National Library of Energy BETA

Sample records for grated analy sis

  1. This book presents a data-rich case study across time of the Aydinli no-mads (Yrk) in Southeast Turkey. We use longitudinal network analy-

    E-Print Network [OSTI]

    White, Douglas R.

    ) in Southeast Turkey. We use longitudinal network analy- sis to develop theory and test ethnographic hypotheses

  2. Alea 1, 181203 (2006) Genetic Genealogical Models in Rare Event Analy-

    E-Print Network [OSTI]

    Boyer, Edmond

    2006-01-01

    Alea 1, 181­203 (2006) Genetic Genealogical Models in Rare Event Analy- sis Fr´ed´eric C and a genealogical model for estimating a class of rare events arising in physics and network analysis. We represent particle systems, rare events, Feynman-Kac models, ge- netic algorithms, genealogical trees. Second version

  3. SIS

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-Throughput Analysis of Protein1-0845*RV 14800 Modification

  4. A COVERING-GRAPH APPROACH TO EPIDEMICS ON SIS AND SIS-LIKE NETWORKS

    E-Print Network [OSTI]

    Floyd, William

    without first passing to the sus- ceptible state. We use a covering graph construction to compare SIR, SIS of infectives. The same covering graph construction allows us to characterize the recurrent states in a SIS on the stochastic SIS model, so that asymptotic behavior is uninteresting; we consider certain long-lived states

  5. Invited Viewer Invited Viewer iSIS Portal Access

    E-Print Network [OSTI]

    Dennett, Daniel

    1 Invited Viewer Invited Viewer iSIS Portal Access Tufts "Invited Viewers" such as parents and spouses can be granted view-only access to a student's iSIS secure personal information. Students previously registered by another student or you do not have a Tufts Username and active iSIS access (most

  6. Strange Particle Production from SIS to LHC

    E-Print Network [OSTI]

    H. Oeschler; J. Cleymans; K. Redlich

    2001-12-17

    >1A review of meson emission in heavy ion collisions at incident energies from SIS up to collider energies is presented. A statistical model assuming chemical equilibrium and local strangeness conservation (i.e. strangeness conservation per collision) explains most of the observed features. Emphasis is put onto the study of $K^+$ and $K^-$ emission at low incident energies. In the framework of this statistical model it is shown that the experimentally observed equality of $K^+$ and $K^-$ rates at ``threshold-corrected'' energies $\\sqrt{s} - \\sqrt{s_{th}}$ is due to a crossing of two excitation functions. Furthermore, the independence of the $K^+$ to $K^-$ ratio on the number of participating nucleons observed between SIS and RHIC is consistent with this model. It is demonstrated that the $K^-$ production at SIS energies occurs predominantly via strangeness exchange and this channel is approaching chemical equilibrium. The observed maximum in the $K^+/\\pi^+$ excitation function is also seen in the ratio of strange to non-strange particle production. The appearance of this maximum around 30 $A\\cdot$GeV is due to the energy dependence of the chemical freeze-out parameters $T$ and $\\mu_B$.

  7. Interes'ng-Phrase Mining for Ad-Hoc Text Analy'cs

    E-Print Network [OSTI]

    Interes'ng-Phrase Mining for Ad-Hoc Text Analy'cs Klaus Berberich (kberberi Weikum (originally presented at VLDB 2010) #12;Interes'ng-Phrase Mining for Ad-Hoc Text.g., iden'fy characteris'c quota'ons by barack obama) 2 / 27 #12;Interes'ng-Phrase Mining

  8. Multilayer diffraction grating

    DOE Patents [OSTI]

    Barbee, T.W. Jr.

    1990-04-10

    This invention is for a reflection diffraction grating that functions at X-ray to VUV wavelengths and at normal angles of incidence. The novel grating is comprised of a laminar grating of period D with flat-topped grating bars. A multiplicity of layered synthetic microstructures, of period d and comprised of alternating flat layers of two different materials, are disposed on the tops of the grating bars of the laminar grating. In another embodiment of the grating, a second multiplicity of layered synthetic microstructures are also disposed on the flat faces, of the base of the grating, between the bars. D is in the approximate range from 3,000 to 50,000 Angstroms, but d is in the approximate range from 10 to 400 Angstroms. The laminar grating and the layered microstructures cooperatively interact to provide many novel and beneficial instrumentational advantages. 2 figs.

  9. Multilayer diffraction grating

    DOE Patents [OSTI]

    Barbee, Jr., Troy W. (Palo Alto, CA)

    1990-01-01

    This invention is for a reflection diffraction grating that functions at X-ray to VUV wavelengths and at normal angles of incidence. The novel grating is comprised of a laminar grating of period D with flat-topped grating bars. A multiplicity of layered synthetic microstructures, of period d and comprised of alternating flat layers of two different materials, are disposed on the tops of the grating bars of the laminar grating. In another embodiment of the grating, a second multiplicity of layered synthetic microstructures are also disposed on the flat faces, of the base of the grating, between the bars. D is in the approximate range from 3,000 to 50,000 Angstroms, but d is in the approximate range from 10 to 400 Angstroms. The laminar grating and the layered microstructures cooperatively interact to provide many novel and beneficial instrumentational advantages.

  10. Catwalk grate lifting tool

    DOE Patents [OSTI]

    Gunter, L.W.

    1992-08-11

    A device is described for lifting catwalk grates comprising an elongated bent member with a handle at one end and a pair of notched braces and a hook at the opposite end that act in conjunction with each other to lock onto the grate and give mechanical advantage in lifting the grate. 10 figs.

  11. Multilayer dielectric diffraction gratings

    DOE Patents [OSTI]

    Perry, M.D.; Britten, J.A.; Nguyen, H.T.; Boyd, R.; Shore, B.W.

    1999-05-25

    The design and fabrication of dielectric grating structures with high diffraction efficiency used in reflection or transmission is described. By forming a multilayer structure of alternating index dielectric materials and placing a grating structure on top of the multilayer, a diffraction grating of adjustable efficiency, and variable optical bandwidth can be obtained. Diffraction efficiency into the first order in reflection varying between 1 and 98 percent has been achieved by controlling the design of the multilayer and the depth, shape, and material comprising the grooves of the grating structure. Methods for fabricating these gratings without the use of ion etching techniques are described. 7 figs.

  12. The Mutton Snapper (Lutjanus analis) Spawning Aggregation Fishery at Gladden Spit, Belize: Inter-annual and Within-season Dynamics

    E-Print Network [OSTI]

    Granados-Dieseldorff, Pablo

    2013-11-07

    Artisanal fisheries constitute a considerable source of employment, income, and protein for many coastal communities in the Caribbean. One of the regions most valuable fisheries is for mutton snapper (Lutjanus analis), a coral-reef fish that uses...

  13. REGISTRATION IN iSIS Additional information about fall 2013 course registration, per the ASE Registrar

    E-Print Network [OSTI]

    Tufts University

    #04022013 REGISTRATION IN iSIS Additional information about fall 2013 course registration, per the ASE Registrar This year, fall 2013 registration will happen in iSIS, Tufts' new Integrated Student Information System, located at http://go.tufts.edu/isis. Accessing iSIS Log into iSIS with your Tufts Username

  14. Final Outcome for the Critical SIS Stochastic Epidemic

    E-Print Network [OSTI]

    Dolgoarshinnykh, Regina

    probabilities Px t Zt+h = x + 1 = xh + o(xh), Px t Zt+h = x - 1 = xh + o(xh). The death rate x is the same, St + It N = population size. It = state of the chain at time t; [N] = {0, 1, . . . , N} = state as for the SIS epidemic, but the the birth rate x domi- nates the birth rate x(1 - x/N) of the SIS process

  15. Applying Human Factors during the SIS Life Cycle

    SciTech Connect (OSTI)

    Avery, K.

    2010-05-05

    Safety Instrumented Systems (SIS) are widely used in U.S. Department of Energy's (DOE) nonreactor nuclear facilities for safety-critical applications. Although use of the SIS technology and computer-based digital controls, can improve performance and safety, it potentially introduces additional complexities, such as failure modes that are not readily detectable. Either automated actions or manual (operator) actions may be required to complete the safety instrumented function to place the process in a safe state or mitigate a hazard in response to an alarm or indication. DOE will issue a new standard, Application of Safety Instrumented Systems Used at DOE Nonreactor Nuclear Facilities, to provide guidance for the design, procurement, installation, testing, maintenance, operation, and quality assurance of SIS used in safety significant functions at DOE nonreactor nuclear facilities. The DOE standard focuses on utilizing the process industry consensus standard, American National Standards Institute/ International Society of Automation (ANSI/ISA) 84.00.01, Functional Safety: Safety Instrumented Systems for the Process Industry Sector, to support reliable SIS design throughout the DOE complex. SIS design must take into account human-machine interfaces and their limitations and follow good human factors engineering (HFE) practices. HFE encompasses many diverse areas (e.g., information display, user-system interaction, alarm management, operator response, control room design, and system maintainability), which affect all aspects of system development and modification. This paper presents how the HFE processes and principles apply throughout the SIS life cycle to support the design and use of SIS at DOE nonreactor nuclear facilities.

  16. Electrically-programmable diffraction grating

    DOE Patents [OSTI]

    Ricco, Antonio J. (Albuquerque, NM); Butler, Michael A. (Albuquerque, NM); Sinclair, Michael B. (Albuquerque, NM); Senturia, Stephen D. (Brookline, MA)

    1998-01-01

    An electrically-programmable diffraction grating. The programmable grating includes a substrate having a plurality of electrodes formed thereon and a moveable grating element above each of the electrodes. The grating elements are electrostatically programmable to form a diffraction grating for diffracting an incident beam of light as it is reflected from the upper surfaces of the grating elements. The programmable diffraction grating, formed by a micromachining process, has applications for optical information processing (e.g. optical correlators and computers), for multiplexing and demultiplexing a plurality of light beams of different wavelengths (e.g. for optical fiber communications), and for forming spectrometers (e.g. correlation and scanning spectrometers).

  17. Characterization of Sugar Insensitive (sis) Mutants of Arabidopsis

    SciTech Connect (OSTI)

    Gibson, Susan I.

    2009-06-08

    Despite the fact that soluble sugar levels have been postulated to play an important role in the control of a wide variety of plant metabolic and developmental pathways, the mechanisms by which plants respond to soluble sugar levels remain poorly understood. Plant responses to soluble sugar levels are also important in bioenergy production, as plant sugar responses are believed to help regulate both carbon fixation and carbon partitioning. For example, accumulation of soluble sugars, such as sucrose and glucose, in source tissues leads to feedback inhibition of photosynthesis, thereby decreasing rates of carbon fixation. Soluble sugar levels can also affect sink strengths, affecting the rates of accumulation of carbon-based compounds into both particular molecular forms (e.g. carbohydrates versus lipids versus proteins) and particular plant organs and tissues. Mutants of Arabidopsis that are defective in the ability to respond to soluble sugar levels were isolated and used as tools to identify some of the factors involved in plant sugar response. These sugar insensitive (sis) mutants were isolated by screening mutagenized seeds for those that were able to germinate and develop relatively normal shoot systems on media containing 0.3 M glucose or 0.3 M sucrose. At these sugar concentrations, wild-type Arabidopsis germinate and produce substantial root systems, but show little to no shoot development. Twenty-eight sis mutants were isolated during the course of four independent mutant screens. Based on a preliminary characterization of all of these mutants, sis3 and sis6 were chosen for further study. Both of these mutations appear to lie in previously uncharacterized loci. Unlike many other sugar-response mutants, sis3 mutants exhibit a wild-type or near wild-type response in all phytohormone-response assays conducted to date. The sis6-1 mutation is unusual in that it appears to be due to overexpression of a gene, rather than representing a loss of function mutation. Characterization of mutant and wild-type plants has revealed that sugars inhibit breakdown of seed storage lipids. In addition, high concentrations of exogenous sugars largely eliminate the development of mature chloroplasts by developing seedlings. Affymetrix GeneChip experiments have revealed that expression of many plant genes is partially regulated by sugar levels, with approximately two percent of genes exhibiting alterations in steady-state mRNA levels in response to changing sugar concentrations. Ultimately, a better understanding of plant sugar responses may allow improvements in rates of carbon fixation and manipulation of carbon partitioning. These improvements will be needed to help make production of energy from biomass more economically attractive.

  18. Charged particle accelerator grating

    DOE Patents [OSTI]

    Palmer, Robert B. (Shoreham, NY)

    1986-01-01

    A readily disposable and replaceable accelerator grating for a relativistic particle accelerator. The grating is formed for a plurality of liquid droplets that are directed in precisely positioned jet streams to periodically dispose rows of droplets along the borders of a predetermined particle beam path. A plurality of lasers are used to direct laser beams into the droplets, at predetermined angles, thereby to excite the droplets to support electromagnetic accelerating resonances on their surfaces. Those resonances operate to accelerate and focus particles moving along the beam path. As the droplets are distorted or destroyed by the incoming radiation, they are replaced at a predetermined frequency by other droplets supplied through the jet streams.

  19. Origin of subgap current in an SIS junction

    SciTech Connect (OSTI)

    Suzuki, Toyoaki; Noguchi, Takashi; Matsuo, Hiroshi [National Institutes of Natural Sciences/National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo, 181-8588 (Japan)

    2009-12-16

    According to the BCS theory, the subgap current in an SIS junction is reduced exponentially as the temperature decreases. However, experimentally, the reduction is saturated below a certain temperature. This phenomenon was a bottleneck in the development of sensitive SIS photon detectors with NEP of 10{sup -19} W/{radical}(Hz) at 650 GHz, because the NEP is limited by the shot noise in the subgap current. To investigate the origin of the residual subgap current under various temperatures we have measured I-V curves of a Nb/Al-AlN/Nb junction. Obtained I-V curves have been reproduced by a model: single-and two-particle tunneling under reduced quasiparticle lifetime. Our result suggests that increasing the lifetime is essential to reduce the subgap current. One of possible methods to increase the lifetime is to form an epitaxial Nb film.

  20. Bragg grating rogue wave

    E-Print Network [OSTI]

    Degasperis, Antonio; Aceves, Alejandro B

    2015-01-01

    We derive the rogue wave solution of the classical massive Thirring model, that describes nonlinear optical pulse propagation in Bragg gratings. Combining electromagnetically induced transparency with Bragg scattering four-wave mixing, may lead to extreme waves at extremely low powers.

  1. Electrically-programmable diffraction grating

    DOE Patents [OSTI]

    Ricco, A.J.; Butler, M.A.; Sinclair, M.B.; Senturia, S.D.

    1998-05-26

    An electrically-programmable diffraction grating is disclosed. The programmable grating includes a substrate having a plurality of electrodes formed thereon and a moveable grating element above each of the electrodes. The grating elements are electrostatically programmable to form a diffraction grating for diffracting an incident beam of light as it is reflected from the upper surfaces of the grating elements. The programmable diffraction grating, formed by a micromachining process, has applications for optical information processing (e.g. optical correlators and computers), for multiplexing and demultiplexing a plurality of light beams of different wavelengths (e.g. for optical fiber communications), and for forming spectrometers (e.g. correlation and scanning spectrometers). 14 figs.

  2. Keeping Pace with Big Data Arizona State University Data Mining and Machine Learning Lab NSF Workshop on Big Data Analy6cs, Beijing 1

    E-Print Network [OSTI]

    Liu, Huan

    Keeping Pace with Big Data Arizona State University Data Mining and Machine Learning Lab NSF Workshop on Big Data Analy6cs, Beijing 1 Keeping Pace with Big Data - A Data Mining Perspec>ve Huan Liu Data

  3. Charged particle accelerator grating

    DOE Patents [OSTI]

    Palmer, R.B.

    1985-09-09

    A readily disposable and replaceable accelerator grating for a relativistic particle accelerator is described. The grating is formed for a plurality of liquid droplets that are directed in precisely positioned jet streams to periodically dispose rows of droplets along the borders of a predetermined particle beam path. A plurality of lasers are used to direct laser beams onto the droplets, at predetermined angles, thereby to excite the droplets to support electromagnetic accelerating resonances on their surfaces. Those resonances operate to accelerate and focus particles moving along the beam path. As the droplets are distorted or destroyed by the incoming radiation, they are replaced at a predetermined frequency by other droplets supplied through the jet streams.

  4. Noise Stability of SIS Receivers J.W. Kooi, G. Chattopadhyay, M. Thielman, and

    E-Print Network [OSTI]

    Noise Stability of SIS Receivers J.W. Kooi, G. Chattopadhyay, M. Thielman, and T.G. Phillips to better understand the noise mechanisms responsible for reducing the receiver stability, we employed address a variety of factors that degrade the noise stability of SIS receivers. The goal of this exercise

  5. 2.4 Grating formula

    E-Print Network [OSTI]

    2010-09-14

    2.4. GRATING FORMULA. 27 to x1 for every x2. In fact, if the grating problem attains a unique solution then we want to show that v(x1,x2) = u(x1,x2)e. ?i?x1.

  6. Fuzzy Diagnosis using Order of Magnitude Exaggeration Neal Snooke

    E-Print Network [OSTI]

    Snooke, Neal

    ) diagnostic system, by precompiling the results of off-line qualitative simulation and FMEA analy- sis

  7. How to search for Distribution Requirements through iSIS School of Arts and Sciences Distribution Requirements

    E-Print Network [OSTI]

    Dennett, Daniel

    How to search for Distribution Requirements through iSIS School of Arts and Sciences Distribution can be accessed from the iSIS log in page or once the user has logged into iSIS, make sure to use

  8. Fiber Grating Environmental Sensing System

    DOE Patents [OSTI]

    Schulz, Whitten L. (Fairview, OR); Udd, Eric (Fairview, OR)

    2003-07-29

    Fiber grating environmental measurement systems are comprised of sensors that are configured to respond to changes in moisture or chemical content of the surrounding medium through the action of coatings and plates inducing strain that is measured. These sensors can also be used to monitor the interior of bonds for degradation due to aging, cracking, or chemical attack. Means to multiplex these sensors at high speed and with high sensitivity can be accomplished by using spectral filters placed to correspond to each fiber grating environmental sensor. By forming networks of spectral elements and using wavelength division multiplexing arrays of fiber grating sensors may be processed in a single fiber line allowing distributed high sensitivity, high bandwidth fiber optic grating environmental sensor systems to be realized.

  9. Near-perfect diffraction grating rhomb

    DOE Patents [OSTI]

    Wantuck, Paul J. (Santa Fe, NM)

    1990-01-01

    A near-perfect grating rhomb enables an output beam to be diffracted to an angle offset from the input beam. The correcting grating is tipped relative to the dispersing grating to provide the offset angle. The correcting grating is further provided with a groove spacing which differs from the dispersing grating groove space by an amount effective to substantially remove angular dispersion in the output beam. A near-perfect grating rhomb has the capability for selective placement in a FEL to suppress sideband instabilities arising from the FEL.

  10. Embedded high-contrast distributed grating structures

    DOE Patents [OSTI]

    Zubrzycki, Walter J. (Albuquerque, NM); Vawter, Gregory A. (Albuquerque, NM); Allerman, Andrew A. (Albuquerque, NM)

    2002-01-01

    A new class of fabrication methods for embedded distributed grating structures is claimed, together with optical devices which include such structures. These new methods are the only known approach to making defect-free high-dielectric contrast grating structures, which are smaller and more efficient than are conventional grating structures.

  11. Diffraction gratings used as identifying markers

    DOE Patents [OSTI]

    Deason, Vance A. (Idaho Falls, ID); Ward, Michael B. (Idaho Falls, ID)

    1991-01-01

    A finely detailed defraction grating is applied to an object as an identifier or tag which is unambiguous, difficult to duplicate, or remove and transfer to another item, and can be read and compared with prior readings with relative ease. The exact pattern of the defraction grating is mapped by diffraction moire techniques and recorded for comparison with future readings of the same grating.

