, on which temperature inversions appear

156

Quantifying Ethanol Content of Beer Using Interpretive Near-Infrared Spectroscopy  

Science Journals Connector (OSTI)

On the basis of absorption measurements in the near-infrared (NIR) spectral range, a new method for the quantification of the ethanol content of beer is presented. Instead of the...

Engelhard, Sonja; Löhmannsröben, Hans-Gerd; Schael, Frank

2004-01-01T23:59:59.000Z

157

Detection of Ethanol in Wines Using Optical-Fiber Measurements and Near-Infrared Analysis  

Science Journals Connector (OSTI)

Optical-fiber measurements coupled with near-infrared analysis is used to predict the ethanol content of wine samples to within ±0.33 volume percent. Because telecommunications-grade...

Buchanan, B R; Honigs, D E; Lee, Cynthia J; Roth, William

1988-01-01T23:59:59.000Z

158

Near-infrared photodetector consisting of J-aggregating cyanine dye and metal oxide thin films  

E-Print Network [OSTI]

We demonstrate a near-infrared photodetector that consists of a thin film of the J-aggregating cyanine dye, U3, and transparent metal-oxide charge transport layers. The high absorption coefficient of the U3 film, combined ...

Osedach, Timothy P.

159

Extended Range Near-Infrared Imaging of Water and Oil in Facial Skin  

Science Journals Connector (OSTI)

Recently, near-infrared (NIR) imaging has been applied to detecting changes in skin hydration using the water OH band centered near 1460 nm. However, assigning changes in the...

Egawa, Mariko; Yanai, Motohiro; Kikuchi, Kumiko; Masuda, Yuji

2011-01-01T23:59:59.000Z

160

The Near Infrared Absorption Band of Liquid Water at 1.79?  

Science Journals Connector (OSTI)

The near infrared absorption band of liquid water at 1.79? has been studied at various temperatures. No apparent changes in the band were detected in the temperature range from 4°C to 137°C.

J. R. Collins

1937-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Analysis of Brain Networks during Resting State with Near-Infrared Spectroscopy  

Science Journals Connector (OSTI)

We investigated the resting-state functional connectivity of near-infrared spectroscopy data of the whole head with complex networks. We show that the graph parameters measured for 11...

Cano, Reember; Tapia, Luis C; Castellano, Gabriela; Mesquita, Rickson C

162

Near-Infrared Laser Pulse Induced Amplitude Modulation of Terahertz Quantum Cascade Lasers  

Science Journals Connector (OSTI)

We have demonstrated amplitude modulation of terahertz quantum cascade lasers by means of the injection of near-infrared laser pulses. Injected 770nm and 1350nm laser pulses both...

Sakasegawa, Yohei; Saito, Shingo; Sekine, Norihiko; Ashida, Masaaki; Hosako, Iwao

163

Astrophotonic OH suppression for deep ground-based near-infrared spectroscopy.  

E-Print Network [OSTI]

??The study of the astrophysics of galaxies in the early Universe requires deep near-infrared spectroscopy in order to measure the key diagnostic rest-frame ultraviolet and… (more)

Trinh, Christopher

2013-01-01T23:59:59.000Z

164

The Near-infrared Period-luminosity Relations of Cepheids in the Large Magellanic Cloud  

E-Print Network [OSTI]

We present near-infrared (J & Ks) observations of Cepheids in the Large Magellanic Cloud. The goals of these observations are to better characterize the Cepheid Period-Luminosity relation at these wavelengths, especially for periods below 10 days...

Mahzooni, Salma

2011-08-08T23:59:59.000Z

165

A systematic comparison of motion artifact correction techniques for functional near-infrared spectroscopy  

E-Print Network [OSTI]

Near-infrared spectroscopy (NIRS) is susceptible to signal artifacts caused by relative motion between NIRS optical fibers and the scalp. These artifacts can be very damaging to the utility of functional NIRS, particularly ...

Cooper, Robert J.

166

Type II-P supernovae as standardized candles: improvements using near-infrared data .  

E-Print Network [OSTI]

??We present the first near-infrared Hubble diagram for Type II-P supernovae (SNe), to further explore their value as distance indicators.We use a modified version of… (more)

Maguire, K.

2010-01-01T23:59:59.000Z

167

Measurement of moisture and total reducing sugars using Near Infrared Spectroscopy  

E-Print Network [OSTI]

industrial applications. In this project, the accuracy and feasibility of measuring moisture and total reducing sugar content in a vegetable medium using a Near Infrared Spectroscopy technique was investigated as an alternative to slow and tedious classical...

Mehrubeoglu, Mehrube

2012-06-07T23:59:59.000Z

168

Near-infrared spectroscopy for the measurement of glucose in an integrated rotating wall vessel  

E-Print Network [OSTI]

culture media cannot fulfill these requirements. Therefore a near-infrared spectroscopy system is proposed that can potentially perform the required measurements on-line and without any interaction with the cell culture media. Two types of solutions...

Galvan, Mark

2012-06-07T23:59:59.000Z

169

Thermal And-Or Near Infrared At Raft River Geothermal Area (1974-1976) |  

Open Energy Info (EERE)

Thermal And-Or Near Infrared At Raft River Geothermal Area (1974-1976) Thermal And-Or Near Infrared At Raft River Geothermal Area (1974-1976) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Raft River Geothermal Area (1974-1976) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Thermal And-Or Near Infrared Activity Date 1974 - 1976 Usefulness useful DOE-funding Unknown Exploration Basis Reconnaissance geothermal exploration Notes A TIR survey of the Raft River geothermal area prospect in Idaho where thermal waters move laterally in an alluvial plain and have no visible surface manifestations was undertaken as part of geothermal exploration. References K. Watson (1974) Geothermal Reconnaissance From Quantitative Analysis Of Thermal Infrared Imagery

170

CONTAMINATION OF BROADBAND PHOTOMETRY BY NEBULAR EMISSION IN HIGH-REDSHIFT GALAXIES: INVESTIGATIONS WITH KECK'S MOSFIRE NEAR-INFRARED SPECTROGRAPH  

SciTech Connect (OSTI)

Earlier work has raised the potential importance of nebular emission in the derivation of the physical characteristics of high-redshift Lyman break galaxies. Within certain redshift ranges, and especially at z ? 6-7, such lines may be strong enough to reduce estimates of the stellar masses and ages of galaxies compared with those derived assuming the broadband photometry represents stellar light alone. To test this hypothesis at the highest redshifts where such lines can be probed with ground-based facilities, we examine the near-infrared spectra of a representative sample of 28 3.0 < z < 3.8 Lyman break galaxies using the newly commissioned MOSFIRE near-infrared spectrograph at the Keck I telescope. We use these data to derive the rest-frame equivalent widths (EWs) of [O III] emission and show that these are comparable with estimates derived using the spectral energy distribution (SED) fitting technique introduced for sources of known redshift by Stark et al. Although our current sample is modest, its [O III] EW distribution is consistent with that inferred for H? based on SED fitting of Stark et al.'s larger sample of 3.8 < z < 5 galaxies. For a subset of survey galaxies, we use the combination of optical and near-infrared spectroscopy to quantify kinematics of outflows in z ? 3.5 star-forming galaxies and discuss the implications for reionization measurements. The trends we uncover underline the dangers of relying purely on broadband photometry to estimate the physical properties of high-redshift galaxies and emphasize the important role of diagnostic spectroscopy.

Schenker, Matthew A; Ellis, Richard S; Konidaris, Nick P [Department of Astrophysics, California Institute of Technology, MC 249-17, Pasadena, CA 91125 (United States); Stark, Daniel P, E-mail: schenker@astro.caltech.edu [Department of Astronomy and Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States)

2013-11-01T23:59:59.000Z

171

Near-infrared polarimetry as a tool for testing properties of accreting super-massive black holes  

E-Print Network [OSTI]

Several massive black holes exhibit flux variability on time scales that correspond to source sizes of the order of few Schwarzschild radii. We survey the potential of near-infrared and X-ray polarimetry to constrain physical properties of such black hole systems, namely their spin and inclination. We have focused on a model where an orbiting hot spot is embedded in an accretion disk. A new method of searching for the time-lag between orthogonal polarization channels is developed and applied to an ensemble of hot spot models that samples a wide range of parameter space. We found that the hot spot model predicts signatures in polarized light which are in the range to be measured directly in the near future. However, our estimations are predicted upon the assumption of a Keplerian velocity distribution inside the flow where the dominant part of the magnetic field is toroidal. We also found that if the right model of the accretion flow can be chosen for each source (e.g. on the basis of magnetohydrodynamics simulations) then the black hole spin and inclination can be constrained to a small two-dimensional area in the spin-inclination space. The results of the application of the method to the available near-infrared polarimetric data of Sagittarius A* (Sgr A*) is presented. It is shown that even with the currently available data the spin and inclination of Sgr A* can be constrained. Next generations of near-infrared and X-ray polarimeters should be able to exploit this tool.

M. Zamaninasab; A. Eckart; M. Dovciak; V. Karas; R. Schoedel; G. Witzel; N. Sabha; M. Garcia-Marin; D. Kunneriath; K. Muzic; C. Straubmeier; M. Valencia-S; J. A. Zensus

2011-02-03T23:59:59.000Z

172

THE NEAR-INFRARED BACKGROUND INTENSITY AND ANISOTROPIES DURING THE EPOCH OF REIONIZATION  

SciTech Connect (OSTI)

A fraction of the extragalactic near-infrared (near-IR) background light involves redshifted photons from the ultraviolet (UV) emission from galaxies present during reionization at redshifts above 6. The absolute intensity and the anisotropies of the near-IR background provide an observational probe of the first-light galaxies and their spatial distribution. We estimate the extragalactic background light intensity during reionization by accounting for the stellar and nebular emission from first-light galaxies. We require the UV photon density from these galaxies to generate a reionization history that is consistent with the optical depth to electron scattering from cosmic microwave background measurements. We also require the bright-end luminosity function (LF) of galaxies in our models to reproduce the measured Lyman-dropout LFs at redshifts of 6-8. The absolute intensity is about 0.1-0.4 nW m{sup -2} sr{sup -1} at the peak of its spectrum at {approx}1.1 {mu}m. We also discuss the anisotropy power spectrum of the near-IR background using a halo model to describe the galaxy distribution. We compare our predictions for the anisotropy power spectrum to existing measurements from deep near-IR imaging data from Spitzer/IRAC, Hubble/NICMOS, and AKARI. The predicted rms fluctuations at tens of arcminute angular scales are roughly an order of magnitude smaller than the existing measurements. While strong arguments have been made that the measured fluctuations do not have an origin involving faint low-redshift galaxies, we find that measurements in the literature are also incompatible with galaxies present during the era of reionization. The measured near-IR background anisotropies remain unexplained with an unknown origin.

Cooray, Asantha; Gong Yan; Smidt, Joseph [Department of Physics and Astronomy, University of California, Irvine, CA 92697 (United States); Santos, Mario G. [CENTRA, Instituto Superior Tecnico, Technical University of Lisbon, Lisboa 1049-001 (Portugal)

2012-09-01T23:59:59.000Z

173

Carbon nanotubes as multifunctional biological transporters and near-infrared agents for selective cancer cell destruction  

E-Print Network [OSTI]

Biological systems are known to be highly transparent to 700-1100nm near-infrared (NIR) light. It is shown here that the strong optical absorbance of single-walled carbon nanotubes (SWNTs) in this special spectral window, an intrinsic property of SWNTs, can be utilized for optical stimulation of nanotubes inside living cells to afford multifunctional nanotube biological transporters. For oligonucleotides transported inside living cells by nanotubes, the oligos can translocate into cell nucleus upon endosomal rupture triggered by NIR laser pulses. Continuous NIR radiation can cause cell death due to excessive local heating of SWNT in vitro. Selective cancer cell destruction can be achieved via functionalization of SWNT with a folate moiety, selective internalization of SWNTs inside cells labeled with folate receptor tumor-markers and NIR triggered cell death, without harming receptor-free normal cells. Thus, the transporting capabilities of carbon nanotubes combined with suitable functionalization chemistry and their intrinsic optical properties can lead to new classes of novel nanomaterials for drug delivery and cancer therapy.

Nadine Wong Shi Kam; Michael O'Connell; Jeffrey A. Wisdom; Hongjie Dai

2005-08-16T23:59:59.000Z

174

Spontaneous tunneling and near-infrared-induced interconversion between the amino-hydroxy conformers of cytosine  

SciTech Connect (OSTI)

Spontaneous and near-infrared/infrared (NIR/IR)-induced interconversions between two amino-hydroxy conformers of monomeric cytosine have been investigated for the compound isolated in a low-temperature argon matrix. Combined use of a laser source (which provides narrowband NIR radiation) and a broadband NIR/IR source of excitation light allowed a detailed investigation of mutual conversions of the two conformers in question. The experiments carried out within the current work demonstrated that upon broadband NIR/IR irradiation (with the IR source of FTIR spectrometer) the population ratio of the two amino-hydroxy conformers changes towards a ratio corresponding to a photostationary state. Evolution of the conformer population ratio towards the photostationary ratio occurred independent of the initial ratio of conformers, which could be prepared by a population shift (in favor of one of the forms) induced by narrowband NIR excitation. Moreover, spontaneous tunneling conversion of the higher-energy conformer into a lower-energy form was observed for cytosine isolated in a low-temperature argon matrix kept in the dark. This process is slow and occurs on a time scale of days. The tunneling process, studied for matrix-isolated cytosine, clearly follows a dispersive type of kinetics rather than the classical monoexponential kinetics.

Reva, Igor; Fausto, Rui [Department of Chemistry, University of Coimbra, 3004-535 Coimbra (Portugal); Nowak, Maciej J.; Lapinski, Leszek [Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw (Poland)

2012-02-14T23:59:59.000Z

175

First Detection of Near-Infrared Intraday Variations in the Seyfert 1 Nucleus NGC4395  

E-Print Network [OSTI]

We carried out a one-night optical V and near-infrared JHK monitoring observation of the least luminous Seyfert 1 galaxy, NGC4395, on 2004 May 1, and detected for the first time the intraday flux variations in the J and H bands, while such variation was not clearly seen for the K band. The detected J and H variations are synchronized with the flux variation in the V band, which indicates that the intraday-variable component of near-infrared continuum emission of the NGC4395 nucleus is an extension of power-law continuum emission to the near-infrared and originates in an outer region of the central accretion disk. On the other hand, from our regular program of long-term optical BVI and near-infrared JHK monitoring observation of NGC4395 from 2004 February 12 until 2005 January 22, we found large flux variations in all the bands on time scales of days to months. The optical BVI variations are almost synchronized with each other, but not completely with the near-infrared JHK variations. The color temperature of the near-infrared variable component is estimated to be T=1320-1710 K, in agreement with thermal emission from hot dust tori in active galactic nuclei (AGNs). We therefore conclude that the near-infrared variation consists of two components having different time scales, so that a small K-flux variation on a time scale of a few hours would possibly be veiled by large variation of thermal dust emission on a time scale of days.

T. Minezaki; Y. Yoshii; Y. Kobayashi; K. Enya; M. Suganuma; H. Tomita; S. Koshida; M. Yamauchi; T. Aoki

2006-04-08T23:59:59.000Z

176

NEAR-INFRARED DETECTION OF A SUPER-THIN DISK IN NGC 891  

SciTech Connect (OSTI)

We probe the disk structure of the nearby, massive, edge-on spiral galaxy NGC 891 with subarcsecond resolution JHK{sub s}-band images covering {approx} {+-}10 kpc in radius and {+-}5 kpc in height. We measure intrinsic surface brightness (SB) profiles using realistic attenuation corrections constrained from near- and mid-infrared (Spitzer) color maps and three-dimensional Monte Carlo radiative-transfer models. In addition to the well-known thin and thick disks, a super-thin disk with 60-80 pc scale-height-comparable to the star-forming disk of the Milky Way-is visibly evident and required to fit the attenuation-corrected light distribution. Asymmetries in the super-thin disk light profile are indicative of young, hot stars producing regions of excess luminosity and bluer (attenuation-corrected) near-infrared color. To fit the inner regions of NGC 891, these disks must be truncated within {approx}3 kpc, with almost all their luminosity redistributed in a bar-like structure 50% thicker than the thin disk. There appears to be no classical bulge but rather a nuclear continuation of the super-thin disk. The super-thin, thin, thick, and bar components contribute roughly 30%, 42%, 13%, and 15% (respectively) to the total K{sub s}-band luminosity. Disk axial ratios (length/height) decrease from 30 to 3 from super-thin to thick components. Both exponential and sech{sup 2} vertical SB profiles fit the data equally well. We find that the super-thin disk is significantly brighter in the K{sub s}-band than typically assumed in integrated spectral energy distribution models of NGC 891: it appears that in these models the excess flux, likely produced by young stars in the super-thin disk, has been mistakenly attributed to the thin disk.

Schechtman-Rook, Andrew; Bershady, Matthew A., E-mail: andrew@astro.wisc.edu [Department of Astronomy, University of Wisconsin, 475 N. Charter Street, Madison, WI 53706 (United States)

2013-08-10T23:59:59.000Z

177

A matter of collection and detection for intraoperative and noninvasive near-infrared fluorescence molecular imaging: To see or not to see?  

SciTech Connect (OSTI)

Purpose: Although fluorescence molecular imaging is rapidly evolving as a new combinational drug/device technology platform for molecularly guided surgery and noninvasive imaging, there remains no performance standards for efficient translation of “first-in-humans” fluorescent imaging agents using these devices. Methods: The authors employed a stable, solid phantom designed to exaggerate the confounding effects of tissue light scattering and to mimic low concentrations (nM–pM) of near-infrared fluorescent dyes expected clinically for molecular imaging in order to evaluate and compare the commonly used charge coupled device (CCD) camera systems employed in preclinical studies and in human investigational studies. Results: The results show that intensified CCD systems offer greater contrast with larger signal-to-noise ratios in comparison to their unintensified CCD systems operated at clinically reasonable, subsecond acquisition times. Conclusions: Camera imaging performance could impact the success of future “first-in-humans” near-infrared fluorescence imaging agent studies.

Zhu, Banghe; Rasmussen, John C.; Sevick-Muraca, Eva M., E-mail: Eva.Sevick@uth.tmc.edu [Center for Molecular Imaging, The Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center, Houston, Texas 77030 (United States)

2014-02-15T23:59:59.000Z

178

IS THE LATE NEAR-INFRARED BUMP IN SHORT-HARD GRB 130603B DUE TO THE LI-PACZYNSKI KILONOVA?  

SciTech Connect (OSTI)

Short-hard gamma-ray bursts (GRBs) are widely believed to be produced by the merger of two binary compact objects, specifically by two neutron stars or by a neutron star orbiting a black hole. According to the Li-Paczynski kilonova model, the merger would launch sub-relativistic ejecta and a near-infrared/optical transient would then occur, lasting up to days, which is powered by the radioactive decay of heavy elements synthesized in the ejecta. The detection of a late bump using the Hubble Space Telescope (HST) in the near-infrared afterglow light curve of the short-hard GRB 130603B is indeed consistent with such a model. However, as shown in this Letter, the limited HST near-infrared light curve behavior can also be interpreted as the synchrotron radiation of the external shock driven by a wide mildly relativistic outflow. In such a scenario, the radio emission is expected to peak with a flux of ?100 ?Jy, which is detectable for current radio arrays. Hence, the radio afterglow data can provide complementary evidence on the nature of the bump in GRB 130603B. It is worth noting that good spectroscopy during the bump phase in short-hard bursts can test the validity of either model above, analogous to spectroscopy of broad-lined Type Ic supernova in long-soft GRBs.

Jin, Zhi-Ping; Fan, Yi-Zhong; Wei, Da-Ming [Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Science, Nanjing 210008 (China)] [Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Science, Nanjing 210008 (China); Xu, Dong [Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen (Denmark)] [Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen (Denmark); Wu, Xue-Feng, E-mail: yzfan@pmo.ac.cn [Chinese Center for Antarctic Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China)] [Chinese Center for Antarctic Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China)

2013-09-20T23:59:59.000Z

179

Thermal And-Or Near Infrared At Socorro Mountain Area (Owens, Et Al., 2005)  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Thermal And-Or Near Infrared At Socorro Mountain Area (Owens, Et Al., 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Socorro Mountain Area (Owens, Et Al., 2005) Exploration Activity Details Location Socorro Mountain Area Exploration Technique Thermal And-Or Near Infrared Activity Date Usefulness not indicated DOE-funding Unknown Notes IR remote sensing has located elevated surface temperatures (<12 degrees C above background) near Socorro Peak). A four-year compellation of ASTER satellite IR imaging was used. These images work on a 5-band, TIR processor

180

Thermal And-Or Near Infrared At Lester Meadow Area (Vice, 2010) | Open  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Thermal And-Or Near Infrared At Lester Meadow Area (Vice, 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Lester Meadow Area (Vice, 2010) Exploration Activity Details Location Lester Meadow Area Exploration Technique Thermal And-Or Near Infrared Activity Date Usefulness useful DOE-funding Unknown Notes The first TIR survey BN conducted was over the Lester Hot Springs area to see if it would help outline the area of geothermal activity. These studies found extensive thermal springs and a grassland area caused by the thermal

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

A subwavelength near-infrared negative index material Xuhuai Zhang, Marcelo Davano, Yaroslav Urzhumov, Gennady Shvets, and Stephen R. Forrest  

E-Print Network [OSTI]

A subwavelength near-infrared negative index material Xuhuai Zhang, Marcelo Davanço, Yaroslav://scitation.aip.org/termsconditions. Downloaded to IP: 129.116.140.116 On: Thu, 13 Mar 2014 15:08:47 #12;A subwavelength near-infrared negative.1063/1.3110957 Negative index materials NIMs 1,2 have recently been reported at near-infrared or higher optical

Texas at Austin, University of

182

Time-Resolved Measurements of Near-Infrared Pulse Induced Ultrafast Optical Modulation of Quantum Cascade Lasers  

Science Journals Connector (OSTI)

We temporally resolve ultrafast modulation of quantum cascade lasers (QCLs) using a near-infrared pump mid-infrared probe technique. We compare interband and intersubband transition...

Cai, Hong; Liu, Sheng; Lalanne, Elaine; Guo, Dingkai; Chen, Xing; Wang, Xiaojun; Choa, Fow-Sen; Johnson, Anthony M

183

Efficient near-infrared quantum cutting in NaYF4: Ho3+, Yb3+ for solar photovoltaics  

Science Journals Connector (OSTI)

Quantum cutting converting a ultraviolet photon into two near-infrared photons has been demonstrated by spectroscopic measurements in NaYF4:Ho3+,Yb3+...

Deng, Kaimo; Gong, Tao; Hu, Lingxun; Wei, Xiantao; Chen, Yonghu; Yin, Min

2011-01-01T23:59:59.000Z

184

Near-Infrared Spectroscopic Monitoring of the Water Adsorption/Desorption Process in Modern and Archaeological Wood  

Science Journals Connector (OSTI)

We investigated the adsorption/desorption mechanism of water and the variation of water adsorption for modern and archaeological wood using near-infrared spectroscopy. A mixture...

Inagaki, Tetsuya; Yonenobu, Hitoshi; Tsuchikawa, Satoru

2008-01-01T23:59:59.000Z

185

NEAR-INFRARED CIRCULAR POLARIZATION IMAGES OF NGC 6334-V  

SciTech Connect (OSTI)

We present results from deep imaging linear and circular polarimetry of the massive star-forming region NGC 6334-V. These observations show high degrees of circular polarization (CP), as much as 22% in the K{sub s} band, in the infrared nebula associated with the outflow. The CP has an asymmetric positive/negative pattern and is very extended ({approx}80'' or 0.65 pc). Both the high CP and its extended size are larger than those seen in the Orion CP region. Three-dimensional Monte Carlo light-scattering models are used to show that the high CP may be produced by scattering from the infrared nebula followed by dichroic extinction by an optically thick foreground cloud containing aligned dust grains. Our results show not only the magnetic field orientation of around young stellar objects, but also the structure of circumstellar matter such as outflow regions and their parent molecular cloud along the line of sight. The detection of the large and extended CP in this source and the Orion nebula may imply the CP origin of the biological homochirality on Earth.

Kwon, Jungmi; Tamura, Motohide; Hashimoto, Jun; Kusakabe, Nobuhiko; Kandori, Ryo [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Lucas, Phil W.; Hough, James H. [Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield AL10 9AB (United Kingdom); Nakajima, Yasushi [Center of Information and Communication Technology, Hitotsubashi University, 2-1 Naka, Kunitachi, Tokyo 186-8601 (Japan); Nagayama, Takahiro [Department of Astrophysics, Nagoya University, Nagoya 464-8602 (Japan); Nagata, Tetsuya, E-mail: jungmi.kwon@nao.ac.jp [Department of Astronomy, Kyoto University, Kyoto 606-8502 (Japan)

2013-03-01T23:59:59.000Z

186

Determination of enantiomeric compositions of pharmaceutical products by near-infrared spectrometry  

E-Print Network [OSTI]

surprising that the pharmaceutical industry needs effective methods to determine the enantiomeric purityDetermination of enantiomeric compositions of pharmaceutical products by near-infrared spectrometry of chiral effects, the FAA in 1992 issued a mandate requiring pharmaceutical companies to evaluate

Reid, Scott A.

187

Electro-optic coefficients of lithium tantalate at near-infrared wavelengths  

E-Print Network [OSTI]

Electro-optic coefficients of lithium tantalate at near-infrared wavelengths Joanna L. Casson April 27, 2004 The unclamped linear electro-optic coefficients r13 and r33 for lithium tantalate. In the unclamped mode the effects of mechanical changes caused by piezoelectric and elasto-optic effects

Gopalan, Venkatraman

188

DeMeo taxonomy : categorization of asteroids in the near-infrared  

E-Print Network [OSTI]

This work presents the DeMeo taxonomy, an asteroid taxonomy with 24 classes based on Principal Component Analysis of spectral data over the visible and near-infrared wavelengths, specifically the 0.45 to 2.45 micron range. ...

DeMeo, Francesca E

2007-01-01T23:59:59.000Z

189

Tracking Language Tuning across the First Year of Life using Near-infrared Spectroscopy  

E-Print Network [OSTI]

near-infrared spectroscopy (NIRS). Specifically, we used NIRS to examine changes in hemodynamic activity in monolingually-exposed infants between the ages of 3 and 14 months while they were exposed to native (English) and non-native (Spanish) speech...

Fava, Eswen Elizabeth

2012-02-14T23:59:59.000Z

190

High-power parametric conversion from near-infrared to short-wave infrared  

E-Print Network [OSTI]

High-power parametric conversion from near-infrared to short-wave infrared Adrien Billat,1,* Steevy.billat@epfl.ch Abstract: We report the design of an all-fiber continuous wave Short-Wave Infrared source capable to output.4370) Nonlinear optics, fibers; (140.3070) Infrared and far-infrared lasers. References and links 1. M. N

Dalang, Robert C.

191

Simulating Wide-Field Quasar Surveys from the Optical to Near-Infrared  

E-Print Network [OSTI]

A number of deep, wide-field, near-infrared surveys employing new infrared cameras on 4m-class telescopes are about to commence. These surveys have the potential to determine the fraction of luminous dust-obscured quasars that may have eluded surveys undertaken at optical wavelengths. In order to understand the new observations it is essential to make accurate predictions of surface densities and number-redshift relations for unobscured quasars in the near-infrared based on information from surveys at shorter wavelengths. The accuracy of the predictions depends critically on a number of key components. The commonly used single power-law representation for quasar SEDs is inadequate and the use of an SED incorporating the upturn in continuum flux at lambda~12000 A is essential. The presence of quasar host galaxies is particularly important over the restframe wavelength interval 8000 near-infrared surveys. Even adopting a conservative model for the behaviour of host galaxy luminosity the number counts for shallow surveys in the K-band increase by a factor of two. The degree of morphological selection applied to define candidate quasar samples in the near-infrared is found to be an important factor in determining the fraction of the quasar population included in such samples.

Natasha Maddox; Paul C. Hewett

2005-12-13T23:59:59.000Z

192

A WEAK-LENSING AND NEAR-INFRARED STUDY OF A3192: DISASSEMBLING A RICHNESS CLASS 3 ABELL CLUSTER  

SciTech Connect (OSTI)

We present a joint gravitational lensing and near-infrared study of the galaxy cluster Abell 3192 (A3192) that has been associated both with galaxies at z = 0.168 and with the X-ray luminous cluster RXC J0358.8-2955 (RXC J0358) at z = 0.425. Weak-lensing analysis of our Hubble Space Telescope snapshot observation with the Advanced Camera for Surveys detects two mass over-densities separated by {approx}2 arcmin, one adjacent to the optical position of A3192 (4.4{sigma} significance) and the other adjacent to the X-ray position of RXC J0358 (6.2{sigma} significance). These mass peaks coincide with peaks in the K-band luminosity density of galaxies with near-infrared colors consistent with the red sequence at z = 0.168 and z 0.425, respectively. Moreover, the Bayesian evidence of parameterized mass models that include two cluster/group-scale halos centered on the respective mass peaks exceeds that of single-halo models by a factor of {>=}10. The total projected mass of each galaxy system within 250 kpc of the respective peaks is M{sub WL}(z = 0.168) {approx_equal} 3 Multiplication-Sign 10{sup 13} M{sub Sun} and M{sub WL}(z = 0.425) {approx_equal} 1.2 Multiplication-Sign 10{sup 14} M{sub Sun }, both with total mass-to-light ratios of M{sub WL}/L{sub K} {approx_equal} 20 M{sub Sun }/L{sub Sun }. The original Abell cluster therefore comprises two independent galaxy systems-a foreground group at z = 0.168 and RXC J0358 at z = 0.425. Our results demonstrate the power of combining X-ray, near-infrared, and weak-lensing observations to select massive clusters, place those clusters and interloper galaxy systems along the line of sight, and measure their masses. This combination will be invaluable to robust interpretation of future high-redshift cluster surveys, including eROSITA.

Hamilton-Morris, Victoria; Smith, Graham P.; Haines, C. P.; Sanderson, A. J. R. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom); Edge, A. C. [Institute of Computational Cosmology, Durham University, South Road, Durham DH1 3LE (United Kingdom); Egami, E. [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Marshall, P. J. [Sub-department of Astrophysics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH (United Kingdom); Targett, T. A., E-mail: vhh@star.sr.bham.ac.uk, E-mail: gps@star.sr.bham.ac.uk [SUPA, Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ (United Kingdom)

2012-04-01T23:59:59.000Z

193

Synthesis and characterization of a novel kind of near-infrared electrochromic polymers containing an anthraquinone imide group  

E-Print Network [OSTI]

Synthesis and characterization of a novel kind of near-infrared electrochromic polymers containing October 2009 DOI: 10.1039/b915978a A novel near-infrared (NIR) electrochromic polyelectrolyte consisting the processability of the polymer as well as the monomer conversion. The electrochemical and electrochromic

Wan, Xin-hua

194

One and two photon optogalvanic spectroscopy of argon and neon for the wavelength calibration in the near infrared  

E-Print Network [OSTI]

in the near infrared Zhen Tang *, Richard B. Miles Department of Mechanical and Aerospace Engineering The one photon and two photon optogalvanic spectra of argon and neon have been investigated in the near infrared region between 735 and 781 nm. About 35 transitions have been recorded by illuminating a hollow

Miles, Richard

195

JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 31, NO. 19, OCTOBER 1, 2013 3181 Noise Figure in Near-Infrared Amorphous and  

E-Print Network [OSTI]

JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 31, NO. 19, OCTOBER 1, 2013 3181 Noise Figure in Near-Infrared, Senior Member, IEEE Abstract--The noise figures (NF) of near-infrared (near-IR) amorphous silicon (a Amorphous and Mid-Infrared Crystalline Silicon Optical Parametric Amplifiers Jichi Ma and Sasan Fathpour

Fathpour, Sasan

196

THE CARNEGIE SUPERNOVA PROJECT: FIRST NEAR-INFRARED HUBBLE DIAGRAM TO z approx 0.7  

SciTech Connect (OSTI)

The Carnegie Supernova Project (CSP) is designed to measure the luminosity distance for Type Ia supernovae (SNe Ia) as a function of redshift, and to set observational constraints on the dark energy contribution to the total energy content of the universe. The CSP differs from other projects to date in its goal of providing an I-band rest-frame Hubble diagram. Here, we present the first results from near-infrared observations obtained using the Magellan Baade telescope for SNe Ia with 0.1 light curves and an I-band Hubble diagram for this first sample of 35 SNe Ia, and we compare these data to 21 new SNe Ia at low redshift. These data support the conclusion that the expansion of the universe is accelerating. When combined with independent results from baryon acoustic oscillations, these data yield OMEGA {sub m} = 0.27 +- 0.02(statistical) and OMEGA{sub DE} = 0.76 +- 0.13(statistical) +- 0.09(systematic), for the matter and dark energy densities, respectively. If we parameterize the data in terms of an equation of state, w (with no time dependence), assume a flat geometry, and combine with baryon acoustic oscillations, we find that w = -1.05 +- 0.13(statistical) +- 0.09(systematic). The largest source of systematic uncertainty on w arises from uncertainties in the photometric calibration, signaling the importance of securing more accurate photometric calibrations for future supernova cosmology programs. Finally, we conclude that either the dust affecting the luminosities of SNe Ia has a different extinction law (R{sub V} = 1.8) than that in the Milky Way (where R{sub V} = 3.1), or that there is an additional intrinsic color term with luminosity for SNe Ia, independent of the decline rate. Understanding and disentangling these effects is critical for minimizing the systematic uncertainties in future SN Ia cosmology studies.

Freedman, Wendy L.; Burns, Christopher R.; Wyatt, Pamela; Persson, S. E.; Madore, Barry F.; Kelson, Daniel D.; Murphy, D. C.; Sturch, Laura [Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Phillips, M. M.; Contreras, Carlos; Folatelli, Gaston; Gonzalez, E. Sergio; Morrell, Nidia; Roth, Miguel; Stritzinger, Maximilian [Carnegie Institution of Washington, Las Campanas Observatory, Colina El Pino, Casilla 601 (Chile); Hamuy, Mario [Universidad de Chile, Departmento de Astronomia, Casilla 36-D, Santiago (Chile); Hsiao, Eric [Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, Stn CSC, Victoria, BC V8W 3P6 (Canada); Suntzeff, Nick B. [Physics Department, Texas A and M University, College Station, TX 77843 (United States); Astier, P.; Balland, C. [LPNHE, CNRS-IN2P3 and Universites Paris VI and VII, 4 place Jussieu, 75252 Paris Cedex 05 (France)

2009-10-20T23:59:59.000Z

197

A DISK-WIND MODEL FOR THE NEAR-INFRARED EXCESS EMISSION IN PROTOSTARS  

SciTech Connect (OSTI)

Protostellar systems, ranging from low-luminosity classical T Tauri and Herbig Ae stars to high-luminosity Herbig Be stars, exhibit a near-infrared (NIR) excess in their spectra that is dominated by a bump in the monochromatic luminosity with a peak near 3 {mu}m. The bump can be approximated by a thermal emission component of temperature {approx}1500 K that is of the order of the sublimation temperature of interstellar dust grains. In the currently popular 'puffed-up rim' scenario, the bump represents stellar radiation that propagates through the optically thin inner region of the surrounding accretion disk and is absorbed and reemitted by the dust that resides just beyond the dust sublimation radius r {sub sub}. However, this model cannot account for the strongest bumps measured in these sources, and it predicts a pronounced secondary bounce in the interferometric visibility curve that is not observed. In this paper we present an alternative interpretation, which attributes the bump to reemission of stellar radiation by dust that is uplifted from the disk by a centrifugally driven wind. Winds of this type are a leading candidate for the origin of the strong outflows associated with protostars, and there is observational evidence for disk winds originating on scales {approx}r {sub sub}. Using a newly constructed Monte Carlo radiative transfer code and focusing on low-luminosity sources, we show that this model can account for the NIR excess emission even in bright Herbig Ae stars such as AB Auriga and MWC 275, and that it successfully reproduces the basic features of the visibilities measured in these protostars. We argue that a robust dusty outflow in these sources could be self-limiting-through shielding of the stellar FUV photons-to a relatively narrow launching region between r {sub sub} and {approx}2 r {sub sub}. We also suggest that the NIR and scattered-light variability exhibited by a source like MWC 275 can be attributed in this picture to the uplifting of dust clouds from the disk.

Bans, Alissa; Koenigl, Arieh, E-mail: abans@uchicago.edu, E-mail: akonigl@uchicago.edu [Department of Astronomy and Astrophysics and Enrico Fermi Institute, University of Chicago, Chicago, IL 60637 (United States)

2012-10-20T23:59:59.000Z

198

Abstract 4138: Fluorescence laparoscopy with an LED light source enables fluorescence-guided resection of pancreatic cancer, labeled with fluorophore-conjugated antibodies, in mouse models.  

Science Journals Connector (OSTI)

...4138: Fluorescence laparoscopy with an LED light source enables fluorescence-guided...495-nm emission filter and a Stryker L9000 LED light source 24 hours after tail vein injection...Bouvet. Fluorescence laparoscopy with an LED light source enables fluorescence-guided...