  12. Fast Harmonic Balance of SIS Mixers with Multiple Junctions and Superconducting Circuits

    E-Print Network [OSTI]

    Ward, John

    Fast Harmonic Balance of SIS Mixers with Multiple Junctions and Superconducting Circuits Frank Rice-47, Pasadena, CA 91125, USA. Abstract We have extended the spectral domain harmonic balance method-Raphson technique to achieve rapid convergence, even when many harmonics are included in the analysis. Another im

  13. Active diffraction gratings: Development and tests

    SciTech Connect (OSTI)

    Bonora, S.; Frassetto, F.; Poletto, L. [Institute of Photonics and Nanotechnologies, National Council for Research of Italy, via Trasea, 7, Padova 35131 (Italy); Zanchetta, E.; Della Giustina, G.; Brusatin, G. [Industrial Engineering Department, University of Padova, Via Marzolo 9, 35131 Padova (Italy)

    2012-12-15

    We present the realization and characterization of an active spherical diffraction grating with variable radius of curvature to be used in grazing-incidence monochromators. The device consists of a bimorph deformable mirror on the top of which a diffraction grating with laminar profile is realized by UV lithography. The experimental results show that the active grating can optimize the beam focalization of visible wavelengths through its rotation and focus accommodation.

  14. Diffraction gratings used as identifying markers

    DOE Patents [OSTI]

    Deason, V.A.; Ward, M.B.

    1991-03-26

    A finely detailed diffraction grating is applied to an object as an identifier or tag which is unambiguous, difficult to duplicate, or remove and transfer to another item, and can be read and compared with prior readings with relative ease. The exact pattern of the diffraction grating is mapped by diffraction moire techniques and recorded for comparison with future readings of the same grating. 7 figures.

  15. A computational inverse diffraction grating problem

    E-Print Network [OSTI]

    2012-02-29

    Mar 2, 2012 ... tromagnetic diffraction through periodic structures, along with some ... problems in diffractive optics, which is to design a grating structure that...

  16. Fiber optic diffraction grating maker

    DOE Patents [OSTI]

    Deason, Vance A. (Idaho Falls, ID); Ward, Michael B. (Idaho Falls, ID)

    1991-01-01

    A compact and portable diffraction grating maker comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent beam splitters, and collimating lenses or mirrors directing the split beam at an appropriate photosensitive material. The collimating optics, the output ends of the fiber optic coupler and the photosensitive plate holder are all mounted on an articulated framework so that the angle of intersection of the beams can be altered at will without disturbing the spatial filter, collimation or beam quality, and assuring that the beams will always intersect at the position of the plate.

  17. Fiber optic diffraction grating maker

    DOE Patents [OSTI]

    Deason, V.A.; Ward, M.B.

    1991-05-21

    A compact and portable diffraction grating maker is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent beam splitters, and collimating lenses or mirrors directing the split beam at an appropriate photosensitive material. The collimating optics, the output ends of the fiber optic coupler and the photosensitive plate holder are all mounted on an articulated framework so that the angle of intersection of the beams can be altered at will without disturbing the spatial filter, collimation or beam quality, and assuring that the beams will always intersect at the position of the plate. 4 figures.

  18. Gratings Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County, Georgia:Oregon: Energy ResourcesGratings Inc Jump to:

  19. Near-field imaging of perfectly conducting grating surfaces

    E-Print Network [OSTI]

    2013-11-06

    method in order to capture fine structures of grating profiles with multiple frequency data ... optics, which are to design grating structures to obtain some specified...

  20. Dynamical theory of diffraction on moving grating

    E-Print Network [OSTI]

    V. A. Bushuev; A. I. Frank; G. V. Kulin

    2015-02-16

    In the framework of the approximation of slowly varying amplitudes a multiwave dynamical theory of neutron diffraction on a moving phase grating was developed. The influence of the velocity of the grating, its period and height of the slits on the discrete energy spectrum and intensity of various diffraction orders was analyzed.

  1. NbTiN Based SIS Multilayer Structures for SRF Applications

    SciTech Connect (OSTI)

    Valente, Anne-marie; Eremeev, Grigory; Phillips, H.; Reece, Charles; Spradlin, Joshua; Yang, Qiguang; Lukaszew, Rosa

    2013-09-01

    For the past three decades, bulk niobium has been the material of choice for SRF cavities applications. RF cavity performance is now approaching the theoretical limit for bulk niobium. For further improvement of RF cavity performance for future accelerator projects, Superconductor ? Insulator - Superconductor (SIS) multilayer structures (as recently proposed by Alex Gurevich) present the theoretical prospect to reach RF performance beyond bulk Nb, using thinly layered higher-Tc superconductors with enhanced Hc1. Jefferson Lab (JLab) is pursuing this approach with the development of NbTiN and AlN based multilayer SIS structures. This paper presents the results on the characteristics of NbTiN films and the first RF measurements on NbTiN-based multilayer structure on thick Nb films.

  2. Formal Support for Quantitative Analysis of Residual Risks in Safety-Critical Systems

    E-Print Network [OSTI]

    and Effects Analysis (FMEA) and Fault-Tree Analy- sis (FTA) [16]. However, many of these techniques become

  3. Long period fiber gratings induced by mechanical resonance

    E-Print Network [OSTI]

    Shahal, Shir; Duadi, Hamootal; Fridman, Moti

    2015-01-01

    We present a simple, and robust method for writing long period fiber gratings with low polarization dependent losses. Our method is based on utilizing mechanical vibrations of the tapered fiber while pooling it. Our method enables real-time tunability of the periodicity, efficiency and length of the grating. We also demonstrate complex grating by writing multiple gratings simultaneously. Finally, we utilized the formation of the gratings in different fiber diameters to investigate the Young's modulus of the fiber.

  4. Hydraulic Capacity of an ADA Compliant Street Drain Grate

    SciTech Connect (OSTI)

    Lottes, Steven A.; Bojanowski, Cezary

    2015-09-01

    Resurfacing of urban roads with concurrent repairs and replacement of sections of curb and sidewalk may require pedestrian ramps that are compliant with the American Disabilities Act (ADA), and when street drains are in close proximity to the walkway, ADA compliant street grates may also be required. The Minnesota Department of Transportation ADA Operations Unit identified a foundry with an available grate that meets ADA requirements. Argonne National Laboratorys Transportation Research and Analysis Computing Center used full scale three dimensional computational fluid dynamics to determine the performance of the ADA compliant grate and compared it to that of a standard vane grate. Analysis of a parametric set of cases was carried out, including variation in longitudinal, gutter, and cross street slopes and the water spread from the curb. The performance of the grates was characterized by the fraction of the total volume flow approaching the grate from the upstream that was captured by the grate and diverted into the catch basin. The fraction of the total flow entering over the grate from the side and the fraction of flow directly over a grate diverted into the catch basin were also quantities of interest that aid in understanding the differences in performance of the grates. The ADA compliant grate performance lagged that of the vane grate, increasingly so as upstream Reynolds number increased. The major factor leading to the performance difference between the two grates was the fraction of flow directly over the grates that is captured by the grates.

  5. Grating enhanced solid-state laser amplifiers

    DOE Patents [OSTI]

    Erlandson, Alvin C. (Livermore, CA); Britten, Jerald A. (Clayton, CA)

    2010-11-09

    A novel method and apparatus for suppressing ASE and parasitic oscillation modes in a high average power laser is introduced. Such an invention, as disclosed herein, uses diffraction gratings to increase gain, stored energy density, and pumping efficiency of solid-state laser gain media, such as, but not limited to rods, disks and slabs. By coupling predetermined gratings to solid-state gain media, such as crystal or ceramic laser gain media, ASE and parasitic oscillation modes can be effectively suppressed.

  6. Interrogation of a long-period grating using a mechanically scannable arrayed waveguide grating

    E-Print Network [OSTI]

    Yao, Jianping

    ); published July 16, 2008 A novel technique to interrogate a long-period grating (LPG) using a mechanically of the LPG is measured. An interrogation system with a resolution of 10 pm at a speed of 10 Hz-period-grating (LPG) sensors have found exten- sive applications ranging from temperature monitor- ing, mechanical

  7. Transcript Request Form Note that any current or former student with a UTLN may request a transcript through iSIS at

    E-Print Network [OSTI]

    Dennett, Daniel

    a transcript through iSIS at http://go.tufts.edu/isis Please complete this form to request a Sackler School

  8. Terahertz time domain interferometry of a SIS tunnel junction and a quantum point contact

    SciTech Connect (OSTI)

    Karadi, C [Univ. of California, Berkeley, CA (United States). Dept. of Physics

    1995-09-01

    The author has applied the Terahertz Time Domain Interferometric (THz-TDI) technique to probe the ultrafast dynamic response of a Superconducting-Insulating-Superconducting (SIS) tunnel junction and a Quantum Point Contact (QPC). The THz-TDI technique involves monitoring changes in the dc current induced by interfering two picosecond electrical pulses on the junction as a function of time delay between them. Measurements of the response of the Nb/AlO{sub x}/Nb SIS tunnel junction from 75--200 GHz are in full agreement with the linear theory for photon-assisted tunneling. Likewise, measurements of the induced current in a QPC as a function of source-drain voltage, gate voltage, frequency, and magnetic field also show strong evidence for photon-assisted transport. These experiments together demonstrate the general applicability of the THz-TDI technique to the characterization of the dynamic response of any micron or nanometer scale device that exhibits a non-linear I-V characteristic. 133 refs., 49 figs.

  9. Grating array systems having a plurality of gratings operative in a coherently additive mode and methods for making such grating array systems

    DOE Patents [OSTI]

    Kessler, Terrance J. (Mendon, NY); Bunkenburg, Joachim (Victor, NY); Huang, Hu (Pittsford, NY)

    2007-02-13

    A plurality of gratings (G1, G2) are arranged together with a wavefront sensor, actuators, and feedback system to align the gratings in such a manner, that they operate like a single, large, monolithic grating. Sub-wavelength-scale movements in the mechanical mounting, due to environmental influences, are monitored by an interferometer (28), and compensated by precision actuators (16, 18, 20) that maintain the coherently additive mode. The actuators define the grating plane, and are positioned in response to the wavefronts from the gratings and a reference flat, thus producing the interferogram that contains the alignment information. Movement of the actuators is also in response to a diffraction-limited spot on the CCD (36) to which light diffracted from the gratings is focused. The actuator geometry is implemented to take advantage of the compensating nature of the degrees of freedom between gratings, reducing the number of necessary control variables.

  10. Ultra-high density diffraction grating

    DOE Patents [OSTI]

    Padmore, Howard A.; Voronov, Dmytro L.; Cambie, Rossana; Yashchuk, Valeriy V.; Gullikson, Eric M.

    2012-12-11

    A diffraction grating structure having ultra-high density of grooves comprises an echellette substrate having periodically repeating recessed features, and a multi-layer stack of materials disposed on the echellette substrate. The surface of the diffraction grating is planarized, such that layers of the multi-layer stack form a plurality of lines disposed on the planarized surface of the structure in a periodical fashion, wherein lines having a first property alternate with lines having a dissimilar property on the surface of the substrate. For example, in one embodiment, lines comprising high-Z and low-Z materials alternate on the planarized surface providing a structure that is suitable as a diffraction grating for EUV and soft X-rays. In some embodiments, line density of between about 10,000 lines/mm to about 100,000 lines/mm is provided.

  11. Integrated optical filters using Bragg gratings and resonators

    E-Print Network [OSTI]

    Khan, Mohammad Jalal

    2002-01-01

    This thesis provides an in-depth study of optical filters made using integrated Bragg gratings and Bragg resonators. Various topologies for making add/drop filters using integrated gratings are outlined. Each class of ...

  12. Superfluid {sup 4}He Quantum Interference Grating

    SciTech Connect (OSTI)

    Sato, Yuki; Joshi, Aditya; Packard, Richard

    2008-08-22

    We report the first observation of quantum interference from a grating structure consisting of four weak link junctions in superfluid {sup 4}He. We find that an interference grating can be implemented successfully in a superfluid matter wave interferometer to enhance its sensitivity while trading away some of its dynamic range. We also show that this type of device can be used to measure absolute quantum mechanical phase differences. The results demonstrate the robust nature of superfluid phase coherence arising from quantum mechanics on a macroscopic scale.

  13. Socially Influencing Systems (SIS) for Improved Urban Mobility IAP 2015 Non-Credit Course (E15-359, MIT Media Lab)

    E-Print Network [OSTI]

    Herr, Hugh

    to various problem domains, such as mobility, health and wellbeing, energy conservation and efficiency for motivating low-energy mobility and building prototypes of new SIS for sustainable urban mobility, includinSocially Influencing Systems (SIS) for Improved Urban Mobility IAP 2015 Non-Credit Course (E15

  14. Fourth-order coherence-function theory of laser-induced molecular reorientational grating and population grating

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    2089 Fourth-order coherence-function theory of laser-induced molecular reorientational grating mcanisme de formation du rseau de population. Abstract. 2014 We have employed fourth-order coherence proposed to distinguish molecular reorientational grating from thermal grating. We then apply the fourth

  15. COS FUV Grating Holographic Recording Specification

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    COS FUV Grating Holographic Recording Specification Date: February 3, 2000 Document Number: COS-08, COS Instrument Scientist, CU/CASA Date Reviewed By: R. Cahill 11-17-98 R. Cahill, Optical Designer-12-98 J. Andrews, COS Experiment Manager, CU/CASA Date Approved By: J. Green 11-13-98 J. C. Green, COS

  16. Distributedfeedback pulse generator based on nonlinearfibre grating

    E-Print Network [OSTI]

    Sipe,J. E.

    Distributedfeedback pulse generator based on nonlinearfibre grating B.J. Eggleton, C.M. de Sterke pulse generator or reshaper with applications in all-optical communications. Introduction: Fibre. This could form the basis of a pulse reshaper or pulse generator device with applications in future all

  17. Fiber-bragg grating-loop ringdown method and apparatus

    SciTech Connect (OSTI)

    Wang, Chuji

    2008-01-29

    A device comprising a fiber grating loop ringdown (FGLRD) system of analysis is disclosed. A fiber Bragg grating (FBG) or Long-Period grating (LPG) written in a section of single mode fused silica fiber is incorporated into a fiber loop. By utilizing the wing areas of the gratings' bandwidth as a wavelength dependent attenuator of the light transmission, a fiber grating loop ringdown concept is formed. One aspect of the present invention is temperature sensing, which has been demonstrated using the disclosed device. Temperature measurements in the areas of accuracy, stability, high temperature, and dynamic range are also described.

  18. Tunable dark modes in one-dimensional diatomic dielectric gratings

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zeng, Bo; Majumdar, Arka; Wang, Feng

    2015-05-04

    Recently researchers have demonstrated ultra high quality factor (Q) resonances in one-dimensional (1D) dielectric gratings. Here we theoretically investigate a new class of subwavelength 1D gratings, namely diatomic gratings with two nonequivalent subcells in one period, and utilize their intrinsic dark modes to achieve robust ultra high Q resonances. Such diatomic gratings provide extra design flexibility, and enable high Q resonators using thinner geometry with smaller filling factors compared to conventional designs like the high contrast gratings (HCGs). More importantly, we show that these high Q resonances can be efficiently tuned in situ, making the design appealing in various applicationsmoreincluding optical sensing, filtering and displays.less

  19. Optical Properties of Topological Insulator Bragg Gratings

    E-Print Network [OSTI]

    Crosse, J A

    2015-01-01

    Using the transfer matrix formalism, we study the transmission properties of a Bragg grating constructed from a layered axionic material. Such a material can be realized by a topological insulator subject to a time-symmetry breaking perturbation, such as an external magnetic field or surface magnetic impurities. Whilst the reflective properties of the structure are only negligibly changed by the presence of the axionic material, the grating induces Faraday and Kerr rotations in the transmitted and reflected light, respectively. These rotations are proportional to the number of layers and the strength of the time-symmetry breaking perturbation. In areas of low reflectivity the rotation angle of TE polarization decreases with increasing incidence angle while the TM polarization increases with increasing incidence angle with the converse occurring in areas of high reflectivity. The formalism and results will be useful in the development of optical and photonic devices based on topological insulators, devices whi...

  20. Transmission Grating Measurements of Undulator K

    SciTech Connect (OSTI)

    Bionta, R. M.

    2010-12-01

    This study was undertaken to understand the practicalities of determine K differences in the undulator modules by measuring single-shot x-ray spectra of the spontaneous radiation with a transmissive grating spectrometer under development to measure FEL spectra. Since the quality of the FEL is dependent on a uniform K value in all the undulator modules, being able to measure the relative undulator K values is important. Preliminary results were presented in a presentation, 'Use of FEL Off-Axis Zone Plate Spectrometer to Measure Relative K by the Pinhole/Centroid Method', at the 'LCLS Beam-Based Undulator K Measurements Workshop' on November 14, 2005 (UCRL-PRES-217281). This study applies equally well to reflective gratings of the appropriate period and inclinations.

  1. Fluidized bed boiler having a segmented grate

    DOE Patents [OSTI]

    Waryasz, Richard E. (Longmeadow, MA)

    1984-01-01

    A fluidized bed furnace (10) is provided having a perforate grate (9) within a housing which supports a bed of particulate material including some combustibles. The grate is divided into a plurality of segments (E2-E6, SH1-SH5, RH1-RH5), with the airflow to each segment being independently controlled. Some of the segments have evaporating surface imbedded in the particulate material above them, while other segments are below superheater surface or reheater surface. Some of the segments (E1, E7) have no surface above them, and there are ignitor combustors (32, 34) directed to fire into the segments, for fast startup of the furnace without causing damage to any heating surface.

  2. Compact reflective imaging spectrometer utilizing immersed gratings

    DOE Patents [OSTI]

    Chrisp, Michael P. (Danville, CA)

    2006-05-09

    A compact imaging spectrometer comprising an entrance slit for directing light, a first mirror that receives said light and reflects said light, an immersive diffraction grating that diffracts said light, a second mirror that focuses said light, and a detector array that receives said focused light. The compact imaging spectrometer can be utilized for remote sensing imaging spectrometers where size and weight are of primary importance.

  3. K+ and K- production in heavy-ion collisions at SIS-energies

    E-Print Network [OSTI]

    A. Foerster

    2003-07-23

    The production and the propagation of K+ and of K- mesons in heavy-ion collisions at beam energies of 1 to 2 AGeV have systematically been investigated with the Kaon Spectrometer KaoS at the SIS at the GSI. The ratio of the K+ production excitation function for Au+Au and for C+C reactions increases with decreasing beam energy, which is expected for a soft nuclear equation-of-state. At 1.5 AGeV a comprehensive study of the K+ and of the K- emission as a function of the size of the collision system, of the collision centrality, of the kaon energy, and of the polar emission angle has been performed. The K-/K+ ratio is found to be nearly constant as a function of the collision centrality. The spectral slopes and the polar emission patterns are different for K- and for K+. These observations indicate that K+ mesons decouple earlier from the reaction zone than K- mesons.

  4. Entwicklung und Test eines Kryokollimator-Prototypen zur Kontrolle des dynamischen Vakuums im SIS100

    E-Print Network [OSTI]

    Bozyk, L

    2012-01-01

    In the FAIR project (Facility for Antiproton and Ion Research) at the GSI Helmholtz Centre for Heavy Ion Research GmbH, high intensity heavy ion beams will be provided by the superconducting synchrotron SIS100. Medium charge state ions will be used instead of high charge state ions. The medium charge state ions on the one hand shift the space charge limit towards higher intensities and, on the other hand, avoid intensity losses in stripper stages. The most demanding challenges in the operation with medium charge state heavy ions are beam losses due to charge exchange in collisions with residual gas molecules. Further ionized ions are separated from the circulating beam and get lost on the chamber wall, while releasing a big amount of gas via ion stimulated desorption. The local pressure rise increases the probability for further charge exchange of beam ions, and a self-ampli?cation can evolve. This process may result in a complete beam loss. One way to damp this ampli?cation is given by the installation o...