Cristina A. Metildi; Sharmeela Kaushal; George A. Luiken; Mark A. Talamini; Robert M. Hoffman; Michael Bouvet

2013-04-15T23:59:59.000Z

199

Thermal And-Or Near Infrared At Railroad Valley Area (Laney, 2005) | Open  

Open Energy Info (EERE)

Railroad Valley Area (Laney, 2005) Railroad Valley Area (Laney, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Railroad Valley Area (Laney, 2005) Exploration Activity Details Location Railroad Valley Area Exploration Technique Thermal And-Or Near Infrared Activity Date Usefulness useful DOE-funding Unknown Notes Geology and Geophysics of Geothermal Systems, Gregory Nash, 2005. Objectives for FY 2004 were to map mineralogy in Dixie Meadows, NV and thermal anomalies in Railroad Valley, NV. The first objective relates to the project goal of testing hyperspectral imagery for applications in soil-mineralogy mapping to detect hidden faults and buried geothermal phenomena. The second objective relates to testing satellite thermal

200

Thermal And-Or Near Infrared At Coso Geothermal Area (2007) | Open Energy  

Open Energy Info (EERE)

2007) 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Coso Geothermal Area (2007) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Thermal And-Or Near Infrared Activity Date 2007 Usefulness not indicated DOE-funding Unknown Exploration Basis Analyze if coupling remote sensing and field data is effective for determining geothermal areas Notes Thermal infrared (TIR) data from the spaceborne ASTER instrument was used to detect surface temperature anomalies in the Coso geothermal field in eastern California. The identification of such anomalies in a known geothermal area serves as an incentive to apply similar markers and techniques to areas of unknown geothermal potential. Field measurements

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Cloud Properties Derived from Visible and Near-infrared Reflectance in the  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Cloud Properties Derived from Visible and Near-infrared Reflectance in the Cloud Properties Derived from Visible and Near-infrared Reflectance in the Presence of Aerosols Hofmann, Odele University of Colorado at Boulder Pilewskie, Peter University of Colorado Gore, Warren NASA Ames Research Center Russell, Phil NASA Ames Research Center Livingston, John SRI International Redemann, Jens BAERI/NASA Ames Research Center Bergstrom, Robert Bay Area Environmental Research Institute Platnick, Steven NASA-GSFC Daniel, John NOAA Aeronomy Laboratory Category: Cloud Properties The New England Air Quality Study - Intercontinental Transport and Chemical Transformation (NEAQS-ITCT) experiment conducted in July-August 2004 included objectives on the effects of urban-industrial pollution aerosols on cloud radiative properties, the so-called indirect effect. Measurements

202

Sub-Arcsecond Near-Infrared Images of Massive Star Formation Region NGC 6334 V  

E-Print Network [OSTI]

We present high spatial resolution (0$\\farcs$3) polarimetric images in the $H$ and $K$ bands and direct images in the $L'$ and $M'$ bands of the NGC 6334 V infrared nebulae. The images show complex structures including the multi-shells and various knots in the nebulae. The appearances and colors of the eastern and western nebulae differ considerably. Our polarization images also show differences between the illuminating sources of the nebulae: the eastern nebula is illuminated by a deeply embedded mid-infrared source, KDJ 4, and the western nebula by our newly detected near-infrared source, WN-A1. The degree of polarization of the nebulae is very large, up to 70% at $K$ and 60% at $H$, which is consistent with a single scattering of near-infrared radiation from each source at the walls of the mass outflows.

Jun Hashimoto; Motohide Tamura; Hiroshi Suto; Lyu Abe; Miki Ishii; Tomoyuki Kudo; Satoshi Mayama

2006-12-19T23:59:59.000Z

203

Thermal And-Or Near Infrared At Raft River Geothermal Area (1997) | Open  

Open Energy Info (EERE)

Raft River Geothermal Area (1997) Raft River Geothermal Area (1997) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal And-Or Near Infrared At Raft River Geothermal Area (1997) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Thermal And-Or Near Infrared Activity Date 1997 Usefulness not indicated DOE-funding Unknown Exploration Basis Locate geothermal surface manifestations Notes Several examples of the use of TIR to locate geothermal surface manifestations and notes that TIR is more useful in remote areas. The analysis of three TIR images acquired during a diurnal cycle at Raft River is presented. The purpose of these images was to minimize the masking of temperature variations by vegetation and topography. References

204

A NEAR-INFRARED SPECTROSCOPIC SURVEY OF COOL WHITE DWARFS IN THE SLOAN DIGITAL SKY SURVEY  

SciTech Connect (OSTI)

We present near-infrared photometric observations of 15 and spectroscopic observations of 38 cool white dwarfs (WDs). This is the largest near-infrared spectroscopic survey of cool WDs to date. Combining the Sloan Digital Sky Survey photometry and our near-infrared data, we perform a detailed model atmosphere analysis. The spectral energy distributions of our objects are explained fairly well by model atmospheres with temperatures ranging from 6300 K down to 4200 K. Two WDs show significant absorption in the infrared, and are best explained with mixed H/He atmosphere models. Based on the up-to-date model atmosphere calculations by Kowalski and Saumon, we find that the majority of the stars in our sample have hydrogen-rich atmospheres. We do not find any pure helium atmosphere WDs below 5000 K, and we find a trend of increasing hydrogen to helium ratio with decreasing temperature. These findings present an important challenge to understanding the spectral evolution of WDs.

Kilic, Mukremin [Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States); Kowalski, Piotr M. [Lehrstuhl fuer Theoretische Chemie, Ruhr-Universitaet Bochum, 44780 Bochum (Germany); Von Hippel, Ted [Physics Department, Siena College, 515 Loudon Road, Loudonville, NY 12211 (United States)], E-mail: mkilic@cfa.harvard.edu

2009-07-15T23:59:59.000Z

205

Follow-Up Near-infrared Spectroscopy of Ultraluminous Infrared Galaxies observed by ISO  

E-Print Network [OSTI]

We present low resolution near-infrared spectroscopy of an unbiased sample of 24 ultraluminous infrared galaxies (ULIRGs), selected from samples previously observed spectroscopically in the mid-infrared with the Infrared Space Observatory (ISO). Qualitatively, the near-infrared spectra resemble those of starbursts. Only in one ULIRG, IRAS 04114-5117E, do we find spectroscopic evidence for AGN activity. The spectroscopic classification in the near-infrared is in very good agreement with the mid-infrared one. For a subset of our sample for which extinction corrections can be derived from Pa-alpha and Br-gamma, we find rather high Pa-alpha luminosities, in accordance with the powering source of these galaxies being star formation.[Fe] emission is strong in ULIRGs and may be linked to starburst and superwind activity. Additionally, our sample includes two unusual objects. The first, IRAS F00183-7111, exhibits extreme [Fe] emission and the second, IRAS F23578-5307, is according to our knowledge one of the most luminous infrared galaxies in H2 rotation-vibration emission.

H. Dannerbauer; D. Rigopoulou; D. Lutz; R. Genzel; E. Sturm; A. F. M. Moorwood

2005-08-17T23:59:59.000Z

206

Time-Resolved Near-Infrared Photometry of Extreme Kuiper Belt Object Haumea  

E-Print Network [OSTI]

We present time-resolved near-infrared (J and H) photometry of the extreme Kuiper belt object (136108) Haumea (formerly 2003 EL61) taken to further investigate rotational variability of this object. The new data show that the near-infrared peak-to-peak photometric range is similar to the value at visible wavelengths, \\Delta m_R = 0.30+/-0.02 mag. Detailed analysis of the new and previous data reveals subtle visible/near-infrared color variations across the surface of Haumea. The color variations are spatially correlated with a previously identified surface region, redder in B-R and darker than the mean surface. Our photometry indicates that the J-H colors of Haumea (J-H=-0.057+/-0.016 mag) and its brightest satellite Hi'iaka (J-H=-0.399+/-0.034 mag) are significantly (>9 sigma) different. The satellite Hi'iaka is unusually blue in J-H, consistent with strong 1.5 micron water-ice absorption. The phase coefficient of Haumea in the J-band is found to increase monotonically with wavelength in the range 0.4

Pedro Lacerda

2008-11-23T23:59:59.000Z

207

Comparing local vs. global visible and near-infrared (VisNIR) diffuse reflectance spectroscopy (DRS) calibrations for the prediction of soil clay, organic C  

E-Print Network [OSTI]

Comparing local vs. global visible and near-infrared (VisNIR) diffuse reflectance spectroscopy (DRS Elsevier B.V. All rights reserved. 1. Introduction Visible and near-infrared (VisNIR) diffuse reflectance

Lawrence, Rick L.

208

NEAR-INFRARED VARIABILITY IN YOUNG STARS IN CYGNUS OB7  

SciTech Connect (OSTI)

We present the first results from a 124 night J, H, K near-infrared monitoring campaign of the dark cloud L 1003 in Cygnus OB7, an active star-forming region. Using three seasons of UKIRT observations spanning 1.5 years, we obtained high-quality photometry on 9200 stars down to J = 17 mag, with photometric uncertainty better than 0.04 mag. On the basis of near-infrared excesses from disks, we identify 30 pre-main-sequence stars, including 24 which are newly discovered. We analyze those stars and find that the NIR excesses are significantly variable. All 9200 stars were monitored for photometric variability; among the field star population, {approx}160 exhibited near-infrared variability (1.7% of the sample). Of the 30 young stellar objects (YSOs), 28 of them (93%) are variable at a significant level. Of the 30 YSOs, twenty-five have near-infrared excess consistent with simple disk-plus-star classical T Tauri models. Nine of these (36%) drift in color space over the course of these observations and/or since Two Micron All Sky Survey observations such that they cross the boundary defining the NIR excess criteria; effectively, they have a transient near-infrared excess. Thus, time-series JHK observations can be used to obtain a more complete sample of disk-bearing stars than single-epoch JHK observations. About half of the YSOs have color-space variations parallel to either the classical T Tauri star locus or a hybrid track which includes the dust reddening trajectory. This indicates that the NIR variability in YSOs that possess accretion disks arises from a combination of variable extinction and changes in the inner accretion disk: either in accretion rate, central hole size, and/or the inclination of the inner disk. While some variability may be due to stellar rotation, the level of variability on the individual stars can exceed a magnitude. This is a strong empirical suggestion that protoplanetary disks are quite dynamic and exhibit more complex activity on short timescales than is attributable to rotation alone or captured in static disk models.

Rice, Thomas S. [Department of Astronomy, Harvard University, 60 Garden Street, Cambridge, MA 02138 (United States); Wolk, Scott J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Aspin, Colin [Institute for Astronomy, University of Hawaii at Manoa, 640 N Aohoku Pl, Hilo, HI 96720 (United States)

2012-08-10T23:59:59.000Z

209

NEAR-INFRARED SPECTRA OF MARTIAN PYROXENE SEPARATES: FIRST RESULTS FROM MARS SPECTROSCOPY CONSORTIUM. J. M. Sunshine (sunshinej@saic.com)1  

E-Print Network [OSTI]

NEAR-INFRARED SPECTRA OF MARTIAN PYROXENE SEPARATES: FIRST RESULTS FROM MARS SPECTROSCOPY of visible near-infrared (VNIR) spectra of pyroxene sepa- rates from ALH84001, LEW88516, Nakhla, and Za- gami descriptions. Visible/Near-Infrared Spectra: Bidirectional re- flectance spectra from 0.3 to 2.6 µm at 5 nm

Hiroi, Takahiro

210

Near-infrared peptide-coated quantum dots for small animal imaging Gopal Iyer, Jack J. Li, Fabien Pinaud, James M. Tsay, Laurent A. Bentolila, Xavier  

E-Print Network [OSTI]

Near-infrared peptide-coated quantum dots for small animal imaging Gopal Iyer, Jack J. Li, Fabien ABSTRACT We have synthesized high quality type-II CdTe/CdSe near infrared quantum dots using successive ion used a peptide coating technique on type-II and commercial near infrared quantum dots for delivery

Michalet, Xavier

211

Theory of terahertz/near-infrared optical mixing in quantum wells in strong magnetic fields Takeshi Inoshita, Junichiro Kono,* and Hiroyuki Sakaki  

E-Print Network [OSTI]

Theory of terahertz/near-infrared optical mixing in quantum wells in strong magnetic fields TakeshiAs quantum wells illuminated simultaneously by near-infrared and terahertz THz radiation in strong magnetic the sample is illuminated simul- taneously by THz frequency T) and near-infrared fre- quency N) radiation

Kono, Junichiro

212

THE LAS CAMPANAS INFRARED SURVEY. III. THE H-BAND IMAGING SURVEY AND THE NEAR-INFRARED AND OPTICAL PHOTOMETRIC CATALOGS  

E-Print Network [OSTI]

THE LAS CAMPANAS INFRARED SURVEY. III. THE H-BAND IMAGING SURVEY AND THE NEAR-INFRARED AND OPTICAL on broadband optical and near-infrared photometry, is designed to robustly identify a statistically significant-reduction techniques, and object identification procedures. We present sam- ple near-infrared and optical photometric

Goddard III, William A.

213

Getting simultaneous red and near-infrared band data from a single digital camera for plant monitoring applications: theoretical and practical study  

E-Print Network [OSTI]

Getting simultaneous red and near-infrared band data from a single digital camera for plant Abstract. Multispectral images, including red and near-infrared bands, have proved efficient for vegetation imaging devices. A methodology is proposed to obtain simultaneously the near-infrared and red bands from

Boyer, Edmond

214

A Near-Infrared Transient Absorption Study of the Excited-State Dynamics of the Carotenoid Spirilloxanthin in Solution and in the LH1 Complex of Rhodospirillum rubrum  

E-Print Network [OSTI]

A Near-Infrared Transient Absorption Study of the Excited-State Dynamics of the Carotenoid rubrum were studied by near-infrared ultrafast transient absorption spectroscopy. Global analysis), does not exhibit detectable spectral features in the near-infrared region. Introduction The excited

van Stokkum, Ivo

215

Near-Infrared Spectroscopic Determination of Acetate, Ammonium, Biomass, and Glycerol in an Industrial Escherichia coli Fermentation  

Science Journals Connector (OSTI)

By use of near-infrared (NIR) spectroscopy, simultaneous, multiple-con-stituent estimation of important bioprocess parameters can be obtained in a time frame (< 1 min assay) that...

Hall, Jeffrey W; McNeil, Brian; Rollins, Malcolm J; Draper, Indira; Thompson, Brad G; Macaloney, Graeme

1996-01-01T23:59:59.000Z

216

Hemodynamic responses in rat brain during transcranial direct current stimulation: a functional near-infrared spectroscopy study  

Science Journals Connector (OSTI)

In the present study, we monitored hemodynamic responses in rat brains during transcranial direct current stimulation (tDCS) using functional near-infrared spectroscopy (fNIRS). Seven...

Han, Chang-Hee; Song, Hyuna; Kang, Yong-Guk; Kim, Beop-Min; Im, Chang-Hwan

2014-01-01T23:59:59.000Z

217

Investigation of near-infrared spectroscopy for periodic in situ cell culture media determination of glucose and lactate  

E-Print Network [OSTI]

, biosensors must be developed that are capable of monitoring the cell culture processes non-invasively and continuously. Non-invasive determinations of glucose and lactate in cell culture media were investigated via near-infrared spectroscopy (NIR) across...

Lewis, Christopher Bryan

2012-06-07T23:59:59.000Z

218

A near infrared organic photodiode with gain at low bias voltage  

SciTech Connect (OSTI)

We demonstrate an organic photodiode with near infrared optical response out to about 1100 run with a gain of {approx}10 at 1000 run under 5V reverse bias. The diodes employ a soluble naphthalocyanine with a peak absorption coefficient of {approx}10{sup 5} cm{sup -1} at 1000 nm. In contrast to most organic photodiodes, no exciton dissociating material is used. At zero bias, the diodes are inefficient with an external quantum efficiency of {approx} 10{sup -2}. In reverse bias, large gain occurs and is linear with bias voltage above 4V. The observed gain is consistent with a photoconductive gain mechanism.

Campbell, Ian H [Los Alamos National Laboratory; Crone, Brian K [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

219

A Fast and Selective Near-Infrared Fluorescent Sensor for Multicolor Imaging of Biological Nitroxyl (HNO)  

Science Journals Connector (OSTI)

A Fast and Selective Near-Infrared Fluorescent Sensor for Multicolor Imaging of Biological Nitroxyl (HNO) ... Nitric oxide was passed through an Ascarite column and a 6 ft coil containing silica gel at ?78 °C to remove impurities and then collected and stored under nitrogen in a gas storage bulb. ... Treatment of these cells with 3 mM Angeli’s salt led to an increase in fluorescence in both the NIR channel and the green channel (Figure 6C,E,H). ...

Alexandra T. Wrobel; Timothy C. Johnstone; Alexandria Deliz Liang; Stephen J. Lippard; Pablo Rivera-Fuentes

2014-02-24T23:59:59.000Z

220

Indistinguishable near-infrared single photons from an individual organic molecule  

SciTech Connect (OSTI)

By using the zero-phonon line emission of an individual organic molecule, we realized a source of indistinguishable single photons in the near infrared. A Hong-Ou-Mandel interference experiment is performed and a two-photon coalescence probability higher than 50% at 2 K is obtained. The contribution of the temperature-dependent dephasing processes to the two-photon interference contrast is studied. We show that the molecule delivers nearly ideal indistinguishable single photons at the lowest temperatures when the dephasing is nearly lifetime limited. This source is used to generate postselected polarization-entangled photon pairs as a test bench for applications in quantum information.

Trebbia, Jean-Baptiste; Tamarat, Philippe; Lounis, Brahim [Centre de Physique Moleculaire Optique et Hertzienne, Universite de Bordeaux and CNRS, 351 cours de la Liberation, Talence F-33405 (France)

2010-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Cooperative effect of ultraviolet and near-infrared beams in laser-induced condensation  

SciTech Connect (OSTI)

We demonstrate the cooperative effect of near infrared (NIR) and ultraviolet (UV) beams on laser-induced condensation. Launching a UV laser after a NIR pulse yields up to a 5-fold increase in the production of nanoparticles (25–300 nm) as compared to a single NIR beam. This cooperative effect exceeds the sum of those from the individual beams and occurs for delays up to 1 ?s. We attribute it to the UV photolysis of ozone created by the NIR pulses. The resulting OH radicals oxidize NO{sub 2} and volatile organic compounds, producing condensable species.

Matthews, M.; Henin, S.; Pomel, F.; Kasparian, J.; Wolf, J.-P. [Université de Genève, GAP-Biophotonics, Chemin de Pinchat 22, 1211 Geneva 4 (Switzerland)] [Université de Genève, GAP-Biophotonics, Chemin de Pinchat 22, 1211 Geneva 4 (Switzerland); Théberge, F.; Daigle, J.-F. [Defence R and D Canada Valcartier, 2459 de la Bravoure Blvd., Quebec (Qc) G3J 1X5 (Canada)] [Defence R and D Canada Valcartier, 2459 de la Bravoure Blvd., Quebec (Qc) G3J 1X5 (Canada); Lassonde, P.; Kieffer, J.-C. [INRS-EMT, 1650 Lionel Boulet Blvd., Varennes, Quebec (Qc) J3X1S2 (Canada)] [INRS-EMT, 1650 Lionel Boulet Blvd., Varennes, Quebec (Qc) J3X1S2 (Canada)

2013-12-23T23:59:59.000Z

222

Room temperature triggered single-photon source in the near infrared  

E-Print Network [OSTI]

We report the realization of a solid-state triggered single-photon source with narrow emission in the near infrared at room temperature. It is based on the photoluminescence of a single nickel-nitrogen NE8 colour centre in a chemical vapour deposited diamond nanocrystal. Stable single-photon emission has been observed in the photoluminescence under both continuous-wave and pulsed excitations. The realization of this source represents a step forward in the application of diamond-based single-photon sources to Quantum Key Distribution (QKD) under practical operating conditions.

E. Wu; James Rabeau; Gérard Roger; François Treussart; Heping Zeng; Philippe Grangier; Steven Prawer; Jean-François Roch

2007-08-14T23:59:59.000Z

223

SDSS J131339.98+515128.3: A new GravitationallyLensed Quasar Selected Based on Near-infrared Excess  

SciTech Connect (OSTI)

We report the discovery of a new gravitationally lensed quasar, SDSS J131339.98+515128.3, at a redshift of 1:875 with an image separation of 1: 0024. The lensing galaxy is clearly detected in visible-light follow-up observations. We also identify three absorption-line doublets in the spectra of the lensed quasar images, from which we measure the lens redshift to be 0:194. Like several other known lenses, the lensed quasar images have different continuum slopes. This difference is probably the result of reddening and microlensing in the lensing galaxy. The lensed quasar was selected by correlating Sloan Digital Sky Survey (SDSS) spectroscopic quasars with Two Micron All Sky Survey (2MASS) sources and choosing quasars that show near-infrared (IR) excess. The near-IR excess can originate, for example, from the contribution of the lensing galaxy at near-IR wavelengths. We show that the near-IR excess technique is indeed an efficient method to identify lensed systems from a large sample of quasars.

Ofek, E.O.; Oguri, M.; Jackson, N.; Inada, N.; Kayo, I.

2007-09-28T23:59:59.000Z

224

Large Area Divertor Temperature Measurements Using A High-speed Camera With Near-infrared FiIters in NSTX  

SciTech Connect (OSTI)

Fast cameras already installed on the National Spherical Torus Experiment (NSTX) have be equipped with near-infrared (NIR) filters in order to measure the surface temperature in the lower divertor region. Such a system provides a unique combination of high speed (> 50 kHz) and wide fi eld-of-view (> 50% of the divertor). Benchtop calibrations demonstrated the system's ability to measure thermal emission down to 330 oC. There is also, however, signi cant plasma light background in NSTX. Without improvements in background reduction, the current system is incapable of measuring signals below the background equivalent temperature (600 - 700 oC). Thermal signatures have been detected in cases of extreme divertor heating. It is observed that the divertor can reach temperatures around 800 oC when high harmonic fast wave (HHFW) heating is used. These temperature profiles were fi t using a simple heat diffusion code, providing a measurement of the heat flux to the divertor. Comparisons to other infrared thermography systems on NSTX are made.

Lyons, B C; Zweben, S J; Gray, T K; Hosea, J; Kaita, R; Kugel, H W; Maqueda, R J; McLean, A G; Roquemore, A L; Soukhanovskii, V A

2011-04-05T23:59:59.000Z

225

Near-Infrared, Kilosecond Variability of the Wisps And Jet in the Crab Pulsar Wind Nebula  

SciTech Connect (OSTI)

We present a time-lapse sequence of 20 near-infrared (J- and K'-band) snapshots of the central 20'' x 20'' of the Crab pulsar wind nebula, taken at sub-arcsecond resolution with the Hokupa'a/QUIRC adaptive optics camera on the Gemini North Telescope, and sampled at intervals of 10 minutes and 24 hours. It is observed that the equatorial wisps and polar knots in the termination shock of the pulsar wind appear to fluctuate in brightness on kilosecond time-scales. Maximum flux variations of {+-}24 {+-} 4 and {+-}14 {+-} 4 per cent relative to the mean (in 1.2 ks) are measured for the wisps and knots respectively, with greatest statistical significance in J band where the nebula background is less prominent. The J and K' flux densities imply different near-infrared spectra for the nonthermal continuum emission from the wisps and outermost polar knot (''sprite''), giving F{sub {nu}} {proportional_to} {nu}{sup -0.56{+-}0.12} and F{sub {nu}} {proportional_to} {nu}{sup -0.21{+-}0.13} respectively. The data are compared with existing optical and UV photometry and applied to constrain theories of the variability of the wisps (relativistic ion-cyclotron instability) and knots (relativistic fire hose instability).

Melatos, Andrew; Scheltus, D.; /Melbourne U.; Whiting, M.T.; /New South Wales U.; Eikenberry, S.S.; /Florida U.; Romani, R.W.; /Stanford U., Phys. Dept.; Rigaut, F.; /Gemini; Spitkovsky, A.; /KIPAC, Menlo Park; Arons, J.; /UC, Berkeley, Astron. Dept.; Payne, D.J.B.; /Melbourne U.

2006-01-11T23:59:59.000Z

226

YSO search toward the boundary of the Central Molecular Zone with near-infrared polarimetry  

E-Print Network [OSTI]

We have carried out near-infrared polarimetry toward the boundary of the Central Molecular Zone, in the field of (-1.4 deg $\\lesssim l \\lesssim$ -0.3 deg and 1.0 deg $\\lesssim l \\lesssim$ 2.9 deg, $|b|\\lesssim$ 0.1 deg), using the near-infrared polarimetric camera SIRPOL on the 1.4 m Infrared Survey Facility telescope. We have selected 112 intrinsically polarized sources on the basis of the estimate of interstellar polarization on Stokes $Q/I-U/I$ planes. The selected sources are brighter than $K_S=14.5$ mag and have polarimetric uncertainty $\\delta Penergy distributions of young stellar objects when using the photometry in the archive of the Spitzer Space Telescope mid-infrared data. However, many sources have spectral energy distributions of normal stars suffering heavy interstellar extinction; these might be stars behind dark clouds. Due to the small number of distinctive polarized sources and candidates of young stellar objec...

Yoshikawa, Tatsuhito; Tamura, Motohide; Kwon, Jungmi; Nagata, Tetsuya

2014-01-01T23:59:59.000Z

227

Method for ultrafast optical deflection enabling optical recording via serrated or graded light illumination  

DOE Patents [OSTI]

In one general embodiment, a method for deflecting an optical signal input into a waveguide is provided. In operation, an optical input signal is propagated through a waveguide. Additionally, an optical control signal is applied to a mask positioned relative to the waveguide such that the application of the optical control signal to the mask is used to influence the optical input signal propagating in the waveguide. Furthermore, the deflected optical input signal output from the waveguide is detected in parallel on an array of detectors. In another general embodiment, a beam deflecting structure is provided for deflecting an optical signal input into a waveguide, the structure comprising at least one wave guiding layer for guiding an optical input signal and at least one masking layer including a pattern configured to influence characteristics of a material of the guiding layer when an optical control signal is passed through the masking layer in a direction of the guiding layer. In another general embodiment, a system is provided including a waveguide, an attenuating mask positioned on the waveguide, and an optical control source positioned to propagate pulsed laser light towards the attenuating mask and the waveguide such that a pattern of the attenuating mask is applied to the waveguide and material properties of at least a portion of the waveguide are influenced.

Heebner, John E. (Livermore, CA)

2009-09-08T23:59:59.000Z

228

THREE NEW GALACTIC CENTER X-RAY SOURCES IDENTIFIED WITH NEAR-INFRARED SPECTROSCOPY  

SciTech Connect (OSTI)

We have conducted a near-infrared spectroscopic survey of 47 candidate counterparts to X-ray sources discovered by the Chandra X-Ray Observatory near the Galactic center (GC). Though a significant number of these astrometric matches are likely to be spurious, we sought out spectral characteristics of active stars and interacting binaries, such as hot, massive spectral types or emission lines, in order to corroborate the X-ray activity and certify the authenticity of the match. We present three new spectroscopic identifications, including a Be high-mass X-ray binary (HMXB) or a ? Cassiopeiae (Cas) system, a symbiotic X-ray binary, and an O-type star of unknown luminosity class. The Be HMXB/? Cas system and the symbiotic X-ray binary are the first of their classes to be spectroscopically identified in the GC region.

DeWitt, Curtis [Department of Physics, University of California, Davis, CA 95616 (United States); Bandyopadhyay, Reba M.; Eikenberry, Stephen S.; Sarajedini, Ata [Department of Astronomy, University of Florida, 211 Bryant Space Center, P.O. Box 112055, Gainesville, FL 32611 (United States); Sellgren, Kris [Department of Astronomy, The Ohio State University, 140 West 18th Avenue, Columbus, OH 43210 (United States); Blum, Robert; Olsen, Knut [National Optical Astronomy Observatories, Tucson, AZ 85719 (United States); Bauer, Franz E., E-mail: curtis.n.dewitt@nasa.gov [Departamento de Astronomía y Astrofísica, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22 (Chile)

2013-11-01T23:59:59.000Z

229

Field #3 of the Palomar-Groningen Survey II. Near-infrared photometry of semiregular variables  

E-Print Network [OSTI]

Near-infrared photometry (JHKL'M) was obtained for 78 semiregular variables (SRVs) in field #3 of the Palomar-Groningen survey (PG3, l=0, b=-10). Together with a sample of Miras in this field a comparison is made with a sample of field SRVs and Miras. The PG3 SRVs form a sequence (period-luminosity & period-colour) with the PG3 Miras, in which the SRVs are the short period extension to the Miras. The field and PG3 Miras follow the same P/(J--K)o relation, while this is not the case for the field and PG3 SRVs. Both the PG3 SRVs and Miras follow the SgrI period-luminosity relation adopted from Glass et al. (1995, MNRAS 273, 383). They are likely pulsating in the fundamental mode and have metallicities spanning the range from intermediate to approximately solar.

M. Schultheis; Y. K. Ng; J. Hron; F. Kerschbaum

1998-07-30T23:59:59.000Z

230

Deep Near-Infrared Imaging and Photometry of the Antennae Galaxies with WIRC  

E-Print Network [OSTI]

We present deep near-infrared images of the Antennae galaxies, taken with the Palomar Wide-Field Infrared Camera WIRC. The images cover a 4.33' x 4.33' (24.7kpc x 24.7kpc) area around the galaxy interaction zone. We derive J and K_s band photometric fluxes for 172 infrared star clusters, and discuss details of the two galactic nuclei and the overlap region. We also discuss the properties of a subset of 27 sources which have been detected with WIRC, HST and the VLA. The sources in common are young clusters of less than 10 Myr, which show no correlation between their infrared colors and 6 cm radio properties. These clusters cover a wide range in infrared color due to extinction and evolution. The average extinction is about A_V~2 mag while the reddest clusters may be reddened by up to 10 magnitudes.

B. R. Brandl; D. M. Clark; S. S. Eikenberry; J. C. Wilson; C. P. Henderson; D. J. Barry; J. R. Houck; J. C. Carson; T. L. Hayward

2005-09-06T23:59:59.000Z

231

32 Bin Near-Infrared Time-Multiplexing Detector with Attojoule Single-Shot Energy Resolution  

E-Print Network [OSTI]

We present two implementations of photon counting time-multiplexing detectors for near-infrared wavelengths, based on Peltier cooled InGaAs/InP avalanche photo diodes (APDs). A first implementation is motivated by practical considerations using only commercially available components. It features 16 bins, pulse repetition rates of up to 22 kHz and a large range of applicable pulse widths of up to 100 ns. A second implementation is based on rapid gating detectors, permitting deadtimes below 10 ns. This allows one to realize a high dynamic-range 32 bin detector, able to process pulse repetition rates of up to 6 MHz for pulse width of up to 200 ps. Analysis of the detector response at 16.5% detection efficiency, reveals a single-shot energy resolution on the attojoule level.

Patrick Eraerds; Jun Zhang; Enrico Pomarico; Bruno Sanguinetti; Rob Thew; Hugo Zbinden

2010-06-07T23:59:59.000Z

232

Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic circuit  

E-Print Network [OSTI]

Near-infrared Hong-Ou-Mandel quantum interference is observed in silicon nanophotonic directional couplers with raw visibilities on-chip at 90.5%. Spectrally-bright 1557-nm two-photon states are generated in a periodically-poled KTiOPO4 waveguide chip, serving as the entangled photon source and pumped with a self-injection locked laser, for the photon statistical measurements. Efficient four-port coupling in the communications C-band and in the high-index-contrast silicon photonics platform is demonstrated, with matching theoretical predictions of the quantum interference visibility. Constituents for the residual quantum visibility imperfection are examined, supported with theoretical analysis of the sequentially-triggered multipair biphoton contribution and techniques for visibility compensation, towards scalable high-bitrate quantum information processing and communications.

Xinan Xu; Zhenda Xie; Jiangjun Zheng; Junlin Liang; Tian Zhong; Mingbin Yu; Serdar Kocaman; Guo-Qiang Lo; Dim-Lee Kwong; Dirk R. Englund; Franco N. C. Wong; Chee Wei Wong

2012-12-03T23:59:59.000Z

233

Note: Near infrared spectral and transient measurements of PbS quantum dots luminescence  

SciTech Connect (OSTI)

We describe an experimental setup for the characterization of luminescence from nanostructures. The setup is intended for steady-state and time-resolved luminescence measurements in the near-infrared region. The setup allows us to study spectral luminescence properties in the spectral range of 0.8–2.0 ?m with high spectral resolution and kinetic luminescence properties between 0.8 and 1.7 ?m with a time resolution of 3 ns. The capabilities of the system are illustrated by taking luminescence measurements from PbS quantum dots. We established the size dependencies of the optical properties of the PbS quantum dots over a wide spectral range. Finally, the energy transfer process was studied with a high temporal and spectral resolution.

Parfenov, P. S., E-mail: qrspeter@pochta.ru; Litvin, A. P., E-mail: litvin88@gmail.com; Ushakova, E. V.; Fedorov, A. V.; Baranov, A. V. [National Research University of Informational Technologies, Mechanics and Optics, 197101 49, Kronverkskiy pr., Saint Petersburg (Russian Federation)] [National Research University of Informational Technologies, Mechanics and Optics, 197101 49, Kronverkskiy pr., Saint Petersburg (Russian Federation); Berwick, K. [School of Electronic and Communications Engineering, Dublin Institute of Technology, Kevin Street, Dublin 8 (Ireland)] [School of Electronic and Communications Engineering, Dublin Institute of Technology, Kevin Street, Dublin 8 (Ireland)

2013-11-15T23:59:59.000Z

234

CHARACTERIZING THE STELLAR PHOTOSPHERES AND NEAR-INFRARED EXCESSES IN ACCRETING T TAURI SYSTEMS  

SciTech Connect (OSTI)

Using NASA Infrared Telescope Facility SpeX data from 0.8 to 4.5 {mu}m, we determine self-consistently the stellar properties and excess emission above the photosphere for a sample of classical T Tauri stars (CTTS) in the Taurus molecular cloud with varying degrees of accretion. This process uses a combination of techniques from the recent literature as well as observations of weak-line T Tauri stars to account for the differences in surface gravity and chromospheric activity between the T Tauri stars and dwarfs, which are typically used as photospheric templates for CTTS. Our improved veiling and extinction estimates for our targets allow us to extract flux-calibrated spectra of the excess in the near-infrared. We find that we are able to produce an acceptable parametric fit to the near-infrared excesses using a combination of up to three blackbodies. In half of our sample, two blackbodies at temperatures of 8000 K and 1600 K suffice. These temperatures and the corresponding solid angles are consistent with emission from the accretion shock on the stellar surface and the inner dust sublimation rim of the disk, respectively. In contrast, the other half requires three blackbodies at 8000, 1800, and 800 K, to describe the excess. We interpret the combined two cooler blackbodies as the dust sublimation wall with either a contribution from the disk surface beyond the wall or curvature of the wall itself, neither of which should have single-temperature blackbody emission. In these fits, we find no evidence of a contribution from optically thick gas inside the inner dust rim.

McClure, M. K.; Calvet, N.; Hartmann, L.; Ingleby, L. [Department of Astronomy, University of Michigan, 500 Church Street, 830 Dennison Building, Ann Arbor, MI 48109 (United States); Espaillat, C. [Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Hernandez, J. [Centro de Investigaciones de Astronomia (CIDA), Merida 5101-A (Venezuela, Bolivarian Republic of); Luhman, K. L. [Department of Astronomy and Astrophysics and the Center for Exoplanets and Habitable Worlds, The Pennsylvania State University, University Park, PA 16802 (United States); D'Alessio, P. [Centro de Radioastronomia y Astrofisica, Universidad Nacional Autonoma de Mexico, 58089 Morelia, Michoacan (Mexico); Sargent, B., E-mail: melisma@umich.edu, E-mail: ncalvet@umich.edu, E-mail: lhartm@umich.edu, E-mail: lingleby@umich.edu, E-mail: cespaillat@cfa.harvard.edu, E-mail: hernandj@cida.ve, E-mail: kluhman@astro.psu.edu, E-mail: p.dalessio@astrosmo.unam.mx, E-mail: baspci@rit.edu [Center for Imaging Science and Laboratory for Multiwavelength Astrophysics, Rochester Institute of Technology, 54 Lomb Memorial Drive, Rochester, NY 14623 (United States)

2013-05-20T23:59:59.000Z

235

A near-infrared photoluminescence study of GaAs nanocrystals in SiO2 films formed by sequential ion implantation  

E-Print Network [OSTI]

A near-infrared photoluminescence study of GaAs nanocrystals in SiO2 films formed by sequential ion GaAs nanocrystals are formed in SiO2 films and several PL bands appear in the red and near-infrared spectral region. Defects and impurities in GaAs nanocrystals and SiO2 cause weak luminescence in the near-infrared

Atwater, Harry

236

VLT/X-SHOOTER NEAR-INFRARED SPECTROSCOPY AND HST IMAGING OF GRAVITATIONALLY LENSED z ? 2 COMPACT QUIESCENT GALAXIES  

SciTech Connect (OSTI)

Quiescent massive galaxies at z ? 2 are thought to be the progenitors of present-day massive ellipticals. Observations revealed them to be extraordinarily compact. Until now, the determination of stellar ages, star formation rates, and dust properties via spectroscopic measurements has been feasible only for the most luminous and massive specimens (?3 × M*). Here we present a spectroscopic study of two near-infrared-selected galaxies that are close to the characteristic stellar mass M* (?0.9 × M* and ?1.3 × M*) and whose observed brightness has been boosted by the gravitational lensing effect. We measure the redshifts of the two galaxies to be z = 1.71 ± 0.02 and z = 2.15 ± 0.01. By fitting stellar population synthesis models to their spectrophotometric spectral energy distributions we determine their ages to be 2.4{sup +0.8}{sub -0.6} Gyr and 1.7 ± 0.3 Gyr, respectively, which implies that the two galaxies have higher mass-to-light ratios than most quiescent z ? 2 galaxies in other studies. We find no direct evidence for active star formation or active galactic nucleus activity in either of the two galaxies, based on the non-detection of emission lines. Based on the derived redshifts and stellar ages we estimate the formation redshifts to be z=4.3{sup +3.4}{sub -1.2} and z=4.3{sup +1.0}{sub -0.6}, respectively. We use the increased spatial resolution due to the gravitational lensing to derive constraints on the morphology. Fitting Sérsic profiles to the de-lensed images of the two galaxies confirms their compactness, with one of them being spheroid-like and the other providing the first confirmation of a passive lenticular galaxy at a spectroscopically derived redshift of z ? 2.

Geier, S.; Man, A. W. S.; Krühler, T.; Toft, S.; Fynbo, J. P. U. [Dark Cosmology Centre, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen (Denmark); Richard, J. [Centre de Recherche Astronomique de Lyon, Université Lyon 1, 9 Avenue Charles Andre, F-69230 Saint Genis Laval (France); Marchesini, D., E-mail: sgeier@astro.ku.dk [Department of Physics and Astronomy, Tufts University, Medford, MA 06520 (United States)

2013-11-10T23:59:59.000Z

237

Classification of Jet Fuel Properties by Near-Infrared Spectroscopy Using Fuzzy Rule-Building Expert Systems and Support Vector Machines  

Science Journals Connector (OSTI)

Monitoring the changes of jet fuel physical properties is important because fuel used in high-performance aircraft must meet rigorous specifications. Near-infrared (NIR) spectroscopy...

Xu, Zhanfeng; Bunker, Christopher E; Harrington, Peterde B

2010-01-01T23:59:59.000Z

238

Augmentation of Near-infrared (Nir) and In-plant Beef Video Image Analysis (Via) Systems to Sort Carcasses into Tenderness Categories.  

E-Print Network [OSTI]

??Near-infrared (NIR) spectroscopy and video image analysis (VIA) are useful tools that can provide information about quality, yield, and tenderness of beef carcasses. The objectives… (more)

Price, Dennis Michael

2008-01-01T23:59:59.000Z

239

Near-Infrared Spectroscopic Investigation of the Hydrothermal Degradation Mechanism of Wood as an Analogue of Archaeological Wood. Part II: Hardwood  

Science Journals Connector (OSTI)

Near-infrared (NIR) spectroscopy and chemometrics were applied to analyze the degradation mechanism of hardwood following hydrothermal treatment. NIR spectra, chemical composition,...

Inagaki, Tetsuya; Mitsui, Katsuya; Tsuchikawa, Satoru

2009-01-01T23:59:59.000Z

240

A near-infrared census of the multi-component stellar structure of early-type dwarf galaxies in the Virgo cluster  

E-Print Network [OSTI]

The fraction of star-forming to quiescent dwarf galaxies varies from almost infinity in the field to zero in the centers of rich galaxy clusters. What is causing this pronounced morphology-density relation? What do quiescent dwarf galaxies look like when studied in detail, and what conclusions can be drawn about their formation mechanism? Here we study a nearly magnitude-complete sample (-19 deep near-infrared images from the SMAKCED project. We fit two-dimensional models with optional inner and outer components, as well as bar and lens components (in ~15% of the galaxies), to the galaxy images. While a single S\\'ersic function may approximate the overall galaxy structure, it does not entirely capture the light distribution of two-thirds of our galaxies, for which multi-component models provide a better fit. This fraction of complex galaxies shows a strong dependence on luminosity, being larger for brighter objects. We analyze the global and compone...

Janz, J; Lisker, T; Salo, H; Peletier, R F; Niemi, S -M; Toloba, E; Hensler, G; Falcón-Barroso, J; Boselli, A; Brok, M den; Hansson, K S A; Meyer, H T; Ry?, A; Paudel, S

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

InAs(ZnCdS) Quantum Dots Optimized for Biological Imaging in the Near-Infrared  

E-Print Network [OSTI]

We present the synthesis of InAs quantum dots (QDs) with a ZnCdS shell with bright and stable emission in the near-infrared (NIR, 700?900 nm) region for biological imaging applications. We demonstrate how NIR QDs can image ...

Allen, Peter M.

242

Controlling the Texture and Crystallinity of Evaporated Lead Phthalocyanine Thin Films for Near-Infrared Sensitive Solar Cells  

E-Print Network [OSTI]

Controlling the Texture and Crystallinity of Evaporated Lead Phthalocyanine Thin Films for Near-Infrared Sensitive Solar Cells Karolien Vasseur,, Katharina Broch,§ Alexander L. Ayzner, Barry P. Rand, David Cheyns: To achieve organic solar cells with a broadened spectral absorption, we aim to promote the growth of the near

Schreiber, Frank

243

OPTICAL AND NEAR-INFRARED SPECTROSCOPY OF THE L SUBDWARF SDSS J125637.13-022452.4  

E-Print Network [OSTI]

Red optical and near-infrared spectroscopy are presented for SDSS J125637.13-022452.4, one of only four L subdwarfs reported to date. These data confirm the low-temperature, metal-poor nature of this source, as indicated ...

Burgasser, Adam J.

244

DISCOVERIES FROM A NEAR-INFRARED PROPER MOTION SURVEY USING MULTI-EPOCH TWO MICRON ALL-SKY SURVEY DATA  

E-Print Network [OSTI]

We have conducted a 4030 deg[superscript 2] near-infrared proper motion survey using multi-epoch data from the Two Micron All-Sky Survey (2MASS). We find 2778 proper motion candidates, 647 of which are not listed in SIMBAD. ...

Kirkpatrick, J. Davy

245

Near-infrared photometry of Y dwarfs: low ammonia abundance and the onset of water clouds  

E-Print Network [OSTI]

We present new near-infrared photometry for seven late-type T dwarfs and nine Y-type dwarfs, and lower limit magnitudes for a tenth Y dwarf, obtained at Gemini Observatory. We also present a reanalysis of H-band imaging data from the Keck Observatory Archive, for an eleventh Y dwarf. These data are combined with earlier MKO-system photometry, Spitzer and WISE mid-infrared photometry, and available trigonometric parallaxes, to create a sample of late-type brown dwarfs which includes ten T9-T9.5 dwarfs or dwarf systems, and sixteen Y dwarfs. We compare the data to our models which include updated H_2 and NH_3 opacity, as well as low-temperature condensate clouds. The models qualitatively reproduce the trends seen in the observed colors, however there are discrepancies of around a factor of two in flux for the Y0-Y1 dwarfs, with T_eff~350-400K. At T_eff~400K, the problems could be addressed by significantly reducing the NH_3 absorption, for example by halving the abundance of NH_3 possibly by vertical mixing. At...

Leggett, S K; Marley, M S; Saumon, D

2014-01-01T23:59:59.000Z

246

Near Infrared Observations of GQ Lup b Using the Gemini Integral Field Spectrograph NIFS  

E-Print Network [OSTI]

We present new JHK spectroscopy (R ~ 5000) of GQ Lup b, acquired with the near-infrared integral field spectrograph NIFS and the adaptive optics system ALTAIR at the Gemini North telescope. Angular differential imaging was used in the J and H bands to suppress the speckle noise from GQ Lup A; we show that this approach can provide improvements in signal-to-noise ratio (S/N) by a factor of 2 - 6 for companions located at subarcsecond separations. Based on high quality observations and GAIA synthetic spectra, we estimate the companion effective temperature to Teff = 2400 +/- 100 K, its gravity to log g = 4.0 +/- 0.5, and its luminosity to log(L/L_s) = -2.47 +/- 0.28. Comparisons with the predictions of the DUSTY evolutionary tracks allow us to constrain the mass of GQ Lup b to 8 - 60 MJup, most likely in the brown dwarf regime. Compared with the spectra published by Seifahrt and collaborators, our spectra of GQ Lup b are significantly redder (by 15 - 50%) and do not show important Pa\\beta emission. Our spectra ...

Lavigne, Jean-Francois; Lafreniere, David; Marois, Christian; Barman, Travis

2009-01-01T23:59:59.000Z

247

Electronic transitions of single silicon vacancy centers in the near-infrared spectral region  

E-Print Network [OSTI]

Photoluminescence (PL) spectra of single silicon vacancy (SiV) centers frequently feature very narrow room temperature PL lines in the near-infrared (NIR) spectral region, mostly between 820 nm and 840 nm, in addition to the well known zero-phonon-line (ZPL) at approx. 738 nm [E. Neu et al., Phys. Rev. B 84, 205211 (2011)]. We here exemplarily prove for a single SiV center that this NIR PL is due to an additional purely electronic transition (ZPL). For the NIR line at 822.7 nm, we find a room temperature linewidth of 1.4 nm (2.6 meV). The line saturates at similar excitation power as the ZPL. ZPL and NIR line exhibit identical polarization properties. Cross-correlation measurements between the ZPL and the NIR line reveal anti-correlated emission and prove that the lines originate from a single SiV center, furthermore indicating a fast switching between the transitions (0.7 ns). g(2) auto-correlation measurements exclude that the NIR line is a vibronic sideband or that it arises due to a transition from/to a meta-stable (shelving) state.

Elke Neu; Roland Albrecht; Martin Fischer; Stefan Gsell; Matthias Schreck; Christoph Becher

2012-04-23T23:59:59.000Z

248

The Strengths of Near-Infrared Absorption Features Relevant to Interstellar and Planetary Ices  

E-Print Network [OSTI]

The abundances of ices in planetary environments have historically been obtained through measurements of near-infrared absorption features (lambda = 1.0-2.5 microns), and near-IR transmission measurements of materials present in the interstellar medium are becoming more common. For transmission measurements, the band strength (or absorption intensity) of an absorption feature must be known in order to determine the column density of an ice component. In the experiments presented here, we have measured the band strengths of the near-IR absorption features for several molecules relevant to the study of interstellar icy grain mantles and icy planetary bodies: CO (carbon monoxide), CO2 (carbon dioxide), C3O2 (carbon suboxide), CH4 (methane), H2O (water), CH3OH (methanol), and NH3 (ammonia). During a vacuum deposition, the sizes of the near-IR features were correlated with that of a studied mid-IR feature whose strength is well known from previous ice studies. These data may be used to determine ice abundances from observed near-IR spectra of interstellar and planetary materials or to predict the sizes of near-IR features in spectral searches for these molecules in astrophysical environments.

P. A. Gerakines; J. J. Bray; A. Davis; C. R. Richey

2005-02-16T23:59:59.000Z

249

Liquid 1-propanol studied by neutron scattering, near-infrared, and dielectric spectroscopy  

SciTech Connect (OSTI)

Liquid monohydroxy alcohols exhibit unusual dynamics related to their hydrogen bonding induced structures. The connection between structure and dynamics is studied for liquid 1-propanol using quasi-elastic neutron scattering, combining time-of-flight and neutron spin-echo techniques, with a focus on the dynamics at length scales corresponding to the main peak and the pre-peak of the structure factor. At the main peak, the structural relaxation times are probed. These correspond well to mechanical relaxation times calculated from literature data. At the pre-peak, corresponding to length scales related to H-bonded structures, the relaxation times are almost an order of magnitude longer. According to previous work [C. Gainaru, R. Meier, S. Schildmann, C. Lederle, W. Hiller, E. Rössler, and R. Böhmer, Phys. Rev. Lett. 105, 258303 (2010)] this time scale difference is connected to the average size of H-bonded clusters. The relation between the relaxation times from neutron scattering and those determined from dielectric spectroscopy is discussed on the basis of broad-band permittivity data of 1-propanol. Moreover, in 1-propanol the dielectric relaxation strength as well as the near-infrared absorbance reveal anomalous behavior below ambient temperature. A corresponding feature could not be found in the polyalcohols propylene glycol and glycerol.

Sillrén, P.; Matic, A.; Karlsson, M. [Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteborg (Sweden)] [Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteborg (Sweden); Koza, M.; Maccarini, M.; Fouquet, P. [Institut Laue Langevin, 6, rue Jules Horowitz, BP 156, 38042 Grenoble Cedex 9 (France)] [Institut Laue Langevin, 6, rue Jules Horowitz, BP 156, 38042 Grenoble Cedex 9 (France); Götz, M.; Bauer, Th.; Gulich, R.; Lunkenheimer, P.; Loidl, A. [Experimental Physics V, University of Augsburg, 86135 Augsburg (Germany)] [Experimental Physics V, University of Augsburg, 86135 Augsburg (Germany); Mattsson, J. [School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom)] [School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom); Gainaru, C.; Vynokur, E.; Schildmann, S.; Bauer, S.; Böhmer, R. [Fakultät für Physik, Technische Universität Dortmund, 44221 Dortmund (Germany)] [Fakultät für Physik, Technische Universität Dortmund, 44221 Dortmund (Germany)

2014-03-28T23:59:59.000Z

250

A NEAR-INFRARED SPECTROSCOPIC STUDY OF YOUNG FIELD ULTRACOOL DWARFS  

SciTech Connect (OSTI)

We present a near-infrared (0.9-2.4 {mu}m) spectroscopic study of 73 field ultracool dwarfs having spectroscopic and/or kinematic evidence of youth ( Almost-Equal-To 10-300 Myr). Our sample is composed of 48 low-resolution (R Almost-Equal-To 100) spectra and 41 moderate-resolution spectra (R {approx}> 750-2000). First, we establish a method for spectral typing M5-L7 dwarfs at near-IR wavelengths that is independent of gravity. We find that both visual and index-based classification in the near-IR provides consistent spectral types with optical spectral types, though with a small systematic offset in the case of visual classification at J and K band. Second, we examine features in the spectra of {approx}10 Myr ultracool dwarfs to define a set of gravity-sensitive indices based on FeH, VO, K I, Na I, and H-band continuum shape. We then create an index-based method for classifying the gravities of M6-L5 dwarfs that provides consistent results with gravity classifications from optical spectroscopy. Our index-based classification can distinguish between young and dusty objects. Guided by the resulting classifications, we propose a set of low-gravity spectral standards for the near-IR. Finally, we estimate the ages corresponding to our gravity classifications.

Allers, K. N. [Department of Physics and Astronomy, Bucknell University, Lewisburg, PA 17837 (United States); Liu, Michael C., E-mail: k.allers@bucknell.edu [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States)

2013-08-01T23:59:59.000Z

251

Near-Infrared Imaging of the Central Regions of Metal-Poor Inner Spheroid Globular Clusters  

E-Print Network [OSTI]

JHK images obtained with the Canada-France-Hawaii Telescope (CFHT) Adaptive Optics Bonnette (AOB) are used to investigate the near-infrared photometric properties of red giant branch (RGB) and horizontal branch (HB) stars in eight metal-poor globular clusters with R_GC < 2 kpc. The slope of the RGB on the (K, J-K) CMDs confirms the metal-poor nature of these clusters, four of which appear to have metallicities comparable to M92. The luminosity functions of RGB stars in inner spheroid and outer halo clusters have similar slopes, although there is a tendency for core-collapsed clusters to have slightly flatter luminosity functions than non-collapsed clusters. The distribution of red HB stars on the (K, J-K) CMDs of inner spheroid clusters with [Fe/H] ~ -1.5 is very different from that of clusters with [Fe/H] ~ -2.2, suggesting that metallicity is the main parameter defining HB content among these objects. The RGB-bump is detected in four of the inner spheroid clusters, and this feature is used to compute distances to these objects. Finally, the specific frequency of globular clusters in the inner Galaxy is discussed in the context of the early evolution of the bulge. If the globular cluster formation efficiency for the inner Galaxy is similar to that measured in other spheroidal systems, then the main body of the bulge could have formed from gas that was chemically enriched in situ.

T. J. Davidge

2001-04-26T23:59:59.000Z

252

Near-infrared induced optical quenching effects on mid-infrared quantum cascade lasers  

SciTech Connect (OSTI)

In space communications, atmospheric absorption and Rayleigh scattering are the dominant channel impairments. Transmission using mid-infrared (MIR) wavelengths offers the benefits of lower loss and less scintillation effects. In this work, we report the telecom wavelengths (1.55??m and 1.3??m) induced optical quenching effects on MIR quantum cascade lasers (QCLs), when QCLs are operated well above their thresholds. The QCL output power can be near 100% quenched using 20?mW of near-infrared (NIR) power, and the quenching effect depends on the input NIR intensity as well as wavelength. Time resolved measurement was conducted to explore the quenching mechanism. The measured recovery time is around 14?ns, which indicates that NIR generated electron-hole pairs may play a key role in the quenching process. The photocarrier created local field and band bending can effectively deteriorate the dipole transition matrix element and quench the QCL. As a result, MIR QCLs can be used as an optical modulator and switch controlled by NIR lasers. They can also be used as “converters” to convert telecom optical signals into MIR optical signals.

Guo, Dingkai, E-mail: dingk1@umbc.edu; Talukder, Muhammad Anisuzzaman; Chen, Xing [Department of Computer Science and Electrical Engineering, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250 (United States); Cai, Hong [Center of Advanced Studies in Photonics Research (CASPR), University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250 (United States); Johnson, Anthony M.; Choa, Fow-Sen [Department of Computer Science and Electrical Engineering, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250 (United States); Center of Advanced Studies in Photonics Research (CASPR), University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250 (United States); Khurgin, Jacob B. [Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, Maryland 21218 (United States)

2014-06-23T23:59:59.000Z

253

Probing long-period companions to planetary hosts. VLT and CFHT near infrared coronographic imaging surveys  

E-Print Network [OSTI]

We present the results of a deep imaging survey of stars surrounded by planets detected with the radial velocity technique. The purpose is to search for and to characterize long-period stellar and substellar companions. The sample contains a total of 26 stars, among which 6 exhibit additional radial velocity drifts. We used NACO, at the ESO Very Large Telescope, and PUEO-KIR, at the Candian French Hawaiian Telescope, to conduct a near-infrared coronographic survey with adaptive optics of the faint circumstellar environment of the planetary hosts. The domain investigated ranges between 0.1 to 15" (i.e. about 3 to 500 AU, according to the mean distance of the sample). The survey is sensitive to companions within the stellar and the substellar domains, depending on the distance to the central stars and on the star properties. The images of 14 stars do not reveal any companions once the field objects are removed. 8 stars have close potential companions that need to be re-observed within 1-2 years to check for physical companionship. 4 stars are surrounded by faint objects which are confirmed or very probable companions. The companion to HD13445 (Gliese 86) is already known. The HD196885 star is a new close visual binary system with a high probability of being bound. The 2 newly discovered companions, HD1237 B and HD27442 B, share common proper motions with the central stars. Orbital motion is detected for HD1237 B. HD1237 B is likely a low-mass M star, located at 70 AU (projected distance) from the primary. HD27442 B is most probably a white dwarf companion located at about 240 AU (projected distance).

G. Chauvin; A. -M. Lagrange; S. Udry; T. Fusco; F. Galland; D. Naef; J. -L. Beuzit; M. Mayor

2006-06-07T23:59:59.000Z

254

COMPARATIVE STUDY OF ASYMMETRY ORIGIN OF GALAXIES IN DIFFERENT ENVIRONMENTS. II. NEAR-INFRARED OBSERVATIONS  

SciTech Connect (OSTI)

In this second paper of two analyses, we present near-infrared (NIR) morphological and asymmetry studies performed in a sample of 92 galaxies found in different density environments: galaxies in compact groups (CGs; HCGs in the Hickson Catalog of Compact Groups of Galaxies), isolated pairs of galaxies (KPGs in Karachentsev's list of isolated pairs of galaxies), and isolated galaxies (KIGs in Karachentseva's Catalog of Isolated Galaxies). Both studies have proved useful for identifying the effect of interactions on galaxies. In the NIR, the properties of the galaxies in HCGs, KPGs, and KIGs are more similar than they are in the optical. This is because the NIR band traces the older stellar populations, which formed earlier and are more relaxed than the younger populations. However, we found asymmetries related to interactions in both KPG and HCG samples. In HCGs, the fraction of asymmetric galaxies is even higher than what we found in the optical. In the KPGs the interactions look like very recent events, while in the HCGs galaxies are more morphologically evolved and show properties suggesting they suffered more frequent interactions. The key difference seems to be the absence of star formation in the HCGs; while interactions produce intense star formation in the KPGs, we do not see this effect in the HCGs. This is consistent with the dry merger hypothesis; the interaction between galaxies in CGs is happening without the presence of gas. If the gas was spent in stellar formation (to build the bulge of the numerous early-type galaxies), then the HCGs possibly started interacting sometime before the KPGs. On the other hand, the dry interaction condition in CGs suggests that the galaxies are on merging orbits, and consequently such system cannot be that much older either. Cosmologically speaking, the difference in formation time between pairs of galaxies and CGs may be relatively small. The two phenomena are typical of the formation of structures in low-density environments. Their formation represents relatively recent events.

Plauchu-Frayn, I.; Coziol, R., E-mail: plauchuf@astro.ugto.m, E-mail: rcoziol@astro.ugto.m [Departamento de AstronomIa, Universidad de Guanajuato Apartado Postal 144, 36000 Guanajuato, Gto (Mexico)

2010-08-15T23:59:59.000Z

255

OPTICAL/NEAR-INFRARED SELECTION OF RED QUASI-STELLAR OBJECTS: EVIDENCE FOR STEEP EXTINCTION CURVES TOWARD GALACTIC CENTERS?  

SciTech Connect (OSTI)

We present the results of a search for red QSOs using a selection based on optical imaging from the Sloan Digital Sky Survey (SDSS) and near-infrared imaging from UKIDSS. Our main goal with the selection is to search for QSOs reddened by foreground dusty absorber galaxies. For a sample of 58 candidates (including 20 objects fulfilling our selection criteria that already have spectra in the SDSS), 46 (79%) are confirmed to be QSOs. The QSOs are predominantly dust-reddened except for a handful at redshifts z {approx}> 3.5. However, the dust is most likely located in the QSO host galaxies (and for two, the reddening is primarily caused by Galactic dust) rather than in the intervening absorbers. More than half of the QSOs show evidence of associated absorption (BAL absorption). Four (7%) of the candidates turned out to be late-type stars, and another four (7%) are compact galaxies. We could not identify the remaining four objects. In terms of their optical spectra, these QSOs are similar to the QSOs selected in the FIRST-2MASS Red Quasar Survey except they are on average fainter, more distant, and only two are detected in the FIRST survey. As per the usual procedure, we estimate the amount of extinction using the SDSS QSO template reddened by Small-Magellanic-Cloud-(SMC) like dust. It is possible to get a good match to the observed (rest-frame ultraviolet) spectra, but it is not possible to match the observed near-IR photometry from UKIDSS for nearly all the reddened QSOs. The most likely reasons are that the SDSS QSO template is too red at optical wavelengths due to contaminating host galaxy light and because the assumed SMC extinction curve is too shallow. Three of the compact galaxies display old stellar populations with ages of several Gyr and masses of about 10{sup 10} M{sub Sun} (based on spectral energy distribution modeling). The inferred stellar densities in these galaxies exceed 10{sup 10} M{sub Sun} kpc{sup -2}, which is among the highest measured for early-type galaxies. Our survey has demonstrated that selection of QSOs based on near-IR photometry is an efficient way to select QSOs, including reddened QSOs, with only small contamination from late-type stars and compact galaxies. This will be useful with ongoing and future wide-field near-IR surveys such as the VISTA and EUCLID surveys.

Fynbo, J. P. U.; Krogager, J.-K.; Vestergaard, M.; Geier, S. [Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen O (Denmark); Venemans, B. [Max-Planck Institute for Astronomy, Koenigstuhl 17, D-69117 Heidelberg (Germany); Noterdaeme, P. [CNRS-UPMC, UMR7095, Institut d'Astrophysique de Paris, 98bis Bd. Arago, F-75014 Paris (France); Moller, P. [European Southern Observatory, Karl-Schwarzschildstrasse 2, D-85748 Garching bei Muenchen (Germany); Ledoux, C. [European Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago 19 (Chile)

2013-01-15T23:59:59.000Z

256

Near-infrared single-photon spectroscopy of a whispering gallery mode resonator using energy-resolving transition edge sensors  

E-Print Network [OSTI]

We demonstrate a method to perform spectroscopy of near-infrared single photons without the need of dispersive elements. This method is based on a photon energy resolving transition edge sensor and is applied for the characterization of widely wavelength tunable narrow-band single photons emitted from a crystalline whispering gallery mode resonator. We measure the emission wavelength of the generated signal and idler photons with an uncertainty of up to 2 nm.

Michael Förtsch; Thomas Gerrits; Martin J. Stevens; Dmitry Strekalov; Gerhard Schunk; Josef U. Fürst; Ulrich Vogl; Florian Sedlmeir; Harald G. L. Schwefel; Gerd Leuchs; Sae Woo Nam; Christoph Marquardt

2014-10-23T23:59:59.000Z

257

Radio and near-infrared observations of the steep spectrum Galactic plane radio source WKB 0314+57.8  

E-Print Network [OSTI]

Radio and near-infared observations towards the steep spectrum Galactic plane radio source WKB 0314+57.8 are presented, in order to clarify the nature of this source. The radio observations include archival and survey data, together with new Giant Metrewave Radio Telescope observations at 617 MHz. The near-infrared observations are in the J and K bands, from the Gemini instrument on the Shane 3-m telescope. The radio observations show that WKB 0314+57.8 is extended, with an very steep spectrum (with flux density proportional to frequency to -2.5 power between 40 MHz and 1.5 GHz). The colour--magnitude diagram constructed from near-infrared observations of the field suggests the presence of a z approx 0.08 galaxy cluster behind the Galactic plane, reddened by about 6 magnitudes of visual extinction. Although the steep spectrum source has no obvious identification, two other radio sources in the field covered by the near-infrared observations have tentative identifications with galaxies. These observations indicate that WKB 0314+57.8 is a relic source in a cluster of galaxies, not a pulsar.

D. A. Green; M. Lacy; S. Bhatnagar; E. L. Gates; P. J. Warner

2004-08-06T23:59:59.000Z

258

Near-Infrared Constraints on the Presence of Warm Dust at Metal-Rich, Helium Atmosphere White Dwarfs  

E-Print Network [OSTI]

Here, we present near-infrared spectroscopic observations of 15 helium atmosphere, metal-rich white dwarfs obtained at the NASA Infrared Telescope Facility. While a connection has been demonstrated between the most highly polluted, hydrogen atmosphere white dwarfs and the presence of warm circumstellar dust and gas, their frequency at the helium atmosphere variety is poorly constrained. None of our targets show excess near-infrared radiation consistent with warm orbiting material. Adding these near-infrared constraints to previous near- and mid-infrared observations, the frequency of warm circumstellar material at metal-bearing white dwarfs is at least 20% for hydrogen-dominated photospheres, but could be less than 5% for those effectively composed of helium alone. The lower occurrence of dust disks around helium atmosphere white dwarfs is consistent with Myr timescales for photospheric metals in massive convection zones. Analyzing the mass distribution of 10 white dwarfs with warm circumstellar material, we search for similar trends between the frequency of disks and the predicted frequency of massive planets around intermediate mass stars, but find the probability that disk-bearing white dwarfs are more massive than average is not significant.

Mukremin Kilic; J. Farihi; Atsuko Nitta; S. K. Leggett

2008-04-21T23:59:59.000Z

259

Near-infrared evolution of brightest cluster galaxies in the most X-ray luminous clusters since z=1  

E-Print Network [OSTI]

We investigate the near infrared evolution of brightest cluster galaxies (BCGs) from a sample of rich galaxy clusters since z=1. By employing an X-ray selection of Lx>1e44 erg s-1 we limit environmental effects by selecting BCGs in comparably high density regions. We find a positive relationship between X-ray and near-infrared luminosity for BCGs in clusters with Lx>5e44 erg s-1. Applying a correction for this relation we reduce the scatter in the BCG absolute magnitude by a factor of 30%. The near-infrared J-K colour evolution demonstrates that the stellar population in BCGs has been in place since at least z=2 and that we expect a shorter period of star formation than that predicted by current hierarchical merger models. We also confirm that there is a relationship between `blue' J-K colour and the presence of BCG emission lines associated with star formation in cooling flows.

J. P. Stott; A. C. Edge; G. P. Smith; A. M. Swinbank; H. Ebeling

2007-12-04T23:59:59.000Z

260

Near-Infrared Observations of Globular Clusters in NGC 4472, NGC 4594, NGC 3585 and NGC 5813 and Implications for their Ages and Metallicities  

E-Print Network [OSTI]

We present near-infrared photometry of the globular cluster systems of the early-type galaxies NGC 4472, NGC 4594, NGC 3585, and NGC 5813. We combine these near-infrared data, obtained with PANIC at the Magellan Baade 6.5m telescope, with archival optical HST and FORS/VLT data, and use the optical to near-infrared colors to constrain the ages and metallicities of the globular clusters around the target galaxies. For NGC 4472 we have the most extensive near-infrared and optical photometric dataset. These colors show that the NGC 4472 globular cluster system has a broad metallicity distribution and that the clusters are predominantly old (i.e. ages of about 10 Gyr or more). This result agrees well with earlier spectroscopic work on NGC 4472, and is evidence that the combination of optical to near-infrared colors can identify predominantly old systems and distinguish these from systems with a substantial intermediate age component. Based on the smaller sample of combined optical and near-infrared data NGC 4594 and NGC 3585 appear to have predominantly old globular cluster systems, while that of NGC 5813 may have a more significant age spread. We also match our sample of globular clusters with near-infrared and optical photometry to Chandra X-ray source detections in these galaxies, and discuss how the probability that a globular cluster hosts a low-mass X-ray binary depends on metallicity and age.

Maren Hempel; Steve Zepf; Arunav Kundu; Doug Geisler; Thomas J. Maccarone

2007-02-19T23:59:59.000Z

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

OPTICAL-NEAR-INFRARED COLOR GRADIENTS AND MERGING HISTORY OF ELLIPTICAL GALAXIES  

SciTech Connect (OSTI)

It has been suggested that merging plays an important role in the formation and the evolution of elliptical galaxies. While gas dissipation by star formation is believed to steepen metallicity and color gradients of the merger products, mixing of stars through dissipation-less merging (dry merging) is believed to flatten them. In order to understand the past merging history of elliptical galaxies, we studied the optical-near-infrared (NIR) color gradients of 204 elliptical galaxies. These galaxies are selected from the overlap region of the Sloan Digital Sky Survey (SDSS) Stripe 82 and the UKIRT Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS). The use of optical and NIR data (g, r, and K) provides large wavelength baselines, and breaks the age-metallicity degeneracy, allowing us to derive age and metallicity gradients. The use of the deep SDSS Stripe 82 images makes it possible for us to examine how the color/age/metallicity gradients are related to merging features. We find that the optical-NIR color and the age/metallicity gradients of elliptical galaxies with tidal features are consistent with those of relaxed ellipticals, suggesting that the two populations underwent a similar merging history on average and that mixing of stars was more or less completed before the tidal features disappeared. Elliptical galaxies with dust features have steeper color gradients than the other two types, even after masking out dust features during the analysis, which can be due to a process involving wet merging. More importantly, we find that the scatter in the color/age/metallicity gradients of the relaxed and merging feature types decreases as their luminosities (or masses) increase at M > 10{sup 11.4} M{sub Sun} but stays large at lower luminosities. Mean metallicity gradients appear nearly constant over the explored mass range, but a possible flattening is observed at the massive end. According to our toy model that predicts how the distribution of metallicity gradients changes as a result of major dry merging, the mean metallicity gradient should flatten by 40% and its scatter becomes smaller by 80% per a mass-doubling scale if ellipticals evolve only through major dry merger. Our result, although limited by a number statistics at the massive end, is consistent with the picture that major dry merging is an important mechanism for the evolution for ellipticals at M > 10{sup 11.4} M{sub Sun }, but is less important at the lower mass range.

Kim, Duho; Im, Myungshin [Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Department of Physics and Astronomy, Seoul National University, 1 Gwanak-rho, Gwanak-gu, Seoul 151-742 (Korea, Republic of)] [Center for the Exploration of the Origin of the Universe (CEOU), Astronomy Program, Department of Physics and Astronomy, Seoul National University, 1 Gwanak-rho, Gwanak-gu, Seoul 151-742 (Korea, Republic of)

2013-04-01T23:59:59.000Z

262

Science of the Total Environment 407: 1200-1205 (2009) http://dx.doi.org/10.1016/j.scitotenv.2008.07.029 1 Predicting soil quality indices with near infrared analysis  

E-Print Network [OSTI]

.07.029 1 Predicting soil quality indices with near infrared analysis in a wildfire chronosequence Lauric@cetiom.fr, Webpage: http://lauric.cecillon.free.fr/ Abstract We investigated the power of near infrared (NIR are involved, its implementation at the landscape scale remains too expensive and time consuming. Near infrared

Boyer, Edmond

263

Soil Biology & Biochemistry 40: 1975-1979 (2008) http://dx.doi.org/10.1016/j.soilbio.2008.03.016 1 Variable selection in near infrared spectra for the biological  

E-Print Network [OSTI]

.03.016 1 Variable selection in near infrared spectra for the biological characterization of soil 564, E-mail: cecillon@cetiom.fr, Webpage: http://lauric.cecillon.free.fr/ Abstract Near infrared & Biochemistry 40: 1975-1979 (2008) ­ http://dx.doi.org/10.1016/j.soilbio.2008.03.016 2 Near infrared reflectance

Boyer, Edmond

264

Use of near infrared reflectance spectroscopy (NIRS) to investigate selection and nutrient utilization of bamboo and to monitor the physiological status of giant pandas (Ailuropoda melanoleuca)  

E-Print Network [OSTI]

The objective of this study was to develop near infrared reflectance spectroscopy (NIRS) calibration equations from bamboo and fecal samples to predict diet composition and the physiological status of giant pandas. Discrimination between branch...

Wiedower, Erin Elizabeth

2009-05-15T23:59:59.000Z

265

The effect of high temperatures on the mid-to-far-infrared emission and near-infrared reflectance spectra of phyllosilicates and natural  

E-Print Network [OSTI]

The effect of high temperatures on the mid-to-far-infrared emission and near-infrared reflectance-to-far-IR) emission (100­1400 cm�1 ; 7.1­100 lm) and near-infrared (NIR) reflectance (1.2­2.5 lm) spectra altered or melted. We characterized the effects of high temperatures on the mid-to-far-infrared (mid

Glotch, Timothy D.

266

Selection of Haploid Maize Kernels from Hybrid Kernels for Plant Breeding Using Near-Infrared Spectroscopy and SIMCA Analysis  

SciTech Connect (OSTI)

Samples of haploid and hybrid seed from three different maize donor genotypes after maternal haploid induction were used to test the capability of automated near-infrared transmission spectroscopy to individually differentiate haploid from hybrid seeds. Using a two-step chemometric analysis in which the seeds were first classified according to genotype and then the haploid or hybrid status was determined proved to be the most successful approach. This approach allowed 11 of 13 haploid and 25 of 25 hybrid kernels to be correctly identified from a mixture that included seeds of all the genotypes.

Jones, Roger W.; Reinot, Tonu; Frei, Ursula K.; Tseng, Yichia; Lübberstedt, Thomas; McClelland, John F.

2012-04-01T23:59:59.000Z

267

The use of muscle near-infrared spectroscopy in sport, health and medical sciences: recent developments  

Science Journals Connector (OSTI)

...participant. Another major advance in quantification of NIRS...energy-harvesting technologies (solar batteries, a light source with sunlight...supply modules and wireless or storage units. Although the technology for data storage and small wireless probe...

2011-01-01T23:59:59.000Z

268

Nanoshell-mediated near-infrared thermal therapy of tumors under magnetic resonance guidance  

Science Journals Connector (OSTI)

...light into thermal energy. Nonetheless, pioneering...used for treatment planning, localization...the temperature distribution during the treatments...Echospeed, General Electric Medical Systems...Workstation, General Electric Medical Systems...sections to assess the distribution of tissue damage...

L. R. Hirsch; R. J. Stafford; J. A. Bankson; S. R. Sershen; B. Rivera; R. E. Price; J. D. Hazle; N. J. Halas; J. L. West

2003-01-01T23:59:59.000Z

269

Physical Properties of Emission-Line Galaxies at z ~ 2 from Near-Infrared Spectroscopy with Magellan FIRE  

E-Print Network [OSTI]

We present results from near-infrared spectroscopy of 26 emission-line galaxies at z ~ 2 obtained with the FIRE spectrometer on the Magellan Baade telescope. The sample was selected from the WISP survey, which uses the near-infrared grism of the Hubble Space Telescope Wide Field Camera 3 to detect emission-line galaxies over 0.3 1 star-forming galaxies, but composite spectra derived from the sample do not show an appreciable offset from the local star-forming sequence on the [O III]/H-beta versus [S II]/H-alpha diagram. We infer a high nitrogen-to-oxygen abundance ratio from the composite spectrum, which may contribute to the offset of the high-redshift galaxies from the local star-forming sequence in the [O III]/H-beta versus [N II]/H-alpha diagram. We speculate that the elevated nitrogen abundance could result from substantial numbers of Wolf-Rayet stars in starbursting galaxies at z~2. (Abridged)

Masters, Daniel; Siana, Brian; Malkan, Matthew; Mobasher, Bahram; Atek, Hakim; Henry, Alaina; Martin, Crystal L; Rafelski, Marc; Hathi, Nimish P; Scarlata, Claudia; Ross, Nathaniel R; Bunker, Andrew J; Blanc, Guillermo A; Bedregal, Alejandro G; Dominguez, Alberto; Colbert, James; Teplitz, Harry; Dressler, Alan

2014-01-01T23:59:59.000Z

270

SPITZER AND NEAR-INFRARED OBSERVATIONS OF A NEW BIPOLAR PROTOSTELLAR OUTFLOW IN THE ROSETTE MOLECULAR CLOUD  

SciTech Connect (OSTI)

We present and discuss Spitzer and near-infrared H{sub 2} observations of a new bipolar protostellar outflow in the Rosette Molecular Cloud. The outflow is seen in all four InfraRed Array Camera (IRAC) bands and partially as diffuse emission in the MIPS 24 {mu}m band. An embedded MIPS 24 {mu}m source bisects the outflow and appears to be the driving source. This source is coincident with a dark patch seen in absorption in the 8 {mu}m IRAC image. Spitzer IRAC color analysis of the shocked emission was performed from which thermal and column density maps of the outflow were constructed. Narrowband near-infrared (NIR) images of the flow reveal H{sub 2} emission features coincident with the high temperature regions of the outflow. This outflow has now been given the designation MHO 1321 due to the detection of NIR H{sub 2} features. We use these data and maps to probe the physical conditions and structure of the flow.