  5. Numerical solution of an inverse diffraction grating problem from ...

    E-Print Network [OSTI]

    2013-02-02

    Feb 5, 2013 ... One of its important applications is the design and fabrication of optic elements with periodic structures, often called diffraction gratings.

  6. Fiber optic security seal including plural Bragg gratings

    DOE Patents [OSTI]

    Forman, P.R.

    1994-09-27

    An optical security system enables the integrity of a container seal to be remotely interrogated. A plurality of Bragg gratings is written holographically into the core of at least one optical fiber placed about the container seal, where each Bragg grating has a predetermined location and a known frequency for reflecting incident light. A time domain reflectometer is provided with a variable frequency light output that corresponds to the reflecting frequencies of the Bragg gratings to output a signal that is functionally related to the location and reflecting frequency of each of the Bragg gratings. 2 figs.

  7. Near-field imaging of perfectly conducting grating surfaces

    E-Print Network [OSTI]

    2013-08-29

    Aug 29, 2013 ... reflective interfaces, beam splitters, and sensors. De- pending on the ... capture fine structures of grating profiles with multi- ..... grating profile func- tion g only contains a couple of low Fourier modes. ... We considered two exam- ples, one of ... tions should be considered, and will report the results elsewhere.

  8. Magnetomechanically induced long period fiber gratings

    SciTech Connect (OSTI)

    Causado-Buelvas, Jesus D.; Gomez-Cardona, Nelson D.; Torres, Pedro

    2008-04-15

    In this work, we report a simple, flexible method to create long period fiber gratings mechanically by controlling the repulsion/attraction force between two magnets that pressing a plate with a periodic array of small glass cylinders to a short length of optical fiber. Via the photoelastic effect, the pressure points induce the required periodic refractive index modulation to create the LPFG. We found that the induced device exhibits spectral characteristics similar to those of other types of LPFG. As the optical properties of LPFGs are directly related to the nature of the applied perturbations, we show, to our knowledge for the frrst time, how is the evolution of birefringence effects in mechanically induced LPFGs.

  9. Increase of the grating coupler bandwidth with a graphene overlay

    SciTech Connect (OSTI)

    Cheng, Zhenzhou; Li, Zhen; Xu, Ke; Tsang, Hon Ki, E-mail: hktsang@ee.cuhk.edu.hk [Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin (Hong Kong)

    2014-03-17

    We present theoretical and experimental results that demonstrate an increase in the grating bandwidth by placing a graphene on the chip. A focusing subwavelength grating with coupling efficiency of ?4.3?dB and 1?dB bandwidth of ?60?nm was demonstrated. After a graphene sheet was transferred onto the chip, the maximum 1?dB bandwidth was increased to ?72?nm. Experimental results are consistent with the calculated graphene induced waveguide refractive index and dispersion changes, and the bandwidth improvement may be attributed to the reduction of grating dispersion. This study may be of interest for graphene-on-silicon photonic integrated circuit applications.

  10. Near-field imaging of perfectly conducting grating surfaces

    E-Print Network [OSTI]

    2013-11-06

    and sensors. Depending on the ... method in order to capture fine structures of grating profiles with multiple ..... For the stability test, some relative random ... g only contains a couple of low Fourier modes. .... will report the results elsewhere.

  11. Zonal wavefront estimation using an array of hexagonal grating patterns

    SciTech Connect (OSTI)

    Pathak, Biswajit, E-mail: b.pathak@iitg.ernet.in, E-mail: brboruah@iitg.ernet.in; Boruah, Bosanta R., E-mail: b.pathak@iitg.ernet.in, E-mail: brboruah@iitg.ernet.in [Department of Physics, Indian Institute of Technology Guwahati, Guwahati-39, Assam (India)

    2014-10-15

    Accuracy of Shack-Hartmann type wavefront sensors depends on the shape and layout of the lenslet array that samples the incoming wavefront. It has been shown that an array of gratings followed by a focusing lens provide a substitution for the lensslet array. Taking advantage of the computer generated holography technique, any arbitrary diffraction grating aperture shape, size or pattern can be designed with little penalty for complexity. In the present work, such a holographic technique is implemented to design regular hexagonal grating array to have zero dead space between grating patterns, eliminating the possibility of leakage of wavefront during the estimation of the wavefront. Tessellation of regular hexagonal shape, unlike other commonly used shapes, also reduces the estimation error by incorporating more number of neighboring slope values at an equal separation.

  12. Grate assembly for fixed-bed coal gasifier

    DOE Patents [OSTI]

    Notestein, John E. (Morgantown, WV)

    1993-01-01

    A grate assembly for a coal gasifier of a moving-bed or fixed-bed type is provided for crushing agglomerates of solid material such as clinkers, tailoring the radial distribution of reactant gases entering the gasification reaction zone, and control of the radial distribution of downwardly moving solid velocities in the gasification and combustion zone. The clinker crushing is provided by pinching clinkers between vertically oriented stationary bars and angled bars supported on the upper surface of a rotating conical grate. The distribution of the reactant gases is provided by the selective positioning of horizontally oriented passageways extending through the grate. The radial distribution of the solids is provided by mounting a vertically and generally radially extending scoop mechanism on the upper surface of the grate near the apex thereof.

  13. ALS Scientists Patent Technique To Dramatically Advance Grating...

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

    use since the early 19th century. Developments in the late 19th century led to the manufacture of gratings by highly precise ruling with a diamond onto a metallic surface. Many...

  14. A 6-beam combiner using superimposed volume index holographic gratings

    E-Print Network [OSTI]

    Yum, HoNam

    2005-11-01

    In this thesis, a 6-beam combiner using multiplexed holograms in dye-doped polymer is investigated. It is realized by recording six superimposed holographic gratings, which show uniform diffraction efficiency. The coupled wave theory for N...

  15. High reflectivity grating waveguide coatings for 1064nm

    E-Print Network [OSTI]

    A. Bunkowski; O. Burmeister; D. Friedrich; K. Danzmann; R. Schnabel

    2006-08-01

    We propose thin single-layer grating waveguide structures to be used as high-reflectivity, but low thermal noise, alternative to conventional coatings for gravitational wave detector test mass mirrors. Grating waveguide (GWG) coatings can show a reflectivity of up to 100% with an overall thickness of less than a wavelength. We theoretically investigate GWG coatings for 1064nm based on tantala (Ta2O5) on a Silica substrate focussing on broad spectral response and low thickness.

  16. Laboratoire d'InfoRmatique en Image et Systmes d'information LIRIS UMR 5205 CNRS / INSA de Lyon / Universit Claude Bernard Lyon 1 / Universit Lumire Lyon 2 / Ecole Centrale de Lyon

    E-Print Network [OSTI]

    Wolf, Christian

    of Information Sciences and Technology (IST), Statistical Analy- sis and Data Mining National context ANR), University of Anna- ba (Algeria), Galatasar

  17. Applications of laser-induced gratings to spectroscopy and dynamics

    SciTech Connect (OSTI)

    Rohlfing, E.A. [Sandia National Laboratories, Livermore, CA (United States)

    1993-12-01

    This program has traditionally emphasized two principal areas of research. The first is the spectroscopic characterization of large-amplitude motion on the ground-state potential surface of small, transient molecules. The second is the reactivity of carbonaceous clusters and its relevance to soot and fullerene formation in combustion. Motivated initially by the desire to find improved methods of obtaining stimulated emission pumping (SEP) spectra of transients, most of our recent work has centered on the use of laser-induced gratings or resonant four-wave mixing in free-jet expansions. These techniques show great promise for several chemical applications, including molecular spectroscopy and photodissociation dynamics. The author describes recent applications of two-color laser-induced grating spectroscopy (LIGS) to obtain background-free SEP spectra of transients and double resonance spectra of nonfluorescing species, and the use of photofragment transient gratings to probe photodissociation dynamics.

  18. High-efficiency 5000 lines/mm multilayer-coated blazed grating for EUV wavelengths

    E-Print Network [OSTI]

    Voronov, Dmitriy

    2010-01-01

    High-efficiency 5000 lines/mm multilayer-coated blazedthat show, for a 5000 l/mm grating diffracting in the 3 rdof 12.5 nm with a 1000 groove/mm grating [7]. A denser 2400

  19. MICROSTRUCTURED OPTICAL FIBER BRAGG GRATING SENSORS FOR STRUCTURAL HEALTH MONITORING APPLICATIONS

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    MICROSTRUCTURED OPTICAL FIBER BRAGG GRATING SENSORS FOR STRUCTURAL HEALTH MONITORING APPLICATIONS optical fiber Bragg grating (MOFBG) sensors for structural health monitoring applications. We then focus. We subsequently discuss the potential of our MOFBG sensors for structural health monitoring related

  20. Deformable silicone grating fabricated with a photo-imprinted polymer mold

    SciTech Connect (OSTI)

    Yamada, Itsunari, E-mail: yamada.i@e.usp.ac.jp [Department of Electronic Systems Engineering, School of Engineering, The University of Shiga Prefecture, Hikone, Shiga 522-8533 (Japan)] [Department of Electronic Systems Engineering, School of Engineering, The University of Shiga Prefecture, Hikone, Shiga 522-8533 (Japan); Nishii, Junji [Research Institute for Electronic Science, Hokkaido University, Sapporo 060-0812 (Japan)] [Research Institute for Electronic Science, Hokkaido University, Sapporo 060-0812 (Japan); Saito, Mitsunori [Department of Electronics and Informatics, Ryukoku University, Otsu, Shiga 520-2194 (Japan)] [Department of Electronics and Informatics, Ryukoku University, Otsu, Shiga 520-2194 (Japan)

    2014-01-15

    A tunable transmission grating was fabricated by molding a silicone elastomer (polydimethylsiloxane). Its optical characteristics were then evaluated during compression. For fabrication, a glass plate with a photoimprinted polymer grating film was used as a mold. Both the grating period and diffraction transmittance of the molded elastomer were functions of the compressive stress. The grating period changed from 3.02 to 2.86 ?m during compressing the elastomer in the direction perpendicular to the grooves.

  1. Subwavelength amorphous silicon transmission gratings and applications in polarizers and waveplates

    E-Print Network [OSTI]

    that the transmission of TE the electric field parallel to the grating finger wave is significantly different from that for a normal incident light the transmission for the TE wave the electric field parallel to the grating fingersSubwavelength amorphous silicon transmission gratings and applications in polarizers and waveplates

  2. Follow-up Report on Possible Contamination of the COS Grating Test Facility from Klinger Stages

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    Follow-up Report on Possible Contamination of the COS Grating Test Facility from Klinger Stages Contamination of the Approved: COS Grating Test Facility from Klinger Stages Size Code Indent No. Document No Astronomy Initial Release Follow-up Report on Possible Contamination of the COS Grating Test Facility from

  3. Integrated narrowband optical filter based on embedded subwavelength resonant grating structures

    DOE Patents [OSTI]

    Grann, Eric B. (Knoxville, TN); Sitter, Jr., David N. (Tuscon, AZ)

    2000-01-01

    A resonant grating structure in a waveguide and methods of tuning the performance of the grating structure are described. An apparatus includes a waveguide; and a subwavelength resonant grating structure embedded in the waveguide. The systems and methods provide advantages including narrowband filtering capabilities, minimal sideband reflections, spatial control, high packing density, and tunability.

  4. COS G130M FUV Grating Calibration And Qualification Plan

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    COS G130M FUV Grating Calibration And Qualification Plan Date: October 11, 1999 Document Number: COS-01-0002 Revision: Initial Release Contract No.: NAS5-98043 CDRL No. AV-02 Prepared By: S. Osterman, COS Optical Scientist, CU/CASA Date Reviewed By: E. Wilkinson, COS Instrument Scientist, CU/CASA Date

  5. COS NUV Grating Specification Date: August 23, 2000

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    COS NUV Grating Specification Date: August 23, 2000 Document Number: COS-08-0005 Revision: Revision B Contract No.: NAS5-98043 CDRL No.: N/A Prepared By: E. Wilkinson 8-12-99 E. Wilkinson, COS, Calibration Scientist, BATC Date Approved By: J. Andrews 8-25-99 J. Andrews, COS Experiment Manager, CU

  6. COS G160M FUV Grating Calibration and Qualification Plan

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    COS G160M FUV Grating Calibration and Qualification Plan Date: January 4, 2001 Document Number: COS-01-0005 Revision: Initial Release Contract No.: NAS5-98043 CDRL No. Prepared By: S. Osterman, COS Optical Scientist, CU/CASA Date Reviewed By: E. Wilkinson, COS Instrument Scientist, CU/CASA Date Approved

  7. COS NUV Grating Substrate Specification Date: August 20, 2001

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    COS NUV Grating Substrate Specification Date: August 20, 2001 Document Number: COS-08-0013 Revision: Initial Release Contract No.: NAS5-98043 CDRL No.: Prepared By: E. Wilkinson, COS Instrument Scientist, CU, BATC Date Approved By: D. Ebbets, Calibration Scientist, BATC Date Approved By: J. Andrews, COS

  8. COS G140L FUV Grating Calibration and Qualification Plan

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    COS G140L FUV Grating Calibration and Qualification Plan Date: January 4, 2001 Document Number: COS-01-0004 Revision: Initial Release Contract No.: NAS5-98043 CDRL No. Prepared By: S. Osterman, COS Optical Scientist, CU/CASA Date Reviewed By: E. Wilkinson, COS Instrument Scientist, CU/CASA Date Approved

  9. Inverse diffraction grating of Maxwell's equations in biperiodic ...

    E-Print Network [OSTI]

    2014-02-06

    K. Ito and F. Reitich, A high-order perturbation approach to profile .... as corrective lenses, anti-reflective interfaces, beam splitters, and sensors. .... To reduced the diffraction grating problem from an unbounded domain ?S ...... To test the stability of the method, some relative random noise is added to the ... Table 2 reports.

  10. Dual-Mode Switching of Diffraction Gratings Based on Azobenzene-

    E-Print Network [OSTI]

    Zhao, Yue

    -irradiated area and can be polymerized further on flood irradiation. If the concentration of the azobenzene-polymerDual-Mode Switching of Diffraction Gratings Based on Azobenzene- Polymer-Stabilized Liquid Crystals include polymer-dispersed liquid crystals (PDLC),[3,4] cholesteric liquid crystals (CLC) with or without

  11. Dynamics of ultrashort pulse propagation through fiber gratings

    E-Print Network [OSTI]

    Sipe,J. E.

    , Seldon D. Benjamin, Howard Jung, and Peter W. E. Smith Department of Electrical and Computer Engineering, University of Toronto and Photonics Research Ontario 10 King's College Road, Toronto, Ontario, Canada M5S 3G4 sensing applications. [1] Typically, fiber gratings are used with incoherent broadband sources or cw

  12. Highly Unidirectional Uniform Optical Grating Couplers, Fabricated in Standard 45nm SOI-CMOS Foundry Process

    E-Print Network [OSTI]

    Uroevi?, Stevan Lj

    2014-01-01

    This paper defines new structures of highly unidirectional uniform optical grating couplers which are all within constraints of the standard 45nm SOI-CMOS foundry process. Analysis in terms of unidirectivity and coupling efficiency is done. Maximum achieved unidirectivity (power radiation in one direction) is 98%. Unidirectional uniform gratings are fabricated in the standard 45nm SOI-CMOS foundry process. These gratings are measured and compared, using the new method of comparison, with typical bidirectional uniform gratings fabricated in the same process, in terms of coupling efficiency (in this case unidirectivity) with the standard singlemode fiber. For both types of gratings spectrum is given, measured with optical spectrum analyzer.

  13. Investigation on the properties of a laminar grating as a soft x-ray beam splitter

    SciTech Connect (OSTI)

    Liu Ying; Fuchs, Hans-Joerg; Liu Zhengkun; Chen Huoyao; He Shengnan; Fu Shaojun; Kley, Ernst-Bernhard; Tuennermann, Andreas

    2010-08-10

    Laminar-type gratings as soft x-ray beam splitters for interferometry are presented. Gold-coated grating beam splitters with 1000 lines/mm are designed for grazing incidence operation at 13.9nm. They are routinely fabricated using electron beam lithography and ion etching techniques. The laminar grating is measured to have almost equal absolute efficiencies of about 20% in the zeroth and -1st orders, which enables a fringe visibility up to 0.99 in the interferometer. The discrepancy of the grating profiles between the optimized theoretical and the experimental results is analyzed according to the comparison of the optimized simulation results and the measurement realization of the grating efficiencies. By a precise control of the grating profile, the grating efficiency in the -1st order and the fringe visibility could be improved to 25% and 1, respectively.

  14. Fiber Bragg Gratings Embedded in 3D-Printed Scaffolds

    E-Print Network [OSTI]

    Liacouras, Peter; Choudhry, Khazar; Strouse, G F; Ahmed, Zeeshan

    2015-01-01

    In recent years there has been considerable interest in utilizing embedded fiber optic based sensors for fabricating smart materials. One of the primary motivations is to provide real-time information on the structural integrity of the material so as to enable proactive actions that prevent catastrophic failure. In this preliminary study we have examined the impact of embedding on the temperature-dependent response of fiber Bragg gratings.

  15. Echelle grating multi-order imaging spectrometer utilizing a catadioptric lens

    DOE Patents [OSTI]

    Chrisp, Michael P; Bowers, Joel M

    2014-05-27

    A cryogenically cooled imaging spectrometer that includes a spectrometer housing having a first side and a second side opposite the first side. An entrance slit is on the first side of the spectrometer housing and directs light to a cross-disperser grating. An echelle immersions grating and a catadioptric lens are positioned in the housing to receive the light. A cryogenically cooled detector is located in the housing on the second side of the spectrometer housing. Light from the entrance slit is directed to the cross-disperser grating. The light is directed from the cross-disperser grating to the echelle immersions grating. The light is directed from the echelle immersions grating to the cryogenically cooled detector on the second side of the spectrometer housing.

  16. Circular grating interferometer for mapping transverse coherence area of X-ray beams

    SciTech Connect (OSTI)

    Shi, Xianbo, E-mail: xshi@aps.anl.gov; Marathe, Shashidhara; Wojcik, Michael J.; Kujala, Naresh G.; Macrander, Albert T.; Assoufid, Lahsen [Advanced Photon Source, Argonne National Laboratory, 9700 S Cass Ave, Lemont, Illinois 60439 (United States)

    2014-07-28

    A circular grating interferometer was used to map the transverse coherence area of an X-ray beam. Due to the radial symmetry of the circular grating, coherence lengths along all transverse directions were obtained simultaneously by measuring the visibility decay of interferograms recorded at different distances behind a single circular ?/2 phase grating. The technique is model-free and provides direct measurement of the complex coherence factor of the beam. The use of a circular grating also enables the unique capability of measuring the source shape profile. Sensitivity of this technique was demonstrated by detecting the small source tilt of a few degrees.