Ybarra, Jason E.; Lada, Elizabeth A.; Fleming, Scott W. [Department of Astronomy, University of Florida, Gainesville, FL 32605 (United States); Balog, Zoltan [Max-Planck-Institut fuer Astronomie, Heidelberg (Germany); Phelps, Randy L., E-mail: jybarra@astro.ufl.ed [National Science Foundation, Office of Integrative Activities, Arlington, VA 22230 (United States)

2010-05-01T23:59:59.000Z

271

THE CENTRAL REGION OF THE BARRED SPIRAL GALAXY NGC 1097 PROBED BY AKARI NEAR-INFRARED SPECTROSCOPY  

SciTech Connect (OSTI)

With the Infrared Camera on board AKARI, we carried out near-infrared (2.5-5.0 {mu}m) spectroscopy of the central kiloparsec region of the barred spiral galaxy, NGC 1097, categorized as Seyfert 1 with a circumnuclear starburst ring. Our observations mapped the area of {approx}50'' Multiplication-Sign 10'' with the resolution of {approx}5'', covering about a half of the ring and the galactic center. As a result, we spatially resolve the starburst ring in the polycyclic aromatic hydrocarbon 3.3 {mu}m, the aliphatic hydrocarbon 3.4-3.6 {mu}m features, and the hydrogen Br{alpha} 4.05 {mu}m emission. They exhibit spatial distributions significantly different from each other, indicating that the environments vary considerably around the ring. In particular, the aliphatic features are enhanced near the bar connecting the ring with the nucleus, where the structure of hydrocarbon grains seems to be relatively disordered. Near the center, the continuum emission and the CO/SiO absorption features are strong, which indicates that the environments inside the ring are dominated by old stellar populations. The near-infrared spectra do not show any evidence for the presence of nuclear activity.

Kondo, Toru; Kaneda, Hidehiro; Oyabu, Shinki; Ishihara, Daisuke; Mori, Tatsuya; Yamagishi, Mitsuyoshi [Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602 (Japan); Onaka, Takashi; Sakon, Itsuki [Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033 (Japan); Suzuki, Toyoaki, E-mail: kondo@u.phys.nagoya-u.ac.jp [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210 (Japan)

2012-05-20T23:59:59.000Z

272

A FLAMINGOS Deep Near Infrared Imaging Survey of the Rosette Complex I: Identification and Distribution of the Embedded Population  

E-Print Network [OSTI]

We present the results of a deep near-infrared imaging survey of the Rosette Complex. We studied the distribution of young embedded sources using a variation of the Nearest Neighbor Method applied to a carefully selected sample of near-infrared excess (NIRX) stars which trace the latest episode of star formation in the complex. Our analysis confirmed the existence of seven clusters previously detected in the molecular cloud, and identified four more clusters across the complex. We determined that 60% of the young stars in the complex and 86% of the stars within the molecular cloud are contained in clusters, implying that the majority of stars in the Rosette formed in embedded clusters. We compare the sizes, infrared excess fractions and average extinction towards individual clusters to investigate their early evolution and expansion. We found that the average infrared excess fraction of clusters increases as a function of distance from NGC 2244, implying a temporal sequence of star formation across the complex. This sequence appears to be primordial, possibly resulting from the formation and evolution of the molecular cloud and not from the interaction with the HII region.

Carlos Roman-Zuniga; Richard Elston; Bruno Ferreira; Elizabeth Lada

2007-09-18T23:59:59.000Z

273

Near-infrared flares from accreting gas around the supermassive black hole at the Galactic Centre  

Science Journals Connector (OSTI)

... . The infrared flares all originated from within a few milliarcseconds, or a few hundred Schwarzschild radii, of the black-hole position (Table 1). That position was determined from ... the infrared flares originate in the innermost accretion zone, on a scale less than ten Schwarzschild radii (the light travel time across the ...

R. Genzel; R. Schödel; T. Ott; A. Eckart; T. Alexander; F. Lacombe; D. Rouan; B. Aschenbach

2003-10-30T23:59:59.000Z

274

Mass-specific light absorption coefficients of natural aquatic particles in the near-infrared spectral region  

E-Print Network [OSTI]

B. Woz´niak 4 1 Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, Institute for Coastal Research, Remote Sensing, Geesthacht, Germany 2 Mediterranean Institute of Oceanography, Marseille

275

NEAR-INFRARED PROPERTIES OF THE X-RAY-EMITTING YOUNG STELLAR OBJECTS IN THE CARINA NEBULA  

SciTech Connect (OSTI)

The Great Nebula in Carina (NGC 3372) is the best target to study in detail the process of violent massive star formation and the resulting feedback effects of cloud dispersal and triggered star formation. While the population of massive stars is rather well studied, the associated low-mass stellar population was largely unknown up to now. The near-infrared study in this paper builds on the results of the Chandra Carina Complex Project, that detected 14,368 X-ray sources in the 1.4 deg{sup 2} survey region, an automatic source classification study that classified 10,714 of these X-ray sources as very likely young stars in Carina, and an analysis of the clustering properties of the X-ray-selected Carina members. In order to determine physical properties of the X-ray-selected stars, most of which were previously unstudied, we used HAWK-I at the ESO Very Large Telescope to conduct a very deep near-IR survey with subarcsecond angular resolution, covering an area of about 1280 arcmin{sup 2}. The HAWK-I images reveal more than 600,000 individual infrared sources, whereby objects as faint as J {approx} 23, H {approx} 22, and K{sub s} {approx} 21 are detected at signal-to-noise ratio (S/N) {>=}3. While less than half of the Chandra X-ray sources have counterparts in the Two Micron All Sky Survey catalog, the {approx}5 mag deeper HAWK-I data reveal infrared counterparts to 6636 (=88.8%) of the 7472 Chandra X-ray sources in the HAWK-I field. We analyze near-infrared color-color and color-magnitude diagrams to derive information about the extinctions, infrared excesses (as tracers for circumstellar disks), ages, and masses of the X-ray-selected objects. The near-infrared properties agree well with the results of the automatic X-ray source classification, showing that the remaining contamination in the X-ray-selected sample of Carina members is very low ({approx}<7%). The shape of the K-band luminosity function of the X-ray-selected Carina members agrees well with that derived for the Orion Nebula Cluster, suggesting that, down to the X-ray detection limit around 0.5-1 M{sub sun}, the shape of the initial mass function (IMF) in Carina is consistent with that in Orion (and thus the field IMF). The fraction of stars with near-infrared excesses is rather small, {approx}<10%, but shows considerable variations between individual parts of the complex. The distribution of extinctions for the diskless stars ranges from {approx}1.6 mag to {approx}6.2 mag (central 80th percentile), clearly showing a considerable range of differential extinction between individual stars in the complex.

Preibisch, Thomas [Universitaets-Sternwarte Muenchen, Ludwig-Maximilians-Universitaet, Scheinerstr. 1, 81679 Muenchen (Germany); Hodgkin, Simon; Irwin, Mike; Lewis, James R. [Cambridge Astronomical Survey Unit, Institute of Astronomy, Madingley Road, Cambridge CB3 0HA (United Kingdom); King, Robert R. [Astrophysics Group, College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QL (United Kingdom); McCaughrean, Mark J. [European Space Agency, Research and Scientific Support Department, ESTEC, Postbus 299, 2200 AG Noordwijk (Netherlands); Zinnecker, Hans [Deutsches SOFIA Institut, Universitaet Stuttgart, Pfaffenwaldring 31, 70569 Stuttgart (Germany); Townsley, Leisa; Broos, Patrick [Department of Astronomy and Astrophysics, Pennsylvania State University, University Park PA 16802 (United States)

2011-05-01T23:59:59.000Z

276

Femtosecond measurements of near-infrared pulse induced mid-infrared transmission modulation of quantum cascade lasers  

SciTech Connect (OSTI)

We temporally resolved the ultrafast mid-infrared transmission modulation of quantum cascade lasers (QCLs) using a near-infrared pump/mid-infrared probe technique at room temperature. Two different femtosecond wavelength pumps were used with photon energy above and below the quantum well (QW) bandgap. The shorter wavelength pump modulates the mid-infrared probe transmission through interband transition assisted mechanisms, resulting in a high transmission modulation depth and several nanoseconds recovery lifetime. In contrast, pumping with a photon energy below the QW bandgap induces a smaller transmission modulation depth but much faster (several picoseconds) recovery lifetime, attributed to intersubband transition assisted mechanisms. The latter ultrafast modulation (>60?GHz) could provide a potential way to realize fast QCL based free space optical communication.

Cai, Hong; Liu, Sheng [Department of Physics, University of Maryland, Baltimore County (UMBC), Baltimore, Maryland 21250 (United States); Center for Advanced Studied in Photonics Research (CASPR), UMBC, Baltimore, Maryland 21250 (United States); Lalanne, Elaine [Center for Advanced Studied in Photonics Research (CASPR), UMBC, Baltimore, Maryland 21250 (United States); Guo, Dingkai; Chen, Xing; Choa, Fow-Sen [Center for Advanced Studied in Photonics Research (CASPR), UMBC, Baltimore, Maryland 21250 (United States); Department of CSEE, UMBC, Baltimore, Maryland 21250 (United States); Wang, Xiaojun [AdTech Optics, Inc., City of Industry, California 91748 (United States); Johnson, Anthony M., E-mail: amj@umbc.edu [Department of Physics, University of Maryland, Baltimore County (UMBC), Baltimore, Maryland 21250 (United States); Center for Advanced Studied in Photonics Research (CASPR), UMBC, Baltimore, Maryland 21250 (United States); Department of CSEE, UMBC, Baltimore, Maryland 21250 (United States)

2014-05-26T23:59:59.000Z

277

Near-Infrared and X-ray Quasi-Periodic Oscillations in Numerical Models of Sgr A*  

E-Print Network [OSTI]

We report transient quasi-periodic oscillations (QPOs) on minute timescales in relativistic, radiative models of the galactic center source Sgr A*. The QPOs result from nonaxisymmetric $m=1$ structure in the accretion flow excited by MHD turbulence. Near-infrared (NIR) and X-ray power spectra show significant peaks at frequencies comparable to the orbital frequency at the innermost stable circular orbit (ISCO) $f_o$. The excess power is associated with inward propagating magnetic filaments inside the ISCO. The amplitudes of the QPOs are sensitive to the electron distribution function. We argue that transient QPOs appear at a range of frequencies in the neighborhood of $f_o$ and that the power spectra, averaged over long times, likely show a broad bump near $f_o$ rather than distinct, narrow QPO features.

Joshua C. Dolence; Charles F. Gammie; Hotaka Shiokawa; Scott C. Noble

2012-01-09T23:59:59.000Z

278

Molecular-like Ag clusters sensitized near-infrared down-conversion luminescence in oxyfluoride glasses for broadband spectral modification  

SciTech Connect (OSTI)

Molecular-like Ag clusters sized at 1–4 nm have been stabilized in Pb/Cd-free oxyfluoride glasses, showing broadband excitation/emission characteristics and unique wavelength-dependent luminescent performance with a maximal quantum yield of 26.9%. It was experimentally demonstrated that an energy transfer route of Ag clusters ? Tb{sup 3+} ? Yb{sup 3+} occurs in Ag{sup +}/Tb{sup 3+}/Yb{sup 3+} tri-doped sample, wherein Ag clusters act as sensitizers for near-infrared down-conversion spectral modification. Hopefully, the proposed strategy that noble metal clusters being applied for harvesting solar radiation may potentially solve the sticky problems of the narrow excitation bandwidth and the low excitation efficiency in rare earth ions doped down-conversion materials.

Lin, Hang; Chen, Daqin; Yu, Yunlong; Zhang, Rui; Wang, Yuansheng [State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China)] [State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China)

2013-08-26T23:59:59.000Z

279

Dynamics of photoexcited carriers in monolayer epitaxial graphene probed by photoluminescence in the near-infrared region  

SciTech Connect (OSTI)

We investigate the dynamics of photoexcited carriers in a single monolayer graphene at room temperature in air by femtosecond time-resolved luminescence measurements. The luminescence kinetics observed in the near-infrared region from 0.7 to 0.9 eV are analyzed based on the two-temperature model describing the cooling of thermalized carriers due to the carrier-optical-phonon coupling. The observed luminescence kinetics are well reproduced by the model, though the calculated electron temperature increases only to ?420 K at the maximum, which is much lower than the optical phonon energies. This indicates the predominance of optical phonons over acoustic phonons in the carrier-phonon interaction even at a temperature of ?400 K.

Koyama, Takeshi [Department of Applied Physics, Nagoya University, Chikusa, Nagoya 464-8603 (Japan); Ito, Yoshito; Yoshida, Kazuma [Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580 (Japan); Ago, Hiroki [Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan and Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka 816-8580 (Japan); Nakamura, Arao [Department of Applied Physics, Nagoya University, Chikusa, Nagoya 464-8603, Japan and Toyota Physical and Chemical Research Institute, Nagakute, Aichi 480-1192 (Japan)

2013-12-04T23:59:59.000Z

280

OPTICAL AND NEAR-INFRARED SPECTROSCOPY OF THE L SUBDWARF SDSS J125637.13-022452.4  

SciTech Connect (OSTI)

Red optical and near-infrared spectroscopy are presented for SDSS J125637.13-022452.4, one of only four L subdwarfs reported to date. These data confirm the low-temperature, metal-poor nature of this source, as indicated by prominent metal-hydride bands, alkali lines, and collision-induced H{sub 2} absorption. The optical and near-infrared spectra of SDSS J1256-0224 are similar to those of the sdL4 2MASS J16262034+3925190, and we derive a classification of sdL3.5 based on the preliminary scheme of Burgasser, Cruz, and Kirkpatrick. The kinematics of SDSS J1256-0224 are consistent with membership in the Galactic inner halo, with estimated UVW space velocities indicating a slightly prograde, eccentric, and inclined Galactic orbit (3.5 {approx}< R {approx}< 11 kpc; |Z {sub max}| = 7.5 kpc). Comparison to synthetic spectra computed with the PHOENIX code, including the recent implementation of kinetic condensate formation (DRIFT-PHOENIX), indicates T {sub eff} {approx} 2100-2500 K and [M/H] {approx} -1.5 to -1.0 for log g {approx} 5.0-5.5 (cgs), although there are clear discrepancies between model and observed spectra particularly in the red optical region. As such, any conclusions on the role of metallicity in condensate grain and cloud formation are probably premature. Indeed, a shift in the temperature scale of L subdwarfs relative to L dwarfs may obviate the need for modified condensate and grain chemistry in low metallicity atmospheres.

Burgasser, Adam J.; Sanderson, Robyn E.; Bochanski, John J. [Massachusetts Institute of Technology, Kavli Institute for Astrophysics and Space Research, Building 37, Room 664B, 77 Massachusetts Avenue, Cambridge, MA 02139 (United States); Witte, Soeren; Hauschildt, Peter H. [Hamburger Sternwarte, Gojenbergsweg 112, 21029 Hamburg (Germany); Helling, Christiane [SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews KY16 9SS (United Kingdom)], E-mail: ajb@mit.edu

2009-05-20T23:59:59.000Z

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

NEAR-INFRARED PHOTOMETRY OF THE CORE-COLLAPSED METAL-POOR GLOBULAR CLUSTERS NGC5946 AND NGC7099  

E-Print Network [OSTI]

Moderately deep near-infrared images are used to investigate the photometric properties and spatial distribution of bright giants near the centers of the core-collapsed globular clusters NGC5946 and NGC7099. The former cluster is located at a low Galactic latitude and is heavily reddened; nevertheless, the K, J-K color-magnitude diagram (CMD) shows a well-defined giant branch, with a width +/- 0.05 magnitudes in J-K. Most of the observed width is due to differential reddening. The upper giant branch is relatively steep, and comparisons with less reddened clusters indicate that (1) NGC5946 must be very metal-poor, with [Fe/H] ~ -2, and (2) E(B-V) ~ 0.6. The distance to NGC5946 derived using the near-infrared brightness of the giant branch tip is in excellent agreement with that computed from the V brightness of the HB if E(B-V) = 0.6. The NGC7099 giant branch terminates ~ 1 mag fainter in K than the expected tip brightness. The integrated J-K color of NGC7099 changes with radius, such that Delta (J-K) /Delta log(r) = 0.05 - 0.09, depending on the technique used to measure colors. Similar radial variations in stellar content might be expected in NGC5946; however, the integrated J-K color of this cluster remains constant with radius and, after removing the brightest resolved stars, a color gradient is seen that is in the opposite sense to that in NGC7099. The relative density of bright giant branch stars also remains constant within 30 arcsec of the center of NGC5946. Therefore, it is concluded that NGC5946 does not contain stellar content gradients similar to those seen in NGC7099 and other post core-collapsed clusters.

T. J. Davidge

1995-05-24T23:59:59.000Z

282

Nanocrystalline Cs{sub x}WO{sub 3} particles: Effects of N{sub 2} annealing on microstructure and near-infrared shielding characteristics  

SciTech Connect (OSTI)

In order to further improve the near-infrared shielding properties of cesium tungsten bronze (Cs{sub x}WO{sub 3}) for solar filter applications, Cs{sub x}WO{sub 3} particles were prepared by solvothermal reaction method and the effects of nitrogen annealing on the microstructure and near-infrared shielding properties of Cs{sub x}WO{sub 3} were investigated. The obtained Cs{sub x}WO{sub 3} samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and spectrophotometer. The results indicate that nanosheet-like Cs{sub x}WO{sub 3} particles with hexagonal structure began to transform into nanorods after annealed at temperature higher than 600 °C. The near-infrared shielding properties of Cs{sub x}WO{sub 3} particles could be further improved by N{sub 2} annealing at 500–700 °C. Particularly, the 500 °C-annealed Cs{sub x}WO{sub 3} samples in the N{sub 2} atmosphere showed best near-infrared shielding properties. It was suggested that the excellent near-infrared shielding ability of the 500 °C-annealed Cs{sub x}WO{sub 3} samples is correlated with its minimum O/W atomic ratio and most oxygen vacancies. Highlights: • N{sub 2} annealing could further improve the near-infrared (NIR) shielding of Cs{sub x}WO{sub 3}. • Effects of N{sub 2} annealing on microstructure and NIR shielding of Cs{sub x}WO{sub 3} were studied. • The 500 °C-N{sub 2}-annealed Cs{sub x}WO{sub 3} exhibited minimum O/W ratio and most oxygen vacancies. • The 500 °C-N{sub 2}-annealed Cs{sub x}WO{sub 3} particles exhibited best NIR shielding properties.

Liu, Jing-Xiao, E-mail: drliu-shi@dlpu.edu.cn [School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034 (China); Institute of Multidisciplinary Research for Advanced Material, Tohoku University, Sendai, 980-8577,Japan (Japan); Shi, Fei; Dong, Xiao-Li; Xu, Qiang [School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034 (China); Yin, Shu; Sato, Tsugio [Institute of Multidisciplinary Research for Advanced Material, Tohoku University, Sendai, 980-8577,Japan (Japan)

2013-10-15T23:59:59.000Z

283

CARMENES: Calar Alto high-Resolution search for M dwarfs with Exo-earths with a Near-infrared Echelle Spectrograph  

E-Print Network [OSTI]

CARMENES, Calar Alto high-Resolution search for M dwarfs with Exo-earths with a Near-infrared Echelle Spectrograph, is a study for a next-generation instrument for the 3.5m Calar Alto Telescope to be designed, built, integrated, and operated by a consortium of nine German and Spanish institutions. Our main objective is finding habitable exoplanets around M dwarfs, which will be achieved by radial velocity measurements on the m/s level in the near-infrared, where low-mass stars emit the bulk of their radiation.

Quirrenbach, A; Mandel, H; Caballero, J A; Ribas, I; Reiners, A; Mundt, R; Abril, M; Afonso, C; Bean, J L; Bejar, V J S; Becerril, S; Boehm, A; Cardenas, C; Claret, A; Colome, J; Costillo, L P; Dreizler, S; Fernandez, M; Francisco, X; Garrido, R; Hernandez, J I Gonzalez; Guenther, E W; Gutierrez-Soto, J; Joergens, V; Hatzes, A P; Henning, T; Herrero, E; Kurster, M; Laun, W; Lenzen, R; Mall, U; Martin, E L; Martin-Ruiz, S; Montes, D; Morales, J C; Munoz, R Morales; Moya, A; Naranjo, V; Rabaza, O; Ramon, A; Rebolo, R; Reffert, S; Rodler, F; Rodriguez, E; Trinidad, A Rodriguez; Rohloff, R -R; Carrasco, M A Sanchez; Schmidt, C; Seifert, W; Setiawan, J; Stahl, O; Suarez, J C; Wiedemann, G; del Burgo, C; Galadi, D; Sanchez-Blanco, E; Xu, W

2009-01-01T23:59:59.000Z

284

ESPC ENABLE: ECM Summary  

Broader source: Energy.gov (indexed) [DOE]

ESPC ENABLE: ECM Summary ESPC ENABLE: ECM Summary ECM Included Not Included Lighting * Lamps, Ballasts, Fixtures * Controls: Occupancy, Day lighting (on/off, dimming) * Solar Lighting (off-grid installations allowed) Water * Sanitary plumbing fixtures: sinks, toilets, urinals, showers * Irrigation * Leak repair * Domestic/commercial hot water heaters * Water based appliances: dishwasher, ice machine, clothes washer, etc. * Heating/Cooling system improvements (cooling towers, once through cooling, condensate reclaim) HVAC Controls Whole building control strategies including: * Time/Temperature Set-back * Demand/Night Ventilation * Advanced Controls 1 : Energy Management Control Systems (EMCS) / Building Automation Systems (BAS) HVAC Equipment Basic whole building/system one-for-one replacement

285

ESPC ENABLE: ECM Summary  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ESPC ENABLE: ECM Summary ESPC ENABLE: ECM Summary ECM Included Not Included Lighting * Lamps, Ballasts, Fixtures * Controls: Occupancy, Day lighting (on/off, dimming) * Solar Lighting (off-grid installations allowed) Water * Sanitary plumbing fixtures: sinks, toilets, urinals, showers * Irrigation * Leak repair * Domestic/commercial hot water heaters * Water based appliances: dishwasher, ice machine, clothes washer, etc. * Heating/Cooling system improvements (cooling towers, once through cooling, condensate reclaim) HVAC Controls Whole building control strategies including: * Time/Temperature Set-back * Demand/Night Ventilation * Advanced Controls 1 : Energy Management Control Systems (EMCS) / Building Automation Systems (BAS) HVAC Equipment Basic whole building/system one-for-one replacement

286

HIGH-RESOLUTION FOURIER TRANSFORM SPECTROSCOPY OF LANTHANUM IN Ar DISCHARGE IN THE NEAR-INFRARED  

SciTech Connect (OSTI)

A high-resolution spectrum of lanthanum has been recorded by a Fourier Transform spectrometer in the wavelength range from 833 nm to 1666 nm (6000 cm{sup –1} to 12,000 cm{sup –1}) using as light source a hollow cathode lamp operated with argon as the discharge carrier gas. In total, 2386 spectral lines were detected in this region, of which 555 lines could be classified as La I transitions and 10 lines as La II transitions. All La II transitions and 534 of these La I transitions were classified for the first time, and 6 of the La II transitions and 433 of the classified La I transitions appear to be new lines, which could not be found in the literature. The corresponding energy level data of classified lines are given. Additionally, 430 lines are assigned as Ar I lines and 394 as Ar II lines, of which 179 and 77, respectively, were classified for the first time. All 77 classified Ar II transitions as well as 159 of the classified Ar I transitions are new lines. Furthermore, the wavenumbers of 997 unclassified spectral lines were determined, 235 of which could be assigned as La lines, because of their hyperfine pattern. The remaining 762 lines may be either unclassified Ar lines or unresolved and unclassified La lines with only one symmetrical peak with an FWHM in the same order of magnitude as the Ar lines. The accuracy of the wavenumber for the classified lines with signal-to-noise-ratio higher than four is better than 0.006 cm{sup –1} which corresponds to an accuracy of 0.0004 nm at 830 nm and 0.0017 nm at 1660 nm, respectively.

Güzelçimen, F.; Ba?ar, Gö. [Faculty of Science, Physics Department, Istanbul University, Tr-34134 Vezneciler, Istanbul (Turkey); Tamanis, M.; Kruzins, A.; Ferber, R. [Laser Centre, The University of Latvia, Rainis Boulevard 19, LV-1586 Riga (Latvia); Windholz, L. [Institut für Experimentalphysik, Technische Universität Graz, A-8010 Graz, Petersgasse 16 (Austria); Kröger, S., E-mail: gbasar@istanbul.edu.tr, E-mail: sophie.kroeger@htw-berlin.de [Hochschule für Technik und Wirtschaft Berlin, Wilhelminenhofstr. 75A, D-12459 Berlin (Germany)

2013-10-01T23:59:59.000Z

287

Optimization of the Ni?Y Catalyst Composition in Bulk Electric Arc Synthesis of Single-Walled Carbon Nanotubes by Use of Near-Infrared Spectroscopy  

Science Journals Connector (OSTI)

Optimization of the Ni?Y Catalyst Composition in Bulk Electric Arc Synthesis of Single-Walled Carbon Nanotubes by Use of Near-Infrared Spectroscopy ... The broad window of acceptable synthetic parameters found in this study suggests that there is an opportunity to scale-up the electric arc (EA) discharge synthesis of SWNTs to the industrial level. ...

M. E. Itkis; D. E. Perea; S. Niyogi; J. Love; J. Tang; A. Yu; C. Kang; R. Jung; R. C. Haddon

2004-07-31T23:59:59.000Z

288

Chlorophyll-Derived, Cyclic Tetrapyrrole-Based Purpurins as Efficient Near-Infrared-Absorption Donor Materials for Dye-Sensitized and Organic Solar Cells  

Science Journals Connector (OSTI)

Near-infrared-absorbing chlorophyll derivatives, namely purpurin-18 methyl esters, with (c-H2P and c-ZnP) and without (H2P and ZnP) carboxyl group at the C3 position of chlorin macrocycle have been studied in eit...

Taojun Zhuang; Yuwei Wang; Xiao-Feng Wang

2014-01-01T23:59:59.000Z

289

In vivo photoacoustic imaging of chemotherapy-induced apoptosis in squamous cell carcinoma using a near-infrared caspase-9 probe  

E-Print Network [OSTI]

of surgical biopsies and secondary responses, such as morphological changes, are used to verify efficacy of a treatment. Here, we developed a novel near-infrared dye-based imaging probe to directly detect apoptosis with high specificity in cancer cells...

Yang, Qiuhong; Cui, Huizhong; Cai, Shuang; Yang, Xinmai; Forrest, Marcus Laird

2011-10-27T23:59:59.000Z

290

Chandra X-ray and Gemini near-infrared observations of the eclipsing millisecond pulsar SWIFT J1749.4-2807 in quiescence  

E-Print Network [OSTI]

We report on Chandra X-ray and Gemini-North near-infrared K-band observations of the eclipsing accretion-powered millisecond X-ray pulsar SWIFT J1749.4?2807 in quiescence. Using the Chandra observation we derive a source ...

Chakrabarty, Deepto

291

Highly uniform and reproducible visible to near-infrared vertical-cavity surface-emitting lasers grown by MOVPE  

SciTech Connect (OSTI)

The authors present the growth and characterization of vertical-cavity surface emitting lasers (VCSELs) from visible to near-infrared wavelength grown by metalorganic vapor phase epitaxy. Discussions on the growth issue of VCSEL materials include the control on growth rate and composition using an in situ normal-incidence reflectometer, optimization of ultra-high material uniformity, and comprehensive p- and n-type doping study in AlGaAs by CCl{sub 4} and Si{sub 2}H{sub 6} over the entire Al composition range. They will also demonstrate the recent achievements of selectively-oxidized VCSELs which include the first room-temperature continuous-wave demonstration of all-AlGaAs 700-nm red VCSELs, high-performance n-side up 850-nm VCSELs, and low threshold current and low-threshold voltage 1.06 {micro}m VCSELs using InGaAs/GaAsP strain-compensated quantum wells.

Hou, H.Q.; Choquette, K.D.; Hammons, B.E.; Breiland, W.G.; Crawford, M.H.; Lear, K.L. [Sandia National Labs., Albuquerque, NM (United States). Center for Compound Semiconductors Technology

1997-05-01T23:59:59.000Z

292

Ultra-Fast Fluorescence Imaging in Vivo with Conjugated Polymer Fluorophores in the Second Near-Infrared Window  

E-Print Network [OSTI]

In vivo fluorescence imaging in the second near-infrared window (1.0-1.7 microns) can afford deep tissue penetration and high spatial resolution, owing to the reduced scattering of long-wavelength photons. Here, we synthesize a series of low-bandgap donor/acceptor copolymers with tunable emission wavelengths of 1050-1350 nm in this window. Non-covalent functionalization with phospholipid-polyethylene glycol results in water-soluble and biocompatible polymeric nanoparticles, allowing for live cell molecular imaging at > 1000 nm with polymer fluorophores for the first time. Importantly, the high quantum yield of the polymer allows for in vivo, deep-tissue and ultrafast imaging of mouse arterial blood flow with an unprecedented frame rate of > 25 frames per second. The high time resolution results in spatially and time resolved imaging of the blood flow pattern in cardiogram waveform over a single cardiac cycle (~ 200 ms) of a mouse, which has not been observed with fluorescence imaging in this window before.

Hong, Guosong; Antaris, Alexander L; Diao, Shuo; Wu, Di; Cheng, Kai; Zhang, Xiaodong; Chen, Changxin; Liu, Bo; He, Yuehui; Wu, Justin Z; Yuan, Jun; Zhang, Bo; Tao, Zhimin; Fukunaga, Chihiro; Dai, Hongjie

2014-01-01T23:59:59.000Z

293

Evaluations of temperature measurements in powder-based electron beam additive manufacturing by near-infrared thermography  

Science Journals Connector (OSTI)

Powder-based electron beam additive manufacturing (EBAM) has received an increased attention from different industries for various applications. Process metrology such as part temperature measurements is essential to process model validations as well as process monitoring. However, temperature measurements in EBAM are challenging because of high temperature ranges, extreme gradients and fast transient response, etc. In this study, temperature measurements during the EBAM process were attempted using a near-infrared (NIR) thermal camera. The thermal camera was able to capture the pre-heating, contour melting, and hatch melting events. The best obtained spatial resolution is around 12 µm. Moreover, temperature data were processes and analysed to illustrate the process phenomenon, analogy to a moving heat source event. Moreover, from the extracted temperature profiles, a melting range can be identified and utilised for melt pool geometry estimates. It is shown that a typical melt pool in hatch melting from this test is about 1.91 mm long and 0.63 mm wide.

Steven Price; Kenneth Cooper; Kevin Chou

2014-01-01T23:59:59.000Z

294

Broadband three-photon near-infrared quantum cutting in Tm{sup 3+} singly doped YVO{sub 4}  

SciTech Connect (OSTI)

An efficient three-photon near-infrared (NIR) quantum cutting (QC) is reported in Tm{sup 3+} singly doped YVO{sub 4} polycrystalline phosphors, where an optimized content of Tm{sup 3+} is determined to be 1.0?mol. %. Upon the absorption of a visible photon around 473?nm, three NIR photons emitting at 1180, 1479, and 1800?nm can be obtained efficiently by the sequential three-step radiative transitions of Tm{sup 3+}. The underlying mechanisms are analyzed in terms of the steady and dynamic fluorescence spectra measurements. Internal quantum yield is calculated to be 161.8% as a theoretical value when luminescence quenching due to defect species can be overcome. In addition, the broadband ultraviolet (UV)-excited [VO{sub 4}]{sup 3?} can strongly sensitize the {sup 1}G{sub 4} level of Tm{sup 3+} in the wavelength range likely from 250 to 360?nm, greatly increasing the UV photo-response and NIR fluorescent intensity of Tm{sup 3+}. The further development of this broadband three-photon NIR QC material would explore the new route to improve the photo-response of novel photoelectronic devices, particularly in 250–360?nm.

Wang, Y. Z.; Yu, D. C.; Lin, H. H.; Ye, S.; Peng, M. Y.; Zhang, Q. Y., E-mail: qyzhang@scut.edu.cn [State Key Laboratory of Luminescence Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641 (China)

2013-11-28T23:59:59.000Z

295

Enhanced near infrared emission from the partially vitrified Nd{sup 3+} and silver co-doped zeolite Y  

SciTech Connect (OSTI)

Near infrared (NIR) emission from the Nd{sup 3+} doped zeolite Y was strongly enhanced by partially vitrifying the zeolite structure via extra loading silver ions and post annealing. Under the low annealing temperatures at 450?°C and 650?°C, the states of the loaded silver were determined to be the co-existence of the isolated Ag{sup 0} atoms, the Ag{sup +} ions, and the Ag{sub 2}{sup +} dimers. However, there was no enhancement in the NIR emission by the introduction of these small silver clusters. Under higher annealing temperature at 900?°C where the lattice of the zeolite Y was partially collapsed into the amorphous phase, strong NIR emission enhancement at 1064?nm with a factor of 6.8 was observed. The partial vitrification process by the co-loading of silver and post heat-treatment had strong effect on eliminating the H{sub 2}O molecules, which can greatly enhance the NIR emission.

Lin, Hui, E-mail: linh8112@163.com, E-mail: fujii@eedept.kobe-u.ac.jp; Chu Rong Gui, Sa; Imakita, Kenji; Fujii, Minoru, E-mail: linh8112@163.com, E-mail: fujii@eedept.kobe-u.ac.jp [Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501 (Japan)

2014-01-21T23:59:59.000Z

296

NEAR-INFRARED ADAPTIVE OPTICS IMAGING OF INFRARED LUMINOUS GALAXIES: THE BRIGHTEST CLUSTER MAGNITUDE-STAR FORMATION RATE RELATION  

SciTech Connect (OSTI)

We have established a relation between the brightest super star cluster (SSC) magnitude in a galaxy and the host star formation rate (SFR) for the first time in the near-infrared (NIR). The data come from a statistical sample of ?40 luminous IR galaxies (LIRGs) and starbursts utilizing K-band adaptive optics imaging. While expanding the observed relation to longer wavelengths, less affected by extinction effects, it also pushes to higher SFRs. The relation we find, M{sub K} ? –2.6log SFR, is similar to that derived previously in the optical and at lower SFRs. It does not, however, fit the optical relation with a single optical to NIR color conversion, suggesting systematic extinction and/or age effects. While the relation is broadly consistent with a size-of-sample explanation, we argue physical reasons for the relation are likely as well. In particular, the scatter in the relation is smaller than expected from pure random sampling strongly suggesting physical constraints. We also derive a quantifiable relation tying together cluster-internal effects and host SFR properties to possibly explain the observed brightest SSC magnitude versus SFR dependency.

Randriamanakoto, Z.; Väisänen, P. [South African Astronomical Observatory, P.O. Box 9, 7935 Observatory, Cape Town (South Africa)] [South African Astronomical Observatory, P.O. Box 9, 7935 Observatory, Cape Town (South Africa); Escala, A. [Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago (Chile)] [Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago (Chile); Kankare, E.; Kotilainen, J.; Mattila, S. [Finnish Centre for Astronomy with ESO (FINCA), University of Turku, Väisäläntie 20, FI-21500 Piikkiö (Finland)] [Finnish Centre for Astronomy with ESO (FINCA), University of Turku, Väisäläntie 20, FI-21500 Piikkiö (Finland); Ryder, S., E-mail: zara@saao.ac.za [Australian Astronomical Observatory, P.O. Box 915, North Ryde, NSW 1670 (Australia)

2013-10-01T23:59:59.000Z

297

HIGH-ALBEDO C-COMPLEX ASTEROIDS IN THE OUTER MAIN BELT: THE NEAR-INFRARED SPECTRA  

SciTech Connect (OSTI)

Primitive, outer-belt asteroids are generally of low albedo, reflecting carbonaceous compositions like those of CI and CM meteorites. However, a few outer-belt asteroids having high albedos are known, suggesting the presence of unusually reflective surface minerals or, conceivably, even exposed water ice. Here, we present near-infrared (1.1-2.5 {mu}m) spectra of four outer-belt C-complex asteroids with albedos {>=}0.1. We find no absorption features characteristic of water ice (near 1.5 and 2.0 {mu}m) in the objects. Intimate mixture models set limits to the water ice by weight {<=}2%. Asteroids (723) Hammonia and (936) Kunigunde are featureless and have (60%-95%) amorphous Mg pyroxenes that might explain the high albedos. Asteroid (1276) Ucclia also shows a featureless reflection spectrum with (50%-60%) amorphous Mg pyroxenes. Asteroid (1576) Fabiola shows a possible weak, broad absorption band (1.5-2.1 {mu}m). The feature can be reproduced by (80%) amorphous Mg pyroxenes or orthopyroxene (crystalline silicate), either of which is likely to cause its high albedo. We discuss the origin of high-albedo components in primitive asteroids.

Kasuga, Toshihiro [Public Relations Center, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Usui, Fumihiko; Hasegawa, Sunao [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210 (Japan); Ootsubo, Takafumi [Astronomical Institute, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578 (Japan); Kuroda, Daisuke, E-mail: toshi.kasuga@nao.ac.jp [Okayama Astrophysical Observatory, National Astronomical Observatory of Japan, 3037-5 Honjo, Kamogata, Asakuchi, Okayama 719-0232 (Japan)

2013-07-01T23:59:59.000Z

298

AKARI NEAR-INFRARED SPECTROSCOPIC OBSERVATIONS OF INTERSTELLAR ICES IN THE EDGE-ON STARBURST GALAXY NGC 253  

SciTech Connect (OSTI)

We present the spatially resolved near-infrared (2.5-5.0 {mu}m) spectra of the edge-on starburst galaxy NGC 253 obtained with the Infrared Camera on board AKARI. Near the center of the galaxy, we clearly detect the absorption features of interstellar ices (H{sub 2}O: 3.05 {mu}m, CO{sub 2}: 4.27 {mu}m, and XCN: 4.62 {mu}m) and the emission of polycyclic aromatic hydrocarbons (PAHs) at 3.29 {mu}m and the hydrogen recombination line Br{alpha} at 4.05 {mu}m. We find that the distributions of the ices differ from those of the PAH and gas. We calculate the column densities of the ices and derive the abundance ratios of N(CO{sub 2})/N(H{sub 2}O) = 0.17 {+-} 0.05. They are similar to those obtained around the massive young stellar objects in our Galaxy (0.17 {+-} 0.03), although a much stronger interstellar radiation field and higher dust temperature are expected near the center of NGC 253.

Yamagishi, Mitsuyoshi; Kaneda, Hidehiro; Ishihara, Daisuke; Oyabu, Shinki [Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602 (Japan); Onaka, Takashi; Shimonishi, Takashi [Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033 (Japan); Suzuki, Toyoaki, E-mail: yamagishi@u.phys.nagoya-u.ac.jp [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210 (Japan)

2011-04-10T23:59:59.000Z

299

THE COSMIC NEAR INFRARED BACKGROUND. III. FLUCTUATIONS, REIONIZATION, AND THE EFFECTS OF MINIMUM MASS AND SELF-REGULATION  

SciTech Connect (OSTI)

Current observations suggest that the universe was reionized sometime before z {approx} 6. One way to observe this epoch of the universe is through the Near Infrared Background (NIRB), which contains information about galaxies which may be too faint to be observed individually. We calculate the angular power spectrum (C{sub l} ) of the NIRB fluctuations caused by the distribution of these galaxies. Assuming a complete subtraction of any post-reionization component, C{sub l} will be dominated by galaxies responsible for completing reionization (e.g., z {approx} 6). The shape of C{sub l} at high l is sensitive to the amount of nonlinear bias of dark matter halos hosting galaxies. As the nonlinear bias depends on the mass of these halos, we can use the shape of C{sub l} to infer typical masses of dark matter halos responsible for completing reionization. We extend our previous study by using a higher-resolution N-body simulation, which can resolve halos down to 10{sup 8} M{sub Sun }. We also include improved radiative transfer, which allows for the suppression of star formation in small-mass halos due to photoionization heating. As the nonlinear bias enhances the dark matter halo power spectrum on small scales, we find that C{sub l} is steeper for the case with a complete suppression of small sources or partial suppression of star formation in small halos (the minimum galaxy mass is M{sub min} = 10{sup 9} M{sub Sun} in ionized regions and M{sub min} = 10{sup 8} M{sub Sun} in neutral regions) than for the case in which these small halos were unsuppressed. In all cases, we do not see a turnover toward high l in the shape of l{sup 2} C{sub l} .

Fernandez, Elizabeth R. [Univ Paris-Sud, Institut d'Astrophysique Spatiale, UMR8617, 91405 Orsay Cedex (France); Iliev, Ilian T. [Astronomy Centre, Department of Physics and Astronomy, Pevensey II Building, University of Sussex, Falmer, Brighton BN1 9QH (United Kingdom); Komatsu, Eiichiro; Shapiro, Paul R., E-mail: Elizabeth.Fernandez@ias.u-psud.fr [Texas Cosmology Center and the Department of Astronomy, University of Texas at Austin, 1 University Station, C1400, Austin, TX 78712 (United States)

2012-05-01T23:59:59.000Z

300

A NEAR-INFRARED TEMPLATE DERIVED FROM I Zw 1 FOR THE Fe II EMISSION IN ACTIVE GALAXIES  

SciTech Connect (OSTI)

In active galactic nucleus spectra, a series of Fe II multiplets form a pseudo-continuum that extends from the ultraviolet to the near-infrared (NIR). This emission is believed to originate in the broad-line region, and it has been known for a long time that pure photoionization fails to reproduce it in the most extreme cases, as does the collisional excitation alone. The most recent models by Sigut and Pradhan include details of the Fe II ion microphysics and cover a wide range in the ionization parameter log U{sub ion} = (- 3.0 {yields} -1.3) and density log n{sub H} = (9.6 {yields} 12.6). With the aid of such models and a spectral synthesis approach, we studied for the first time in detail the NIR emission of I Zw 1. The main goals were to confirm the role played by Ly{alpha} fluorescence mechanisms in the production of the Fe II spectrum and to construct the first semi-empirical NIR Fe II template that best represents this emission, consequently allowing its clean subtraction in other sources. A good overall match between the observed Fe II+Mg II features with those predicted by the best-fitted model was obtained, corroborating the Ly{alpha} fluorescence as a key process to understand the Fe II spectrum. The best model was fine-tuned by applying a deconvolution method to the observed Fe II+Mg II spectrum. This derived semi-empirical template was then fitted to the spectrum of Ark 564, showing that it nicely reproduced its observed Fe II+Mg II emission. Our work extends the current set of available Fe II templates into the NIR region.

Garcia-Rissmann, A.; Rodriguez-Ardila, A. [Laboratorio Nacional de Astrofisica, Rua Estados Unidos 154, 37504-364 Itajuba, MG (Brazil); Sigut, T. A. A. [University of Western Ontario, London, Ontario N6A 3K7 (Canada); Pradhan, A. K., E-mail: arissmann@lna.br [4055 McPherson Laboratory, Ohio State University, 140 W. 18th Ave., Columbus, OH 43210-1173 (United States)

2012-05-20T23:59:59.000Z

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
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301

The synthesis of inorganic semiconductor nanocrystalline materials for the purpose of creating hybrid organic/inorganic light-emitting devices  

E-Print Network [OSTI]

Colloidal semiconductor nanocrystals (NCs) or quantum dots (QDs) can be synthesized to efficiently emit light from the ultraviolet, across the entire visible spectrum, and into the near infrared. This is now possible due ...

Steckel, Jonathan S. (Jonathan Stephen)

2006-01-01T23:59:59.000Z

302

Low-cost, deterministic quasi-periodic photonic structures for light trapping in thin film silicon solar cells  

E-Print Network [OSTI]

Light trapping has been an important issue for thin film silicon solar cells because of the low absorption coefficient in the near infrared range. In this paper, we present a photonic structure which combines anodic aluminum ...

Sheng, Xing

303

Cryogenic spectroscopy of ultra-low density colloidal lead chalcogenide quantum dots on chip-scale optical cavities towards single quantum dot near-infrared cavity QED  

E-Print Network [OSTI]

We present evidence of cavity quantum electrodynamics from a sparse density of strongly quantum-confined Pb-chalcogenide nanocrystals (between 1 and 10) approaching single-dot levels on moderately high-Q mesoscopic silicon optical cavities. Operating at important near-infrared (1500-nm) wavelengths, large enhancements are observed from devices and strong modifications of the QD emission are achieved. Saturation spectroscopy of coupled QDs is observed at 77K, highlighting the modified nanocrystal dynamics for quantum information processing.

Ranojoy Bose; Jie Gao; James F. McMillan; Alex D. Williams; Chee Wei Wong

2008-12-01T23:59:59.000Z

304

SPECTRAL TYPING OF LATE-TYPE STELLAR COMPANIONS TO YOUNG STARS FROM LOW-DISPERSION NEAR-INFRARED INTEGRAL FIELD UNIT DATA  

SciTech Connect (OSTI)

We used the Project 1640 near-infrared coronagraph and integral field spectrograph to observe 19 young solar-type stars. Five of these stars are known binary stars and we detected the late-type secondaries and were able to measure their JH spectra with a resolution of R {approx} 30. The reduced, extracted, and calibrated spectra were compared to template spectra from the IRTF spectral library. With this comparison, we test the accuracy and consistency of spectral-type determination with the low-resolution near-infrared spectra from P1640. Additionally, we determine effective temperature and surface gravity of the companions by fitting synthetic spectra calculated with the PHOENIX model atmosphere code. We also present several new epochs of astrometry of each of the systems. Together, these data increase our knowledge and understanding of the stellar make up of these systems. In addition to the astronomical results, the analysis presented helps validate the Project 1640 data reduction and spectral extraction processes and the utility of low-resolution, near-infrared spectra for characterizing late-type companions in multiple systems.

Roberts, Lewis C.; Beichman, Charles A.; Burruss, Rick; Ligon, E. Robert; Lockhart, Thomas G.; Roberts, Jennifer E.; Shao, Michael [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States); Rice, Emily L.; Brenner, Douglas; Oppenheimer, Ben R. [American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024 (United States); Crepp, Justin R.; Dekany, Richard G.; Hillenbrand, Lynne A.; Hinkley, Sasha [California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125 (United States); King, David; Parry, Ian R. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 OHA (United Kingdom); Metchev, Stanimir [Department of Physics and Astronomy, State University of New York, Stony Brook, NY 11794-3800 (United States); Pueyo, Laurent; Sivaramakrishnan, Anand; Soummer, Remi, E-mail: lewis.c.roberts@jpl.nasa.gov [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); and others

2012-07-15T23:59:59.000Z

305

NEAR-INFRARED BAND STRENGTHS OF MOLECULES DILUTED IN N{sub 2} AND H{sub 2}O ICE MIXTURES RELEVANT TO INTERSTELLAR AND PLANETARY ICES  

SciTech Connect (OSTI)

The relative abundances of ices in astrophysical environments rely on accurate laboratory measurements of physical parameters, such as band strengths (or absorption intensities), determined for the molecules of interest in relevant mixtures. In an extension of our previous study on pure-ice samples, here we focus on the near-infrared absorption features of molecules in mixtures with the dominant components of interstellar and planetary ices, H{sub 2}O and N{sub 2}. We present experimentally measured near-infrared spectral information (peak positions, widths, and band strengths) for both H{sub 2}O- and N{sub 2}-dominated mixtures of CO (carbon monoxide), CO{sub 2} (carbon dioxide), CH{sub 4} (methane), and NH{sub 3} (ammonia). Band strengths were determined during sample deposition by correlating the growth of near-infrared features (10,000-4000 cm{sup -1}, 1-2.5 {mu}m) with better-known mid-infrared features (4000-400 cm{sup -1}, 2.5-25 {mu}m) at longer wavelengths.

Richey, C. R.; Gerakines, P. A., E-mail: christina.r.richey@nasa.gov, E-mail: gerak@uab.edu [Astro- and Solar-System Physics Program, Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294-1170 (United States)

2012-11-01T23:59:59.000Z

306

ESPC ENABLE Briefing  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Briefing Briefing Chip Goyette: ESPC ENABLE Program Lead 2 | Federal Energy Management Program eere.energy.gov ESPC ENABLE: Overview ESPC ENABLE is a new funding program:  Intended for Federal facilities with buildings under 200,000 square feet (traditionally, underserved market).  Or, where ESPC ENABLE presents the best or only option for the agency to fund an energy and water efficiency project  Standardized and streamlined process to quickly award projects and realize savings using GSA Schedule 84, SIN 246-53.  Targets straight-forward ECMs including lighting, water fixtures, and basic HVAC controls.  Prescribes basic levels of measurement and verification (M&V) for each ECM. 3 | Federal Energy Management Program eere.energy.gov

307

LUMINOUS AND HIGH STELLAR MASS CANDIDATE GALAXIES AT z Almost-Equal-To 8 DISCOVERED IN THE COSMIC ASSEMBLY NEAR-INFRARED DEEP EXTRAGALACTIC LEGACY SURVEY  

SciTech Connect (OSTI)

One key goal of the Hubble Space Telescope Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey is to track galaxy evolution back to z Almost-Equal-To 8. Its two-tiered ''wide and deep'' strategy bridges significant gaps in existing near-infrared surveys. Here we report on z Almost-Equal-To 8 galaxy candidates selected as F105W-band dropouts in one of its deep fields, which covers 50.1 arcmin{sup 2} to 4 ks depth in each of three near-infrared bands in the Great Observatories Origins Deep Survey southern field. Two of our candidates have J < 26.2 mag, and are >1 mag brighter than any previously known F105W-dropouts. We derive constraints on the bright end of the rest-frame ultraviolet luminosity function of galaxies at z Almost-Equal-To 8, and show that the number density of such very bright objects is higher than expected from the previous Schechter luminosity function estimates at this redshift. Another two candidates are securely detected in Spitzer Infrared Array Camera images, which are the first such individual detections at z Almost-Equal-To 8. Their derived stellar masses are on the order of a few Multiplication-Sign 10{sup 9} M{sub Sun }, from which we obtain the first measurement of the high-mass end of the galaxy stellar mass function at z Almost-Equal-To 8. The high number density of very luminous and very massive galaxies at z Almost-Equal-To 8, if real, could imply a large stellar-to-halo mass ratio and an efficient conversion of baryons to stars at such an early time.

Yan Haojing [Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211 (United States); Finkelstein, Steven L. [Department of Astronomy, University of Texas at Austin, Austin, TX 78712 (United States); Huang, Kuang-Han [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218 (United States); Ryan, Russell E.; Ferguson, Henry C.; Koekemoer, Anton M.; Grogin, Norman A. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Dickinson, Mark [National Optical Astronomy Observatory, Tucson, AZ 85719 (United States); Newman, Jeffrey A. [Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260 (United States); Somerville, Rachel S. [Physics and Astronomy Department, Rutgers University, Piscataway, NJ 08854 (United States); Dave, Romeel [Astronomy Department, University of Arizona, Tucson, AZ 85721 (United States); Faber, S. M. [University of California Observatories/Lick Observatory, University of California, Santa Cruz, CA 95064 (United States); Papovich, Casey [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A and M University, College Station, TX 77843-4242 (United States); Guo Yicheng; Giavalisco, Mauro [Department of Astronomy, University of Massachusetts, Amherst, MA 01003 (United States); Lee, Kyoung-soo [Department of Physics, Purdue University, West Lafayette, IN 47907 (United States); Reddy, Naveen; Siana, Brian D. [Department of Physics and Astronomy, University of California, Riverside, CA 92521 (United States); Cooray, Asantha R. [Department of Physics and Astronomy, University of California, Irvine, CA 92697 (United States); Hathi, Nimish P. [Observatories of the Carnegie Institution for Science, Pasadena, CA 91101 (United States); and others

2012-12-20T23:59:59.000Z

308

AKARI Observations of Brown Dwarfs. IV. Effect of Elemental Abundances to Near-Infrared Spectra between 1.0 and 5.0 {\\mu}m  

E-Print Network [OSTI]

The detection of the CO_2 absorption band at 4.2 {\\mu}m in brown dwarf spectra by AKARI has made it possible to discuss CO_2 molecular abundance in brown dwarf atmospheres. In our previous studies, we found an excess in the 4.2 {\\mu}m CO_2 absorption band of three brown dwarf spectra, and suggested that these deviations were caused by high C and O elemental abundances in their atmospheres. To validate this hypothesis we construct a set of models of brown dwarf atmospheres with various elemental abundance patterns, and investigate the variations of the molecular composition, thermal structure and their effects to the near-infrared spectra between 1.0 and 5.0 {\\mu}m. The 4.2 {\\mu}m CO_2 absorption band in some late-L and T dwarfs taken by AKARI are stronger or weaker than predictions by corresponding models with solar abundance. By comparing CO_2 band in the model spectra to the observed near-infrared spectra, we confirm possible elemental abundance variations among brown dwarfs. We find that the band strength ...

Sorahana, Satoko

2014-01-01T23:59:59.000Z

309

TESTING THE HYPOTHESIS THAT METHANOL MASER RINGS TRACE CIRCUMSTELLAR DISKS: HIGH-RESOLUTION NEAR-INFRARED AND MID-INFRARED IMAGING  

SciTech Connect (OSTI)

Milliarcsecond very long baseline interferometry maps of regions containing 6.7 GHz methanol maser emission have lead to the recent discovery of ring-like distributions of maser spots and the plausible hypothesis that they may be tracing circumstellar disks around forming high-mass stars. We aimed to test this hypothesis by imaging these regions in the near- and mid-infrared at high spatial resolution and compare the observed emission to the expected infrared morphologies as inferred from the geometries of the maser rings. In the near-infrared we used the Gemini North adaptive optics system of ALTAIR/NIRI, while in the mid-infrared we used the combination of the Gemini South instrument T-ReCS and super-resolution techniques. Resultant images had a resolution of {approx}150 mas in both the near-infrared and mid-infrared. We discuss the expected distribution of circumstellar material around young and massive accreting (proto)stars and what infrared emission geometries would be expected for the different maser ring orientations under the assumption that the masers are coming from within circumstellar disks. Based upon the observed infrared emission geometries for the four targets in our sample and the results of spectral energy distribution modeling of the massive young stellar objects associated with the maser rings, we do not find compelling evidence in support of the hypothesis that methanol masers rings reside in circumstellar disks.

De Buizer, James M. [Stratospheric Observatory for Infrared Astronomy-USRA, NASA Ames Research Center, MS N232-12, Moffett Field, CA 94035 (United States); Bartkiewicz, Anna; Szymczak, Marian, E-mail: jdebuizer@sofia.usra.edu [Torun Centre for Astronomy, Nicolaus Copernicus University, Gagarina 11, 87-100 Torun (Poland)

2012-08-01T23:59:59.000Z

310

A chemometric approach to minimise the diffusive effect of the biomass when using near infrared spectroscopic measurements for  

E-Print Network [OSTI]

effects on the NIR spectral measurements. The process monitored is a batch anaerobic production of bio-hydrogen by Clostridii bacteria leads to the production of hydrogen and volatile fatty acids Author-produced version 11th scattering effect, bio-hydrogen. Abstract This article focuses the problem of the light absorption

Boyer, Edmond

311

Tunable Localized Surface Plasmon-Enabled Broadband Light-Harvesting Enhancement for High-Efficiency Panchromatic Dye-Sensitized Solar Cells  

E-Print Network [OSTI]

In photovoltaic devices, light harvesting (LH) and carrier collection have opposite relations with the thickness of the photoactive layer, which imposes a fundamental compromise for the power conversion efficiency (PCE). ...

Dang, Xiangnan

312

Near-Infrared [Fe II] and H2 Line Observations of the Supernova Remnant 3C 396: Probing the Pre-supernova Circumstellar Materials  

E-Print Network [OSTI]

We present the results of near-infrared [Fe II] and H2 line imaging and spectroscopic observations of the supernova remnant 3C 396 using the Palomar 5 m Hale telescope. We detect long, filamentary [Fe II] emission delineating the inner edge of the radio emission in the western boundary of the remnant in imaging observations, together with a bright [Fe II] emission clump close to the remnant center. There appears to be faint, diffuse [Fe II] emission between the central clump and the western filamentary emission. The spectroscopic observations determine the expansion velocity of the central clump to be ~56 km/s. This is far smaller than the expansion velocity of 3C 396 obtained from X-ray observations, implying the inhomogeneity of the ambient medium. The electron number density of the [Fe II] emission gas is < 2,000 cm-3. The H2 line emission, on the other hand, lies slightly outside the filamentary [Fe II] emission in the western boundary, and forms a rather straight filament. We suggest that the [Fe II] emission represents dense clumps in the wind material from the red supergiant phase of a Type IIL/b progenitor of 3C 396 which have been swept up by the supernova remnant shocks. The H2 emission may represent either the boundary of a wind bubble produced during the main-sequence phase of the progenitor or molecular clumps left over inside the bubble. We propose that the near-infrared [Fe II] and H2 emission observed in several supernova remnants of Type IIL/b SNe likely has the same origin.

Ho-Gyu Lee; Dae-Sik Moon; Bon-Chul Koo; Jae-Joon Lee; Keith Matthews

2008-10-05T23:59:59.000Z

313

NEAR-INFRARED SPECTROSCOPY OF INFRARED-EXCESS STELLAR OBJECTS IN THE YOUNG SUPERNOVA REMNANT G54.1+0.3  

SciTech Connect (OSTI)

We present the results of broadband near-infrared spectroscopic observations of the recently discovered mysterious stellar objects in the young supernova remnant G54.1+0.3. These objects, which show significant mid-infrared-excess emission, are embedded in a diffuse loop structure of {approx}1' in radius. Their near-infrared spectra reveal characteristics of late O- or early B-type stars with numerous H and He I absorption lines, and we classify their spectral types to be between O9 and B2 based on an empirical relation derived here between the equivalent widths of the H lines and stellar photospheric temperatures. The spectral types, combined with the results of spectral energy distribution fits, constrain the distance to the objects to be 6.0 {+-} 0.4 kpc. The photometric spectral types of the objects are consistent with those from the spectroscopic analyses, and the extinction distributions indicate a local enhancement of matter in the western part of the loop. If these objects originate via triggered formation by the progenitor star of G54.1+0.3, then their formations likely began during the later evolutionary stages of the progenitor, although a rather earlier formation may still be possible. If the objects and the progenitor belong to the same cluster of stars, then our results constrain the progenitor mass of G54.1+0.3 to be between 18 and {approx}35 M{sub Sun} and suggest that G54.1+0.3 was either a Type IIP supernova or, with a relatively lower possibility, Type Ib/c from a binary system.

Kim, Hyun-Jeong; Koo, Bon-Chul [Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of); Moon, Dae-Sik, E-mail: hjkim@astro.snu.ac.kr, E-mail: koo@astro.snu.ac.kr, E-mail: moon@astro.utoronto.ca [Department of Astronomy and Astrophysics, University of Toronto, Toronto, ON M5S 3H4 (Canada)

2013-09-01T23:59:59.000Z

314

NEAR-INFRARED IMAGING OF A z = 6.42 QUASAR HOST GALAXY WITH THE HUBBLE SPACE TELESCOPE WIDE FIELD CAMERA 3  

SciTech Connect (OSTI)

We report on deep near-infrared F125W (J) and F160W (H) Hubble Space Telescope Wide Field Camera 3 images of the z = 6.42 quasar J1148+5251 to attempt to detect rest-frame near-ultraviolet emission from the host galaxy. These observations included contemporaneous observations of a nearby star of similar near-infrared colors to measure temporal variations in the telescope and instrument point-spread function (PSF). We subtract the quasar point source using both this direct PSF and a model PSF. Using direct subtraction, we measure an upper limit for the quasar host galaxy of m{sub J} > 22.8 and m{sub H} > 23.0 AB mag (2 {sigma}). After subtracting our best model PSF, we measure a limiting surface brightness from 0.''3 to 0.''5 radius of {mu}{sub J} > 23.5 and {mu}{sub H} > 23.7 AB mag arcsec{sup -2} (2 {sigma}). We test the ability of the model subtraction method to recover the host galaxy flux by simulating host galaxies with varying integrated magnitude, effective radius, and Sersic index, and conducting the same analysis. These models indicate that the surface brightness limit ({mu}{sub J} > 23.5 AB mag arcsec{sup -2}) corresponds to an integrated upper limit of m{sub J} > 22-23 AB mag, consistent with the direct subtraction method. Combined with existing far-infrared observations, this gives an infrared excess log (IRX) > 1.0 and corresponding ultraviolet spectral slope {beta} > -1.2 {+-} 0.2. These values match those of most local luminous infrared galaxies, but are redder than those of almost all local star-forming galaxies and z {approx_equal} 6 Lyman break galaxies.

Mechtley, M.; Windhorst, R. A.; Cohen, S. H.; Jansen, R. A.; Scannapieco, E. [School of Earth and Space Exploration, Arizona State University, P.O. Box 871404, Tempe, AZ 85287 (United States); Ryan, R. E.; Koekemoer, A. M. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Schneider, G.; Fan, X. [Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States); Hathi, N. P. [Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Keel, W. C. [Department of Physics and Astronomy, University of Alabama, Box 870324, Tuscaloosa, AL 35487 (United States); Roettgering, H. [Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA, Leiden (Netherlands); Schneider, D. P. [Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802 (United States); Strauss, M. A. [Princeton University Observatory, Princeton, NJ 08544 (United States); Yan, H. J. [Department of Physics and Astronomy, The University of Missouri, 701 South College Ave, Columbia, MO 65211 (United States)

2012-09-10T23:59:59.000Z

315

THE TAIWAN ECDFS NEAR-INFRARED SURVEY: ULTRA-DEEP J AND K{sub S} IMAGING IN THE EXTENDED CHANDRA DEEP FIELD-SOUTH  

SciTech Connect (OSTI)

We present ultra-deep J and K{sub S} imaging observations covering a 30' Multiplication-Sign 30' area of the Extended Chandra Deep Field-South (ECDFS) carried out by our Taiwan ECDFS Near-Infrared Survey (TENIS). The median 5{sigma} limiting magnitudes for all detected objects in the ECDFS reach 24.5 and 23.9 mag (AB) for J and K{sub S} , respectively. In the inner 400 arcmin{sup 2} region where the sensitivity is more uniform, objects as faint as 25.6 and 25.0 mag are detected at 5{sigma}. Thus, this is by far the deepest J and K{sub S} data sets available for the ECDFS. To combine TENIS with the Spitzer IRAC data for obtaining better spectral energy distributions of high-redshift objects, we developed a novel deconvolution technique (IRACLEAN) to accurately estimate the IRAC fluxes. IRACLEAN can minimize the effect of blending in the IRAC images caused by the large point-spread functions and reduce the confusion noise. We applied IRACLEAN to the images from the Spitzer IRAC/MUSYC Public Legacy in the ECDFS survey (SIMPLE) and generated a J+K{sub S} -selected multi-wavelength catalog including the photometry of both the TENIS near-infrared and the SIMPLE IRAC data. We publicly release the data products derived from this work, including the J and K{sub S} images and the J+K{sub S} -selected multi-wavelength catalog.

Hsieh, Bau-Ching; Wang, Wei-Hao; Hsieh, Chih-Chiang; Lin, Lihwai; Lim, Jeremy; Ho, Paul T. P. [Institute of Astrophysics and Astronomy, Academia Sinica, P.O. Box 23-141, Taipei 106, Taiwan (China); Yan Haojing [Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211 (United States)

2012-12-15T23:59:59.000Z

316

NEAR-INFRARED H{sub 2} AND CONTINUUM SURVEY OF EXTENDED GREEN OBJECTS. II. COMPLETE CENSUS FOR THE NORTHERN GALACTIC PLANE  

SciTech Connect (OSTI)

We discuss 94 Extended Green Objects (EGOs) in the northern Galactic plane cataloged by Cyganowski et al., based on near-infrared narrow H{sub 2} (2.122 ?m) and continuum observations from the United Kingdom Infrared Telescope. This data set is three times larger than the one in our previous study and is unbiased by preselection. As discussed in the previous paper, the morphologies of the 4.5 ?m emission generally resemble those of the near-infrared continuum, but are different from those of the H{sub 2} emission. Of our sample, only 28% of EGOs with H{sub 2} emission show similar morphologies between 4.5 ?m and H{sub 2} emission. These results suggest that the 4.5 ?m emission mainly comes from scattered continuum from the embedded young stellar objects, and partially from H{sub 2} emission. About half of EGOs are associated with H{sub 2} outflows, if the H{sub 2} outflow incompleteness is considered. The H{sub 2} outflow detection rate for EGOs with K-band detections (61%) is significantly higher than for those without K-band detections (36%). This difference may be due to the fact that both H{sub 2} and K-band emissions are associated with outflows, i.e., H{sub 2} emission and K-band continuum are associated with shocks and outflow cavities, respectively. We also compared the correlation between the H{sub 2} outflows and Class I 44 GHz methanol masers from the literature. The methanol masers can be located upstream or downstream of the H{sub 2} outflows and some bright H{sub 2} spots or outflows are not associated with methanol masers, suggesting that methanol masers and H{sub 2} emission trace different excitation conditions.

Lee, Hsu-Tai; Karr, Jennifer; Su, Yu-Nung; Liu, Sheng-Yuan; Takami, Michihiro [Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei 106, Taiwan (China); Liao, Wei-Ting [Department of Mechanical Engineering, National Taiwan University, 1 Roosevelt Rd., Section 4, Taipei 10617, Taiwan (China); Froebrich, Dirk; Ioannidis, Georgios [Centre for Astrophysics and Planetary Science, University of Kent, Canterbury CT2 7NH (United Kingdom); Lee, Yong-Hyun [Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of); Duan, Hao-Yuan, E-mail: htlee@illinois.edu [Institute of Astronomy and Department of Physics, National Tsing-Hua University, Hsinchu 30013, Taiwan (China)

2013-10-01T23:59:59.000Z

317

Electrical Control of Optical Emitter Relaxation Pathways enabled by Graphene  

E-Print Network [OSTI]

Controlling the energy flow processes and the associated energy relaxation rates of a light emitter is of high fundamental interest, and has many applications in the fields of quantum optics, photovoltaics, photodetection, biosensing and light emission. While advanced dielectric and metallic systems have been developed to tailor the interaction between an emitter and its environment, active control of the energy flow has remained challenging. Here, we demonstrate in-situ electrical control of the relaxation pathways of excited erbium ions, which emit light at the technologically relevant telecommunication wavelength of 1.5 $\\mu$m. By placing the erbium at a few nanometres distance from graphene, we modify the relaxation rate by more than a factor of three, and control whether the emitter decays into either electron-hole pairs, emitted photons or graphene near-infrared plasmons, confined to $<$15 nm to the sheet. These capabilities to dictate optical energy transfer processes through electrical control of t...

Tielrooij, K J; Ferrier, A; Badioli, M; Navickaite, G; Coop, S; Nanot, S; Kalinic, B; Cesca, T; Gaudreau, L; Ma, Q; Centeno, A; Pesquera, A; Zurutuza, A; de Riedmatten, H; Goldner, P; de Abajo, F J García; Jarillo-Herrero, P; Koppens, F H L

2014-01-01T23:59:59.000Z

318

SPIRou: the near-infrared spectropolarimeter/high-precision velocimeter for the Canada-France-Hawaii telescope  

E-Print Network [OSTI]

SPIRou is a near-IR \\'echelle spectropolarimeter and high-precision velocimeter under construction as a next-generation instrument for the Canada-France-Hawaii-Telescope. It is designed to cover a very wide simultaneous near-IR spectral range (0.98-2.35 {\\mu}m) at a resolving power of 73.5K, providing unpolarized and polarized spectra of low-mass stars at a radial velocity (RV) precision of 1m/s. The main science goals of SPIRou are the detection of habitable super-Earths around low-mass stars and the study of how critically magnetic fields impact star / planet formation. Following a successful final design review in Spring 2014, SPIRou is now under construction and is scheduled to see first light in late 2017. We present an overview of key aspects of SPIRou's optical and mechanical design.

Artigau, Étienne; Donati, Jean-François; Doyon, René; Delfosse, Xavier; Baratchart, Sébastien; Lacombe, Marielle; Moutou, Claire; Rabou, Patrick; Parès, Laurent P; Micheau, Yoan; Thibault, Simon; Reshetov, Vladimir A; Dubois, Bruno; Hernandez, Olivier; Vallée, Philippe; Wang, Shiang-Yu; Dolon, François; Pepe, Francesco A; Bouchy, François; Striebig, Nicolas; Hénault, François; Loop, David; Saddlemyer, Leslie; Barrick, Gregory; Vermeulen, Tom; Dupieux, Michel; Hébrard, Guillaume; Boisse, Isabelle; Martioli, Eder; Alencar, Silvia H P; Nascimento, José-Diaz do; Figueira, Pedro

2014-01-01T23:59:59.000Z

319

Sub-cycle Oscillations in Virtual States Brought to Light  

E-Print Network [OSTI]

atoms in the presence of a delayed, few-cycle near infrared (NIR) laser pulse, which uncovers absorption of a material is its absorption of light. Spectrally-resolved absorption has long been used to study atomic of and demonstrating control over the electron dynamics in the atom on ultrafast timescales. Laser-dressed absorption

Van Stryland, Eric

320

Multicolor visible light upconversion emission in Tm3+–Er3+ codoped TeO2–PbO glass under near-infrared laser radiation  

Science Journals Connector (OSTI)

The multicolor intense visible emission from Er3+ and Tm3+ ions codoped in TeO2–PbO glass upon excitation at ?1064??nm...

Rai, Vineet Kumar; Mishra, Pankaj

2014-01-01T23:59:59.000Z

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321

HIGH-RESOLUTION NEAR-INFRARED SPECTROSCOPY OF HD 100546. I. ANALYSIS OF ASYMMETRIC RO-VIBRATIONAL OH EMISSION LINES  

SciTech Connect (OSTI)

We present observations of ro-vibrational OH and CO emission from the Herbig Be star HD 100546. The emission from both molecules arises from the inner region of the disk extending from approximately 13 AU from the central star. The velocity profiles of the OH lines are narrower than the velocity profile of the [O I] {lambda}6300 line, indicating that the OH in the disk is not cospatial with the O I. This suggests that the inner optically thin region of the disk is largely devoid of molecular gas. Unlike the ro-vibrational CO emission lines, the OH lines are highly asymmetric. We show that the average CO and average OH line profiles can be fit with a model of a disk comprised of an eccentric inner wall and a circular outer disk. In this model, the vast majority of the OH flux (75%) originates from the inner wall, while the vast majority of the CO flux (65%) originates on the surface of the disk at radii greater than 13 AU. Eccentric inner disks are predicted by hydrodynamic simulations of circumstellar disks containing an embedded giant planet. We discuss the implications of such a disk geometry in light of models of planet-disk tidal interactions and propose alternative explanations for the origin of the asymmetry.

Liskowsky, Joseph P.; Brittain, Sean D. [Department of Physics and Astronomy, 118 Kinard Laboratory, Clemson University, Clemson, SC 29634 (United States); Najita, Joan R. [National Optical Astronomy Observatory, 950 N. Cherry Ave., Tucson, AZ 85719 (United States); Carr, John S. [Naval Research Laboratory, Code 7211, Washington, DC 20375 (United States); Doppmann, Greg W. [W. M. Keck Observatory, 65-1120 Mamalahoa Hwy, Kamuela, HI 96743 (United States); Troutman, Matthew R., E-mail: sbritt@clemson.edu, E-mail: najita@noao.edu, E-mail: carr@nrl.navy.mil, E-mail: gdoppmann@keck.hawaii.edu, E-mail: troutmanm@umsl.edu [Department of Physics and Astronomy, University of Missouri-St. Louis, St. Louis, MO 63121 (United States)

2012-12-01T23:59:59.000Z

322

On-line near infrared spectroscopy as a Process Analytical Technology (PAT) tool to control an industrial seeded API crystallization  

Science Journals Connector (OSTI)

Abstract The final step of an active pharmaceutical ingredient (API) manufacturing synthesis process consists of a crystallization during which the API and residual solvent contents have to be quantified precisely in order to reach a predefined seeding point. A feasibility study was conducted to demonstrate the suitability of on-line NIR spectroscopy to control this step in line with new version of the European Medicines Agency (EMA) guideline [1]. A quantitative method was developed at laboratory scale using statistical design of experiments (DOE) and multivariate data analysis such as principal component analysis (PCA) and partial least squares (PLS) regression. NIR models were built to quantify the API in the range of 9–12% (w/w) and to quantify the residual methanol in the range of 0–3% (w/w). To improve the predictive ability of the models, the development procedure encompassed: outliers elimination, optimum model rank definition, spectral range and spectral pre-treatment selection. Conventional criteria such as, number of PLS factors, R2, root mean square errors of calibration, cross-validation and prediction (RMSEC, RMSECV, RMSEP) enabled the selection of three model candidates. These models were tested in the industrial pilot plant during three technical campaigns. Results of the most suitable models were evaluated against to the chromatographic reference methods. Maximum relative bias of 2.88% was obtained about API target content. Absolute bias of 0.01 and 0.02% (w/w) respectively were achieved at methanol content levels of 0.10 and 0.13% (w/w). The repeatability was assessed as sufficient for the on-line monitoring of the 2 analytes. The present feasibility study confirmed the possibility to use on-line NIR spectroscopy as a PAT tool to monitor in real-time both the API and the residual methanol contents, in order to control the seeding of an API crystallization at industrial scale. Furthermore, the successful scale-up of the method proved its capability to be implemented in the manufacturing plant with the launch of the new API process.

C. Schaefer; C. Lecomte; D. Clicq; A. Merschaert; E. Norrant; F. Fotiadu

2013-01-01T23:59:59.000Z

323

Lighting  

SciTech Connect (OSTI)

The lighting section of ASHRAE standard 90.1 is discussed. It applies to all new buildings except low-rise residential, while excluding specialty lighting applications such as signage, art exhibits, theatrical productions, medical and dental tasks, and others. In addition, lighting for indoor plant growth is excluded if designed to operate only between 10 p.m. and 6 a.m. Lighting allowances for the interior of a building are determined by the use of the system performance path unless the space functions are not fully known, such as during the initial stages of design or for speculative buildings. In such cases, the prescriptive path is available. Lighting allowances for the exterior of all buildings are determined by a table of unit power allowances. A new addition the exterior lighting procedure is the inclusion of facade lighting. However, it is no longer possible to trade-off power allotted for the exterior with the interior of a building or vice versa. A significant change is the new emphasis on lighting controls.

McKay, H.N. (Hayden McKay Lighting Design, New York, NY (US))

1990-02-01T23:59:59.000Z

324

Near-Infrared [Fe II] and H2 Line Observations of the Supernova Remnant 3C 396: Probing the Pre-supernova Circumstellar Materials  

E-Print Network [OSTI]

We present the results of near-infrared [Fe II] and H2 line imaging and spectroscopic observations of the supernova remnant 3C 396 using the Palomar 5 m Hale telescope. We detect long, filamentary [Fe II] emission delineating the inner edge of the radio emission in the western boundary of the remnant in imaging observations, together with a bright [Fe II] emission clump close to the remnant center. There appears to be faint, diffuse [Fe II] emission between the central clump and the western filamentary emission. The spectroscopic observations determine the expansion velocity of the central clump to be ~56 km/s. This is far smaller than the expansion velocity of 3C 396 obtained from X-ray observations, implying the inhomogeneity of the ambient medium. The electron number density of the [Fe II] emission gas is < 2,000 cm-3. The H2 line emission, on the other hand, lies slightly outside the filamentary [Fe II] emission in the western boundary, and forms a rather straight filament. We suggest that the [Fe II] ...