  17. Development of Fiber Bragg Grating Strain, Thermal, and Magnetic Sensors for Smart Structure Applications

    E-Print Network [OSTI]

    Emmons, Michael

    2012-01-01

    Grating Sensors, Structural Health Monitoring, vol. 2, no.sensor arrays for structural health monitoring of filamentin the field of structural health monitoring by measuring

  18. Development of pulse laser processing for mounting fiber Bragg grating

    SciTech Connect (OSTI)

    Nishimura, Aikihko; Shimada, Yukihiro; Yonemoto, Yukihiro; Suzuki, Hirokazu; Ishibashi, Hisayoshi [Quantum Beam Science Directorate, Japan Atomic Energy Agency, 8-1-7 Umebidai Kidugawa Kyoto 619-0215 (Japan); Applied Laser Technology Institute, Tsuruga Head Office, Japan Atomic Energy Agency, 65-20 Kizaki Tsuruga Fukui 914-8585 (Japan); Technical Research and Development Institute, Kumagai Gumi Co., Ltd., 2-1 Tsukudo, Shinjuku Tokyo 162-8557 (Japan)

    2012-07-11

    Pulse laser processing has been developed for the application of industrial plants in monitoring and maintenance. Surface cleaning by nano-second laser ablation was demonstrated for decontamination of oxide layers of Cr contained steel. Direct writing by femtosecond processing induced a Bragg grating in optical fiber to make it a seismic sensor for structural health monitoring. Adhesive cement was used to fix the seismic sensor on the surface of reactor coolant pipe material. Pulse laser processing and its related technologies were presented to overcome the severe accidents of nuclear power plants.

  19. Image-line voltage controlled oscillators and grating antennas

    E-Print Network [OSTI]

    Kirk, Alexander MacDonald

    1991-01-01

    Chair of Advisory Committee: Dr. Kai Chang A novel active antenna is proposed with an image-line construction. An image-line Gunn diode oscillator utilizing a cap resonator, for frequency stability, is the source module for the antenna. A varactor... is added to the source module for frequency tuning. Combining Gunn diode bias and varactor tuning, 2 percent electronic tuning bandwidth in the X-band has been achieved. The source module is an integral part of an image-line periodic grating antenna...

  20. Durable silver thin film coating for diffraction gratings

    DOE Patents [OSTI]

    Wolfe, Jesse D. (Discovery Bay, CA); Britten, Jerald A. (Oakley, CA); Komashko, Aleksey M. (San Diego, CA)

    2006-05-30

    A durable silver film thin film coated non-planar optical element has been developed to replace Gold as a material for fabricating such devices. Such a coating and resultant optical element has an increased efficiency and is resistant to tarnishing, can be easily stripped and re-deposited without modifying underlying grating structure, improves the throughput and power loading of short pulse compressor designs for ultra-fast laser systems, and can be utilized in variety of optical and spectrophotometric systems, particularly high-end spectrometers that require maximized efficiency.

  1. Broadband extreme ultraviolet probing of transient gratings in vanadium dioxide

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Sistrunk, Emily; Lawrence Livermore National Lab.; Grilj, Jakob; Ecole Polytechnique Federal de Lausanne; Jeong, Jaewoo; Samant, Mahesh G.; Gray, Alexander X.; Temple Univ. Philadelphia, PA; Drr, Hermann A.; Parkin, Stuart S. P.; et al

    2015-02-11

    Nonlinear spectroscopy in the extreme ultraviolet (EUV) and soft x-ray spectral range offers the opportunity for element selective probing of ultrafast dynamics using core-valence transitions (Mukamel et al., Acc. Chem. Res. 42, 553 (2009)). We demonstrate a step on this path showing core-valence sensitivity in transient grating spectroscopy with EUV probing. We study the optically induced insulator-to-metal transition (IMT) of a VO? film with EUV diffraction from the optically excited sample. The VO? exhibits a change in the 3p-3d resonance of V accompanied by an acoustic response. Due to the broadband probing we are able to separate the two features.

  2. COS/HST FUV Grating Shipping Container Handling Procedure Date: November 30, 1999

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    COS/HST FUV Grating Shipping Container Handling Procedure Date: November 30, 1999 Document Number: COS-05-0002 Revision: Initial Release Contract No.: NAS5-98043 CDRL No.: N/A Prepared By: Erik. Wilkinson 11-30-99 The Center for Astrophysics and Space Astronomy Reviewed: COS/HST FUV Grating Shipping

  3. Fabrication and properties of visible-light subwavelength amorphous silicon transmission gratings*

    E-Print Network [OSTI]

    -incidence light the transmission for the TE wave the electric vector parallel to the grating fingers should be alFabrication and properties of visible-light subwavelength amorphous silicon transmission gratings* Wenyong Deng and Stephen Y. Chou Department of Electrical Engineering, University of Minnesota

  4. Numerical simulation of flow and mixing behavior of solids on a moving grate combustion system

    E-Print Network [OSTI]

    Columbia University

    Numerical simulation of flow and mixing behavior of solids on a moving grate combustion system by #12;ii Numerical simulation of flow and mixing behavior of solids on a moving grate combustion system, and to a large extent influences the combustion process. Municipal solid waste (MSW) is not a uniform fuel

  5. A Bragg grating on LiNbO? waveguide for velocity-matching of electrooptic modulators

    E-Print Network [OSTI]

    Wang, Ruiyu

    2001-01-01

    An experimental study of the fabrication of a surface grating in a TiO? film on a LiNbO? substrate is described. Such a grating can be used to achieve velocity-matching between an optical wave and a RF signal in a slow-wave modulator structure. A 1...

  6. Application of Volume diffraction grating for TeraHertz lasing in Volume FEL (VFEL)

    E-Print Network [OSTI]

    V. G. Baryshevsky; K. G. Batrakov; V. I. Stolyarsky

    2002-09-06

    The generation of induced radiation in volume resonator formed by metal threads is considered. It is shown that using of such volume diffraction grating allows increasing of lasing efficiency in terahertz range. The requirements on beam and grating parameters are obtained.

  7. Slow light with flat or offset band edges in few-mode fiber with two gratings

    E-Print Network [OSTI]

    , C. J. Handmer2, C. Martijn de Sterke2 and M. J. Steel3 1 ARC Center of Excellence for Ultrahigh waveguides with dual Bragg gratings," Electron. Lett. 38, 10491051 (2002). 10. T. Erdogan and J. E. Sipe, "Tilted fiber phase gratings," J. Opt. Soc. Am. A 13, 296313 (1996). 11. S. K. Case, "Coupled-wave theory

  8. A simple scanning spectrometer based on a stretchable elastomeric reflective grating

    SciTech Connect (OSTI)

    Ghisleri, C.; Milani, P., E-mail: paolo.milani@mi.infn.it [CIMAINA and Dipartimento di Fisica, Universit di Milano, via Celoria 16, 20133 Milano (Italy); WISE srl, Piazza Duse 2, 20122 Milano (Italy); Potenza, M. A. C.; Bellacicca, A. [CIMAINA and Dipartimento di Fisica, Universit di Milano, via Celoria 16, 20133 Milano (Italy); Ravagnan, L. [WISE srl, Piazza Duse 2, 20122 Milano (Italy)

    2014-02-10

    We report a scanning optical spectrometer based on the use of a stretchable elastomeric reflective grating. The grating is obtained by supersonic cluster beam implantation of silver nanoparticles on polydimethylsiloxane previously grooved by molding to create a replica of a commercial digital versatile disk grating. The use of a stretchable grating allows the spectrometer spanning the whole optical wavelength range by solely extending the diffraction element by more than 100% of its original dimensions. The stretchable reflective optical grating shows excellent performances and stability upon thousands of stretching cycles. The use of this elastomeric element makes the optical layout and the mechanics of the spectrometer extremely simple and advantageous for those applications where spectral resolution is not a major requirement. As a proof of principle, we present the absorption spectrum of Rhodamine B in solution obtained by our spectrometer and compared to commercial instruments.

  9. Electron diffraction from free-standing, metal-coated transmission gratings Glen Gronniger, Brett Barwick, and Herman Batelaana

    E-Print Network [OSTI]

    Cronin, Alex D.

    Electron diffraction from free-standing, metal-coated transmission gratings Glen Gronniger, Brett; published online 14 September 2005 Electron diffraction from a free-standing nanofabricated transmission to the development of 100-nm period silicon nitride transmission gratings with free-standing bars.2 Such gratings

  10. Nanomechanical near-field grating apparatus and acceleration sensor formed therefrom

    DOE Patents [OSTI]

    Carr, Dustin Wade (Albuquerque, NM); Bogart, Gregory Robert (Corrales, NM); Keeler, Bianca E. N. (Albuquerque, NM)

    2008-03-04

    A nanomechanical near-field grating device is disclosed which includes two sub-gratings vertically spaced by a distance less than or equal to an operating wavelength. Each sub-grating includes a plurality of line-elements spaced apart by a distance less than or equal to the operating wavelength. A light source (e.g., a VCSEL or LED) can provide light at the operating wavelength for operation of the device. The device can operate as an active grating, with the intensity of a reflected or transmitted portion of the light varying as the relative positions of the sub-gratings are controlled by an actuator. The device can also operate as a passive grating, with the relative positions of the sub-gratings changing in response to an environmentally-induced force due to acceleration, impact, shock, vibration, gravity, etc. Since the device can be adapted to sense an acceleration that is directed laterally or vertically, a plurality of devices can be located on a common substrate to form a multi-axis acceleration sensor.

  11. Broadband extreme ultraviolet probing of transient gratings in vanadium dioxide

    SciTech Connect (OSTI)

    Sistrunk, Emily [SLAC National Acceleraor Laboratory, Menlo Park, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Grilj, Jakob [SLAC National Acceleraor Laboratory, Menlo Park, CA (United States); Ecole Polytechnique Federal de Lausanne (Switzerland); Jeong, Jaewoo [IBM Almaden Research Center, San Jose, CA (United States); Samant, Mahesh G. [IBM Almaden Research Center, San Jose, CA (United States); Gray, Alexander X. [SLAC National Acceleraor Laboratory, Menlo Park, CA (United States); Temple Univ. Philadelphia, PA (United States); Drr, Hermann A. [SLAC National Acceleraor Laboratory, Menlo Park, CA (United States); Parkin, Stuart S. P. [IBM Almaden Research Center, San Jose, CA (United States); Max Planck Inst. of Microstructure Physics, Halle (Germany); Ghr, Markus [SLAC National Acceleraor Laboratory, Menlo Park, CA (United States)

    2015-01-01

    Nonlinear spectroscopy in the extreme ultraviolet (EUV) and soft x-ray spectral range offers the opportunity for element selective probing of ultrafast dynamics using core-valence transitions (Mukamel et al., Acc. Chem. Res. 42, 553 (2009)). We demonstrate a step on this path showing core-valence sensitivity in transient grating spectroscopy with EUV probing. We study the optically induced insulator-to-metal transition (IMT) of a VO? film with EUV diffraction from the optically excited sample. The VO? exhibits a change in the 3p-3d resonance of V accompanied by an acoustic response. Due to the broadband probing we are able to separate the two features.

  12. 1790 IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 20, NO. 21, NOVEMBER 1, 2008 Interrogation of a Long-Period Grating Sensor by a

    E-Print Network [OSTI]

    Yao, Jianping

    , and Jianping Yao, Senior Member, IEEE Abstract--An interrogation technique for a long-period grating (LPG grating (AWG), the center wavelength of the LPG sensor is successfully measured using the linear--Arrayed waveguide grating (AWG), long-period grating (LPG), sensor interrogation. I. INTRODUCTION LONG

  13. System and technique for characterizing fluids using ultrasonic diffraction grating spectroscopy

    DOE Patents [OSTI]

    Greenwood, Margaret S. (Richland, WA)

    2008-07-08

    A system for determining property of multiphase fluids based on ultrasonic diffraction grating spectroscopy includes a diffraction grating on a solid in contact with the fluid. An interrogation device delivers ultrasound through the solid and a captures a reflection spectrum from the diffraction grating. The reflection spectrum exhibits peaks whose relative size depends on the properties of the various phases of the multiphase fluid. For example, for particles in a liquid, the peaks exhibit dependence on the particle size and the particle volume fraction. Where the exact relationship is know know a priori, data from different peaks of the same reflection spectrum or data from the peaks of different spectra obtained from different diffraction gratings can be used to resolve the size and volume fraction.

  14. Municipal Solid Waste as an Energy Source by Roller-Grate Incineration

    E-Print Network [OSTI]

    Karnoski, P. J.

    1979-01-01

    . Since 1965, water wall boilers equipped with roller-grates have been transforming a variety of municipal wastes into energy in Europe and Japan. The system and its capabilities are explained. Application of this technology to a United States site...

  15. The Chandra High Energy Transmission Grating: Design, Fabrication, Ground Calibration and Five Years in Flight

    E-Print Network [OSTI]

    Canizares, Claude R.

    Details of the design, fabrication, and ground and flight calibration of the High Energy Transmission Grating (HETG) on the Chandra X?Ray Observatory are presented after 5 years of flight experience. Specifics include the ...

  16. A grateful dead analysis: the relationship between concert and listening behavior

    SciTech Connect (OSTI)

    Rodriguez, Marko A; Gintautas, Vadas; Pepe, Alberto

    2008-01-01

    The Grateful Dead was an American band born out of the 1960s San Francisco, California psychedelic movement, that played music together from 1965 to 1995. Despite relatively little popular radio airtime, while on tour the Grateful Dead enjoyed a cult-like following from a fan base that numbered in the millions. Still today, some ten years after dissolution, the band remains popular according to online music services, such as last.fm. This article presents a comparative analysis between 1,590 of the Grateful Dead's live concert set lists from 1972 to 1995 and 2,616,990 Grateful Dead listening events by last.fm users from August 2005 to October 2007. While there is a strong correlation between how songs were played in concert and how they were listened to by last.fm members, the outlying songs in this trend identify interesting aspects of the band and their present-day fans.

  17. Optical transient grating measurements of micro/nanoscale thermal transport and mechanical properties

    E-Print Network [OSTI]

    Eliason, Jeffrey Kristian

    2015-01-01

    The laser-based transient grating technique was used to study phonon mediated thermal transport in bulk and nanostructured semiconductors and surface wave propagation in a monolayer of micron sized spheres. In the transient ...

  18. Defocus Grating Systems for Optical Alignment Mark Chang, Dilsom Sanchez, David Montes and Zugel Vidarte

    E-Print Network [OSTI]

    Chang, Mark J. L.

    misalignment error. It is preferable to employ a compact, passive system for the detector's optics commercial holographic film. 2. DEFOCUS PHASE GRATINGS A series of DPGs were fabricated inhouse through

  19. Effect of grating period on the excitation of multiple surface-plasmon-polariton waves guided by the interface of a metal grating

    E-Print Network [OSTI]

    photovoltaics,4-7 photo- electrochemical cells,8 solar fuel production,9 and solar thermal photovoltaics.10 Both plasmon-polariton wave, photonic crystal, grating-coupled configuration, photovoltaics 1. INTRODUCTION being a viable choice for enhancement of light harvesting in solar cells, because incident s

  20. Simple formula for the interspaces of periodic grating structures self-organized on metal surfaces by femtosecond laser ablation

    SciTech Connect (OSTI)

    Hashida, Masaki; Ikuta, Yoshinobu; Miyasaka, Yasuhiro; Tokita, Shigeki; Sakabe, Shuji [ARCBS, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan and Department of Physics, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502 (Japan)] [ARCBS, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan and Department of Physics, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502 (Japan)

    2013-04-29

    Self-organized grating structures formed on Mo and Ti metal surfaces irradiated with femtosecond laser pulses at wavelengths of 800 and 400 nm are investigated by electron microscopy. We observe the formation of the self-organized grating structures on the metals irradiated with 400-nm laser pulses at low laser fluence in narrow fluence ranges. The interspaces of the grating structure depend on the wavelength and fluence of the laser. We find that the dependence of the grating interspaces on laser fluence can be explained by a simple formula for induction of a surface-plasma wave through the parametric decay of laser light.

  1. Creating and controlling overlap in two-layer networks. Application to a mean-field SIS epidemic model with awareness dissemination

    E-Print Network [OSTI]

    Juher, David

    2015-01-01

    We study the properties of the potential overlap between two networks $A,B$ sharing the same set of $N$ nodes (a two-layer network) whose respective degree distributions $p_A(k), p_B(k)$ are given. Defining the overlap coefficient $\\alpha$ as the Jaccard index, we derive upper bounds for the minimum and maximum overlap coefficient in terms of $p_A(k)$, $p_B(k)$ and $N$. We also present an algorithm based on cross-rewiring of links to obtain a two-layer network with any prescribed $\\alpha$ inside the permitted range. Finally, to illustrate the importance of the overlap for the dynamics of interacting contagious processes, we derive a mean-field model for the spread of an SIS epidemic with awareness against infection over a two-layer network, containing $\\alpha$ as a parameter. A simple analytical relationship between $\\alpha$ and the basic reproduction number follows. Stochastic simulations are presented to assess the accuracy of the upper bounds of $\\alpha$ and the predictions of the mean-field epidemic model...

  2. Estimating consumption rates of juvenile sandbar sharks (Carcharhinus plumbeus) in Chesapeake Bay, Virginia, using a bioenergetics model

    E-Print Network [OSTI]

    Dowd, William Wesley; Brill, R W; Bushnell, P G; Musick, J A

    2006-01-01

    error analy- sis of fish bioenergetics models. Can J. Fish.importance of activity in bioenergetics models applied toA. C. Cockcroft. 1990. Bioenergetics of fishes in a high-

  3. Atmos. Chem. Phys., 6, 375402, 2006 www.atmos-chem-phys.org/acp/6/375/

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    techniques. The period of most intense biomass burning was characterized by high concen- trations analy- sis deployed during the LBA-SMOCC experiment. Model compounds reproduce quantitatively involving organic aerosol particles over tropical areas affected by biomass burning. 1 Introduction

  4. Determination of age and growth of swordfish, Xiphias gladius L., 1758,

    E-Print Network [OSTI]

    Iraklion, Greece in anal-fin spines used for age de- termination ofswordfish are depos- ited annually partial validation of the anal-fin method through marginal increment analy- sis. This analysis assumes

  5. Design of metallic nanoparticles gratings for filtering properties in the visible spectrum

    E-Print Network [OSTI]

    Brl, Y; Fehrembach, A -L; Gralak, B; Popov, E; Tayeb, G; Grangier, M; Barat, D; Bertin, H; Gogol, P; Dagens, B

    2015-01-01

    Plasmonic resonances in metallic nanoparticles are exploited to create efficient optical filtering functions. A Finite Element Method is used to model metallic nanoparticles gratings. The accuracy of this method is shown by comparing numerical results with measurements on a two-dimensional grating of gold nanocylinders with elliptic cross section. Then a parametric analysis is performed in order to design efficient filters with polarization dependent properties together with high transparency over the visible range. The behavior of nanoparticle gratings is also modelled using the Maxwell-Garnett homogenization theory and analyzed by comparison with the diffraction by a single nanoparticle. The proposed structures are intended to be included in optical systems which could find innovative applications.

  6. Effective Absorption Enhancement in Small Molecule Organic Solar Cells by Employing Trapezoid Gratings

    E-Print Network [OSTI]

    Chun-Ping, Xiang; Yu, Jin; Bin-Zong, Xu; Wei-Min, Wang; Xin, Wei; Guo-Feng, Song; Yun, Xu

    2013-01-01

    We demonstrate the optical absorption has been enhanced in the small molecule organic solar cells by employing trapezoid grating structure. The enhanced absorption is mainly attributed to both waveguide modes and surface plasmon modes, which has been simulated by using finite-difference time-domain method. The simulated results show that the surface plasmon along the semitransparent metallic Ag anode is excited by introducing the periodical trapezoid gratings, which induce high intensity field increment in the donor layer. Meanwhile, the waveguide modes result a high intensity field in acceptor layer. The increment of field improves the absorption of organic solar cells, significantly, which has been demonstrated by simulating the electrical properties. The simulated results exhibiting 31 % increment of the short-circuit current has been achieved in the optimized device, which is supported by the experimental measurement. The power conversion efficiency of the grating sample obtained in experiment exhibits an...

  7. 5000 groove/mm multilayer-coated blazed grating with 33percent efficiency in the 3rd order in the EUV wavelength range

    E-Print Network [OSTI]

    Voronov, Dmitriy L.

    2010-01-01

    5000 groove/mm multilayer-coated blazed grating with 33%groove density 2400 grooves/mm optimized for diffraction inorder. 6 A denser 3000 grooves/mm grating has demonstrated

  8. Fabrication and Characterization of On-Chip Integrated Silicon Photonic Bragg Grating and Photonic Crystal Cavity Thermometers

    E-Print Network [OSTI]

    Klimov, Nikolai N; Ahmed, Zeeshan

    2015-01-01

    We report on the fabrication and characterization of photonic-based nanothermometers, a silicon photonic Bragg grating and photonic crystal cavity. When cladded with silicon dioxide layer the sensors have at least eight times better sensitivity compared to the sensitivity of conventional fiber Bragg grating sensors. We demonstrate that these photonic thermometers are a viable temperature sensing solution.

  9. IEEE SENSORS JOURNAL, VOL. 8, NO. 11, NOVEMBER 2008 1771 Interrogation of a Long Period Grating Fiber

    E-Print Network [OSTI]

    Yao, Jianping

    period grating (LPG) fiber sensor with an arrayed-waveguide-grating (AWG)-based demul- tiplexer through of the LPG sensor through curve fitting in the form of a linear combination of Gaussian functions. By monitoring the changes of the reconstructed LPG spectrum, including the center wavelength shift

  10. Mathematical Modeling and Experimental Study of Biomass Combustion in a Thermal 108 MW Grate-Fired Boiler

    E-Print Network [OSTI]

    Rosendahl, Lasse

    -Fired Boiler Chungen Yin,*, Lasse Rosendahl, Sren K. Kr, Snnik Clausen, Sren L. Hvid, and Torben Hille, Denmark ReceiVed NoVember 16, 2007. ReVised Manuscript ReceiVed January 4, 2008 Grate boilers are widely) model for an industrial biomass-fired grate boiler, which can be used for diagnosis and optimization

  11. Genetic Diversity and Population Structure of the Arabian Horse Populations from Syria and other Countries

    E-Print Network [OSTI]

    Khanshour, Anas M

    2013-07-05

    as c testing usi lites analys enetic analy segments e 2 shows ified fragm ample of S are th tes s). the ng is, sis of an ent TR gen res Fig hom wit sou mic alle otyping in pectively. ure 3: An il ozygous...

  12. Investigating Ultrasonic Diffraction Grating Spectroscopy and Reflection Techniques for Characterizing Slurry Properties

    SciTech Connect (OSTI)

    Greenwood, Margaret S.; Salahuddin Ahmed

    2006-06-01

    The particle size of a slurry and the viscosity of a liquid or slurry are both difficult to measure on-line and in real time. The objectives of this research are to develop the following methods for such measurements: (1) ultrasonic diffraction grating spectroscopy (UDGS) to measure the particle size and concentration of a slurry, (2) develop theoretical models and computer codes to describe the passage of ultrasound through a grating surface in order to increase the sensitivity of the particle size measurement.

  13. Fiber optic temperature sensor using a grating on an angled fiber tip

    E-Print Network [OSTI]

    Varadarajan, Harini

    2000-01-01

    A fiber optic temperature sensor intended to sense temperatures up to 1400C was investigated experimentally. A key element of the sensor is a grating on the 45-angled tip of a single mode fiber. When light propagating in the fiber reaches the tip...

  14. Fingertip Force Control with Embedded Fiber Bragg Grating Sensors Yong-Lae Park1

    E-Print Network [OSTI]

    Park, Yong-Lae

    Fingertip Force Control with Embedded Fiber Bragg Grating Sensors Yong-Lae Park1 , Seok Chang Ryu1 University Stanford, CA 94305-2232, USA {ylpark, scryu, cutkosky}@stanford.edu 2 Intelligent Fiber Optic with embedded fiber optical sensors. The finger is inspired by the designs of arthropod limbs, with integral

  15. Simultaneous measurement of strain and temperature by use of a single-fiber Bragg grating

    E-Print Network [OSTI]

    Park, Namkyoo

    are the approaches for which hybrid FBG long-period grating5 LPG and a single LPG are used.6 The hybrid FBG LPG sensor consists of two FBG's and an LPG in which the mode-coupling wavelength of the LPG lies between responses of the FBG and the LPG to the two parameters. However, in this sensor scheme the temperature

  16. Plasmonic backcontact grating for P3HT:PCBM organic solar cells enabling strong optical

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    of Electrical and Electronics Engineering, Department of Physics, UNAM - National Institute of Materials Science; (050.2770) Gratings; (040.5350) Photovoltaic; (350.6050) Solar energy. References and links 1. P. A tandem solar cells: A review," Energy Environ. Sci. 2(4), 347363 (2009). 3. D. Duche, E. Drouard, J

  17. Passive Spectroscopy Bolometers, Grating- And X-Ray Imaging Crystal Spectrometers

    SciTech Connect (OSTI)

    Bitter, M; Hill, K W; Scott, S; Paul, S; Ince-Cushmann, A; Reinke, M; Rice, J; Beiersdorfer, P; Gu, M F; Lee, S G; Broennimann, C; Eikenberry, E F

    2007-11-07

    This tutorial gives a brief introduction into passive spectroscopy and describes the working principles of bolometers, a high-resolution grating spectrometer, and a novel X-ray imaging crystal spectrometer, which is of particular interest for profile measurements of the ion temperature and plasma rotation velocity on ITER and future burning plasma experiments.

  18. Dual gratings for enhanced light trapping in thin-film solar cells

    E-Print Network [OSTI]

    Dual gratings for enhanced light trapping in thin-film solar cells by a layer-transfer technique, Ireland * christian.schuster@york.ac.uk Abstract: Thin film solar cells benefit significantly from, "Progress and outlook for high-efficiency crystalline silicon solar cells," Sol. Energy Mater. Sol. Cells 65

  19. Fiber Bragg gratings for microwave photonics Chao Wang and Jianping Yao*

    E-Print Network [OSTI]

    Yao, Jianping

    Fiber Bragg gratings for microwave photonics subsystems Chao Wang and Jianping Yao* Microwave, Ontario K1N 6N5, Canada *jpyao@eecs.uottawa.ca Abstract: Microwave photonics (MWP) is an emerging filed in which photonic technologies are employed to enable and enhance functionalities in microwave systems

  20. Tunable optical fiber devices based on broadband long-period gratings and pumped microfluidics

    E-Print Network [OSTI]

    Rogers, John A.

    Tunable optical fiber devices based on broadband long-period gratings and pumped microfluidics; accepted 8 October 2003 This letter describes classes of tunable microfluidic fiber FF devices that use spectral range. Dynamic tuning is achieved by electrowetting-based pumping of microfluidic plugs back

  1. In V1 duplex cells, the form of responses to gratings depends on temporal frequency

    E-Print Network [OSTI]

    Kagan, Igor

    a sig- nificant fundamental (F1) harmonic in the responses to drifting sinusoidal luminance gratings performing a fixation task. We found that many cells responded with a significant linear (F1) modulation.Gur1,2 , and D.M.Snodderly2,3 1 Dept. of Biomedical Engineering, Technion, Haifa, Israel; 2 Schepens

  2. Optical response of grating-coupler-induced intersubband resonances: The role of Wood's anomalies

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universitt, Mnchen

    Optical response of grating-coupler-induced intersubband resonances: The role of Wood's anomalies L of Wood's anomalies. S0163-1829 97 05403-9 I. INTRODUCTION The optical and electronic properties at, e.g., a modulation- doped semiconductor heterojunction have been widely stud- ied in the recent

  3. Obstacle Avoidance Behavior of Autonomous Mobile Robot using Fiber Grating Vision Sensor

    E-Print Network [OSTI]

    Ohya, Akihisa

    spherical wave interfere one another and tetragonal array of spot light is generated ahead of the FG, 305-8573, Japan fyukio, ohya, yutag@roboken.esys.tsukuba.ac.jp Abstract In this paper, we mention 3D shape of objects. Fiber Grating Laser Laser Spot Figure 3: 2-dimensional spot array generated

  4. Incorporation of nanovoids into metallic gratings for broadband plasmonic organic solar

    E-Print Network [OSTI]

    Park, Namkyoo

    Incorporation of nanovoids into metallic gratings for broadband plasmonic organic solar cells investigation and optimization of a newly proposed plasmonic organic solar cell geometry based. Kietzke, "Recent advances in organic solar cells," Adv. Optoelectron. 2007, 40285 (2007). 2. P. E. Shaw, A

  5. Investigation of long-period fiber gratings induced by high-intensity femtosecond UV laser pulses

    E-Print Network [OSTI]

    Nikogosyan, David N.

    efficiency with that for other existing meth- ods of recording. We studied the temperature sensing properties changes in the fiber core induced by thermal heating, were developed. They include the use of a CO2 laserInvestigation of long-period fiber gratings induced by high-intensity femtosecond UV laser pulses

  6. High-power laser beam control by PTR Bragg gratings Igor Ciapurin(1)

    E-Print Network [OSTI]

    Glebov, Leon

    High-power laser beam control by PTR Bragg gratings Igor Ciapurin(1) , Vadim Smirnov(1,2) , George is a photo-thermo-refractive (PTR) glass, and used for high-power laser beam control. Exceptionally narrow combining (SBC) is considered as a promising way for high power laser systems design in numerous

  7. Enhanced efficiency of thin film solar cells using a shifted dual grating plasmonic structure

    E-Print Network [OSTI]

    Levy, Uriel

    Enhanced efficiency of thin film solar cells using a shifted dual grating plasmonic structure Ronen, "Light absorption enhancement in thin-film solar cells using whispering gallery modes in dielectric in thin film solar cells," Appl. Phys. Lett. 99(13), 131114 (2011). 10. H. R. Stuart and D. G. Hall

  8. my life. I'm grateful to the GAL-CIT community who made me

    E-Print Network [OSTI]

    Haile, Sossina M.

    40 41 my life. I'm grateful to the GAL- CIT community who made me feel like a family member. I hope company, Learning Tree International, and about his current projects. What emerged is a picture of someone who has successfully applied a rigorous, analytical approach to problem solving, whether

  9. 5000 groove/mm multilayer-coated blazed grating with 33percent efficiency in the 3rd order in the EUV wavelength range

    SciTech Connect (OSTI)

    Advanced Light Source; Voronov, Dmitriy L.; Anderson, Erik; Cambie, Rossana; Salmassi, Farhad; Gullikson, Eric; Yashchuk, Valeriy; Padmore, Howard; Ahn, Minseung; Chang, Chih-Hao; Heilmann, Ralf; Schattenburg, Mark

    2009-07-07

    We report on recent progress in developing diffraction gratings which can potentially provide extremely high spectral resolution of 105-106 in the EUV and soft x-ray photon energy ranges. Such a grating was fabricated by deposition of a multilayer on a substrate which consists ofa 6-degree blazed grating with a high groove density. The fabrication of the substrate gratings was based on scanning interference lithography and anisotropic wet etch of silicon single crystals. The optimized fabrication process provided precise control of the grating periodicity, and the grating groove profile, together with very short anti-blazed facets, and near atomically smooth surface blazed facets. The blazed grating coated with 20 Mo/Si bilayers demonstrated a diffraction efficiency in the third order as high as 33percent at an incidence angle of 11? and wavelength of 14.18 nm.

  10. Formation of binary phase gratings in photopolymer-liquid crystal composites by a surface-controlled anisotropic phase separation

    SciTech Connect (OSTI)

    Park, Jae-Hong; Khoo, Iam Choon; Yu, Chang-Jae; Jung, Min-Sik; Lee, Sin-Doo [216 Electrical Engineering East, Pennsylvania State University, University Park, Pennsylvania 16802 (United States); School of Electrical Engineering no. 32, Seoul National University, Kwanak P.O. Box 34, Seoul 151-600 (Korea, Republic of)

    2005-01-10

    We report on formation of binary phase gratings in photopolymer-liquid crystal (PLC) composites using a surface-controlled phase separation method. The binary nature of the PLC phase gratings is produced by employing a single step photo-ablation through an amplitude photomask which precisely controls the interfacial interactions between the LC and the photopolymer on the alignment layer. A subsequent illumination of the ultraviolet light onto the whole PLC promotes an anisotropic phase separation resulting in the formation of distinct binary patterns for the PLC structure. The electrically tunable diffraction properties of the binary phase gratings are presented.

  11. Fabrication of high-throughput critical-angle X-ray transmission gratings for wavelength-dispersive spectroscopy

    E-Print Network [OSTI]

    Bruccoleri, Alexander Robert

    2013-01-01

    The development of the critical-angle transmission (CAT) grating seeks both an order of magnitude improvement in the effective area, and a factor of three increase in the resolving power of future space-based, soft x-ray ...

  12. Design and analysis of a scanning beam interference lithography system for patterning gratings with nanometer-level distortions

    E-Print Network [OSTI]

    Konkola, Paul Thomas, 1973-

    2003-01-01

    This thesis describes the design and analysis of a system for patterning large-area gratings with nanometer level phase distortions. The novel patterning method, termed scanning beam interference lithography (SBIL), uses ...

  13. Study on differences between high contrast grating reflectors for TM and TE polarizations and their impact on VCSEL designs

    E-Print Network [OSTI]

    Chung, Il-Sug

    2015-01-01

    A theoretical study of differences in broadband high-index-contrast grating (HCG) reflectors for TM and TE polarizations is presented, covering various grating parameters and properties of HCGs. It is shown that the HCG reflectors for TM polarization (TM HCG reflectors) have much thicker grating thicknesses and smaller grating periods than the TE HCG reflectors. This difference is found to originate from the different boundary conditions met for the electric field of each polarization. Due to this difference, the TM HCG reflectors have much shorter evanescent extension of HCG modes into low-refractive-index media surrounding the HCG. This enables to achieve a very short effective cavity length for VCSELs, which is essential for ultrahigh speed VCSELs and MEMS-tunable VCSELs. The obtained understandings on polarization dependences will be able to serve as important design guidelines for various HCG-based devices.

  14. Three-dimensional theory of Smith-Purcell free-electron laser with dielectric loaded grating

    SciTech Connect (OSTI)

    Cao, Miaomiao, E-mail: mona486@yeah.net; Li, Ke, E-mail: like3714@163.com [Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China); University of Chinese Academy of Sciences, School of Electronic Science and Technology, Beijing 100049 (China); Liu, Wenxin, E-mail: lwenxin@mail.ie.ac.cn; Wang, Yong, E-mail: wangyong3845@sina.com [Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190 (China)

    2014-09-14

    A dielectric loaded rectangular grating for Smith-Purcell devices is proposed in this paper. Regarding the electron beam as a moving plasma dielectric, a three dimensional (3D) linear theory of beam-wave interaction is developed. The first and second order growth rates are calculated, which are obtained by expanding hot dispersion equation at synchronous point. The results show that the cutoff frequency is affected by grating width. The dispersion curve becomes flatter and shifts towards lower frequency by loading dielectric in grooves. The simulation results, which are obtained by a 3D particle-in-cell code, are in good agreement with theoretical calculations. Compared the first and second order growth rate, it shows that the discrepancy is large when beam parameters are selected with high values. In this case, it is necessary to apply the second order growth rate, which can accurately describe the process of beam-wave interaction.

  15. Energy exchange between electromagnetic waves on the director diffraction grating in planar waveguide with nematic layer

    SciTech Connect (OSTI)

    Ledney, M. F. Tarnavskyy, A. S.

    2013-09-15

    The energy exchange between two coupled TE modes on the diffraction grating of the director in a planar waveguide containing a nematic liquid crystal layer is calculated. The diffraction grating is induced by an external electric field in the nematic layer with periodic anchoring energy at the waveguide surface. The intensity of the signal mode at the output of the nematic layer is calculated as a function of the amplitude and period of the anchoring-energy modulation, the nematic layer sizes, and the electric-field strength. The cases of modes with the same and opposite directions are considered. Analytical expressions for the maximum intensities of the signal mode are derived. In both cases the maximum intensity of the signal mode increases with an increase in the electric-field strength.

  16. Numerically optimized structures for dielectric asymmetric dual-grating laser accelerators

    SciTech Connect (OSTI)

    Aimidula, A. [Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875 (China) [Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875 (China); Cockcroft Institute, Daresbury Sci-Tech, Warrington WA44AD (United Kingdom); Physics Department, University of Liverpool, Liverpool (United Kingdom); Bake, M. A.; Wan, F.; Xie, B. S., E-mail: bsxie@bnu.edu.cn [Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875 (China); Welsch, C. P. [Cockcroft Institute, Daresbury Sci-Tech, Warrington WA44AD (United Kingdom) [Cockcroft Institute, Daresbury Sci-Tech, Warrington WA44AD (United Kingdom); Physics Department, University of Liverpool, Liverpool (United Kingdom); Xia, G.; Mete, O. [Cockcroft Institute, Daresbury Sci-Tech, Warrington WA44AD (United Kingdom) [Cockcroft Institute, Daresbury Sci-Tech, Warrington WA44AD (United Kingdom); School of Physics and Astronomy, University of Manchester, Manchester (United Kingdom); Uesaka, M.; Matsumura, Y. [Department of Nuclear Engineering and Management, The University of Tokyo, Tokai 319-1188 (Japan)] [Department of Nuclear Engineering and Management, The University of Tokyo, Tokai 319-1188 (Japan); Yoshida, M.; Koyama, K. [High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801 (Japan)] [High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801 (Japan)

    2014-02-15

    Optical scale dielectric structures are promising candidates to realize future compact, low cost particle accelerators, since they can sustain high acceleration gradients in the range of GeV/m. Here, we present numerical simulation results for a dielectric asymmetric dual-grating accelerator. It was found that the asymmetric dual-grating structures can efficiently modify the laser field to synchronize it with relativistic electrons, therefore increasing the average acceleration gradient by ?10% in comparison to symmetric structures. The optimum pillar height which was determined by simulation agrees well with that estimated analytically. The effect of the initial kinetic energy of injected electrons on the acceleration gradient is also discussed. Finally, the required laser parameters were calculated analytically and a suitable laser is proposed as energy source.

  17. Master dye laser oscillator including a specific grating assembly for use therein

    DOE Patents [OSTI]

    Davin, J.M.

    1992-09-01

    A dye laser oscillator for producing a tuned dye beam is disclosed herein and includes, among other components, a beam output coupling assembly, a dye cell assembly, a beam expander assembly, an etalon assembly, and a grating assembly. Each of three assemblies is vertically supported from a horizontal base so as to be readily removable from the base without interference from or interfering with the other assemblies. The particular grating assembly disclosed is specifically designed for proper optical alignment with the intended path of the dye beam to be produced and for accurate pivotal movement relative to the beam path in order to function as a coarse tuning mechanism in the production of the ultimately tuned beam. 5 figs.

  18. Narrow band wavelength selective filter using grating assisted single ring resonator

    SciTech Connect (OSTI)

    Prabhathan, P. Murukeshan, V. M.

    2014-09-15

    This paper illustrates a filter configuration which uses a single ring resonator of larger radius connected to a grating resonator at its drop port to achieve single wavelength selectivity and switching property with spectral features suitable for on-chip wavelength selection applications. The proposed configuration is expected to find applications in silicon photonics devices such as, on-chip external cavity lasers and multi analytic label-free biosensors. The grating resonator has been designed for a high Q-factor, high transmittivity, and minimum loss so that the wavelength selectivity of the device is improved. The proof-of-concept device has been demonstrated on a Silicon-on-Insulator (SOI) platform through electron beam lithography and Reactive Ion Etching (RIE) process. The transmission spectrum shows narrow band single wavelength selection and switching property with a high Free Spectral Range (FSR) ?60 nm and side band rejection ratio >15 dB.