Lee, Ho-Gyu; Koo, Bon-Chul; Lee, Jae-Joon; Matthews, Keith

2008-01-01T23:59:59.000Z

325

THE ARAUCARIA PROJECT. A DISTANCE DETERMINATION TO THE LOCAL GROUP SPIRAL M33 FROM NEAR-INFRARED PHOTOMETRY OF CEPHEID VARIABLES  

SciTech Connect (OSTI)

Motivated by an amazing range of reported distances to the nearby Local Group spiral galaxy M33, we have obtained deep near-infrared photometry for 26 long-period Cepheids in this galaxy with the ESO Very Large Telescope. From the data, we constructed period-luminosity relations in the J and K bands which together with previous optical VI photometry for the Cepheids by Macri et al. were used to determine the true distance modulus of M33, and the mean reddening affecting the Cepheid sample with the multiwavelength fit method developed in the Araucaria Project. We find a true distance modulus of 24.62 for M33, with a total uncertainty of {+-}0.07 mag which is dominated by the uncertainty on the photometric zero points in our photometry. The reddening is determined as E(B - V) = 0.19 {+-} 0.02, in agreement with the value used by the Hubble Space Telescope Key Project of Freedman et al. but in some discrepancy with other recent determinations based on blue supergiant spectroscopy and an O-type eclipsing binary which yielded lower reddening values. Our derived M33 distance modulus is extremely insensitive to the adopted reddening law. We show that the possible effects of metallicity and crowding on our present distance determination are both at the 1%-2% level and therefore minor contributors to the total uncertainty of our distance result for M33.

Gieren, Wolfgang; Pietrzynski, Grzegorz; Graczyk, Dariusz, E-mail: wgieren@astro-udec.cl, E-mail: pietrzyn@hubble.cfm.udec.cl [Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw (Poland); and others

2013-08-10T23:59:59.000Z

326

NEAR-INFRARED PERIODIC AND OTHER VARIABLE FIELD STARS IN THE FIELD OF THE CYGNUS OB7 STAR-FORMING REGION  

SciTech Connect (OSTI)

We present a subset of the results of a three-season, 124 night, near-infrared monitoring campaign of the dark clouds Lynds 1003 and Lynds 1004 in the Cygnus OB7 star-forming region. In this paper, we focus on the field star population. Using three seasons of UKIRT J, H, and K-band observations spanning 1.5 years, we obtained high-quality photometry on 9200 stars down to J = 17 mag, with photometric uncertainty better than 0.04 mag. After excluding known disk-bearing stars we identify 149 variables-1.6% of the sample. Of these, about 60 are strictly periodic, with periods predominantly <2 days. We conclude this group is dominated by eclipsing binaries. A few stars have long period signals of between 20 and 60 days. About 25 stars have weak modulated signals, but it was not clear if these were periodic. Some of the stars in this group may be diskless young stellar objects with relatively large variability due to cool starspots. The remaining {approx}60 stars showed variations which appear to be purely stochastic.

Wolk, Scott J.; Rice, Thomas S. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Aspin, Colin A. [Institute for Astronomy, University of Hawaii at Manoa, 640 North Aohoku Place, Hilo, HI 96720 (United States)

2013-04-15T23:59:59.000Z

327

DENSE OPTICAL AND NEAR-INFRARED MONITORING OF CTA 102 DURING HIGH STATE IN 2012 WITH OISTER: DETECTION OF INTRA-NIGHT ''ORPHAN POLARIZED FLUX FLARE''  

SciTech Connect (OSTI)

CTA 102, classified as a flat spectrum radio quasar at z = 1.037, produced an exceptionally bright optical flare in 2012 September. Following the Fermi Large Area Telescope detection of enhanced {gamma}-ray activity, we closely monitored this source in the optical and near-infrared bands for the 10 subsequent nights using 12 telescopes in Japan and South Africa. On MJD 56197 (2012 September 27, four to five days after the peak of bright {gamma}-ray flare), polarized flux showed a transient increase, while total flux and polarization angle (PA) remained almost constant during the ''orphan polarized-flux flare.'' We also detected an intra-night and prominent flare on MJD 56202. The total and polarized fluxes showed quite similar temporal variations, but the PA again remained constant during the flare. Interestingly, the PAs during the two flares were significantly different from the jet direction. The emergence of a new emission component with a high polarization degree (PD) up to 40% would be responsible for the observed two flares, and such a high PD indicates the presence of a highly ordered magnetic field at the emission site. We argue that the well-ordered magnetic field and even the observed directions of the PA, which is grossly perpendicular to the jet, are reasonably accounted for by transverse shock(s) propagating down the jet.

Itoh, Ryosuke; Fukazawa, Yasushi; Tanaka, Yasuyuki T. [Department of Physical Sciences, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Abe, Yuhei [Department of Cosmosciences, Graduate School of Science, Hokkaido University, Kita-ku, Sapporo 060-0810 (Japan); Akitaya, Hiroshi; Kawabata, Koji S.; Moritani, Yuki [Hiroshima Astrophysical Science Center, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Arai, Akira [Nishi-Harima Astronomical Observatory, Center for Astronomy, University of Hyogo, 407-2 Nishigaichi, Sayo-cho, Sayo, Hyogo 679-5313 (Japan); Hayashi, Masahiko [National Astronomical Observatory of Japan, Osawa 2-21-2, Mitaka, Tokyo 181-8588 (Japan); Hori, Takafumi; Nakata, Chikako [Department of Astronomy, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan); Isogai, Mizuki [Koyama Astronomical Observatory, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-Ku, Kyoto-City 603-8555 (Japan); Izumiura, Hideyuki; Kuroda, Daisuke [Okayama Astrophysical Observatory, National Astronomical Observatory of Japan, Honjo 3037-5, Kamogata, Asakuchi, Okayama 719-0232 (Japan); Kawai, Nobuyuki [Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551 (Japan); Miyanoshita, Ryo [Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065 (Japan); Morokuma, Tomoki [Institute of Astronomy, Graduate School of Science, The University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015 (Japan); Nagayama, Takahiro [Department of Astrophysics, Nagoya University, Chikusa-ku, Nagoya 464-8602 (Japan); Nakamoto, Jumpei [Department of Earth and Planetary Sciences, School of Science, Hokkaido University, Kita-ku, Sapporo 060-0810 (Japan); Oasa, Yumiko, E-mail: itoh@hep01.hepl.hiroshima-u.ac.jp [Faculty of Education, Saitama University, 255 Shimo-Okubo, Sakura, Saitama, 338-8570 (Japan); and others

2013-05-10T23:59:59.000Z

328

The ARAUCARIA project: Deep near-infrared survey of nearby galaxies. I. The distance to the Large Magellanic Cloud from K-band photometry of red clump stars  

E-Print Network [OSTI]

We have obtained deep imaging in the near-infrared J and K bands for 2 nearby fields in the bar of the LMC with the ESO NTT telescope, under exquisite seeing conditions. The K, J-K color-magnitude diagrams constructed from these data are of outstanding photometric quality and reveal the presence of several hundreds of red clump stars. Using the calibration of Alves for the K-band absolute magnitude of Hipparcos-observed red clump stars in the solar neigbourhood we derive a distance modulus to our observed LMC fields of 18.487 mag. Applying a correction for the tilt of the LMC bar with respect to the line of sight according to the geometrical model of van der Marel et al., the corresponding LMC barycenter distance is 18.501 mag. If we adopt a K-band population correction of -0.03 mag, as done by Alves et al. 2002, to account for the difference in age and metallicity between the solar neighborhood and LMC red clump star populations, we obtain an LMC barycenter distance modulus of 18.471 mag from our data. This is in excellent agreement with the result of Alves et al., and of another very recent study of Sarajedini et al. (2002) obtained from K-band photometry. However, we emphasize that current model predictions about the uncertainties of population corrections seem to indicate that errors up to about 0.12 mag may be possible, probably in any photometric band. Therefore, work must continue to tighten the constraints on these corrections. We also determine the mean red clump star magnitude in our LMC fields in the J band, which could be a useful alternative to the K band should future work reveal that population effect corrections for red clump stars in the J band are smaller, or more reliably determined than those for the K band.

G. Pietrzynski; W. Gieren

2002-08-07T23:59:59.000Z

329

Nuclear Energy Enabling Technologies | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Enabling Technologies Enabling Technologies Nuclear Energy Enabling Technologies Nuclear Energy Enabling Technologies The Nuclear Energy Enabling Technologies (NEET) Program will develop crosscutting technologies that directly support and complement the Department of Energy, Office of Nuclear Energy's (DOE-NE) advanced reactor and fuel cycle concepts, focusing on innovative research that offers the promise of dramatically improved performance. NEET will coordinate research efforts on common issues and challenges that confront the DOE-NE R&D programs (Light Water Reactor Sustainability [LWRS], Next Generation Nuclear Plant [NGNP], Advanced Reactor Technologies [ART], and Small Modular Reactors [SMR]) to advance technology development and deployment. The activities undertaken in the NEET program will

330

Light  

Science Journals Connector (OSTI)

Sunlight contains energy which can be directly converted into electricity in solar cells of various types. This is an example of what is called 'direct conversion', involving no moving parts or heat conversion processes. This chapter looks at photovoltaic and photoelectric devices and also at other ideas for using light energy, some of which operate in the infrared part of the spectrum. Solar electric power is a rapidly developing field, opening up many opportunities for novel applications, as well as requirements, including for storage, with one idea being solar-powered hydrogen production and then direct conversion to electricity in fuel cells. Direct conversion is not always efficient, and this chapter introduces the concept of 'energy return on energy invested'. In speculative mood this chapter also looks at the idea of a global grid, allowing daytime solar generation to be used on the night side of the planet.

David Elliott ? Pages 4-1 to 4-20

331

ESPC ENABLE Briefing  

Broader source: Energy.gov (indexed) [DOE]

ESPC ENABLE presents the best or only option for the agency to fund an energy and water efficiency project Standardized and streamlined process to quickly award projects and...

332

A NEW SYNTHETIC LIBRARY OF THE NEAR-INFRARED Ca II TRIPLET INDICES. I. INDEX DEFINITION, CALIBRATION, AND RELATIONS WITH STELLAR ATMOSPHERIC PARAMETERS  

SciTech Connect (OSTI)

Adopting the SPECTRUM package, which is a stellar spectral synthesis program, we have synthesized a comprehensive set of 2890 near-infrared (NIR) synthetic spectra with a resolution and wavelength sampling similar to the Sloan Digital Sky Survey (SDSS) and the forthcoming Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spectra. During the synthesis, we applied the 'New grids of ATLAS9 Model Atmosphere' to develop a grid of local thermodynamic equilibrium model atmospheres for effective temperatures (T{sub eff}) ranging from 3500 to 7500 K, for surface gravities (log g) from 0.5 to 5.0 dex, for metallicities ([Fe/H]) from -4.0 to 0.5 dex, and for solar ([{alpha}/Fe] = 0.0 dex) and non-solar ([{alpha}/Fe] = +0.4 dex) abundances. This synthetic stellar library is composed of 1350 solar scaled abundance (SSA) and 1530 non-solar scaled abundance (NSSA) spectra, grounding on which we have defined a new set of NIR Ca II triplet indices and an index CaT as the sum of the three. These defined indices were automatically measured on every spectrum of the synthetic stellar library and calibrated with the indices computed on the observational spectra from the INDO-U.S. stellar library. In order to check the effect of {alpha}-element enhancement on the so-defined Ca II indices, we compared indices measured on the SSA spectra with those on the NSSA ones at the same trine of stellar parameters (T{sub eff}, log g, [Fe/H]); luckily, little influences of {alpha}-element enhancement were found. Furthermore, comparisons of our synthetic indices with the observational ones from measurements on the INDO-U.S. stellar library, the SDSS-DR7 and SDSS-DR8 spectroscopic survey are presented, respectively, for dwarfs and giants in specific. For dwarfs, our synthetic indices could well reproduce the behaviors of the observational indices versus stellar parameters, which verifies the validity of our index definitions for dwarfs. For giants, the consistency between our synthetic indices and the observational ones does not appear to be as good. However, a new synthetic library of NIR Ca II indices has been founded for deeper studies on the NIR wave band of stellar spectra, and this library is particularly appropriate for the SDSS and the forthcoming LAMOST stellar spectra. We have regressed the strength of the CaT index as a function of stellar parameters for both dwarfs and giants after a series of experimental investigations into relations of the indices with stellar parameters. For dwarfs, log g has little effect on the indices, while [Fe/H] and T{sub eff} play a role together. The leading factor is probably [Fe/H], which changes the strength of the indices by a positive trend. For giants, log g starts to influence the strength of the indices by a negative trend for the metal-poor, and even impact deeply for the metal-rich; besides, [Fe/H] and T{sub eff} still matter. In addition, we briefly discussed the major differences between our Ca II triplet indices and the CaHK doublet indices. Ultimately, a supplemental experiment was carried out to show that spectral noises do have effects on our set of NIR Ca II indices. However, the influence is not weak enough to be ignored if the signal-to-noise ratio falls below 20.

Du, W.; Luo, A. L.; Zhao, Y. H., E-mail: wdu@nao.cas.cn, E-mail: lal@nao.cas.cn [National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)

2012-02-15T23:59:59.000Z

333

How to enable Javascript  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Help: How to enable JavaScript Help: How to enable JavaScript Internet Explorer 6 or 7 Click the Tools menu. Select Internet Options. Click the Security tab. Click the Custom Level button. Scroll down until you see the 'Scripting' section. Select the 'Enable' radio button for 'Active Scripting.' Click the OK button. Click the Yes button in the confirmation window. Go Back to return to the previous page, and then click Refresh to reload the page. Firefox 2 or 3 Click the Tools menu. Select Options. Click the Contents tab. Select the 'Enable JavaScript' checkbox. Click the OK button. Go Back to return to the previous page, and then click Reload to run the script on the page Safari 2 or 3 Click the Safari menu. Select Preferences. Click the Security tab. Select the 'Enable JavaScript' checkbox. Go Back to return to the previous page, and then click Reload to run

334

Real-time Monitoring of In Vivo Acute Necrotic Cancer Cell Death Induced by Near Infrared Photoimmunotherapy Using Fluorescence Lifetime Imaging  

Science Journals Connector (OSTI)

...microscope, coupled to a flexible fiber optic imaging probe, 1 mm in diameter (Fig. 2A). Blue light provided by a light-emitting diode (LED) at a wavelength of 455 nm is delivered from the HRME unit, through the fiber optic probe, to the tissue...

Takahito Nakajima; Kohei Sano; Makoto Mitsunaga; Peter L. Choyke; Hisataka Kobayashi

2012-09-15T23:59:59.000Z

335

Real-time Monitoring of In Vivo Acute Necrotic Cancer Cell Death Induced by Near Infrared Photoimmunotherapy Using Fluorescence Lifetime Imaging  

Science Journals Connector (OSTI)

...single-exponential models with the Fit TPSF tool. PIT for in vitro and in vivo models PIT was conducted with a red light-emitting diode (LED) light at 680 to 700 nm wavelength (Tech-LED, Marubeni America Co.; ref. 2). Power densities were...

Takahito Nakajima; Kohei Sano; Makoto Mitsunaga; Peter L. Choyke; Hisataka Kobayashi

2012-09-15T23:59:59.000Z

336

UESC Enabling Documents  

Broader source: Energy.gov [DOE]

Presentation—given at the Spring 2009 Federal Utility Partnership Working Group (FUPWG) meeting—discusses the enabling documents to help federal contract officers establish utility energy service contracts (UESCs).

337

The internight variability of the optical to near-infrared flux density and polarization of the blazars 0215 + 015 and 0851 + 202 during outbursts  

Science Journals Connector (OSTI)

......acceleration region would be ~ 150 au (~20 light- hours). Furthermore, Koupelis...magnetic field structure. In this 'Christmas tree' model, the size of the individual...buted. We believe that the Bjornsson 'Christmas tree' sub- components can be identified......

C. Brindle

1996-10-01T23:59:59.000Z

338

Retired supercomputers enable student research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

October Retired supercomputers enable student research Retired supercomputers enable student research Decommissioned supercomputers give systems researchers and students a...

339

Energy Savings Performance Contract (ESPC) ENABLE Program  

Broader source: Energy.gov (indexed) [DOE]

Performance Contract (ESPC) ENABLE Program The Energy Savings Performance Contract (ESPC) ENABLE program, a new project funding approach, allows small Federal facilities to realize energy and water savings in six months or less. ESPC ENABLE provides a standardized and stream- lined process to install targeted energy conservation measures (ECMs) such as lighting, water, and controls with measurement and verification (M&V) appropriate for the size and scope of the project. This allows Federal facilities smaller than 200,000 square feet to make progress towards important energy efficiency and water conservation requirements. ESPC ENABLE Benefits ESPC ENABLE builds off the success of the U.S. Department of Energy Federal Energy Management Program's (FEMP)

340

Energy Savings Performance Contract (ESPC) ENABLE Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Performance Contract (ESPC) ENABLE Program The Energy Savings Performance Contract (ESPC) ENABLE program, a new project funding approach, allows small Federal facilities to realize energy and water savings in six months or less. ESPC ENABLE provides a standardized and stream- lined process to install targeted energy conservation measures (ECMs) such as lighting, water, and controls with measurement and verification (M&V) appropriate for the size and scope of the project. This allows Federal facilities smaller than 200,000 square feet to make progress towards important energy efficiency and water conservation requirements. ESPC ENABLE Benefits ESPC ENABLE builds off the success of the U.S. Department of Energy Federal Energy Management Program's (FEMP)

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341

UESC Enabling Documents  

Broader source: Energy.gov (indexed) [DOE]

Innovation for Our Energy Future Innovation for Our Energy Future Karen Thomas National Renewable Energy Laboratory Biloxi, Mississippi May 6, 2009 Utility Energy Services Contracts: Enabling Documents 2009 Interim Update FEMP's UESC Enabling Documents Details: Legislation and Executive actions Legal opinions Agency guidance ...and more www.eere.energy.gov/femp/pdfs/28792.pdf National Renewable Energy Laboratory Innovation for Our Energy Future PURPOSE * Designed to assist federal agency and utility staff involved in administering utility energy service projects * Clearly show that federal agencies have the authority to enter

342

Microsystems Enabled Photovoltaics  

ScienceCinema (OSTI)

Sandia's microsystems enabled photovoltaic advances combine mature technology and tools currently used in microsystem production with groundbreaking advances in photovoltaics cell design, decreasing production and system costs while improving energy conversion efficiency. The technology has potential applications in buildings, houses, clothing, portable electronics, vehicles, and other contoured structures.

Gupta, Vipin; Nielson, Greg; Okandan, Murat, Granata, Jennifer; Nelson, Jeff; Haney, Mike; Cruz-Campa, Jose Luiz

2014-06-23T23:59:59.000Z

343

Two-photon-absorption photodiodes in Si photonic-crystal slow-light Ryo Hayakawa, Norihiro Ishikura, Hong C. Nguyen, and Toshihiko Baba  

E-Print Network [OSTI]

Two-photon-absorption photodiodes in Si photonic-crystal slow-light waveguides Ryo Hayakawa enhancement and non-linear behavior in avalanche photodiodes under high power condition J. Appl. Phys. 113, 044509 (2013) Near-infrared photodetection of -FeSi2/Si heterojunction photodiodes at low temperatures

Baba, Toshihiko

344

Demand response enabling technology development  

E-Print Network [OSTI]

behavior in developing a demand response future. Phase_II_Demand Response Enabling Technology Development Phase IIYi Yuan The goal of the Demand Response Enabling Technology

Arens, Edward; Auslander, David; Huizenga, Charlie

2008-01-01T23:59:59.000Z

345

ESPC ENABLE Webinar for ESCOs  

Broader source: Energy.gov [DOE]

Presentation describes the Energy Savings Performance Contract (ESPC) ENABLE Webinar for Energy Service Companies (ESCOs).

346

Enabling immersive simulation.  

SciTech Connect (OSTI)

The object of the 'Enabling Immersive Simulation for Complex Systems Analysis and Training' LDRD has been to research, design, and engineer a capability to develop simulations which (1) provide a rich, immersive interface for participation by real humans (exploiting existing high-performance game-engine technology wherever possible), and (2) can leverage Sandia's substantial investment in high-fidelity physical and cognitive models implemented in the Umbra simulation framework. We report here on these efforts. First, we describe the integration of Sandia's Umbra modular simulation framework with the open-source Delta3D game engine. Next, we report on Umbra's integration with Sandia's Cognitive Foundry, specifically to provide for learning behaviors for 'virtual teammates' directly from observed human behavior. Finally, we describe the integration of Delta3D with the ABL behavior engine, and report on research into establishing the theoretical framework that will be required to make use of tools like ABL to scale up to increasingly rich and realistic virtual characters.

McCoy, Josh (University of California Santa Cruz, Santa Cruz, CA); Mateas, Michael (University of California Santa Cruz, Santa Cruz, CA); Hart, Derek H.; Whetzel, Jonathan; Basilico, Justin Derrick; Glickman, Matthew R.; Abbott, Robert G.

2009-02-01T23:59:59.000Z

347

Light Trapping for Thin Silicon Solar Cells by Femtosecond Laser Texturing: Preprint  

SciTech Connect (OSTI)

Femtosecond laser texturing is used to create nano- to micron-scale surface roughness that strongly enhances light-trapping in thin crystalline silicon solar cells. Light trapping is crucial for thin solar cells where a single light-pass through the absorber is insufficient to capture the weakly absorbed red and near-infrared photons, especially with an indirect-gap semiconductor absorber layer such as crystalline Si which is less than 20 um thick. We achieve enhancement of the optical absorption from light-trapping that approaches the Yablonovitch limit.

Lee, B. G.; Lin, Y. T.; Sher, M. J.; Mazur, E.; Branz, H. M.

2012-06-01T23:59:59.000Z

348

Using ENABLE in a UESC  

Broader source: Energy.gov (indexed) [DOE]

Using ENABLE in a UESC Using ENABLE in a UESC FUPWG San Francisco May 23, 2013 David McAndrew Utility Program Lead Federal Energy Management Program 2 * Overview ESPC ENABLE * Using ENABLE Tools in an UESC - Basic Concept of an ENABLE UESC - Proposed ENABLE Process * IGA Tool * Final Proposal * Award Design and Installation * Performance Assurance and Acceptance Presentation Overview 3 * ESPC ENABLE is FEMPs new project-funding offering intended to fill existing program gaps - Specifically designed to support the needs of small Federal sites through a reduced ECM scope and streamlined process - Intended for facilities with buildings under 200,000 square feet (traditionally an underserved market) - Or, where ESPC ENABLE presents the best or only option for the agency to fund an efficiency project

349

VVV SURVEY NEAR-INFRARED PHOTOMETRY OF KNOWN BULGE RR LYRAE STARS: THE DISTANCE TO THE GALACTIC CENTER AND ABSENCE OF A BARRED DISTRIBUTION OF THE METAL-POOR POPULATION  

SciTech Connect (OSTI)

We have combined optical and near-infrared data of known RR Lyrae (RRL) stars in the bulge in order to study the spatial distribution of its metal-poor component by measuring precise reddening values and distances of 7663 fundamental-mode RRL stars with high-quality photometry. We obtain a distance to the Galactic center of R {sub 0} = 8.33 ± 0.05 ± 0.14 kpc. We find that the spatial distribution of the RRL stars differs from the structures traced by the predominantly metal-rich red clump (RC) stars. Unlike the RC stars, the RRL stars do not trace a strong bar, but have a more spheroidal, centrally concentrated distribution, showing only a slight elongation in its very center. We find a hint of bimodality in the density distribution at high southern latitudes (b < –5°), which needs to be confirmed by extending the areal coverage of the current census. The different spatial distributions of the metal-rich and metal-poor stellar populations suggest that the Milky Way has a composite bulge.

Dékány, I.; Minniti, D.; Catelan, M.; Zoccali, M.; Hempel, M. [Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 782-0436 Macul, Santiago (Chile)] [Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 782-0436 Macul, Santiago (Chile); Saito, R. K. [Departamento de Física, Universidade Federal de Sergipe, Av. Marechal Rondon s/n, 49100-000, São Cristóvão, SE (Brazil)] [Departamento de Física, Universidade Federal de Sergipe, Av. Marechal Rondon s/n, 49100-000, São Cristóvão, SE (Brazil); Gonzalez, O. A., E-mail: idekany@astro.puc.cl [European Southern Observatory, Alonso de Córdova 3170, Vitacura, Santiago (Chile)

2013-10-20T23:59:59.000Z

350

Demand response enabling technology development  

E-Print Network [OSTI]

Demand Response Enabling Technology Development Phase IEfficiency and Demand Response Programs for 2005/2006,Application to Demand Response Energy Pricing” SenSys 2003,

2006-01-01T23:59:59.000Z

351

THE SPITZER MID-INFRARED ACTIVE GALACTIC NUCLEUS SURVEY. I. OPTICAL AND NEAR-INFRARED SPECTROSCOPY OF OBSCURED CANDIDATES AND NORMAL ACTIVE GALACTIC NUCLEI SELECTED IN THE MID-INFRARED  

SciTech Connect (OSTI)

We present the results of a program of optical and near-infrared spectroscopic follow-up of candidate active galactic nuclei (AGNs) selected in the mid-infrared. This survey selects both normal and obscured AGNs closely matched in luminosity across a wide range, from Seyfert galaxies with bolometric luminosities L {sub bol} ? 10{sup 10} L {sub ?} to highly luminous quasars (L {sub bol} ? 10{sup 14} L {sub ?}), all with redshifts ranging from 0 to 4.3. Samples of candidate AGNs were selected with mid-infrared color cuts at several different 24 ?m flux density limits to ensure a range of luminosities at a given redshift. The survey consists of 786 candidate AGNs and quasars, of which 672 have spectroscopic redshifts and classifications. Of these, 137 (20%) are type 1 AGNs with blue continua, 294 (44%) are type 2 objects with extinctions A{sub V} ?> 5 toward their AGNs, 96 (14%) are AGNs with lower extinctions (A{sub V} ? 1), and 145 (22%) have redshifts, but no clear signs of AGN activity in their spectra. Of the survey objects 50% have L {sub bol} > 10{sup 12} L {sub ?}, in the quasar regime. We present composite spectra for type 2 quasars and objects with no signs of AGN activity in their spectra. We also discuss the mid-infrared—emission-line luminosity correlation and present the results of cross correlations with serendipitous X-ray and radio sources. The results show that: (1) obscured objects dominate the overall AGN population, (2) mid-infrared selected AGN candidates exist which lack AGN signatures in their optical spectra but have AGN-like X-ray or radio counterparts, and (3) X-ray and optical classifications of obscured and unobscured AGNs often differ.

Lacy, M. [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States); Ridgway, S. E. [National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); Gates, E. L. [UCO/Lick Observatory, P.O. Box 85, Mount Hamilton, CA 95140 (United States); Nielsen, D. M. [Department of Astronomy, University of Wisconsin, 475 N. Charter Street, Madison, WI 53706 (United States); Petric, A. O. [Department of Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States); Sajina, A. [Department of Physics and Astronomy, Tuffs University, 212 College Avenue, Medford, MA 02155 (United States); Urrutia, T. [Leibniz-Institut für Astrophysik Potsdam, An der Sternwarte 16, D-14482 Potsdam (Germany); Cox Drews, S. [946 Mangrove Avenue 102, Sunnyvale, CA 94086 (United States); Harrison, C. [Department of Astronomy, University of Michigan, Ann Arbor, MI 48109 (United States); Seymour, N. [CSIRO, P.O. Box 76, Epping, NSW 1710 (Australia); Storrie-Lombardi, L. J. [Spitzer Science Center, California Institute of Technology, Pasadena, CA 91125 (United States)

2013-10-01T23:59:59.000Z

352

THE LBT BOOeTES FIELD SURVEY. I. THE REST-FRAME ULTRAVIOLET AND NEAR-INFRARED LUMINOSITY FUNCTIONS AND CLUSTERING OF BRIGHT LYMAN BREAK GALAXIES AT Z {approx} 3  

SciTech Connect (OSTI)

We present a deep LBT/LBC U{sub spec}-band imaging survey (9 deg{sup 2}) covering the NOAO Booetes field. A total of 14,485 Lyman break galaxies (LBGs) at z {approx} 3 are selected, which are used to measure the rest-frame UV luminosity function (LF). The large sample size and survey area reduce the LF uncertainties due to Poisson statistics and cosmic variance by {>=}3 compared to previous studies. At the bright end, the LF shows excess power compared to the best-fit Schechter function, which can be attributed to the contribution of z {approx} 3 quasars. We compute the rest-frame near-infrared LF and stellar mass function (SMF) of z {approx} 3 LBGs based on the R-band and [4.5 {mu}m]-band flux relation. We investigate the evolution of the UV LFs and SMFs between z {approx} 7 and z {approx} 3, which supports a rising star formation history in the LBGs. We study the spatial correlation function of two bright LBG samples and estimate their average host halo mass. We find a tight relation between the host halo mass and the galaxy star formation rate (SFR), which follows the trend predicted by the baryonic accretion rate onto the halo, suggesting that the star formation in LBGs is fueled by baryonic accretion through the cosmic web. By comparing the SFRs with the total baryonic accretion rates, we find that cosmic star formation efficiency is about 5%-20% and it does not evolve significantly with redshift, halo mass, or galaxy luminosity.

Bian Fuyan; Fan Xiaohui; Jiang Linhua; McGreer, Ian; Dave, Romeel [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Dey, Arjun [National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); Green, Richard F. [Large Binocular Telescope Observatory and Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Maiolino, Roberto [Cavendish Laboratory, University of Cambridge, 19 J. J. Thomson Ave., Cambridge CB3 0HE (United Kingdom); Walter, Fabian [Max-Planck-Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg (Germany); Lee, Kyoung-Soo [Department of Physics, Purdue University, West Lafayette, IN 47906 (United States)

2013-09-01T23:59:59.000Z

353

Enabling RFID Retail George Roussos  

E-Print Network [OSTI]

Enabling RFID Retail George Roussos Birkbeck College University of London The past two years have perspectives on RFID retail in the particular context of the European Union and attempt to identify the core issues that must be addressed to enable widely accepted deployment of RFID in retail. The discussion

Roussos, George

354

Optimizing Nanoparticle Designs to Reach Ideal Light Absorption  

E-Print Network [OSTI]

Ideal absorption describes a particular means of optimizing light-matter interactions with a host of potential applications. This work presents new analytic formulas and describes semi-analytical methods for the design of electric or magnetic ideal absorption in nanoparticles. These formulas indicate that ideal absorption is attainable in homogeneous spheres with known materials at specific sizes and frequencies. They also provide a means of designing core-shell particles to produce ideal absorption at virtually any frequency in the visible and near infrared range.

Grigoriev, Victor; Wenger, Jerome; Stout, Brian

2014-01-01T23:59:59.000Z

355

Sandia National Laboratories: Enabling Energy Efficiency  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ClimateEnabling Energy Efficiency Enabling Energy Efficiency videobanner Enabling Energy Efficiency Sp eakers: George Wang (EFRC Thrust Leader) and Tania Henry(Researcher) Date:...

356

SciTech Connect: Enabling graphene nanoelectronics.  

Office of Scientific and Technical Information (OSTI)

Enabling graphene nanoelectronics. Citation Details In-Document Search Title: Enabling graphene nanoelectronics. Enabling graphene nanoelectronics. Recent work has shown that...

357

2012 Nuclear Energy Enabling Technology Factsheet | Department...  

Broader source: Energy.gov (indexed) [DOE]

Nuclear Energy Enabling Technology Factsheet 2012 Nuclear Energy Enabling Technology Factsheet Learn more about the Nuclear Energy Enabling Technologies (NEET) program, which will...

358

ESPC ENABLE Webinar for ESCOs  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Webinar for Webinar for ESCOs Chip Goyette - ESPC ENABLE Program Lead September 13, 2012 2 | Federal Energy Management Program eere.energy.gov * Introductions and Purpose * ESPC ENABLE Overview/Current State * DOE Qualified List Application Process * GSA Schedule 84, SIN 246-53 Application Process * Questions & Answers Agenda 3 | Federal Energy Management Program eere.energy.gov This presentation will provide you, the energy services company (ESCO), with the information necessary to decide whether or not to participate in the ESPC ENABLE program. Our goal is to provide you with the information needed to make that decision, and the necessary steps to take once it has been made. Purpose 4 | Federal Energy Management Program eere.energy.gov ESPC ENABLE Overview and Current State

359

ESPC ENABLE Webinar for ESCOs  

Broader source: Energy.gov (indexed) [DOE]

Webinar for Webinar for ESCOs Chip Goyette - ESPC ENABLE Program Lead September 13, 2012 2 | Federal Energy Management Program eere.energy.gov * Introductions and Purpose * ESPC ENABLE Overview/Current State * DOE Qualified List Application Process * GSA Schedule 84, SIN 246-53 Application Process * Questions & Answers Agenda 3 | Federal Energy Management Program eere.energy.gov This presentation will provide you, the energy services company (ESCO), with the information necessary to decide whether or not to participate in the ESPC ENABLE program. Our goal is to provide you with the information needed to make that decision, and the necessary steps to take once it has been made. Purpose 4 | Federal Energy Management Program eere.energy.gov ESPC ENABLE Overview and Current State

360

Enabling instrumentation and technology for 21st century light sources  

E-Print Network [OSTI]

undulators using high temperature superconductor tape, i n :clear aperture. The high temperature superconductor (HTS)For stacked high temperature superconductor (HTS) u n d u l

Byrd, J.M.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

ESPC ENABLE ACQUISITION PLAN TEMPLATE  

Broader source: Energy.gov [DOE]

Template serves as a tool to help agencies develop an acquisition plan. The acquisition plan is the first formal step in the Energy Savings Performance Contract (ESPC) ENABLE procurement process. The completed acquisition plan will serve as a guide throughout the rest of the process.

362

ESPC ENABLE Draft Task Order  

Broader source: Energy.gov [DOE]

Document provides a draft for an agency to use when forming an ESPC ENABLE contract and making a task order award. This draft task order provides the framework for a contract that agencies and energy service companies can tailor to the particular needs of each site or project.

363

Impact of Lighting Requirements on VLC Systems J. Gancarz, H. Elgala, T.D.C. Little  

E-Print Network [OSTI]

Report No. 11-01-2013 Abstract Advances in Solid State Lighting (SSL) are enabling Light-Emitting Diodes

Little, Thomas

364

Echo-Enabled Harmonic Generation  

SciTech Connect (OSTI)

A recently proposed concept of the Echo-Enabled Harmonic Generation (EEHG) FEL uses two laser modulators in combination with two dispersion sections to generate a high-harmonic density modulation in a relativistic beam. This seeding technique holds promise of a one-stage soft x-ray FEL that radiates not only transversely but also longitudinally coherent pulses. Currently, an experimental verification of the concept is being conducted at the SLAC National Accelerator Laboratory aimed at the demonstration of the EEHG.

Stupakov, Gennady

2010-08-25T23:59:59.000Z

365

Echo-Enabled Harmonic Generation  

SciTech Connect (OSTI)

A recently proposed concept of the Echo-Enabled Harmonic Generation (EEHG) FEL uses two laser modulators in combination with two dispersion sections to generate a high-harmonic density modulation in a relativistic beam. This seeding technique holds promise of a one-stage soft x-ray FEL that radiates not only transversely but also longitudinally coherent pulses. Currently, an experimental verification of the concept is being conducted at the SLAC National Accelerator Laboratory aimed at the demonstration of the EEHG.

Stupakov, Gennady; /SLAC

2012-06-28T23:59:59.000Z

366

Directory Enabled Policy Based Networking  

SciTech Connect (OSTI)

This report presents a discussion of directory-enabled policy-based networking with an emphasis on its role as the foundation for securely scalable enterprise networks. A directory service provides the object-oriented logical environment for interactive cyber-policy implementation. Cyber-policy implementation includes security, network management, operational process and quality of service policies. The leading network-technology vendors have invested in these technologies for secure universal connectivity that transverses Internet, extranet and intranet boundaries. Industry standards are established that provide the fundamental guidelines for directory deployment scalable to global networks. The integration of policy-based networking with directory-service technologies provides for intelligent management of the enterprise network environment as an end-to-end system of related clients, services and resources. This architecture allows logical policies to protect data, manage security and provision critical network services permitting a proactive defense-in-depth cyber-security posture. Enterprise networking imposes the consideration of supporting multiple computing platforms, sites and business-operation models. An industry-standards based approach combined with principled systems engineering in the deployment of these technologies allows these issues to be successfully addressed. This discussion is focused on a directory-based policy architecture for the heterogeneous enterprise network-computing environment and does not propose specific vendor solutions. This document is written to present practical design methodology and provide an understanding of the risks, complexities and most important, the benefits of directory-enabled policy-based networking.

KELIIAA, CURTIS M.

2001-10-01T23:59:59.000Z

367

ESPC ENABLE Measurement and Verification Plan Template  

Broader source: Energy.gov [DOE]

Document contains a comprehensive measurement and verification plan template for a proposed ESPC ENABLE project.

368

Internet-Enabled Supply ChainsInternet-Enabled Supply Chains Quan Z. Sheng, University of Adelaide  

E-Print Network [OSTI]

89 Internet-Enabled Supply ChainsInternet-Enabled Supply Chains Quan Z. Sheng, University of the Internet-enabled Supply Chain 89 Key Supply Chain Processes and the Internet 89 Impacts of Internet-Enabled Supply Chains 92 Enabling Technologies for Internet-Enabled Supply Chain Management 92 Internet-based EDI

Sheng, Michael

369

Phase-transient hierarchical turbulence as an energy correlation generator of blazar light curves  

E-Print Network [OSTI]

Hierarchical turbulent structure constituting a jet is considered to reproduce energy-dependent variability in blazars, particularly, the correlation between X- and gamma-ray light curves measured in the TeV blazar Markarian 421. The scale-invariant filaments are featured by the ordered magnetic fields that involve hydromagnetic fluctuations serving as electron scatterers for diffusive shock acceleration, and the spatial size scales are identified with the local maximum electron energies, which are reflected in the synchrotron spectral energy distribution (SED) above the near-infrared/optical break. The structural transition of filaments is found to be responsible for the observed change of spectral hysteresis.