  19. An experimental study of low-frequency amplitude noise in a fibre Bragg grating laser diode

    SciTech Connect (OSTI)

    Zholnerov, V S; Ivanov, A V; Kurnosov, V D; Kurnosov, K V; Romantsevich, V I; Chernov, R V

    2013-09-30

    We have studied the amplitude noise in a fibre Bragg grating laser diode. It has been shown that discontinuities in noise characteristics correlate with those in the power current and spectral characteristics of the laser diode, whereas the noise characteristics of the pump source have no such discontinuities. The highest noise level has been observed at pump currents corresponding to concurrent generation of two longitudinal modes. (lasers)

  20. System and technique for characterizing fluids using ultrasonic diffraction grating spectroscopy

    DOE Patents [OSTI]

    Greenwood, Margaret S.

    2005-04-12

    A system for determining a property of a fluid based on ultrasonic diffraction grating spectroscopy includes a diffraction grating on a solid in contact with the fluid. An interrogation device delivers ultrasound through the solid and a captures a reflection spectrum from the diffraction grating. The reflection spectrum including a diffraction order equal to zero exhibits a peak whose location is used to determine speed of sound in the fluid. A separate measurement of the acoustic impedance is combined with the determined speed of sound to yield a measure of fluid density. A system for determining acoustic impedance includes an ultrasonic transducer on a first surface of a solid member, and an opposed second surface of the member is in contact with a fluid to be monitored. A longitudinal ultrasonic pulse is delivered through the solid member, and a multiplicity of pulse echoes caused by reflections of the ultrasonic pulse between the solid-fluid interface and the transducer-solid interface are detected. The decay rate of the detected echo amplitude as a function of echo number is used to determine acoustic impedance.

  1. Transmission comb of a distributed Bragg reflector induced by two surface dielectric gratings

    E-Print Network [OSTI]

    Zhao, Xiaobo; Zhang, Yongyou

    2015-01-01

    With transfer matrix theory, we study the transmission of a distributed Bragg reflector (DBR) with two dielectric gratings on top and on the bottom. Owing to the diffraction of the two gratings, the transmission shows a comb-like spectrum which red shifts with increasing the grating period during the forbidden band of the DBR. The number density of the comb peaks increases with increasing the number of the DBR cells, while the ratio of the average full width at half maximum (FWHM) of the transmission peaks in the transmission comb to the corresponding average free spectral range, being about 0.04 and 0.02 for the TE and TM incident waves, is almost invariant. The average FWHM of the TM waves is about half of the TE waves, and both they could be narrower than 0.1 nm. In addition, the transmission comb peaks of the TE and TM waves can be fully separated during certain waveband. We further prove that the transmission comb is robust against the randomness of the heights of the DBR layers, even when a 15\\% randomn...

  2. Sensitivity enhancement of grating interferometer based two-dimensional sensor arrays using two-wavelength readout

    SciTech Connect (OSTI)

    Ferhanoglu, Onur; Urey, Hakan

    2011-07-01

    Diffraction gratings integrated with microelectromechanical systems (MEMS) sensors offer displacement measurements with subnanometer sensitivity. However, the sensitivity of the interferometric readout may drop significantly based on the gap between the grating and the reference surface. A two-wavelength (2-{lambda}) readout method was previously tested using a single MEMS sensor for illustrating increased displacement measurement capability. This work demonstrates sensitivity enhancement on a sensor array with large scale parallelization ({approx}20,000 sensors). The statistical representation, which is developed to model sensitivity enhancement within a grating based sensor array, is supported by experimental results using a thermal sensor array. In the experiments, two lasers at different wavelengths (633 and 650 nm) illuminate the thermal sensor array from the backside, time-sequentially. The diffracted first order light from the array is imaged onto a single CCD camera. The target scene is reconstructed by observing the change in the first diffracted order diffraction intensity for both wavelengths. Merging of the data from two measurements with two lasers was performed by taking the larger of the two CCD measurements with respect to the reference image for each sensor. {approx}30% increase in the average sensitivity was demonstrated for a 160x120 pixel IR sensor array. Proposed architecture is also applicable to a variety of sensing applications, such as parallel biosensing and atomic force microscopy, for improved displacement measurements and enhanced sensitivity.

  3. High-order multilayer coated blazed gratings for high resolution soft x-ray spectroscopy

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Voronov, Dmitriy L.; Goray, Leonid I.; Warwick, Tony; Yashchuk, Valeriy V.; Padmore, Howard A.

    2015-02-17

    A grand challenge in soft x-ray spectroscopy is to drive the resolving power of monochromators and spectrometers from the 104 achieved routinely today to well above 105. This need is driven mainly by the requirements of a new technique that is set to have enormous impact in condensed matter physics, Resonant Inelastic X-ray Scattering (RIXS). Unlike x-ray absorption spectroscopy, RIXS is not limited by an energy resolution dictated by the core-hole lifetime in the excitation process. Using much higher resolving power than used for normal x-ray absorption spectroscopy enables access to the energy scale of soft excitations in matter. Thesemoreexcitations such as magnons and phonons drive the collective phenomena seen in correlated electronic materials such as high temperature superconductors. RIXS opens a new path to study these excitations at a level of detail not formerly possible. However, as the process involves resonant excitation at an energy of around 1 keV, and the energy scale of the excitations one would like to see are at the meV level, to fully utilize the technique requires the development of monochromators and spectrometers with one to two orders of magnitude higher energy resolution than has been conventionally possible. Here we investigate the detailed diffraction characteristics of multilayer blazed gratings. These elements offer potentially revolutionary performance as the dispersive element in ultra-high resolution x-ray spectroscopy. In doing so, we have established a roadmap for the complete optimization of the grating design. Traditionally 1st order gratings are used in the soft x-ray region, but we show that as in the optical domain, one can work in very high spectral orders and thus dramatically improve resolution without significant loss in efficiency.less

  4. Magneto-exciton-polariton condensation in a sub-wavelength high contrast grating based vertical microcavity

    SciTech Connect (OSTI)

    Fischer, J.; Brodbeck, S.; Worschech, L.; Kamp, M.; Schneider, C.; Hfling, S.; Zhang, B.; Wang, Z.; Deng, H.

    2014-03-03

    We comparably investigate the diamagnetic shift of an uncoupled quantum well exciton with a microcavity exciton-polariton condensate on the same device. The sample is composed of multiple GaAs quantum wells in an AlAs microcavity, surrounded by a Bragg reflector and a sub-wavelength high contrast grating reflector. Our study introduces an independent and easily applicable technique, namely, the measurement of the condensate diamagnetic shift, which directly probes matter contributions in polariton condensates and hence discriminates it from a conventional photon laser.

  5. Microelectromechanical mirrors and electrically-programmable diffraction gratings based on two-stage actuation

    SciTech Connect (OSTI)

    Allen, James J.; Sinclair, Michael B.; Dohner, Jeffrey L.

    2005-11-22

    A microelectromechanical (MEM) device for redirecting incident light is disclosed. The MEM device utilizes a pair of electrostatic actuators formed one above the other from different stacked and interconnected layers of polysilicon to move or tilt an overlying light-reflective plate (i.e. a mirror) to provide a reflected component of the incident light which can be shifted in phase or propagation angle. The MEM device, which utilizes leveraged bending to provide a relatively-large vertical displacement up to several microns for the light-reflective plate, has applications for forming an electrically-programmable diffraction grating (i.e. a polychromator) or a micromirror array.

  6. Enhancement of near-infrared absorption in graphene with metal gratings

    SciTech Connect (OSTI)

    Zhao, B.; Zhang, Z. M., E-mail: zhuomin.zhang@me.gatech.edu [G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States); Zhao, J. M. [G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 (United States); School of Energy Science and Engineering, Harbin Institute of Technology, Harbin (China)

    2014-07-21

    Graphene has been demonstrated as a good candidate for ultrafast optoelectronic devices. However, graphene is essentially transparent in the visible and near infrared with an absorptivity of 2.3%, which has largely limited its application in photon detection. This Letter demonstrates that the absorptance in a monatomic graphene layer can be greatly enhanced to nearly 70%, thanks to the localized strong electric field resulting from magnetic resonances in deep metal gratings. Furthermore, the resonance frequency is essentially not affected by the additional graphene layer. The method presented here may benefit the design of next-generation graphene-based optical and optoelectronic devices.

  7. Fiber Bragg Grating Sensor as Valuable Technological Platform for New Generation of Superconducting Magnets

    E-Print Network [OSTI]

    Chiuchiolo, A; Cusano, A; Bajko, M; Perez, J C; Bajas, H; Viret, P; Giordano, M; Breglio, G

    2014-01-01

    New generation of superconducting magnets for high energy applications designed, manufactured and tested at the European Organization for Nuclear Research (CERN) require the implementation of reliable sensors able to monitor the mechanical stresses affecting the winding from fabrication to operation in magnetic field of 13 T. This work deals with the embedding of Fiber Bragg Grating sensors in a short model Nb3Sn dipole magnet in order to monitor the strain developed in the coil during the cool down to 1.9 K, the powering up to 15.8 kA and the warm up, offering perspectives for the replacement of standard strain gauges.

  8. Long period grating refractive-index sensor: optimal design for single wavelength interrogation

    SciTech Connect (OSTI)

    Kapoor, Amita; Sharma, Enakshi K.

    2009-11-01

    We report the design criteria for the use of long period gratings (LPGs) as refractive-index sensors with output power at a single interrogating wavelength as the measurement parameter. The design gives maximum sensitivity in a given refractive-index range when the interrogating wavelength is fixed. Use of the design criteria is illustrated by the design of refractive-index sensors for specific application to refractive-index variation of a sugar solution with a concentration and detection of mole fraction of xylene in heptane (paraffin).

  9. MRI-compatible Haptics: Feasibility of using optical fiber Bragg grating strain-sensors to detect deflection of needles in an MRI environment

    E-Print Network [OSTI]

    Park, Yong-Lae

    MRI-compatible Haptics: Feasibility of using optical fiber Bragg grating strain-sensors to detect, Stanford University, Stanford, CA, United States, 4 Intelligent Fiber Optic Systems Corporation, Santa fiber-optic-based force and deflection sensors based on fiber Bragg grating (FBG) technology have been

  10. Analysis of higher harmonic contamination with a modified approach using a grating analyser

    SciTech Connect (OSTI)

    Gupta, Rajkumar Modi, Mohammed H.; Lodha, G. S.; Kumar, M.; Chakera, J. A.

    2014-04-15

    Soft x-ray spectra of the toroidal grating monochromator (TGM) at the reflectivity beamline of Indus-1 synchrotron source are analyzed for higher harmonic contribution. A diffraction grating of central line spacing 1200 l/mm is used to disperse the monochromatic beam received from TGM to quantify the harmonic contents in the 50360 wavelength range. In order to calculate the harmonic contamination, conventionally the intensity of higher order peak is divided by first order peak intensity of the desired wavelength. This approach is found to give wrong estimate as first order peak itself is overlapped by higher order peaks. In the present study, a modified approach has been proposed to calculate harmonic contamination where the intensity contributions of overlapping orders have been removed from the first order diffraction peak of the desired wavelength. It is found that the order contamination in the TGM spectra is less than 15% in the wavelength range of 90180 . The total harmonic contribution increases from 6%60% in the wavelength range of 150260 . The critical wavelength of Indus-1 is 61 hence the harmonic contamination below 90 is significantly low. The results obtained with modified approach match well with those obtained by quantitative analysis of multilayer reflectivity data. The obtained higher harmonics data are used to fit the transmission of aluminum edge filter in the 120360 wavelength range.

  11. Optical micrograph of a Bragg grating photodeposited in the cladding of a 180 m diameter optical fiber

    E-Print Network [OSTI]

    Wolberg, George

    fiber Grating: 5-6 m lines, 8 m spaces Inserts and removes light from fiber core d variable porosity and truck trailers or retrofitted into existing units, these sensors offer rapid, noninvasive analytical on the subject of optical biopsy. Optical biopsy involves the use of light and photonic technology to diagnose

  12. Detection of methicillin-resistant staphylococci by biosensor assay consisting of nanoscale films on optical fiber long-period gratings

    E-Print Network [OSTI]

    Heflin, Randy

    -period grating (LPG) optical fiber by immersion alternately in poly-allylamine hydrochloride and in poly-1-[p-(3 groups on the LPG-ISAM. The terminal carboxyl groups were covalently conjugated to monoclonal antibodies exposure of the LPG-ISAM to 102 colony forming units (CFU)/ml of MR S. aureus (MRSA) for 50 min., light

  13. Analysis of optical response of long period fiber gratings to nm-thick thin-film coatings

    E-Print Network [OSTI]

    Heflin, Randy

    and experimentally demonstrated that the resonant wavelength of long period fiber gratings (LPG) can be shifted of the film and/or the variation of its refractive index. These results demonstrate the sensitivity of LPG devices and high-performance index/thickness-sensing LPG-based fiber sensors for detecting optical

  14. Devices useful for vacuum ultraviolet beam characterization including a movable stage with a transmission grating and image detector

    SciTech Connect (OSTI)

    Gessner, Oliver; Kornilov, Oleg A; Wilcox, Russell B

    2013-10-29

    The invention provides for a device comprising an apparatus comprising (a) a transmission grating capable of diffracting a photon beam into a diffracted photon output, and (b) an image detector capable of detecting the diffracted photon output. The device is useful for measuring the spatial profile and diffraction pattern of a photon beam, such as a vacuum ultraviolet (VUV) beam.

  15. Efficiency enhancement in a light-emitting diode with a two-dimensional surface grating photonic crystal

    E-Print Network [OSTI]

    Baba, Toshihiko

    Efficiency enhancement in a light-emitting diode with a two-dimensional surface grating photonic 21 November 2003 We demonstrate a light-emitting diode exhibiting 1.72.7-fold enhancement in light light emitting diode LED , the ef- ficiency is limited to several percents by a low light extrac- tion

  16. Multichannel interferometry using high-order rotating diffraction gratings John Howard, George B. Warr, and Peter Dodds

    E-Print Network [OSTI]

    Howard, John

    . Warr, and Peter Dodds Plasma Research Laboratory, Research School of Physical Sciences and Engineering National University (ANU), two new types of multichannel density interferometer basedon scanning and multibeam rotating diffraction gratings have beenrecently proposed.3-5 The first type of interferometer

  17. JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 15, NO. 8, AUGUST 1997 1503 Ultrashort Pulse Reflection from Fiber Gratings

    E-Print Network [OSTI]

    Sipe,J. E.

    are with the Department of Electrical and Computer Engineering, University of Toronto and Ontario Laser and Lightwave are used with narrow-band sources or with pulses whose spectral bandwidth is narrower than the grating, and the Ontario Laser and Lightwave Research Center. L. R. Chen, S. D. Benjamin, and P. W. E. Smith

  18. December 1, 2000 / Vol. 25, No. 23 / OPTICS LETTERS 1693 High-frequency Bragg gratings in a photothermorefractive glass

    E-Print Network [OSTI]

    Glebov, Leon

    .g., in data storage systems5,6 or solar astronomy, in the short-wavelength spectral region.7 One of the media, and near-IR spectral regions, and its induced refractive-index change reaches 1023 . UV radiation of a He in the visible spectral region, because the phase gratings are erased with exposure to optical radiation below

  19. A soft x-ray transmission grating imaging-spectrometer for the National Ignition Facility

    SciTech Connect (OSTI)

    Moore, A S; Guymer, T M; Kline, J L; Morton, J; Taccetti, M; Lanier, N E; Bentley, C; Workman, J; Peterson, B; Mussack, K; Cowan, J; Prasad, R; Richardson, M; Burns, S; Kalantar, D H; Benedetti, L R; Bell, P; Bradley, D; Hsing, W; Stevenson, M

    2012-05-01

    A soft x-ray transmission grating spectrometer has been designed for use on high energy-density physics experiments at the National Ignition Facility (NIF); coupled to one of the NIF gated x-ray detectors (GXD) it records sixteen time-gated spectra between 250 and 1000eV with 100ps temporal resolution. The trade-off between spectral and spatial resolution leads to an optimized design for measurement of emission around the peak of a 100-300eV blackbody spectrum. Performance qualification results from the NIF, the Trident Laser Facility and VUV beamline at the National Synchrotron Light Source (NSLS), evidence a <100{micro}m spatial resolution in combination with a source-size limited spectral resolution that is <10eV at photon energies of 300eV.

  20. High resolution transmission grating spectrometer for edge toroidal rotation measurements of tokamak plasmas

    SciTech Connect (OSTI)

    Graf, A.; May, M.; Beiersdorfer, P.; Magee, E.; Lawrence, M.; Rice, J. [University of California, Davis, California 95616 (United States); Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

    2004-10-01

    We present a high throughput (f/3) visible (3500-7000 A) Doppler spectrometer for toroidal rotation velocity measurements of the Alcator C-Mod tokamak plasma. The spectrometer has a temporal response of 1 ms and a rotation velocity sensitivity of {approx}10{sup 5} cm/s. This diagnostic will have a tangential view and map out the plasma rotation at several locations along the outer half of the minor radius (r/a>0.5). The plasma rotation will be determined from the Doppler shifted wavelengths of D{sub {alpha}} and magnetic and electric dipole transitions of highly ionized impurities in the plasma. The fast time resolution and high spectral resolving power are possible due to a 6 in. diam circular transmission grating that is capable of {lambda}/{delta}{lambda}{approx}15 500 at 5769 A in conjunction with a 50 {mu}m slit.

  1. High Resolution Transmission Grating Spectrometer for Edge Toroidal Rotation Measurements of Tokamak Plasmas

    SciTech Connect (OSTI)

    Graf, A; May, M; Beiersdorfer, P; Magee, E; Lawrence, M; Terry, J; Rice, J

    2004-04-29

    We present a high throughput (f/3) visible (3500 - 7000 Angstrom) Doppler spectrometer for toroidal rotation velocity measurements of the Alcator C-Mod tokamak plasma. The spectrometer has a temporal response of 1 ms and a rotation velocity sensitivity of {approx}10{sup 5} cm/s. This diagnostic will have a tangential view and map out the plasma rotation at several locations along the outer half of the minor radius (r/a > 0.5). The plasma rotation will be determined from the Doppler shifted wavelengths of D{sub alpha} and magnetic and electric dipole transitions of highly ionized impurities in the plasma. The fast time resolution and high spectral resolving power are possible due to a 6' diameter circular transmission grating that is capable of {lambda}/{Delta}{lambda} {approx} 15500 at 5769 Angstrom in conjunction with a 50 {micro}m slit.

  2. Structural Health Monitoring of Superconducting Magnets at CERN Using Fiber Bragg Grating Sensors

    E-Print Network [OSTI]

    Chiuchiolo, A; Perez, J C; Bajas, H; Guinchard, M; Giordano, M; Breglio, G; Consales, M; Cusano, A

    2014-01-01

    The use of Fiber Bragg Grating sensors is becoming particularly challenging for monitoring different parameters in extreme operative conditions such as ultra-low temperatures, high electromagnetic fields and strong mechanical stresses. This work reports the use of the FBG for a new generation of accelerator magnets with the goal to develop an adequate sensing technology able to provide complementary or alternative information to the conventional strain gauges through the whole service life of the magnet. The study is focused on the mechanical performances of the magnet structure, which has to preserve the sensitive coils from any damage during the entire magnet fabrication process preventing even microscopic movements of the winding that can eventually initiate a transition from superconducting to normal conducting state of the material used (called in the specific literature as quench). The FBGs have been glued on the aluminium structure of two magnets prototypes by using an adhesive suitable for cryog...

  3. 5000 Groove/mm multilayer-coated blazed grating with 33% efficiency in the 3rd order in the EUV wavelength range

    E-Print Network [OSTI]

    Schattenburg, Mark Lee

    We report on recent progress in developing diffraction gratings which can potentially provide extremely high spectral resolution of 10[superscript 5]-10[superscript 6] in the EUV and soft x-ray photon energy ranges. Such ...

  4. Spectrally enhancing near-field radiative heat transfer by exciting magnetic polariton in SiC gratings

    E-Print Network [OSTI]

    Yang, Yue

    2015-01-01

    In the present work, we theoretically demonstrate, for the first time, that near field radiative transport between 1D periodic grating microstructures separated by subwavelength vacuum gaps can be significantly enhanced by exciting magnetic resonance or polariton. Fluctuational electrodynamics that incorporates scattering matrix theory with rigorous coupled wave analysis is employed to exactly calculate the near field radiative heat flux between two SiC gratings. Besides the well known coupled surface phonon polaritons (SPhP), an additional spectral radiative heat flux peak, which is due to magnetic polariton, is found within the phonon absorption band of SiC. The mechanisms, behaviors and interplays between magnetic polariton, coupled SPhP, single interface SPhP, and Wood's anomaly in the near field radiative transport are elucidated in detail. The findings will open up a new way to control near field radiative heat transfer by magnetic resonance with micro or nanostructured metamaterials.

  5. Fabrication of high aspect grating using bonded substrate for X-ray refraction imaging by Talbot-Lau interferometer

    SciTech Connect (OSTI)

    Tada, Takuji; Murakoshi, Dai; Ishii, Hiroyasu; Hashimoto, Atsushi; Kaneko, Yasuhisa; Ito, Wataru; Agano, Toshitaka [Medical Systems Research and Development Center, R and D Management Headquarters, FUJIFILM Corp., 798, Miyanodai, Kaisei-machi, Ashigarakami-gun, Kanagawa 258-8538 (Japan); Imaging Technology Center, R and D Management Headquarters, FUJIFILM Corp., 798, Miyanodai, Kaisei-machi, Ashigarakami-gun, Kanagawa 258-8538 (Japan)

    2012-07-31

    In order to improve the image quality of X-ray refraction images using a Talbot-Lau interferometer, we have been attempting to fabricate gratings with high aspect ratio. In our attempt, deep grooves of grating structure were channeled on a Si substrate bonded by Au diffusion bonding method, and the grooves were filled with Au where the Au layer used for the bonding Si substrate was acting as a seed layer of Au electroplating. From the results of a visibility measurement and a cross sectional SEM image, it was confirmed that the grooves with a pitch of 5.8 {mu}m and a depth of 100 {mu}m could be successfully filled with Au over a large area of 72 Multiplication-Sign 80 mm{sup 2}. Using this grating, the X-ray refraction images for the cartilage of a knee joint of a livestock pig could be obtained where SPS method was employed for the single-shot image acquisition.

  6. Replication of a Holographic Ion-etched Spherical Blazed Grating for use at Extreme-Ultraviolet Wavelengths: Efficiency

    SciTech Connect (OSTI)

    Kowalski,M.; Barbee, T.; Hunter, W.

    2006-01-01

    Using synchrotron radiation, we have measured the efficiency at an angle of incidence of 10 deg of a holographic ion-etched spherical blazed grating and three of its fourth-generation replicas. The measured efficiency profile of replicas 1 and 3 prior to multilayer coating oscillated from thin-film interference produced by the replicas' Al/Al2O3?/SiO2 structure. A Mo2C/Si multilayer coating was applied to the master grating and replicas 1 and 2. After coating, the maximum grating efficiency occurred in the -2nd order and the maximum values were 12.4% at 143.8 Angstroms for the master and 11.6% at 145.2 Angstroms for replicas 1 and 2. On the basis of measurements obtained after coating, the derived groove efficiency was 22.2% for the master, 19.4% for replica 1, and 19.3% for replica 2. The groove efficiency of the uncoated replica 3 was 24.3% at 142.5 Angstroms. We find that the replicas are reasonably faithful copies of the ion-etched master, and models based on measured atomic force microscope groove profiles are in general agreement with measured results. However, subtle issues remain regarding the widths of the peak order profile and the location of its maximum wavelength.

  7. Fiber Bragg Grating Sensors Based Monitoring System for Superconducting Accelerator Magnets

    E-Print Network [OSTI]

    Chiuchiolo, A; Perez, J C; Bajas, H; Consales, M; Giordano, M; Breglio, G; Cusano, A

    2014-01-01

    New generation of accelerator magnets for high energy applications currently designed, manufactured and tested at the European Organization for Nuclear Research (CERN) require the implementation of precise cryogenic sensors with long-term robustness and reliability able to withstand cryogenic temperature and to monitor the mechanical stresses affecting the winding during all the stages of his service life, assembly, cool down and powering. Monitoring the mechanical behavior of the magnet from assembly to operation is a critical task which aims to assure the integrity of the magnet and to safely handle the coils made of new brittle material. This contribution deals with the first successful embedding of Fiber Bragg Grating sensors in a subscale Nb3Sn dipole magnet in order to monitor the strain developed in the coil during the cool down to 1.9 K, the powering up to 15.8 kA and the warm up, offering new perspectives for the development of a complementary sensing technology based on fiber optic sensors.

  8. Strangeness Production at SIS measured with HADES

    E-Print Network [OSTI]

    J. Pietraszko; L. Fabbietti

    2009-11-03

    n this paper we review the recent results on strangeness production measured by HADES in the Ar+KCl system at a beam energy of 1.756 AGeV. A detailed comparison of the measured hadron yields with the statistical model is also discussed.

  9. In-line Mach-Zehnder interferometer composed of microtaper and long-period grating in all-solid photonic bandgap fiber

    SciTech Connect (OSTI)

    Wu Zhifang; Liu Yange; Wang Zhi; Han Tingting; Li Shuo; Jiang Meng; Ping Shum, Perry

    2012-10-01

    We report a compact in-line Mach-Zehnder interferometer combining a microtaper with a long-period grating (LPG) in a section of all-solid photonic bandgap fiber. Theoretical and experimental investigations reveal that the interferometer works from the interference between the fundamental core mode and the LP{sub 01} cladding supermodes. The mechanism underlying the mode coupling caused by the microtaper can be attributed to a bandgap-shifting as the fiber diameter is abruptly scaled down. In addition, the interferometer designed to strengthen the coupling ratio of the long-period grating has a promising practical application in the simultaneous measurement of curvature and temperature.

  10. Investigation of the signature of lung tissue in X-ray grating-based phase-contrast imaging

    E-Print Network [OSTI]

    Weber, Thomas; Haas, Wilhelm; Pelzer, Georg; Rieger, Jens; Ritter, Andr; Wucherer, Lukas; Braun, Jan Matthias; Durst, Jrgen; Michel, Thilo; Anton, Gisela

    2012-01-01

    Purpose: Grating-based X-ray phase-contrast imaging is a promising modality increasing the soft tissue contrast in medical imaging. In this work, the signature of lung tissue in X-ray grating-based physe-contrast imaging is investigated. Methods: We used a Talbot-Lau interferometer for our investigations of two C57BL/6 mice. Both underwent projection imaging and computed tomography. Results: The results show that the three images obtained by X-ray phase-contrast imaging show complementary anatomical structures. Especially the dark field image allows a more-exact determination of the position of the lung in the chest cavity. Conclusion: Due to its sensitivity to granular structures, the dark field image may be used for the diagnosis of lung diseases in earlier stages or without a CT scan. Furthermore, X-ray phase-contrast imaging may also have great potential in the application of animal laboratory sciences to reduce the number of required animals used in long-term translational, toxicity, and regenerative med...

  11. Fourier Analysis In addition to their inestimable importance in mathematics and its applications,

    E-Print Network [OSTI]

    Olver, Peter

    Chapter 13 Fourier Analysis In addition to their inestimable importance in mathematics and its applications, Fourier series also serve as the entry point into the wonderful world of Fourier analy- sis the theory and enlarging the scope of applications of Fourierinspired methods. New directions in Fourier

  12. tive emissions from EVs (e.g., power plant NOx) and GPVs (tailpipe and

    E-Print Network [OSTI]

    Denver, University of

    tive emissions from EVs (e.g., power plant NOx) and GPVs (tailpipe and associated NO.,. emissions) and found them comparable. Stricter controls on power plants were as- sumed than are currently in place Analy- sis article on battery-powered vehicles (Sept. 1996, p. 402A) serves as a useful reminder

  13. Int J Leg Med (2006) 120: 1823 DOI 10.1007/s00414-005-0024-3

    E-Print Network [OSTI]

    2006-01-01

    unambiguously detected and quantified. The variation in allele proportion estimates was essentially the same in a previous study by sequencing analy- sis. In heteroplasmic samples, minor allele proportions down to 9% were. Keywords Heteroplasmy . Allele proportion assessment . TaqMan assay . Forensic science Introduction

  14. Specification and Analysis of the AER/NCA Active Network Protocol Suite in

    E-Print Network [OSTI]

    ?lveczky, Peter Csaba

    Specification and Analysis of the AER/NCA Active Network Protocol Suite to the specification and analy- sis of the AER/NCA suite of active network multicast protocol compo- nents, AER/NCA poses challenging new problems for its formal specification and analysis. Real-Time Maude

  15. Specification and Analysis of the AER/NCA Active Network Protocol Suite in

    E-Print Network [OSTI]

    ?lveczky, Peter Csaba

    Specification and Analysis of the AER/NCA Active Network Protocol Suite in Real­Time Maude Peter and the Maude formal methodology to the specification and analy­ sis of the AER/NCA suite of active network and the composability of its components, AER/NCA poses challenging new problems for its formal specification

  16. www.wiley-vch.de SundmacherKienlePesch

    E-Print Network [OSTI]

    Dettweiler, Michael

    Fuel Cells (MCFC). It covers different aspects of cell operation, analy- sis, optimization and control1 www.wiley-vch.de SundmacherKienlePesch BerndtHuppmann(Eds.) MoltenCarbonateFuelCells This is the first book being purely focused on one of the most important fuel cell technolo- gies, Molten Carbonate

  17. Conclusions This study characterized sediments from

    E-Print Network [OSTI]

    , potential to cause toxicity to amphipods, grain-size, total organic carbon, and addi- tional emerging.P. 2006. "Pyrethroids: A Growing Concern in the Water- shed" Presentation at the Regional Monitoring Memorandum: Analy- sis of Bay Area Urban Creeks Monitoring, 2004-05." Prepared for: Clean Estuary Partnership

  18. CarnegieMellonengineeringnews MissionTechToday

    E-Print Network [OSTI]

    McGaughey, Alan

    's easily accessible oil already has been drilled, "we don't have many decades of abundant and cheap oil in cost analy- sis, so that pricing and total life-cycle costs can be considered. (Others at Carnegie to arrive at win-win solutions: green and cost- effective as well. But among most engineers, "the awareness

  19. p-ADIC ARAKELOV THEORY AMNON BESSER

    E-Print Network [OSTI]

    of Colmez* * on p-adic Green functions. We introduce the p-adic version of a metrized l* *ine analy- sis" [CdS88 , Col98, Bes02a] on the completions above p. This "local" part of t* *he theory. The goal of the local theory is to describe an exten* *sion of this pairing, by giving a Green function G

  20. Accurate R Peak Detection and Advanced Preprocessing of Normal ECG for Heart Rate Variability Analysis

    E-Print Network [OSTI]

    , The Netherlands Abstract Heart rate variability (HRV) analysis is well-known to give information about and allows a reliable HRV analy- sis. 1. Introduction Heart rate variability (HRV) analysis is well minimum and allows a reliable HRV analysis. 2. Methods 2.1. Data acquisition The data for this study

  1. Verification of Hybrid Systems Based on CounterexampleGuided Abstraction Refinement ?

    E-Print Network [OSTI]

    Theobald, Michael

    verification, abstraction transforms the inherently infinite state system into a finite­state model [7, 8Verification of Hybrid Systems Based on Counterexample­Guided Abstraction Refinement ? Edmund that eliminates a counterexample generated by the model checker. For hybrid systems, analy­ sis

  2. 423A HIGH-PERFORMANCE COMPUTING/NUMERICAL The International Journal of High Performance Computing Applications,

    E-Print Network [OSTI]

    Higham, Nicholas J.

    423A HIGH-PERFORMANCE COMPUTING/NUMERICAL The International Journal of High Performance Computing and barriers in the development of high-performance computing (HPC) algorithms and software. The activity has computing, numerical analy- sis, roadmap, applications and algorithms, software 1 The High-performance

  3. A Conceptual Framework for Semantic Case-based Safety Analysis Olawande Daramola, Tor Stlhane

    E-Print Network [OSTI]

    .biffl}@tuwien.ac.at Abstract Hazard and Operability (HAZOP) Analysis and Fail- ure Mode and Effect Analysis (FMEA) are among-based framework for safety analy- sis, which facilitates the reuse of previous HAZOP and FMEA experiences in order application. Key words: Safety analysis, HAZOP, FMEA, ontology, requirements, case-based reasoning, natural

  4. On Contraction Analysis for Nonlinear Systems

    E-Print Network [OSTI]

    Slotine, Jean-Jacques E.

    methods in- spired from fluid mechanics and differential geometry. Based on a differential analy- sis by controller and observer designs for simple physical examples. Key words: nonlinear dynamics, nonlinear; Nijmeyer and Van der Schaft, 1990). In this paper, a body of new results is derived using elementary tools

  5. Parallel flow in HeleShaw cells with ferrofluids Jos'e A. Miranda

    E-Print Network [OSTI]

    Widom, Michael

    capillary number limit. For finite capillary number and wavelength, linear stability analy sis indicates is a ferrofluid [6], and an external magnetic field is applied [7--10]. Ferrofluids, which are colloidal suspensions 2 #12; of microscopic permanent magnets, respond paramagnetically to applied fields. As a result

  6. EE 141: Electromagnetic Field Theory Fall Semester 2014

    E-Print Network [OSTI]

    Oughstun, Kurt

    @cems.uvm.edu Catalog Description: Fundamentals of electromagnetic field theory; vector analy- sis; electricEE 141: Electromagnetic Field Theory Fall Semester 2014 MWF 4:05­4:55 PM (Votey 207) & F 1 and magnetic fields, potential theory, boundary conditions and boundary value problems, Maxwell-Lorentz theory

  7. A N N U A L R E P O R T 2 0 1 4 E N G I N E E R I N G AT I L L I N O I S

    E-Print Network [OSTI]

    Gao, Grace Xingxin

    -to-end security analy- sis of systems ranging from the power grid to the Internet. The grant comes on the heels the security and resiliency of grid operation. Illinois researchers include Tim Yardley, Rakesh Bobba-3 SoS Lablet Solar Array $10M Frontier Award to Enhance Cybersecurity NP-View Launches ADVISE Security

  8. DARNS:A Randomized Multi-modulo RNS Architecture for Double-and-Add in ECC to prevent

    E-Print Network [OSTI]

    Sousa, Leonel

    DARNS:A Randomized Multi-modulo RNS Architecture for Double-and-Add in ECC to prevent Power-modulo Residue Number Systems (RNS) archi- tectures to obfuscate the secure information. Random selection to prevent power analy- sis, while still providing all the benefits of RNS. In this paper, we show

  9. The Dependency Pair Framework: Combining Techniques for Automated Termination Proofs #

    E-Print Network [OSTI]

    Ábrahám, Erika

    The Dependency Pair Framework: Combining Techniques for Automated Termination Proofs # J of the most powerful techniques for automated termination proofs of term rewrite systems. Up to now of new methods for termination analy­ sis. To demonstrate this, we present several new techniques within

  10. AUTOMATIC DETECTION OF WATER AND MAFICS IN M3 RADIANCE IMAGES. D. R. Thompson1,2

    E-Print Network [OSTI]

    AUTOMATIC DETECTION OF WATER AND MAFICS IN M3 RADIANCE IMAGES. D. R. Thompson1,2 , M. Gilmore,3 L. Introduction: We describe the detection of water (OH/H2O) and mafic mineralogy absorption features in Ryder catalog [1]. We employ superpixel endmember analy- sis [2] to detect spectral outliers. Our approach oper

  11. A Static Analysis of Value Passing CCS with Application to Workflows

    E-Print Network [OSTI]

    identified need for formal foundations as well as techniques and tools for analysing their quantitative and qualitative properties. We will look into expressing of workflows in process calculi and design analy- sis the control structure of concurrent systems models in CCS. In this thesis we will take a monotone framework

  12. Atmospheric Environment 34 (2000) 595}601 Determination of domain for diagnostic wind "eld

    E-Print Network [OSTI]

    Dabdub, Donald

    2000-01-01

    of generating gridded wind "eld data for input into air quality models (Seinfeld, 1988; Solomon, 1995). There are two approaches generally followed to generate the wind "elds: prognostic and diagnostic approaches. Diagnostic analy- sis employs measured data to generate the gridded wind "eld. It generally requires less

  13. 738 IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 27, NO. 4, APRIL 2008 Power Grid Analysis and Optimization

    E-Print Network [OSTI]

    Hu, Jiang

    , APRIL 2008 Power Grid Analysis and Optimization Using Algebraic Multigrid Cheng Zhuo, Student Member of power grid analy- sis and optimization techniques, all of which are based on the algebraic of reducing the problem size for power grid analysis and optimization. Next, with the proposed reduction

  14. TRANSPLANTATION Host factors that impact the biodistribution and persistence of multipotent

    E-Print Network [OSTI]

    Kay, Mark A.

    of bioluminescence and DsRed2 for immunohistochemical analy- sis. C57BL/6 MAPCs were infused intrave- nously into C57 to immune rejection of the infused cells. Because undifferentiated MAPCs express low levels of major-cell resistance may serve as a barrier to the infusion of undifferentiated MAPCs in vivo. As a part of innate

  15. What is microfluidics? It is the science and technology of systems that process or manipulate small (109

    E-Print Network [OSTI]

    Prentiss, Mara

    What is microfluidics? It is the science and technology of systems that process or manipulate small of micrometres. The first applications of microfluidic technologies have been in analy- sis, for which they offer for analysis; and small footprints for the analytical devices1 . Microfluidics exploits both its most obvious

  16. Rotational energy analysis for rotatingvibrating linear molecules in classical trajectory simulation

    E-Print Network [OSTI]

    Kim, Myung Soo

    investigation,26 the mode-specific analy- sis of product energy in classical trajectory simulation, the aboveRotational energy analysis for rotatingvibrating linear molecules in classical trajectory simulation Sang Tae Park, Jeong Hee Moon, and Myung Soo Kima) Department of Chemistry and Center

  17. T-TV-T^ sr^i Ris-R-597(EN) A ComputerProgram forReliability

    E-Print Network [OSTI]

    T-TV-T^ sr^i Ris-R-597(EN) SIMON A ComputerProgram forReliability and Statistical Analysis using and Statistical Analysis using Monte Carlo Simulation Program Description and Manual Hans ErikKngs and Kmt for calculation of reliability and statistical analy- sis. The program is of the Monte Carlo type

  18. Validation of a Model and a Simulator for Road Cycling on Real Tracks Thorsten Dahmen Roman Byshko Dietmar Saupe Martin Roder Stephan

    E-Print Network [OSTI]

    Deussen, Oliver

    from the law of conservation of energy. The state-of-the art mathematical model for road cycling powerValidation of a Model and a Simulator for Road Cycling on Real Tracks Thorsten Dahmen Roman acquisition, analy- sis, modelling, and simulation of performance parameters in road cycling on real tracks

  19. S e i s m i c i n v e r s i o n f o r r e s e r v o i r p r o p e r t i e s 588 The Leading Edge May 2012

    E-Print Network [OSTI]

    Tsvankin, Ilya

    study with crosshole data generated by perforation shots in a horizontal borehole and recorded of the attenuation coefficient between perforation stages. Analy- sis of the shear-wave attenuation coefficient by perforation shots fired at regular intervals in a horizon- tal borehole. The wavefield was recorded by 10

  20. April 1, 2002 / Vol. 27, No. 7 / OPTICS LETTERS 485 Light trapping in a fiber grating defect by four-wave mixing

    E-Print Network [OSTI]

    Sipe,J. E.

    the structures have a slow frequency response. Our approach is somewhat reminiscent of that of Winful and Perlin9 light in a defect state in a nonuniform fiber grating. The amount of energy deposited is estimated and the optical push broom.5 Here we propose another such demonstra- tion, namely, the storage of light

  1. October 1, 2003 / Vol. 28, No. 19 / OPTICS LETTERS 1823 Tuning of laser pulse shapes in grating-based compressors for

    E-Print Network [OSTI]

    Geddes, Cameron Guy Robinson

    October 1, 2003 / Vol. 28, No. 19 / OPTICS LETTERS 1823 Tuning of laser pulse shapes in grating, C. B. Schroeder, E. Esarey, and W. P. Leemans Lasers Optics and Accelerator Systems Integrated to optimize a laser-plasma electron accelerator. 2003 Optical Society of America OCIS codes: 320.5520, 320

  2. Proximity field nanopatterning (PnP) employs a 2D grating to create a 3D optical interferogram within an underlying photore-

    E-Print Network [OSTI]

    Rogers, John A.