Mitsuru Honda

2008-02-06T23:59:59.000Z

370

Microsoft PowerPoint - Lindsey PARC EFRC Research Highlight March...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

biohybrid systems (peptides + absorbers) facilitates capture of the near-infrared solar light capture of the near infrared solar light Research Details -We previously...

371

Quantum Enabled Security (QES) for Optical Communications  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Quantum Enabled Security (QES) for Optical Communications Quantum Enabled Security (QES) for Optical Communications Quantum Enabled Security (QES) for Optical Communications Los Alamos National Laboratory has developed Quantum Enabled Security (QES), a revolutionary new cybersecurity capability using quantum (single-photon) communications integrated with optical communications to provide a strong, innate, security foundation at the photonic layer for optical fiber networks. July 10, 2013 Quantum Enabled Security (QES) for Optical Communications Available for thumbnail of Feynman Center (505) 665-9090 Email Quantum Enabled Security (QES) for Optical Communications Applications: Secure communication over optical or free space networks Financial networks Transparent access networks: fiber to the home (FTTH); fiber to the

372

New Services for Building Maintenance Enabled by Building Automation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

New Services for Building Maintenance Enabled by Building Automation New Services for Building Maintenance Enabled by Building Automation Systems Speaker(s): Heikki Ihasalo Date: May 17, 2007 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Peng Xu Today's building automation systems enable building systems integration and access to information from a variety of sources, e.g. fire alarm systems, access control, security systems, lighting and control systems. With the help of Internet technology and XML (Extensible Markup Language) building automation systems can also connect to other enterprise\ applications such as facility management software, maintenance management systems, ERP or financial systems. New applications are also emerging to manage energy consumption in buildings, for example demand response and fault detection

373

Mycobacterium tuberculosis Protein Kinase K Enables Growth Adaptation through Translation Control  

Science Journals Connector (OSTI)

...and cellular energy status. Elevated levels...reflective of the energy demand, rate of...signals and enable us to discern the direct...wasteful dissipation of energy. Clearly, in light...phase and cellular energy status. Elevated levels...

Vandana Malhotra; Blessing P. Okon; Josephine E. Clark-Curtiss

2012-06-01T23:59:59.000Z

374

Demand response-enabled residential thermostat controls.  

E-Print Network [OSTI]

human dimension of demand response technology from a caseArens, E. , et al. 2008. Demand Response Enabling TechnologyArens, E. , et al. 2006. Demand Response Enabling Technology

Chen, Xue; Jang, Jaehwi; Auslander, David M.; Peffer, Therese; Arens, Edward A

2008-01-01T23:59:59.000Z

375

Enabling time travel for the scholarly web  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Enabling time travel for the scholarly web Enabling time travel for the scholarly web An international team of information scientists has begun a study to investigate how web links...

376

Enabling individualized therapy through nanotechnology  

Science Journals Connector (OSTI)

Individualized medicine is the healthcare strategy that rebukes the idiomatic dogma of ‘losing sight of the forest for the trees’. We are entering a new era of healthcare where it is no longer acceptable to develop and market a drug that is effective for only 80% of the patient population. The emergence of “-omic” technologies (e.g. genomics, transcriptomics, proteomics, metabolomics) and advances in systems biology are magnifying the deficiencies of standardized therapy, which often provide little treatment latitude for accommodating patient physiologic idiosyncrasies. A personalized approach to medicine is not a novel concept. Ever since the scientific community began unraveling the mysteries of the genome, the promise of discarding generic treatment regimens in favor of patient-specific therapies became more feasible and realistic. One of the major scientific impediments of this movement towards personalized medicine has been the need for technological enablement. Nanotechnology is projected to play a critical role in patient-specific therapy; however, this transition will depend heavily upon the evolutionary development of a systems biology approach to clinical medicine based upon “-omic” technology analysis and integration. This manuscript provides a forward looking assessment of the promise of nanomedicine as it pertains to individualized medicine and establishes a technology “snapshot” of the current state of nano-based products over a vast array of clinical indications and range of patient specificity. Other issues such as market driven hurdles and regulatory compliance reform are anticipated to “self-correct” in accordance to scientific advancement and healthcare demand. These peripheral, non-scientific concerns are not addressed at length in this manuscript; however they do exist, and their impact to the paradigm shifting healthcare transformation towards individualized medicine will be critical for its success.

Jason H. Sakamoto; Anne L. van de Ven; Biana Godin; Elvin Blanco; Rita E. Serda; Alessandro Grattoni; Arturas Ziemys; Ali Bouamrani; Tony Hu; Shivakumar I. Ranganathan; Enrica De Rosa; Jonathan O. Martinez; Christine A. Smid; Rachel M. Buchanan; Sei-Young Lee; Srimeenakshi Srinivasan; Matthew Landry; Anne Meyn; Ennio Tasciotti; Xuewu Liu; Paolo Decuzzi; Mauro Ferrari

2010-01-01T23:59:59.000Z

377

ESPC ENABLE: Energy Conservation Measures (ECMs) Summary  

Broader source: Energy.gov [DOE]

Presentation slide outlining details on the energy conservation measures (ECMs) offered throughout the Energy Savings Performance Contract (ESPC) ENABLE program.

378

Lighting fundamentals handbook: Lighting fundamentals and principles for utility personnel  

SciTech Connect (OSTI)

Lighting accounts for approximately 30% of overall electricity use and demand in commercial buildings. This handbook for utility personnel provides a source of basic information on lighting principles, lighting equipment, and other considerations related to lighting design. The handbook is divided into three parts. Part One, Physics of Light, has chapters on light, vision, optics, and photometry. Part Two, Lighting Equipment and Technology, focuses on lamps, luminaires, and lighting controls. Part Three, Lighting Design Decisions, deals with the manner in which lighting design decisions are made and reviews relevant methods and issues. These include the quantity and quality of light needed for visual tasks, calculation methods for verifying that lighting needs are satisfied, lighting economics and methods for evaluating investments in efficient lighting systems, and miscellaneous design issues including energy codes, power quality, photobiology, and disposal of lighting equipment. The handbook contains a discussion of the role of the utility in promoting the use of energy-efficient lighting. The handbook also includes a lighting glossary and a list of references for additional information. This convenient and comprehensive handbook is designed to enable utility lighting personnel to assist their customers in developing high-quality, energy-efficient lighting systems. The handbook is not intended to be an up-to-date reference on lighting products and equipment.

Eley, C.; Tolen, T. (Eley (Charles) Associates, San Francisco, CA (United States)); Benya, J.R. (Luminae Souter Lighting Design, San Francisco, CA (United States))

1992-12-01T23:59:59.000Z

379

Bio-light for optical sensing  

Science Journals Connector (OSTI)

Laser and fluorescence-based sensing is promising for medical applications. Here, we present new approaches to enable efficient light delivery into the body and to generate light from...

Yun, Seok-Hyun A

380

ESPC ENABLE: Energy Conservation Measures (ECMs) Summary | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Contract (ESPC) ENABLE program. espcenableoverview.pdf More Documents & Publications ESPC ENABLE Briefing Using ENABLE in a UESC ESPC ENABLE Measurement and Verification Protocol...

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Quantum Enabled Security (QES) for Optical Communications  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

integrated with optical communications to provide a strong, innate, security foundation at the photonic layer for optical fiber networks. July 10, 2013 Quantum Enabled...

382

Acoustic Laptops as a research enabler  

E-Print Network [OSTI]

we present an Acous- tic Laptop, that enables distributedsensor hardware as the Acous- tic ENSBox, but replaces theof using the Acous- tic Laptop as a rich prototyping

Michael Allen; Lewis Girod; Deborah Estrin

2007-01-01T23:59:59.000Z

383

CASL Test Stands . . . Enabling the CASL mission  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Test Stands . . . Enabling the CASL mission In a nuclear reactor core there are many phenomena in motion at both the microscopic and macroscopic levels that ultimately affect the...

384

Bioproducts: Enabling Fielfuels and Growing the Bioeconomy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

biomass. The Office focuses on reducing technology risks from feedstock supply and logistics through development of biorefinery technologies to enable industry investment in...

385

ESPC ENABLE Measurement and Verification Protocol  

Broader source: Energy.gov [DOE]

Document provides an overview of the Measurement and Verification (M&V) Protocol utilized within ENABLE energy savings performance contract projects.

386

January 2008 The new collaboration: enabling  

E-Print Network [OSTI]

January 2008 The new collaboration: enabling innovation, changing the workplace. #12;The new collaboration: enabling innovation, changing the workplace. Page 2 Contents 2 Introduction: the who, what, why of collaboration 3 Trends already have begun to change the way we collaborate 6 New concepts of information use

387

Physicists change the light bulb  

Science Journals Connector (OSTI)

...came in such colors as red and green. They were used as indicator lights...which has enabled bright and energy-saving white light sources...and waste most of the input energy. “With 20% of the world's...people who are not connected to energy grids. The usefulness of this...

Dennis Normile

2014-10-10T23:59:59.000Z

388

Enabling Exponential Innovation via Open Source  

E-Print Network [OSTI]

-technical innovations #12;Power law distribution #12;OSSD Projects as innovation engines Social/technical innovations OSSD projects exhibit sustained exponential growth via social and technical innovations ExponentialEnabling Exponential Innovation via Open Source Software Development Walt Scacchi Institute

Scacchi, Walt

389

Utility Energy Services Contracts: Enabling Documents Overview  

Broader source: Energy.gov [DOE]

Presentation covers the utility energy service contract (UESC) enabling documents overview and is given at the FUPWG 2006 Spring meeting, held on May 3-4, 2006 in Atlanta, Georgia.

390

"Develop enabling optoelectronic devices for broadband  

E-Print Network [OSTI]

"Develop enabling optoelectronic devices for broadband communications and photonic systems Group Our group focuses on optoelectronic devices and photonic integrated circuits to photodiodes with the highest linearity and output power to date. High-Speed Optoelectronic Devices Driven

Acton, Scott

391

Enabling Computational Methods for Offshore Wind Turbines  

Science Journals Connector (OSTI)

In this book chapter we give an overview of our recent work in computational methods for geometry modeling, fluid mechanics, structural mechanics, and fluid–structure interaction that enable high-fidelity simulat...

Y. Bazilevs; M.-C. Hsu; I. Akkerman…

2013-01-01T23:59:59.000Z

392

Enabling Thin Silicon Solar Cell Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

cracking problem in silicon cell technology," says Budiman. "The ALS provides us with a light that allows us to measure and characterize molecular stress in a very quantitative...

393

Enabling time travel for the scholarly web  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Enabling time travel for the scholarly web Enabling time travel for the scholarly web Enabling time travel for the scholarly web An international team of information scientists has begun a study to investigate how web links in scientific and other academic articles fail to lead to the resources being referenced. July 16, 2013 Herbert Van de Sompel, a Los Alamos National Laboratory information scientist, describes the information pathway involved in preventing "reference rot" in scientific material linked to the web. Herbert Van de Sompel, a Los Alamos National Laboratory information scientist, describes the information pathway involved in preventing "reference rot" in scientific material linked to the web. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "Increasingly, scientific papers contain links to web pages containing,

394

Utility Energy Services Contracts: Enabling Documents  

Broader source: Energy.gov (indexed) [DOE]

CONTRACTS: ENABLING DOCUMENTS Karen Thomas National Renewable Energy Laboratory Overview * The Enabling Documents for Utility Energy Services Contracts (UESCs) - provide a selected set of background information that clarify the authority for Federal agencies to enter into UESCs. - and, is designed to assist Federal agency acquisition teams who are interested in implementing energy service projects. The Federal agencies' partners have benefited from the Enabling Documents as well. * Energy Policy Act of 2005 * 42 U.S.C. § 8256, Energy Policy Act of 1992 * 10 U.S.C. § 2865, Energy Savings at Military Installations * 10 U.S.C. § 2866, Water Conservation at Military Installations Legislative & Executive Actions * Federal Acquisition Regulations, Part 41 - - Authorizes GSA to prescribe policy and methods for the

395

Enabling Thin Silicon Solar Cell Technology  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Enabling Thin Silicon Solar Cell Enabling Thin Silicon Solar Cell Technology Enabling Thin Silicon Solar Cell Technology Print Friday, 21 June 2013 10:49 Generic silicon solar cells showing +45°, -45°, and dendritic crack patterns. The effort to shift U.S. energy reliance from fossil fuels to renewable sources has spurred companies to reduce the cost and increase the reliability of their solar photovoltaics (SPVs). The use of thinner silicon in SPV technologies is being widely adopted because it significantly reduces costs; however, silicon is brittle, and thinner silicon, coupled with other recent trends in SPV technologies (thinner glass, lighter or no metal frames, increased use of certain polymers for encapsulation of the silicon cells), is more susceptible to stress and cracking. When the thin

396

2012_EnableTech_factsheet.indd  

Broader source: Energy.gov (indexed) [DOE]

nuclear.gov nuclear.gov February 15, 2011 N NUCLEAR ENERGY ENABLING TECHNOLOGIES UCLEAR ENERGY ENABLING TECHNOLOGIES The U.S. Department of Energy's Offi ce of Nuclear Energy T he Nuclear Energy Enabling Technologies (NEET) program will develop crosscutting technologies that directly support and complement the Office of Nuclear Energy's (NE) development of new and advanced reactor concepts and fuel cycle technologies. It will encourage the development of transformative, "outside-the-box" solutions across the full range of nuclear energy technology issues. In the FY 2012 budget request, the National Science User Facility is included with the NEET program elements. BENEFITS OF THE INITIATIVE Pursuing crosscutting and transformative nuclear technologies and capabilities for

397

ESPC ENABLE Procurement Process | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Procurement Process Procurement Process ESPC ENABLE Procurement Process October 7, 2013 - 2:12pm Addthis Energy Savings Performance Contract (ESPC) ENABLE's streamlined five-phase procurement process uses General Services Administration (GSA) Award Schedule 84, SIN 246-53 as the procurement vehicle to award projects. The Schedule allows Federal customers to quickly and easily select a qualified contractor to perform an investment grade audit and ultimately develop and install the project. The Schedule also distinguishes vendors that hold small business designations, allowing customers to execute small business set asides if included in their acquisition planning strategy. The ESPC ENABLE process conforms with all applicable ESPC laws and regulations and follows a straightforward procurement process that includes

398

Nuclear Energy Enabling Technologies (NEET) Reactor Materials  

Broader source: Energy.gov (indexed) [DOE]

Enabling Technologies (NEET) Reactor Materials Enabling Technologies (NEET) Reactor Materials Award Recipient Estimated Award Amount* Award Location Supporting Organizations Project Description University of Nebraska $979,978 Lincoln, NE Massachusetts Institute of Technology (Cambridge, MA), Texas A&M (College Station, TX) Project will explore the development of advanced metal/ceramic composites. These improvements could lead to more efficient production of electricity in advanced reactors. Oak Ridge National Laboratory $849,000 Oak Ridge, TN University of Wisconsin-Madison (Madison, WI) Project will develop novel high-temperature high-strength steels with the help of computational modeling, which could lead to increased efficiency in advanced reactors. Pacific Northwest National Laboratory

399

Origami-enabled deformable silicon solar cells  

SciTech Connect (OSTI)

Deformable electronics have found various applications and elastomeric materials have been widely used to reach flexibility and stretchability. In this Letter, we report an alternative approach to enable deformability through origami. In this approach, the deformability is achieved through folding and unfolding at the creases while the functional devices do not experience strain. We have demonstrated an example of origami-enabled silicon solar cells and showed that this solar cell can reach up to 644% areal compactness while maintaining reasonable good performance upon cyclic folding/unfolding. This approach opens an alternative direction of producing flexible, stretchable, and deformable electronics.

Tang, Rui; Huang, Hai; Liang, Hanshuang; Liang, Mengbing [School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287 (United States); Tu, Hongen; Xu, Yong [Electrical and Computer Engineering, Wayne State University, 5050 Anthony Wayne Dr., Detroit, Michigan 48202 (United States); Song, Zeming; Jiang, Hanqing, E-mail: hanqing.jiang@asu.edu [School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287 (United States); Yu, Hongyu, E-mail: hongyu.yu@asu.edu [School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287 (United States); School of Earth and Space Exploration, Arizona State University, Tempe, Arizona 85287 (United States)

2014-02-24T23:59:59.000Z

400

Light-Material Interactions in Energy Conversion - Energy Frontier...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

connecting to RG2, RG3, and RG4. We focus on manipulation of emitted and scattered light from the solar cells, investigating photonic structures that enable photon...

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Near-infrared photometry of the Galilean satellites  

SciTech Connect (OSTI)

The present near-IR (2.2-, 3.8-, 4.8-micron) lightcurves and phase coefficients for the Galilean satellites notes the geometric albedo of Io to include volcanic emission at the two longer wavelengths, although no major outbursts were detected during the 1982-1983 period of these observations. The trend of decreasing albedo with increasing wavelength exhibited by Ganymede and Europa is consistent with their possession of icy surfaces. The results obtained for Callisto are consistent with visible-wavelength observations of other dark solar system objects. 35 references.

Tittemore, W.C.; Sinton, W.M.

1989-01-01T23:59:59.000Z

402

Design of novel dyes towards the near-infrared  

E-Print Network [OSTI]

, and aplication of these starting aterials in the production of c symetrical, and d unsymetrical dyes...................................................... 1 Scheme 1.2 Synthesis of diaminobenzene- and triazole-BODIPY derivatives 46 and 47... these dyes are widely used to label proteins 10-14 and DNA 15 . However, these compounds also have some undesirable characteristics for many aplications in biotechnology. For instance, most emit at les than 60 nm, and only a handful of water...

Loudet, Aurore

2009-05-15T23:59:59.000Z

403

Visible/near-infrared hyperspectral imaging for beef tenderness prediction  

Science Journals Connector (OSTI)

Beef tenderness is an important quality attribute for consumer satisfaction. The current beef quality grading system does not incorporate a direct measure of tenderness because there is currently no accurate, rapid, nondestructive method for predicting ... Keywords: Beef tenderness, Hyperspectral imaging, Instrument grading, Principal component analysis, Textural co-occurrence matrices

Govindarajan Konda Naganathan; Lauren M. Grimes; Jeyamkondan Subbiah; Chris R. Calkins; Ashok Samal; George E. Meyer

2008-12-01T23:59:59.000Z

404

Population III and the near-infrared background excess  

Science Journals Connector (OSTI)

......025, in excess of solar already by redshift 9...fraction of the radiated energy were emitted above and...followed the mean spectral energy distribution of the quasar...problem, as it is more economical energetically and does...NIRBE and the SXB is The energy density associated with......

Piero Madau; Joseph Silk

2005-05-01T23:59:59.000Z

405

A spectroscopic system for near infrared glucose measurement  

E-Print Network [OSTI]

Noninvasive blood glucose monitoring has been long envisioned to serve as an invaluable tool in the treatment of diabetes. The current invasive method makes it difficult for diabetic patients to perform frequent blood ...

Saptari, Vidi Alfandi, 1975-

2004-01-01T23:59:59.000Z

406

Millimeter and Near-Infrared Observations of Neptune's Atmospheric Dynamics  

E-Print Network [OSTI]

Steffes 1996) and a solar abundance or less of NH 3 (RomaniSteffes 1996) and using a solar abundance of nitrogen in NHof 0.1 times the solar abundance, from observations of the

Cook, Statia Honora Luszcz

2012-01-01T23:59:59.000Z

407

Near-Infrared Fluorescent 9-Phenylethynylpyronin Analogues for Bioimaging  

Science Journals Connector (OSTI)

The syntheses and biological applications of two novel fluorescent 9-phenylethynylpyronin analogues containing either carbon or silicon at the position 10 are reported. Both fluorescent probes exhibited a relatively strong fluorescence in methanol and ...

Tomáš Pastierik; Peter Šebej; Ji?ina Medalová; Peter Štacko; Petr Klán

2014-03-31T23:59:59.000Z

408

Silicon-based visible and near-infrared optoelectric devices  

DOE Patents [OSTI]

In one aspect, the present invention provides a silicon photodetector having a surface layer that is doped with sulfur inclusions with an average concentration in a range of about 0.5 atom percent to about 1.5 atom percent. The surface layer forms a diode junction with an underlying portion of the substrate. A plurality of electrical contacts allow application of a reverse bias voltage to the junction in order to facilitate generation of an electrical signal, e.g., a photocurrent, in response to irradiation of the surface layer. The photodetector exhibits a responsivity greater than about 1 A/W for incident wavelengths in a range of about 250 nm to about 1050 nm, and a responsivity greater than about 0.1 A/W for longer wavelengths, e.g., up to about 3.5 microns.

Carey, III, James Edward (Newton, MA); Mazur, Eric (Concord, MA)

2011-12-20T23:59:59.000Z

409

Silicon-based visible and near-infrared optoelectric devices  

DOE Patents [OSTI]

In one aspect, the present invention provides a silicon photodetector having a surface layer that is doped with sulfur inclusions with an average concentration in a range of about 0.5 atom percent to about 1.5 atom percent. The surface layer forms a diode junction with an underlying portion of the substrate. A plurality of electrical contacts allow application of a reverse bias voltage to the junction in order to facilitate generation of an electrical signal, e.g., a photocurrent, in response to irradiation of the surface layer. The photodetector exhibits a responsivity greater than about 1 A/W for incident wavelengths in a range of about 250 nm to about 1050 nm, and a responsivity greater than about 0.1 A/W for longer wavelengths, e.g., up to about 3.5 microns.

Mazur, Eric (Concord, MA); Carey, III, James E. (Newton, MA)

2011-02-08T23:59:59.000Z

410

Silicon-based visible and near-infrared optoelectric devices  

DOE Patents [OSTI]

In one aspect, the present invention provides a silicon photodetector having a surface layer that is doped with sulfur inclusions with an average concentration in a range of about 0.5 atom percent to about 1.5 atom percent. The surface layer forms a diode junction with an underlying portion of the substrate. A plurality of electrical contacts allow application of a reverse bias voltage to the junction in order to facilitate generation of an electrical signal, e.g., a photocurrent, in response to irradiation of the surface layer. The photodetector exhibits a responsivity greater than about 1 A/W for incident wavelengths in a range of about 250 nm to about 1050 nm, and a responsivity greater than about 0.1 A/W for longer wavelengths, e.g., up to about 3.5 microns.

Mazur, Eric (Concord, MA); Carey, III, James E. (Newton, MA)

2010-08-24T23:59:59.000Z

411

Near Infrared-Sensitive Nanoparticles for Targeted Drug Delivery  

E-Print Network [OSTI]

The invasive nature and undesirable side-effects related to conventional cancer therapy, such as surgery and chemotherapy, have led to the development of novel drug delivery systems (DDS). A minimally invasive DDS using ...

Tan, Mei Chee

412

Umbral Dynamics in the Near Infrared Continuum A. Andic 1  

E-Print Network [OSTI]

not oscillate as the whole, but in distinct areas within the umbra (Socas-Navarro et al. 2009). Socas-Navarro et, while Watanabe et al. (2009) measured the average lifetime as 7.3 minutes. Socas-Navarro et al. (2009

413

Semantically Enabled Exploratory Video Search Jrg Waitelonis  

E-Print Network [OSTI]

. The user enters a query string that might consist out of one or several keywords and Google's web searchSemantically Enabled Exploratory Video Search Jörg Waitelonis joerg comes the challenge of efficient methods in video content management, content-based video search

Weske, Mathias

414

"Enabling the Mission" A Practical Guide to  

E-Print Network [OSTI]

"Enabling the Mission" A Practical Guide to Federal Service Oriented Architecture Version 1.1 June Practical Guide to Federal Service Oriented Architecture The Federal CIO Council Architecture-SIG) Presents: A Practical Guide to Federal Service Oriented Architecture Version 1.1 - June 2008 June 30, 2008

415

Graphene-enabled Wireless Communication Networks  

E-Print Network [OSTI]

Graphene-enabled Wireless Communication Networks at the Nanoscale 1 Ignacio Llatser Nanonetworking;Graphene Honeycomb lattice of carbon atoms 2-dimensional material Discovered by A. K. Geim and K. S. Novoselov 9 Graphene G. Liu, W. Stillman, S. Rumyantsev, Q. Shao, M. Shur, A. A. Balandin, "Low

Politècnica de Catalunya, Universitat

416

MAINTAINING PRIVACY IN RFID ENABLED ENVIRONMENTS  

E-Print Network [OSTI]

future. Yet, as RFID tags enter consumer households and threaten to identify their owners' belongingsMAINTAINING PRIVACY IN RFID ENABLED ENVIRONMENTS Proposal for a disable-model Sarah Spiekermann1 functionality into RFID tags. The present article argues that killing tags at the store exit is, however

Freytag, Johann-Christoph

417

Enabling Sustainable Acquisition by Improving Procurement Systems  

Broader source: Energy.gov [DOE]

Fact sheet describes a case study of the Department of Energy Waste Pilot Plant (WIPP) enabling a sustainable acquisition by improving the procurement systems. The periodic review of the Environmental Management System (EMS) sub-systems is necessary to ensure that desired progress towards environmental objectives is being achieved.

418

Enabling Sustainable Behavior | Interventions in Public Space   

E-Print Network [OSTI]

the urban landscape, can ultimately influence sustainable behavior. This dissertation argues that interventions of bicycle sharing programs and kinetic interactive public lighting are two examples where small objects facilitate pro-sustainable behavior...

Douville, Carmen

2012-08-15T23:59:59.000Z

419

Light-Triggered Myosin Activation for Probing Dynamic Cellular Processes  

E-Print Network [OSTI]

Shining light on myosin: The incorporation of a caging group onto the essential phosphoserine residue of myosin by protein semisynthesis enables light-triggered activation of the protein (see picture). Caging eliminates ...

Goguen, Brenda N.

420

Plasmonic backcontact grating for P3HT:PCBM organic solar cells enabling strong optical  

E-Print Network [OSTI]

Plasmonic backcontact grating for P3HT:PCBM organic solar cells enabling strong optical absorption organic solar cells we propose and demonstrate numerically plasmonic backcontact grating architectures. Simon, L. Escoubas, P. Torchio, J. L. Rouzo, and S. Vedraine, "Light harvesting in organic solar cells

Demir, Hilmi Volkan

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Defense Nuclear Facilities Safety Board's enabling legislation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ENABLING STATUTE OF THE ENABLING STATUTE OF THE DEFENSE NUCLEAR FACILITIES SAFETY BOARD 42 U.S.C. § 2286 et seq. NATIONAL DEFENSE AUTHORIZATION ACT, FISCAL YEAR 1989 (Pub. L. No. 100-456, September 29, 1988), AS AMENDED BY NATIONAL DEFENSE AUTHORIZATION ACT, FISCAL YEAR 1991 (Pub. L. No. 101-510, November 5, 1990), NATIONAL DEFENSE AUTHORIZATION ACT FISCAL YEARS 1992 AND 1993 (Pub. L. No. 102-190, December 5, 1991), ENERGY POLICY ACT OF 1992 (Pub. L. No. 102-486, October 24, 1992), NATIONAL DEFENSE AUTHORIZATION ACT FISCAL YEAR 1994 (Pub. L. No. 103-160, November 30, 1993), FEDERAL REPORTS ELIMINATION ACT OF 1998 (Pub. L. No. 105-362, November 10, 1998), NATIONAL DEFENSE AUTHORIZATION ACT FISCAL YEAR 2001 (Pub. L. No. 106-398, October 30, 2000), AND

422

Utility Energy Services Contracts: Enabling Documents DRAFT  

Broader source: Energy.gov (indexed) [DOE]

Utility Energy Services Contracts: Enabling Documents 2008 Interim Update: Final Draft Prepared for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Federal Energy Management Program November 2008 DOE/GO-102008-2588 www.eere.energy.gov/femp Department of Energy Washington, D.C. Dear Colleagues, The U.S. Department of Energy's (DOE) Federal Energy Management Program (FEMP) is pleased to present this third edition of Utility Energy Services Contracts: Enabling Documents. These documents provide a selected set of background information materials that clarify the authority for federal agencies to enter into utility energy services contracts (UESCs). Since the first edition, UESCs have been used successfully to implement nearly $2 billion in

423

The missing cavities in the SEEDS polarized scattered light images of transitional protoplanetary disks: a generic disk model  

E-Print Network [OSTI]

Transitional circumstellar disks around young stellar objects have a distinctive infrared deficit around 10 microns in their Spectral Energy Distributions (SED), recently measured by the Spitzer Infrared Spectrograph (IRS), suggesting dust depletion in the inner regions. These disks have been confirmed to have giant central cavities by imaging of the submillimeter (sub-mm) continuum emission using the Submillimeter Array (SMA). However, the polarized near-infrared scattered light images for most objects in a systematic IRS/SMA cross sample, obtained by HiCIAO on the Subaru telescope, show no evidence for the cavity, in clear contrast with SMA and Spitzer observations. Radiative transfer modeling indicates that many of these scattered light images are consistent with a smooth spatial distribution for micron-sized grains, with little discontinuity in the surface density of the micron-sized grains at the cavity edge. Here we present a generic disk model that can simultaneously account for the general features in...

Dong, R; Zhu, Z; Hartmann, L; Whitney, B; Brandt, T; Muto, T; Hashimoto, J; Grady, C; Follette, K; Kuzuhara, M; Tanii, R; Itoh, Y; Thalmann, C; Wisniewski, J; Mayama, S; Janson, M; Abe, L; Brandner, W; Carson, J; Egner, S; Feldt, M; Goto, M; Guyon, O; Hayano, Y; Hayashi, M; Hayashi, S; Henning, T; Hodapp, K W; Honda, M; Inutsuka, S; Ishii, M; Iye, M; Kandori, R; Knapp, G R; Kudo, T; Kusakabe, N; Matsuo, T; McElwain, M W; Miyama, S; Morino, J -I; Moro-Martin, A; Nishimura, T; Pyo, T -S; Suto, H; Suzuki, R; Takami, M; Takato, N; Terada, H; Tomono, D; Turner, E L; Watanabe, M; Yamada, T; Takami, H; Usuda, T; Tamura, M

2012-01-01T23:59:59.000Z

424

Separation of changes in light scattering and chromophore concentrations during cortical spreading depression in rats  

Science Journals Connector (OSTI)

We used near-infrared spectroscopy to separate tissue scattering changes from changes in cerebral oxyhemoglobin and deoxyhemoglobin and the redox state of cytochrome- c -oxidase. A...

Kohl, Matthias; Lindauer, Ute; Dirnagl, Ulrich; Villringer, Arno

1998-01-01T23:59:59.000Z

425

Tailoring broadband light trapping of GaAs and Si substrates by self-organised nanopatterning  

SciTech Connect (OSTI)

We report on the formation of high aspect ratio anisotropic nanopatterns on crystalline GaAs (100) and Si (100) substrates exploiting defocused Ion Beam Sputtering assisted by a sacrificial self-organised Au stencil mask. The tailored optical properties of the substrates are characterised in terms of total reflectivity and haze by means of integrating sphere measurements as a function of the morphological modification at increasing ion fluence. Refractive index grading from sub-wavelength surface features induces polarisation dependent anti-reflection behaviour in the visible-near infrared (VIS-NIR) range, while light scattering at off-specular angles from larger structures leads to very high values of the haze functions in reflection. The results, obtained for an important class of technologically relevant materials, are appealing in view of photovoltaic and photonic applications aiming at photon harvesting in ultrathin crystalline solar cells.

Martella, C.; Chiappe, D.; Mennucci, C.; Buatier de Mongeot, F. [Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146 Genova (Italy)

2014-05-21T23:59:59.000Z

426

Sandia National Laboratories: Low--Temperature Combustion Enables...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ECFacilitiesCRFLow--Temperature Combustion Enables Cleaner, More Efficient Engines Low--Temperature Combustion Enables Cleaner, More Efficient Engines Assessing the Economic...

427

Enabling High Efficiency Ethanol Engines | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Enabling High Efficiency Ethanol Engines Enabling High Efficiency Ethanol Engines 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

428

Advanced Combustion Technology to Enable High Efficiency Clean...  

Broader source: Energy.gov (indexed) [DOE]

Combustion Technology to Enable High Efficiency Clean Combustion Advanced Combustion Technology to Enable High Efficiency Clean Combustion Summary of advanced combustion research...

429

Chrysler: Save Energy Now Assessment Enables a Vehicle Assembly...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Save Energy Now Assessment Enables a Vehicle Assembly Complex to Achieve Significant Natural Gas Savings Chrysler: Save Energy Now Assessment Enables a Vehicle Assembly...

430

Requirements for the Valve Train and Technolgies for Enabling...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

for the Valve Train and Technolgies for Enabling HCCI over the Entire Operating Range Requirements for the Valve Train and Technolgies for Enabling HCCI over the Entire Operating...

431

CHP: Enabling Resilient Energy Infrastructure for Critical Facilities...  

Energy Savers [EERE]

CHP: Enabling Resilient Energy Infrastructure for Critical Facilities - Report, March 2013 CHP: Enabling Resilient Energy Infrastructure for Critical Facilities - Report, March...

432

Bioproducts: Enabling Biofuels and Growing the Bioeconomy | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Bioproducts: Enabling Biofuels and Growing the Bioeconomy Bioproducts: Enabling Biofuels and Growing the Bioeconomy Breakout Session 2B-Integration of Supply Chains II:...

433

Enabling Small-Scale Biomass Gasification for Liquid Fuel Production...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Enabling Small-Scale Biomass Gasification for Liquid Fuel Production Enabling Small-Scale Biomass Gasification for Liquid Fuel Production Breakout Session 2A-Conversion...

434

Combined Heat and Power System Enables 100% Reliability at Leading...  

Broader source: Energy.gov (indexed) [DOE]

Enables 100% Reliability at Leading Medical Campus - Case Study, 2013 Combined Heat and Power System Enables 100% Reliability at Leading Medical Campus - Case Study, 2013 Thermal...

435

Financing and Revenue: Crowd Funding: Enabling Small Investors...  

Broader source: Energy.gov (indexed) [DOE]

Financing and Revenue: Crowd Funding: Enabling Small Investors to Help Fund Business Loans for E3 Upgrades Peer Exchange Call Financing and Revenue: Crowd Funding: Enabling Small...

436

American Institute of Architects 2030 Commitment Enabled by Energy...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

American Institute of Architects 2030 Commitment Enabled by Energy IQ - 2014 BTO Peer Review American Institute of Architects 2030 Commitment Enabled by Energy IQ - 2014 BTO Peer...

437

Micro- & Nano-Technologies Enabling More Compact, Lightweight...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Micro- & Nano-Technologies Enabling More Compact, Lightweight Thermoelectric Power Generation & Cooling Systems Micro- & Nano-Technologies Enabling More Compact, Lightweight...

438

Ultra-precision: enabling our future  

Science Journals Connector (OSTI)

...supply based on the principle of nuclear fusion...concentrated solar photovoltaic (CSP) systems...light onto the photovoltaic (PV) junction...enunciates the principle, to measure what...The materials and methods of sculpture...N. 1974 On the basic concept of nano-technology...

2012-01-01T23:59:59.000Z

439

Light Portal  

Science Journals Connector (OSTI)

The Light Portal was designed to organize and mark the pedestrian paths that circumnavigate the rectangle of the...

2006-01-01T23:59:59.000Z

440

Utility Energy Services Contracts: Enabling Documents Update  

Broader source: Energy.gov (indexed) [DOE]

Documents Documents Update San Diego, CA November 28, 2007 Deb Beattie & Karen Thomas Overview  Legislative & Executive Actions  Legal Opinions  Agency Guidance  Contracts  Sample Documents  Resources www.eere.energy.gov/femp/pdfs/28792.pdf Enabling Legislation for Utility Programs Energy Policy Act of 1992 Section 152(f) - Utility Incentive Programs Section 152(f) - Utility Incentive Programs Agencies:  Are authorized and encouraged to participate in utility programs generally available to customers  May accept utility financial incentives, goods, and services generally available to customers  Are encouraged to enter into negotiations with utilities to design cost effective programs to address unique needs of facilities used by agency

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Light's twist  

Science Journals Connector (OSTI)

...equal to the optical power divided by the speed of light, and hence go unnoticed in our everyday lives...approaching object equal to the power in the light beam (P) divided by the speed of light. The movement of the approaching object does...

2014-01-01T23:59:59.000Z

442

Light Properties Light travels at the speed of light `c'  

E-Print Network [OSTI]

LIGHT!! #12;Light Properties Light travels at the speed of light `c' C = 3 x 108 m/s Or 190.nasa.gov #12;The speed of light The speed of light `c' is equal to the frequency ` times the wavelength,000 miles/second!! Light could travel around the world about 8 times in one second #12;What is light?? Light

Mojzsis, Stephen J.

443

Lighting Systems  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Purple LED lamp Purple LED lamp Lighting Systems Lighting research is aimed at improving the energy efficiency of lighting systems in buildings and homes across the nation. The goal is to reduce lighting energy consumption by 50% over twenty years by improving the efficiency of light sources, and controlling and delivering illumination so that it is available, where and when needed, and at the required intensity. Research falls into four main areas: Sources and Ballasts, Light Distribution Systems, Controls and Communications, and Human Factors. Contacts Francis Rubinstein FMRubinstein@lbl.gov (510) 486-4096 Links Lighting Research Group Batteries and Fuel Cells Buildings Energy Efficiency Applications Commercial Buildings Cool Roofs and Heat Islands Demand Response Energy Efficiency Program and Market Trends

444

Acoustics of technology enabled collaborative learning environments.  

Science Journals Connector (OSTI)

Collaborative classrooms and workstations are increasingly common in higher education buildings. These spaces present unique acoustical challenges that force designers to rethink traditional concepts and solutions. In student?centered classrooms the lecturer is removed as the visual and acoustical center of attention. Instead students are seated in groups around technology enabled workstations often facing away from the lecturer and other students. Acoustical conditions must support small?group interaction classroom discussion and learning via multimedia content. Outside the classroom collaborative workstations vary greatly but typically facilitate small?group interaction around a multimedia display and/or work surface. To promote impromptu use by students these spaces are often open to highly public areas of learning commons classroom buildings and digital libraries. Traditional noise control solutions fail to isolate these spaces without compromising their spontaneous feel and function. Despite obvious acoustical challenges both space types will continue to proliferate and new acoustical solutions must be developed.

Gregory A. Coudriet; Jeffery E. Babich

2010-01-01T23:59:59.000Z

445

Lighting Renovations  

Broader source: Energy.gov [DOE]

When undertaking a lighting renovation in a Federal building, daylighting is the primary renewable energy opportunity. Photovoltaics (PV) also present an excellent opportunity. While this guide...

446

Cerenkov Light  

ScienceCinema (OSTI)

The bright blue glow from nuclear reactors is Cerenkov light. Karl Slifer describes how nuclear physicists can use this phenomenon to study the nucleus of the atom.

Slifer, Karl

2014-05-22T23:59:59.000Z

447

Enabling Technologies for Ceramic Hot Section Components  

SciTech Connect (OSTI)

Silicon-based ceramics are attractive materials for use in gas turbine engine hot sections due to their high temperature mechanical and physical properties as well as lower density than metals. The advantages of utilizing ceramic hot section components include weight reduction, and improved efficiency as well as enhanced power output and lower emissions as a result of reducing or eliminating cooling. Potential gas turbine ceramic components for industrial, commercial and/or military high temperature turbine applications include combustor liners, vanes, rotors, and shrouds. These components require materials that can withstand high temperatures and pressures for long duration under steam-rich environments. For Navy applications, ceramic hot section components have the potential to increase the operation range. The amount of weight reduced by utilizing a lighter gas turbine can be used to increase fuel storage capacity while a more efficient gas turbine consumes less fuel. Both improvements enable a longer operation range for Navy ships and aircraft. Ceramic hot section components will also be beneficial to the Navy's Growth Joint Strike Fighter (JSF) and VAATE (Versatile Affordable Advanced Turbine Engines) initiatives in terms of reduced weight, cooling air savings, and capability/cost index (CCI). For DOE applications, ceramic hot section components provide an avenue to achieve low emissions while improving efficiency. Combustors made of ceramic material can withstand higher wall temperatures and require less cooling air. Ability of the ceramics to withstand high temperatures enables novel combustor designs that have reduced NO{sub x}, smoke and CO levels. In the turbine section, ceramic vanes and blades do not require sophisticated cooling schemes currently used for metal components. The saved cooling air could be used to further improve efficiency and power output. The objectives of this contract were to develop technologies critical for ceramic hot section components for gas turbine engines. Significant technical progress has been made towards maturation of the EBC and CMC technologies for incorporation into gas turbine engine hot-section. Promising EBC candidates for longer life and/or higher temperature applications relative to current state of the art BSAS-based EBCs have been identified. These next generation coating systems have been scaled-up from coupons to components and are currently being field tested in Solar Centaur 50S engine. CMC combustor liners were designed, fabricated and tested in a FT8 sector rig to demonstrate the benefits of a high temperature material system. Pretest predictions made through the use of perfectly stirred reactor models showed a 2-3x benefit in CO emissions for CMC versus metallic liners. The sector-rig test validated the pretest predictions with >2x benefit in CO at the same NOx levels at various load conditions. The CMC liners also survived several trip shut downs thereby validating the CMC design methodology. Significant technical progress has been made towards incorporation of ceramic matrix composites (CMC) and environmental barrier coatings (EBC) technologies into gas turbine engine hot-section. The second phase of the program focused on the demonstration of a reverse flow annular CMC combustor. This has included overcoming the challenges of design and fabrication of CMCs into 'complex' shapes; developing processing to apply EBCs to 'engine hardware'; testing of an advanced combustor enabled by CMCs in a PW206 rig; and the validation of performance benefits against a metal baseline. The rig test validated many of the pretest predictions with a 40-50% reduction in pattern factor compared to the baseline and reductions in NOx levels at maximum power conditions. The next steps are to develop an understanding of the life limiting mechanisms in EBC and CMC materials, developing a design system for EBC coated CMCs and durability testing in an engine environment.

Venkat Vedula; Tania Bhatia

2009-04-30T23:59:59.000Z

448

Northern Lights  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Northern Lights Northern Lights Nature Bulletin No. 178-A February 6, 1965 Forest Preserve District of Cook County Seymour Simon, President Roland F. Eisenbeis, Supt. of Conservation NORTHERN LIGHTS To a person seeing the Aurora Borealis or "northern lights" for the first time, it is an uncanny awe-inspiring spectacle. Sometimes it begins as a glow of red on the northern horizon, ominously suggesting a great fire, gradually changing to a curtain of violet-white, or greenish-yellow light extending from east to west. Some times this may be transformed to appear as fold upon fold of luminous draperies that march majestically across the sky; sometimes as a vast multitude of gigantic flaming swords furiously slashing at the heavens; sometimes as a flowing crown with long undulating colored streamers fanning downward and outward.

449

Low-cost electrochemical treatment of indium tin oxide anodes for high-efficiency organic light-emitting diodes  

SciTech Connect (OSTI)

We demonstrate a simple low-cost approach as an alternative to conventional O{sub 2} plasma treatment to modify the surface of indium tin oxide (ITO) anodes for use in organic light-emitting diodes. ITO is functionalized with F{sup ?} ions by electrochemical treatment in dilute hydrofluoric acid. An electrode with a work function of 5.2?eV is achieved following fluorination. Using this electrode, a maximum external quantum efficiency of 26.0% (91?cd/A, 102?lm/W) is obtained, which is 12% higher than that of a device using the O{sub 2} plasma-treated ITO. Fluorination also increases the transparency in the near-infrared region.

Hui Cheng, Chuan, E-mail: chengchuanhui@dlut.edu.cn; Shan Liang, Ze; Gang Wang, Li; Dong Gao, Guo; Zhou, Ting; Ming Bian, Ji; Min Luo, Ying [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Tong Du, Guo, E-mail: dugt@dlut.edu.cn [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012 (China)

2014-01-27T23:59:59.000Z

450

Solar Sail Propulsion: An Enabling Technology for Fundamental Physics Missions  

Science Journals Connector (OSTI)

Solar sails enable a wide range of high- ... system. They are also an enabling propulsion technology for two types of deep-space missions ... and the large-scale gravitational field of the solar system: the first...

Bernd Dachwald; Wolfgang Seboldt; Claus Lammerzahl

2008-01-01T23:59:59.000Z

451

Wind Turbine Scaling Enables Projects to Reach New Heights |...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Turbine Scaling Enables Projects to Reach New Heights Wind Turbine Scaling Enables Projects to Reach New Heights August 18, 2014 - 9:42am Addthis Turbines at the National Wind...

452

Minimal Proton Channel Enables H2 Oxidation and Production with...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Minimal Proton Channel Enables H2 Oxidation and Production with a Water-Soluble Nickel-Based Catalyst. Minimal Proton Channel Enables H2 Oxidation and Production with a...

453

'Insights of the Decade' Enabled by NERSC - NERSC Center News...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of the Decade' Enabled by NERSC 'Insights of the Decade' Enabled by NERSC Three of Ten Used NERSC Resources, Expertise February 10, 2011 2011-01-31-Breakthroughs-1.gif The...

454

"Nanotechnology Enabled Advanced Industrial Heat Transfer Fluids"  

SciTech Connect (OSTI)

ABSTRACT Nanotechnology Enabled Advanced industrial Heat Transfer Fluids” Improving the efficiency of Industrial Heat Exchangers offers a great opportunity to improve overall process efficiencies in diverse industries such as pharmaceutical, materials manufacturing and food processing. The higher efficiencies can come in part from improved heat transfer during both cooling and heating of the material being processed. Additionally, there is great interest in enhancing the performance and reducing the weight of heat exchangers used in automotives in order to increase fuel efficiency. The goal of the Phase I program was to develop nanoparticle containing heat transfer fluids (e.g., antifreeze, water, silicone and hydrocarbon-based oils) that are used in transportation and in the chemical industry for heating, cooling and recovering waste heat. Much work has been done to date at investigating the potential use of nanoparticle-enhanced thermal fluids to improve heat transfer in heat exchangers. In most cases the effect in a commercial heat transfer fluid has been marginal at best. In the Phase I work, we demonstrated that the thermal conductivity, and hence heat transfer, of a fluid containing nanoparticles can be dramatically increased when subjected to an external influence. The increase in thermal conductivity was significantly larger than what is predicted by commonly used thermal models for two-phase materials. Additionally, the surface of the nanoparticles was engineered so as to have a minimal influence on the viscosity of the fluid. As a result, a nanoparticle-laden fluid was successfully developed that can lead to enhanced heat transfer in both industrial and automotive heat exchangers

Dr. Ganesh Skandan; Dr. Amit Singhal; Mr. Kenneth Eberts; Mr. Damian Sobrevilla; Prof. Jerry Shan; Stephen Tse; Toby Rossmann

2008-06-12T23:59:59.000Z

455

Visible Light Communications (VLC) for Ambient Assisted Living  

Science Journals Connector (OSTI)

With the advent of high efficacy light emitting diode directional lamps as a key component in focal lighting, new possibilities emerge for re-designing the smart home scenario. A smart home scenario is characterized by enabled intelligent interworking ... Keywords: Ambient lighting, High connectivity, LED, Low rate, PD, VLC

Ambuj Kumar, Albena Mihovska, Sofoklis Kyriazakos, Ramjee Prasad

2014-10-01T23:59:59.000Z

456

GE Appliances and Lighting Home Energy Solutions  

Broader source: Energy.gov (indexed) [DOE]

GE Appliances and Lighting GE Appliances and Lighting Home Energy Solutions Introduction to Devices with Brillion(tm) Technology Portfolio of Products 3 GE Appliances and Lighting All Rights Reserved Brillion(tm) Suite of Home Energy Solutions Nucleus(tm) Smart Meter Other Devices Internet IHD Other Devices PCT Non-Meter Solution GE DRMS GEA Server 4 GE Appliances and Lighting All Rights Reserved Nucleus(tm) energy manager with Brillion(tm) technology Consumers can reduce electric usage by an average of 5% per year. 5 GE Appliances and Lighting All Rights Reserved GE Profile Appliances enabled with Brillion(tm) technology Delayed defrost during peak Delayed starts and temperature adjustments during peak Delayed start until off- peak Reduced energy usage 60%, DR- enabled Reduced wattage during peak When coupled with the Nucleus and a TOU

457

Solid-State Lighting: LED Lighting Facts  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Market-Based Programs Printable Version Share this resource Send a link to Solid-State Lighting: LED Lighting Facts to someone by E-mail Share Solid-State Lighting: LED Lighting Facts on Facebook Tweet about Solid-State Lighting: LED Lighting Facts on Twitter Bookmark Solid-State Lighting: LED Lighting Facts on Google Bookmark Solid-State Lighting: LED Lighting Facts on Delicious Rank Solid-State Lighting: LED Lighting Facts on Digg Find More places to share Solid-State Lighting: LED Lighting Facts on AddThis.com... LED Lighting Facts CALiPER Program Standards Development Technical Information Network Gateway Demonstrations Municipal Consortium Design Competitions LED Lighting Facts LED lighting facts - A Program of the U.S. DOE DOE's LED Lighting Facts® program showcases LED products for general

458

Federal Energy Management Program: ESPC ENABLE Procurement Process  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Procurement Process to someone by E-mail Procurement Process to someone by E-mail Share Federal Energy Management Program: ESPC ENABLE Procurement Process on Facebook Tweet about Federal Energy Management Program: ESPC ENABLE Procurement Process on Twitter Bookmark Federal Energy Management Program: ESPC ENABLE Procurement Process on Google Bookmark Federal Energy Management Program: ESPC ENABLE Procurement Process on Delicious Rank Federal Energy Management Program: ESPC ENABLE Procurement Process on Digg Find More places to share Federal Energy Management Program: ESPC ENABLE Procurement Process on AddThis.com... Energy Savings Performance Contracts ENABLE Procurement Process Energy Service Company Options Project Assistance & Training Utility Energy Service Contracts On-Site Renewable Power Purchase Agreements

459

ESPC ENABLE Energy Service Companies | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

ENABLE » ESPC ENABLE Energy Service Companies ENABLE » ESPC ENABLE Energy Service Companies ESPC ENABLE Energy Service Companies October 7, 2013 - 2:13pm Addthis Energy Savings Performance Contract (ESPC) ENABLE projects use General Services Administration (GSA) Federal Supply Schedule 84, SIN 246-53 to select a qualified energy service company (ESCO). The ESCO is required to go through a two-step qualification process to become an eligible ESPC ENABLE or Schedule 84 service provider. The two-step process includes becoming U.S. Department of Energy (DOE) qualified then being awarded a contract under the GSA Schedule. The Federal Energy Management Program (FEMP) maintains a qualifications process for ESCOs interested in offering ESPC services. All ESCOs on Schedule 84, SIN 246-53 are required to be DOE-qualified prior to being

460

Building Technologies Office: Nano-Enabled Titanium Dioxide Ultraviolet  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Nano-Enabled Titanium Nano-Enabled Titanium Dioxide Ultraviolet Protective Layers for Cool-Color Roofing Research Project to someone by E-mail Share Building Technologies Office: Nano-Enabled Titanium Dioxide Ultraviolet Protective Layers for Cool-Color Roofing Research Project on Facebook Tweet about Building Technologies Office: Nano-Enabled Titanium Dioxide Ultraviolet Protective Layers for Cool-Color Roofing Research Project on Twitter Bookmark Building Technologies Office: Nano-Enabled Titanium Dioxide Ultraviolet Protective Layers for Cool-Color Roofing Research Project on Google Bookmark Building Technologies Office: Nano-Enabled Titanium Dioxide Ultraviolet Protective Layers for Cool-Color Roofing Research Project on Delicious Rank Building Technologies Office: Nano-Enabled Titanium Dioxide

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Advanced Combustion Concepts- Enabling Systems and Solutions (ACCESS) for High Efficiency Light Duty Vehicles  

Broader source: Energy.gov [DOE]

2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation

462

Design of a Personalized Lighting Control System Enabled by a Space Model  

E-Print Network [OSTI]

-functional system requirements which inform system design. The structure of a proposed space model and space model queries are described and illustrated with examples. Implementation environments for system modules and data communication between modules...

Suter, G.; Petrushevski, F.; Sipetic, M.

2011-01-01T23:59:59.000Z

463

Advanced Combustion Concepts- Enabling Systems and Solutions (ACCESS) for High Efficiency Light Duty Vehicles  

Broader source: Energy.gov [DOE]

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

464

Advanced Combustion Concepts- Enabling Systems and Solutions (ACCESS) for High Efficiency Light Duty Vehicles  

Broader source: Energy.gov [DOE]

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

465

16/05/12 3:58 PMFloating robots use GPS-enabled smartphones to track water flow Page 1 of 5http://www.spacedaily.com/reports/Floating_robots_use_GPS_enabled_smartphones_to_track_water_flow_999.html  

E-Print Network [OSTI]

can shed light on processes that are influenced by how water moves, such as the spread of pollutants, the migration of salmon or how salt and fresh water . Buy Advertising Editorial Enquiries GPS Fleet Tracking See/reports/Floating_robots_use_GPS_enabled_smartphones_to_track_water_flow_999.html spread of pollutants

466

Hardware Accelerated Image-Based Rendering with Compressed Surface Light Fields and Multiresolution Geometry  

Science Journals Connector (OSTI)

Surface Light Fields(SLF) are light fields parameterized to the surface ... context of rendering from compressed representation of the SLF. We further extend this aproach to enable hardware-accelerated SLF render...

Masaki Kitahara; Shinya Shimizu…

2005-01-01T23:59:59.000Z

467

Light trapping in thin-film solar cells measured by Raman spectroscopy  

SciTech Connect (OSTI)

In this study, Raman spectroscopy is used as a tool to determine the light-trapping capability of textured ZnO front electrodes implemented in microcrystalline silicon (?c-Si:H) solar cells. Microcrystalline silicon films deposited on superstrates of various roughnesses are characterized by Raman micro-spectroscopy at excitation wavelengths of 442?nm, 514?nm, 633?nm, and 785?nm, respectively. The way to measure quantitatively and with a high level of reproducibility the Raman intensity is described in details. By varying the superstrate texture and with it the light trapping in the ?c-Si:H absorber layer, we find significant differences in the absolute Raman intensity measured in the near infrared wavelength region (where light trapping is relevant). A good agreement between the absolute Raman intensity and the external quantum efficiency of the ?c-Si:H solar cells is obtained, demonstrating the validity of the introduced method. Applications to thin-film solar cells, in general, and other optoelectronic devices are discussed.

Ledinský, M., E-mail: ledinsky@fzu.cz [Laboratory of Nanostructures and Nanomaterials, Institute of Physics, Academy of Sciences of the Czech Republic, v. v. i., Cukrovarnická 10, 162 00 Prague (Czech Republic); Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering (IMT), École Polytechnique Fédérale de Lausanne (EPFL), Rue de la Maladière 71b, CH-2000 Neuchâtel (Switzerland); Moulin, E.; Bugnon, G.; Meillaud, F.; Ballif, C. [Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering (IMT), École Polytechnique Fédérale de Lausanne (EPFL), Rue de la Maladière 71b, CH-2000 Neuchâtel (Switzerland); Ganzerová, K.; Vetushka, A.; Fejfar, A. [Laboratory of Nanostructures and Nanomaterials, Institute of Physics, Academy of Sciences of the Czech Republic, v. v. i., Cukrovarnická 10, 162 00 Prague (Czech Republic)

2014-09-15T23:59:59.000Z

468

Federal Energy Management Program: ESPC ENABLE Energy Service Company  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ENABLE Energy Service Company Options ENABLE Energy Service Company Options Become an ESPC ENABLE Program ESCO These resources offer information related to becoming an ESPC ENABLE program ESCO: Applying for the DOE Qualified List of Energy Service Companies GSA Schedules GSA Advantage Vendor Start-Up Kit GSA Schedules News and Training GSA Eligibility to Use GSA Sources of Supply and Services Energy Savings Performance Contract (ESPC) ENABLE projects use General Services Administration (GSA) Federal Supply Schedule 84, SIN 246-53 to select a qualified Energy Services Company (ESCO). The ESCO is required to go through a two-step qualification process to become an eligible ESPC ENABLE or Schedule 84 service provider. The two-step process includes first, becoming Department of Energy (DOE)- qualified and second, being awarded a contract under the GSA Schedule.

469

Enabling High Efficiency Clean Combustion with Micro-Variable...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

of variable orifice fuel injector are described that will extend the operation maps of early PCCI combustion and enable dual-mode combustion over full operating maps....

470

FEMP Expands ESPC ENABLE Program to Include More Energy Conservation...  

Energy Savers [EERE]

(ESPC) ENABLE program to include two new energy conservation measures (ECMs): solar photovoltaic (PV) and simple one-for-one heating, ventilation, and air conditioning (HVAC)...

471

ESPC ENABLE Webinar for ESCOs Question and Answer Recap | Department...  

Broader source: Energy.gov (indexed) [DOE]

& Publications Energy Savings Contracts Webinar, May 20, 2013 ESPC ENABLE Webinar for ESCOs Guide to Government Witnessing and Review of Measurement and Verification Activities...

472

Ex Parte Memorandum on Grid-Enabled Water Heaters | Department...  

Energy Savers [EERE]

with DOE representatives regarding water heater standards and thermal storage and demand response programs. DOE exparte memo100213 Grid-EnabledWaterHeaterAmendment More...

473

Solid State Processing of New Low Cost Titanium Powders Enabling...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Enabling Affordable Automotive Components Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit,...

474

Combined Heat and Power System Enables 100% Reliability at Leading...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

buildings on nearly 1,000 acres. Photo courtesy of Thermal Energy Corporation Combined Heat and Power System Enables 100% Reliability at Leading Medical Campus Recovery Act...

475

Enabling Green Energy and Propulsion Systems via Direct Noise...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Umesh Paliath, GE Global Research; Joe Insley, Argonne National Laboratory Enabling Green Energy and Propulsion Systems via Direct Noise Computation PI Name: Umesh Paliath PI...

476

Enabling Green Energy and Propulsion Systems via Direct Noise...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

GE propulsion systems Enabling Green Energy and Propulsion Systems via Direct Noise Computation PI Name: Umesh Paliath PI Email: paliath@ge.com Institution: GE Global Research...

477

Light's twist  

Science Journals Connector (OSTI)

...Glasgow G12 8QQ, UK An invited Perspective to mark the election of Miles Padgett to the fellowship of the Royal Society in 2014. That...energy and momentum flow within light beams can twist to form vortices such as eddies in a stream. These...

2014-01-01T23:59:59.000Z

478

Primal-dual coding to probe light transport  

E-Print Network [OSTI]

We present primal-dual coding, a photography technique that enables direct fine-grain control over which light paths contribute to a photo. We achieve this by projecting a sequence of patterns onto the scene while the ...

O'Toole, Matthew

479

Texas Electric Lighting Report  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

electric lighting electric lighting The SNAP House's lighting design aims for elegant simplicity in concept, use, and maintenance. Throughout the house, soft, ambient light is juxtaposed with bright, direct task lighting. All ambient and most task lighting is integrated directly into the architectural design of the house. An accent light wall between the bedroom and bathroom provides a glowing light for nighttime navigation.

480

ESPC ENABLE Request for Quote/Notice of Opportunity Template  

Broader source: Energy.gov [DOE]

Template serves as a tool for creating and issuing an agency Request for Quotes/Notice of Opportunity (RFQ/NOO) for an Energy Savings Performance Contract (ESPC) ENABLE project. The RFQ/NOO is the second formal step in the ESPC ENABLE process, following the development of the acquisition plan.

Note: This page contains sample records for the topic "near-infrared light enabling" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Graphene-enabled Wireless Networks-on-Chip (Invited Paper)  

E-Print Network [OSTI]

Graphene-enabled Wireless Networks-on-Chip (Invited Paper) Ignacio Llatser, Sergi Abadal, Albert,abadal,amestres,acabello}@ac.upc.edu, eduard.alarcon@upc.edu Abstract--Graphene-enabled Wireless Communications (GWC) advocate for the use of graphene-based plasmonic antennas, or graphennas, which take advantage of the plasmonic properties

Politècnica de Catalunya, Universitat

482

ENABLING ENERGY DEMAND RESPONSE WITH VEHICULAR MESH NETWORKS  

E-Print Network [OSTI]

ENABLING ENERGY DEMAND RESPONSE WITH VEHICULAR MESH NETWORKS Howard CheHao Chang1, Haining Du2. Using VMesh to connect disjoint sensor networks One of our expectations for VMesh is to enable demand response (DR) [1] for automatic utility usage retrievals and price dispatching. DR is a project in- itiated

Chuah, Chen-Nee

483

Graphene-enabled Wireless Communication for Massive Multicore Architectures  

E-Print Network [OSTI]

Graphene-enabled Wireless Communication for Massive Multicore Architectures Sergi Abadal, Eduard. This goal is feasible by using graphene-based planar antennas, which can radiate signals at the Terahertz, this is the first work that discusses the utilization of graphene-enabled wireless communication for massive

Cabellos-Aparicio, Albert

484

Technology Challenges in Designing the Future Grid to Enable  

E-Print Network [OSTI]

Technology Challenges in Designing the Future Grid to Enable Sustainable Energy Systems Future Grid the Future Electric Energy System #12;Technology Challenges in Designing the Future Grid to Enable Summary This white paper synthesizes technology challenges for reaching a vision of the future grid that

485

ESPC ENABLE Webinar for ESCOs Question and Answer Recap  

Broader source: Energy.gov (indexed) [DOE]

ESPC ENABLE Webinar for ESCOs ESPC ENABLE Webinar for ESCOs Question and Answer Session Recap 9/13/2012 ESPC ENABLE Program, Process, and General Questions - Question: Would a copy of these slides be available to the attendees? Answer: Yes, we will be sending them out and posting them on the FEMP website after the webinar. The ESPC ENABLE Website is: http://www1.eere.energy.gov/femp/financing/espc_enable.html Question: Will agencies be permitted to combine financing and appropriations? Answer: It would certainly be allowed, however, it is expected that the majority of the target sites will not have appropriations to apply to these projects. Question: It was mentioned that Option A is used for M&V. Do you require measurement under Option A of loads and operating hours or can they be stipulated such as typical M&V Guidelines may allow?

486

Microfield exposure tool enables advances in EUV lithography development  

SciTech Connect (OSTI)

With demonstrated resist resolution of 20 nm half pitch, the SEMATECH Berkeley BUV microfield exposure tool continues to push crucial advances in the areas of BUY resists and masks. The ever progressing shrink in computer chip feature sizes has been fueled over the years by a continual reduction in the wavelength of light used to pattern the chips. Recently, this trend has been threatened by unavailability of lens materials suitable for wavelengths shorter than 193 nm. To circumvent this roadblock, a reflective technology utilizing a significantly shorter extreme ultraviolet (EUV) wavelength (13.5 nm) has been under development for the past decade. The dramatic wavelength shrink was required to compensate for optical design limitations intrinsic in mirror-based systems compared to refractive lens systems. With this significant reduction in wavelength comes a variety of new challenges including developing sources of adequate power, photoresists with suitable resolution, sensitivity, and line-edge roughness characteristics, as well as the fabrication of reflection masks with zero defects. While source development can proceed in the absence of available exposure tools, in order for progress to be made in the areas of resists and masks it is crucial to have access to advanced exposure tools with resolutions equal to or better than that expected from initial production tools. These advanced development tools, however, need not be full field tools. Also, implementing such tools at synchrotron facilities allows them to be developed independent of the availability of reliable stand-alone BUY sources. One such tool is the SEMATECH Berkeley microfield exposure tool (MET). The most unique attribute of the SEMA TECH Berkeley MET is its use of a custom-coherence illuminator made possible by its implementation on a synchrotron beamline. With only conventional illumination and conventional binary masks, the resolution limit of the 0.3-NA optic is approximately 25 nm, however, with EUV not expected in production before the 22-nm half pitch node even finer resolution capabilities are now required from development tools. The SEMATECH Berkeley MET's custom-coherence illuminator allows it to be used with aggressive modified illumination enabling kJ factors as low as 0.25. Noting that the lithographic resolution of an exposure tool is defined as k{sub 1}{lambda}/NA, yielding an ultimate resolution limit of 11 nm. To achieve sub-20-nm aerial-image resolution while avoiding forbidden pitches on Manhattan-geometry features with the centrally-obscured MET optic, a 45-degree oriented dipole pupil fill is used. Figure 1 shows the computed aerial-image contrast as a function of half pitch for a dipole pupil fill optimized to print down to the 19-nm half pitch level. This is achieved with relatively uniform performance at larger dimensions. Using this illumination, printing down to the 20-nm half pitch level has been demonstrated in chemically amplified resists as shown in Fig. 2. The SEMATECH Berkeley MET tool plays a crucial role in the advancement of EUV resists. The unique programmable coherence properties of this tool enable it to achieve higher resolution than other EUV projection tools. As presented here, over the past year the tool has been used to demonstrate resist resolutions of 20 half pitch. Although not discussed here, because the Berkeley MET tool is a true projection lithography tool, it also plays a crucial role in advanced EUV mask research. Examples of the work done in this area include defect printability, mask architecture, and phase shift masks.

Naulleau, Patrick

2009-09-07T23:59:59.000Z

487

Utility Energy Services Contracts: Enabling Documents, May 2009 (Revised) (Book)  

Broader source: Energy.gov (indexed) [DOE]

www.femp.energy.gov ENERGY U.S. DEPARTMENT OF Energy Efficiency & Renewable Energy Utility Energy Services Contracts: Enabling Documents Prepared for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Federal Energy Management Program Revised June 2013 DOE/GO-102009-2588 UESCs: Enabling Documents 1 Department of Energy Washington, D.C. Dear Colleagues, The U.S. Department of Energy's (DOE) Federal Energy Management Program (FEMP) is pleased to present this third edition of Utility Energy Services Contracts: Enabling Documents. These documents provide a selected set of background information materials that clarify the authority for Federal agencies to enter into utility energy services

488

EV Everywhere Grand Challenge - Charging Infrastructure Enabling Flexible EV Design  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Charging Infrastructure Charging Infrastructure Enabling Flexible EV Design July 30, 2012 Lee Slezak Technology Manager, Vehicle Systems Vehicle Technologies Program U.S. Department of Energy 1000 Independence Avenue Washington DC 20585 eere.energy.gov Outline * Purpose - Establish Vision for Achieving EV Everywhere * Enable Strong Demand for EVs * Supply of Vehicles and Infrastructure * Current Status of Infrastructure and Vehicles * Desired Workshop Outputs * Approach - Design Candidate Infrastructure Strategies for 2022 10/12/2012 2 eere.energy.gov Achieving EV Everywhere - Enable Strong Demand for EVs 10/12/2012 3 EV Everywhere Consumer Acceptance EV Everywhere Consumer Acceptance Electric Vehicles * Safe * Cost Competitive * Utility meets consumer needs * Range

489

Utility Energy Services Contracts: Enabling Documents, May 2009 (Revised) (Book)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

www.femp.energy.gov ENERGY U.S. DEPARTMENT OF Energy Efficiency & Renewable Energy Utility Energy Services Contracts: Enabling Documents Prepared for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Federal Energy Management Program Revised June 2013 DOE/GO-102009-2588 UESCs: Enabling Documents 1 Department of Energy Washington, D.C. Dear Colleagues, The U.S. Department of Energy's (DOE) Federal Energy Management Program (FEMP) is pleased to present this third edition of Utility Energy Services Contracts: Enabling Documents. These documents provide a selected set of background information materials that clarify the authority for Federal agencies to enter into utility energy services

490

THE CASE OF AB AURIGAE'S DISK IN POLARIZED LIGHT: IS THERE TRULY A GAP?  

SciTech Connect (OSTI)

Using the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) coronagraph, we have obtained high-contrast 2.0 mum imaging polarimetry and 1.1 mum imaging of the circumstellar disk around AB Aurigae on angular scales of 0.''3-3'' (40-550 AU). Unlike previous observations, these data resolve the disk in both total and polarized intensity, allowing accurate measurement of the spatial variation of polarization fraction across the disk. Using these observations, we investigate the apparent 'gap' in the disk reported by Oppenheimer et al.. In polarized intensity, the NICMOS data closely reproduce the morphology seen by Oppenheimer et al., yet in total intensity we find no evidence for a gap in either our 1.1 or 2.0 mum images. We find instead that region has lower polarization fraction, without a significant decrease in total scattered light, consistent with expectations for backscattered light on the far side of an inclined disk. Radiative transfer models demonstrate this explanation fits the observations. Geometrical scattering effects are entirely sufficient to explain the observed morphology without any need to invoke a gap or a protoplanet at that location.

Perrin, Marshall D. [Division of Astronomy, University of California, Los Angeles, CA 90095 (United States); Schneider, Glenn [Steward Observatory, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Duchene, Gaspard [University of California, Berkeley, Berkeley, CA 94720 (United States); Pinte, Christophe [Universite Joseph Fourier-Grenoble 1/CNRS, Laboratoire d'Astrophysique de Grenoble (LAOG) UMR 5571, BP 53, 38041 Grenoble, Cedex 09 (France); Grady, Carol A. [Eureka Scientific, 2452 Delmer, Suite 100, Oakland, CA 96002 (United States); Wisniewski, John P. [Department of Astronomy, University of Washington Seattle, WA 98195-1580 (United States); Hines, Dean C., E-mail: mperrin@ucla.ed [Space Science Institute, 4750 Walnut Street, Suite 205, Boulder, CO 80301 (United States)

2009-12-20T23:59:59.000Z

491

THE CARNEGIE SUPERNOVA PROJECT: LIGHT-CURVE FITTING WITH SNooPy  

SciTech Connect (OSTI)

In providing an independent measure of the expansion history of the universe, the Carnegie Supernova Project (CSP) has observed 71 high-z Type Ia supernovae (SNe Ia) in the near-infrared bands Y and J. These can be used to construct rest-frame i-band light curves which, when compared to a low-z sample, yield distance moduli that are less sensitive to extinction and/or decline-rate corrections than in the optical. However, working with NIR observed and i-band rest-frame photometry presents unique challenges and has necessitated the development of a new set of observational tools in order to reduce and analyze both the low-z and high-z CSP sample. We present in this paper the methods used to generate uBVgriYJH light-curve templates based on a sample of 24 high-quality low-z CSP SNe. We also present two methods for determining the distances to the hosts of SN Ia events. A larger sample of 30 low-z SNe Ia in the Hubble flow is used to calibrate these methods. We then apply the method and derive distances to seven galaxies that are so nearby that their motions are not dominated by the Hubble flow.

Burns, Christopher R.; Persson, S. E.; Madore, Barry F.; Freedman, Wendy L. [Observatories of the Carnegie Institution for Science, 813 Santa Barbara St., Pasadena, CA, 91101 (United States); Stritzinger, Maximilian; Phillips, M. M.; Boldt, Luis; Campillay, Abdo; Folatelli, Gaston; Gonzalez, Sergio; Krzeminski, Wojtek; Morrell, Nidia; Salgado, Francisco [Carnegie Institution of Washington, Las Campanas Observatory, Colina El Pino, Casilla 601 (Chile); Kattner, ShiAnne [Astronomy Department, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182 (United States); Contreras, Carlos [Centre for Astrophysics and Supercomputing, Swinburne University of Technology, P.O. Box 218, Victoria 3122 (Australia); Suntzeff, Nicholas B. [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, Department of Physics and Astronomy, College Station, TX 77843 (United States)

2011-01-15T23:59:59.000Z

492

Lighting Test Facilities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Custom Projects Lighting Test Facilities SSL Guidelines Industrial Federal Agriculture LED Street and Area Lighting Field Test of Exterior LED Down Lights Abstract Outdoor...

493

Light Water Reactor Sustainability  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4 Light Water Reactor Sustainability ACCOMPLISHMENTS REPORT 2014 Accomplishments Report | Light Water Reactor Sustainability 2 T he mission of the Light Water Reactor...

494

Enabling a Transition to Low Carbon Economies in Developing Countries:  

Open Energy Info (EERE)

Enabling a Transition to Low Carbon Economies in Developing Countries: Enabling a Transition to Low Carbon Economies in Developing Countries: Bangladesh Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Enabling a Transition to Low Carbon Economies in Developing Countries: Bangladesh Agency/Company /Organization: Imperial College-London Sector: Energy, Climate Focus Area: Energy Efficiency, Biomass, - Waste to Energy, - Anaerobic Digestion, Solar, - Concentrating Solar Power, - Solar PV, Wind Topics: GHG inventory, Low emission development planning, Policies/deployment programs, Resource assessment, Pathways analysis, Background analysis Resource Type: Publications, Case studies/examples Website: workspace.imperial.ac.uk/energyfutureslab/Public/2010-03-17-Bangladesh Country: Bangladesh Southern Asia Enabling a Transition to Low Carbon Economies in Developing Countries: Bangladesh Screenshot

495

Enabling States and Localities to Improve Energy Assurance and Resiliency  

Broader source: Energy.gov (indexed) [DOE]

Enabling States and Localities to Improve Energy Assurance and Enabling States and Localities to Improve Energy Assurance and Resiliency Planning (September 2010) Enabling States and Localities to Improve Energy Assurance and Resiliency Planning (September 2010) The Energy Assurance Planning (EAP) Initiative for State and Local Governments is a major element of DOE's effort to improve the Nation's energy sector resiliency. The overall goal of the three-year program is to work toward a more uniform, comprehensive energy assurance and resiliency approach that benefits localities, States, and the Nation. Enabling States and Localities to Improve Energy Assurance and Resiliency Planning (September 2010) More Documents & Publications Emergency Support Function #12; Energy Annex The American Recovery and Reinvestment Act (ARRA) Energy Assurance Planning

496

CODES: Enabling Co-Design of Multilayer Exascale Storage Architectures |  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

CODES: Enabling Co-Design of Multilayer Exascale Storage Architectures CODES: Enabling Co-Design of Multilayer Exascale Storage Architectures CODES seeks to enable the exploration and co-design of exascale storage systems by providing a detailed, accurate, and highly parallel simulation of exascale storage and the surrounding environment. Specifically the intention is to (1) portray realistic application checkpointing and analysis workloads, (2) capture the complexity, scale, and multilayer nature of exascale storage hardware and software, and (3) execute in a timeframe that enables "what if'" exploration of design concepts. To this end we develop models of the major hardware and software components in an exascale storage system, as well as the application I/O workloads that drive them. We will use our simulation system to investigate critical

497

Federal Energy Management Program: ESPC ENABLE Project Assistance and  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Project Assistance and Training Project Assistance and Training ESPC ENABLE Training To learn how to use ESPC ENABLE, take the Streamlining ESPCs for Small Sites First Thursday Seminar on demand. The Federal Energy Management Program (FEMP) offers project assistance and training to help Federal agencies implement Energy Savings Performance Contracts (ESPC) ENABLE projects. Project Assistance Through FY2014, project assistance from FEMP is cost-free and may include project management as well as technical support from experienced project facilitators and procurement staff. General Services Administration (GSA) contracting staff are also available to answer questions regarding the GSA Federal Supply Schedule 84, SIN 246-53. To learn more about one-on-one project assistance for your ESPC ENABLE project, contact Evan Fuka at 202-406-4107.