    Proximity field nanopatterning (PnP) employs a 2D grating to create a 3D optical interferogram by images of 3D polymeric, semiconducting and ceramic structures fabricated by PnP. Paul Braun and co and three dimen- sions provides opportunities for far more exotic optical properties including 3D photonic

  3. Polarimetry of thin metal transmission gratings in the resonance region and its impact on the response of metal-semiconductor-metal

    E-Print Network [OSTI]

    Polarimetry of thin metal transmission gratings in the resonance region and its impact on the response of metal-semiconductor-metal photodetectors Erli Chena) and Stephen Y. Chou Department Received 17 December 1996; accepted for publication 4 March 1997 The resonance behavior of metal

  4. 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 1wileyonlinelibrary.com with microsized grating disk-structure and

    E-Print Network [OSTI]

    Wang, Zhong L.

    was built for the rotary freestanding TENG with a grating struc- ture. The fundamental physics of RF- TENG parameters and rotation rate on the output power and optimum resistance. 2. Conductor-to-Dielectric Rotary Freestanding TENG A rotary freestanding TENG consisting of a stator and a rotator can have many types due

  5. Reproducible strain measurement in electronic devices by applying integer multiple to scanning grating in scanning moir fringe imaging

    SciTech Connect (OSTI)

    Kim, Suhyun, E-mail: u98kim@surface.phys.titech.ac.jp; Jung, Younheum; Kim, Joong Jung; Lee, Sunyoung; Lee, Haebum [Memory Analysis Science and Engineering Group, Samsung Electronics, San #16 Hwasung-city, Gyeonggi-Do 445-701 (Korea, Republic of); Kondo, Yukihito [EM Business Unit, JEOL Ltd., 3-1-2 Musashino, Akishima, Tokyo 196-8558 (Japan)

    2014-10-15

    Scanning moir fringe (SMF) imaging by high-angle annular dark field scanning transmission electron microscopy was used to measure the strain field in the channel of a transistor with a CoSi{sub 2} source and drain. Nanometer-scale SMFs were formed with a scanning grating size of d{sub s} at integer multiples of the Si crystal lattice spacing d{sub l} (d{sub s} ? nd{sub l}, n = 2, 3, 4, 5). The moir fringe formula was modified to establish a method for quantifying strain measurement. We showed that strain fields in a transistor measured by SMF images were reproducible with an accuracy of 0.02%.

  6. Translational-symmetry alternating phase shifting mask grating mark used in a linear measurement model of lithographic projection lens aberrations

    SciTech Connect (OSTI)

    Qiu Zicheng; Wang Xiangzhao; Bi Qunyu; Yuan Qiongyan; Peng Bo; Duan Lifeng

    2009-07-01

    A linear measurement model of lithographic projection lens aberrations is studied numerically based on the Hopkins theory of partially-coherent imaging and positive resist optical lithography (PROLITH) simulation. In this linearity model, the correlation between the mark's structure and its sensitivities to aberrations is analyzed. A method to design a mark with high sensitivity is proved and declared. By use of this method, a translational-symmetry alternating phase shifting mask (Alt-PSM) grating mark is redesigned with all of the even orders, {+-}3rd and {+-}5th order diffraction light missing. In the evaluation simulation, the measurement accuracies of aberrations prove to be enhanced apparently by use of the redesigned mark instead of the old ones.

  7. Ultrasonic generator and detector using an optical mask having a grating for launching a plurality of spatially distributed, time varying strain pulses in a sample

    DOE Patents [OSTI]

    Maris, Humphrey J. (Barrington, RI)

    2002-01-01

    A method and a system are disclosed for determining at least one characteristic of a sample that contains a substrate and at least one film disposed on or over a surface of the substrate. The method includes a first step of placing a mask over a free surface of the at least one film, where the mask has a top surface and a bottom surface that is placed adjacent to the free surface of the film. The bottom surface of the mask has formed therein or thereon a plurality of features for forming at least one grating. A next step directs optical pump pulses through the mask to the free surface of the film, where individual ones of the pump pulses are followed by at least one optical probe pulse. The pump pulses are spatially distributed by the grating for launching a plurality of spatially distributed, time varying strain pulses within the film, which cause a detectable change in optical constants of the film. A next step detects a reflected or a transmitted portion of the probe pulses, which are also spatially distributed by the grating. A next step measures a change in at least one characteristic of at least one of reflected or transmitted probe pulses due to the change in optical constants, and a further step determines the at least one characteristic of the sample from the measured change in the at least one characteristic of the probe pulses. An optical mask is also disclosed herein, and forms a part of these teachings.

  8. Ultrasonic generator and detector using an optical mask having a grating for launching a plurality of spatially distributed, time varying strain pulses in a sample

    DOE Patents [OSTI]

    Maris, Humphrey J. (Barrington, RI)

    2003-01-01

    A method and a system are disclosed for determining at least one characteristic of a sample that contains a substrate and at least one film disposed on or over a surface of the substrate. The method includes a first step of placing a mask over a free surface of the at least one film, where the mask has a top surface and a bottom surface that is placed adjacent to the free surface of the film. The bottom surface of the mask has formed therein or thereon a plurality of features for forming at least one grating. A next step directs optical pump pulses through the mask to the free surface of the film, where individual ones of the pump pulses are followed by at least one optical probe pulse. The pump pulses are spatially distributed by the grating for launching a plurality of spatially distributed, time varying strain pulses within the film, which cause a detectable change in optical constants of the film. A next step detects a reflected or a transmitted portion of the probe pulses, which are also spatially distributed by the grating. A next step measures a change in at least one characteristic of at least one of reflected or transmitted probe pulses due to the change in optical constants, and a further step determines the at least one characteristic of the sample from the measured change in the at least one characteristic of the probe pulses. An optical mask is also disclosed herein, and forms a part of these teachings.

  9. Fabrication and testing of diamond-machined gratings in ZnSe, GaP, and bismuth germanate for the near infrared and visible

    SciTech Connect (OSTI)

    Kuzmenko, P J; Little, S L; Ikeda, Y; Kobayashi, N

    2008-06-22

    High quality immersion gratings for infrared applications have been demonstrated in silicon and germanium. To extend this technology to shorter wavelengths other materials must be investigated. We selected three materials, zinc selenide, gallium phosphide and bismuth germanate (Bi{sub 4}Ge{sub 3}O{sub 12}), based on high refractive index, good visible transmission and commercial availability in useful sizes. Crystal samples were diamond turned on an ultra-precision lathe to identify preferred cutting directions. Using this information we diamond-flycut test gratings over a range of feed rates to determine the optimal cutting conditions. For both ZnSe and GaP good surface quality was achieved at feed rates up to 1.0 cm/minute using a special compound angle diamond tool with negative rake angles on both cutting surfaces. The surface roughness of the groove facets was about 4 nm. A Zygo interferometer measured grating wavefront errors in reflection. For the ZnSe the RMS error was < {lambda}/20 at 633nm. More extensive testing was performed with a HeNe laser source and a cooled CCD camera. These measurements demonstrated high relative diffraction efficiency (> 80%), low random groove error (2.0 nm rms), and Rowland ghost intensities at < 0.1%. Preliminary tests on bismuth germanate show high tool wear.

  10. Coherent pulse interrogation system for fiber Bragg grating sensing of strain and pressure in dynamic extremes of materials

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Rodriguez, George; Jaime, Marcelo; Balakirev, Fedor; Mielke, Chuck H.; Azad, Abul; Marshall, Bruce; La Lone, Brandon M.; Henson, Bryan; Smilowitz, Laura

    2015-05-21

    A 100 MHz fiber Bragg grating (FBG) interrogation system is described and applied to strain and pressure sensing. The approach relies on coherent pulse illumination of the FBG sensor with a broadband short pulse from a femtosecond modelocked erbium fiber laser. After interrogation of the FBG sensor, a long multi-kilometer run of single mode fiber is used for chromatic dispersion to temporally stretch the spectral components of the reflected pulse from the FBG sensor. Dynamic strain or pressure induced spectral shifts in the FBG sensor are detected as a pulsed time domain waveform shift after encoding by the chromatic dispersivemoreline. Signals are recorded using a single 35 GHz photodetector and a 50 G Samples per second, 25 GHz bandwidth, digitizing oscilloscope. Application of this approach to high-speed strain sensing in magnetic materials in pulsed magnetic fields to ~150 T is demonstrated. The FBG wavelength shifts are used to study magnetic field driven magnetostriction effects in LaCoO?. A sub-microsecond temporal shift in the FBG sensor wavelength attached to the sample under first order phase change appears as a fractional length change (strain: ?L/Lless

  11. Commissioning of a Soft X-ray Beamline PF-BL-16A with a Variable-Included-Angle Varied-Line-Spacing Grating Monochromator

    SciTech Connect (OSTI)

    Amemiya, Kenta; Toyoshima, Akio; Kikuchi, Takashi; Kosuge, Takashi; Nigorikawa, Kazuyuki; Sumii, Ryohei; Ito, Kenji

    2010-06-23

    The design and commissioning of a new soft X-ray beamline, BL-16A, at the Photon Factory is presented. The beamline consists of a pre-focusing mirror, an entrance slit, a variable-included-angle varied-line-spacing plane grating monochromator, and a post-focusing system as usual, and provides circularly and linearly polarized soft X rays in the energy range 200-1500 eV with an APPLE-II type undulator. The commissioning procedure for the beamline optics is described in detail, especially the check of the focal position for the zero-th order and diffracted X rays.

  12. Conductivity as applied to water analysis

    E-Print Network [OSTI]

    Godfrey, Truman M.

    1913-05-15

    , precision and simplicity. The hardness may be due either to carbonate of lime or csrbonate of magnesia, or both; and if it is neces sary to discriminate, a chemical analy sis must be made once for all. After that, periodic tests of conductivity..., the quant ity required may be ascertained by add ing lime in different proportions to the water and testing the conductivit ies. If the results are plotted as a curve connecting proportion of lime with conductivity, it will be found...

  13. Statistical and risk analysis for the measured and predicted axial response of 100 piles

    E-Print Network [OSTI]

    Perdomo, Dario

    1986-01-01

    . , Universidad de los Andes Chairman of Advisory Committee: Dr. Jean-Louis Briaud A statistical analysis of the ultimate load and load-settlement results obtained by Briaud et al(1985) was performed . A risk analy- sis method was also developed to study... the importance of properly selecting safety factors. The data base of 100 piles was statistical- ly analyzed under five different soil categories, and several predic- tion methods were used to study the performance of the risk analysis method. In general...

  14. p-ADIC ARAKELOV THEORY AMNON BESSER

    E-Print Network [OSTI]

    integration and is related to work of Colmez on p-adic Green functions. We introduce the p-adic version by a pairing at p involving \\Coleman analy- sis" [CdS88, Col98, Bes02a] on the completions above p. This \\local the intersection index hD; Ei for two divisors D and E, of degree 0, on a complete curve over a p-adic #12;eld

  15. Grating spectrometer system for beam emission spectroscopy diagnostics using high-energy negative-ion-based neutral beam injection on LHD

    SciTech Connect (OSTI)

    Kado, S. [School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan); Oishi, T. [Graduate School/School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan); Yoshinuma, M.; Ida, K. [National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292 (Japan)

    2010-10-15

    A beam emission spectroscopy (BES) system was developed for density gradient and fluctuation diagnostics in the Large Helical Device (LHD). In order to cover the large Doppler shift of the H{alpha} beam emission because of the high-energy negative-ion-based neutral beam atom (acceleration voltage V{sub acc}=90-170 kV) and the large motional Stark splitting due to the large vxB field (magnetic field B=3.0 T), a grating spectrometer was used instead of a conventional interference filter system. The reciprocal linear dispersion is about 2 nm/mm, which is sufficient to cover the motional Stark effect spectra using an optical fiber with a diameter of 1 mm.

  16. SIS a new SFF method based on powder

    E-Print Network [OSTI]

    Asiabanpour, Bahram - Department of Engineering and Technology, Texas State University

    . This approach, used by SLS and 3D printing, is able to create thin and uniformly dense powder layers. Other

  17. Title: Canadian Soil Information System (CanSIS) Data Creator /

    E-Print Network [OSTI]

    , Northwest Territories, Nova Scotia, Nunavut, Ontario, Prince Edward Island, Quebec, Saskatchewan, Yukon

  18. Circadian Solar formerly AdvanceSis | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar Energy LLCLtd Jump to:ChangingCNEInformation ChungCircadian Solar

  19. Examen cri?tico-anali?tico de las ilustraciones encontradas en tres Celestinas: (Burgos, 1499; Sevilla, 1502; Valencia, 1514)

    E-Print Network [OSTI]

    Reyes-Dura?n, Marti?n

    1992-01-01

    terminacion exitosa de esta empresa. Agradezco tambien el interes que demostro por mi trabajo desde un principio. Usted creyo en mi talento y me ayudo a comprender que todas las metas son accesibles si uno se lo propone y se esfuerza. Al Dr. Kenneth Graft... romanas, y para este estudio de la Edad Media la imprenta de palabras e ilustra- ciones que tuvo sus impulsos en Europa. Durante el siglo VI, la empresa de manuscritos habia caido en un desfavorable circulo vicioso ya que la ignoran- cia era aceptada...

  20. Mo-98(p,d)mo-97 Reaction and Core Coupling in Mo-97 and Nb-97

    E-Print Network [OSTI]

    Bindal, P. K.; Youngblood, David H.; Kozub, R. L.; Hoffmannpinther, P. H.

    1975-01-01

    . Hoffmann-Pinther Physics Department, Ohio University, Athens, Ohio 45701 Q,eceived 14 April 1975). The Mo(P, d)9 Mo reaction has been used at a bombarding energy of 38.6 MeV to popu- late neutron hole states of S~Mo. Excitation energies and angular... distributions were mea- sured for levels up to 4.5 MeV in excitation. A distorted-wave-Born-approximation analy- sis was used to make l assignments and to obtain spectroscopic factors. Three distinct groups of weakly excited levels, one corresponding to l=4...

  1. Instrumental Variable Analysis with a Nonlinear ExposureOutcome Relationship

    E-Print Network [OSTI]

    Burgess, Stephen; Davies, Neil M.; Thompson, Simon G.

    2014-08-27

    this merely reflects reverse causation (sick people lose weight) or confounding (underweight individuals dif- fer in other risk factors from those of average weight) or whether there is a causal effect of low BMi on increased mortality.3 in a randomized... as the sample size increases. either stratum- specific or sliding window estimates can equally be estimated with a binary outcome by using a log-linear or logistic analy- sis model to estimate a relative risk or odds ratio parameter. a localized average causal...

  2. Warm absorbers in X-rays (WAX), a comprehensive high resolution grating spectral study of a sample of Seyfert galaxies: I. A global view and frequency of occurrence of warm absorbers

    E-Print Network [OSTI]

    Laha, Sibasish; Dewangan, Gulab C; Chakravorty, Susmita; Kembhavi, Ajit K

    2014-01-01

    We present results from a homogeneous analysis of the broadband 0.3-10 keV CCD resolution as well as of soft X-ray high-resolution grating spectra of a hard X-ray flux-limited sample of 26 Seyfert galaxies observed with XMM-Newton. Our goal is to characterise the warm absorber (WA) properties along the line-of-sight to the active nucleus. We significantly detect WAs in $65\\%$ of the sample sources. Our results are consistent with WAs being present in at least half of the Seyfert galaxies in the nearby Universe, in agreement with previous estimates . We find a gap in the distribution of the ionisation parameter in the range $0.5warm absorber flow is probably constituted by a clumpy distribution of discrete clouds rather than a continuous medium. The distribution of the WA column densities for the sources with broad Fe K$\\alpha$ lines are similar to those sources which do not have broadened emission l...

  3. Ann-Christin Rudolphi, Michele Casini Aqua reports 2012:13

    E-Print Network [OSTI]

    internationella bestndsanalyser innehller expeditionsrapporterna ingen formell analys och resultatdiskussion

  4. Expeditionsrapport BITS, november 2013

    E-Print Network [OSTI]

    internationella bestndsanalyser innehller expeditionsrapporterna ingen formell analys och resultatdiskussion

  5. Ann-Christin Rudolphi, Michele Casini Aqua reports 2013:11

    E-Print Network [OSTI]

    internationella bestndsanalyser innehller expeditionsrapporterna ingen formell analys och resultatdiskussion

  6. Dilepton production and off-shell transport dynamics at SIS energies

    E-Print Network [OSTI]

    E. L. Bratkovskaya; W. Cassing

    2008-04-15

    Dilepton production in nucleus-nucleus collisions at 1-2 A GeV as well as in elementary pp and pd reactions is studied within the microscopic HSD transport approach which includes the off-shell dynamics of vector mesons explicitly. The study addresses additionally the production of $\\pi^0$ and $\\eta$ mesons since their Dalitz decays provide a sizeable contribution to the dilepton invariant mass spectra up to about 0.5 GeV. Our transport results agree with the TAPS experimental data on $\\pi$ and $\\eta$ multiplicities in C+C collisions from 0.8 to 2 A GeV. We find that the 'DLS-puzzle' - which addresses an underestimation of the $e^+e^-$ yield in the mass range from 0.2 to 0.5 GeV in C+C and Ca+Ca collisions - may be solved when incorporating a stronger bremsstrahlung contribution in line with recent OBE calculations. Moreover, the HSD results with 'enhanced' bremsstrahlung cross sections agree very well with the HADES experimental data for the dilepton mass spectra for C+C at 1 and 2 A GeV, especially when including a collisional broadening in the vector-meson spectral functions. Detailed predictions for dilepton spectra from pp and pn/pd reactions at 1.25 GeV, 2.2 GeV and 3.5 GeV are presented which will allow to verify/falsify the larger bremsstrahlung contributions from the experimental side in the near future.

  7. Requests are subject to edit upon entering into SIS+ ACTIVITY LOG

    E-Print Network [OSTI]

    Farritor, Shane

    Energy Systems and Resources New Course -- -- -- -- 12/15/2007 ENG ENGR 411 Nuclear Reactor Theory New Course -- -- -- -- 12/15/2007 ENG ENGR 412 Nuclear Reactor Analysis New Course -- -- -- -- 12/15/2007 CBA/note/descript -- -- -- -- 12/15/2007 ENG ENGR 300 Principles of Nuclear Engineering New Course -- -- -- -- 12/15/2007 ENG ENGR

  8. Global behavior of a multi-group SIS epidemic model with age ...

    E-Print Network [OSTI]

    2005-10-22

    Dec 10, 2004 ... Security Agency (NSA) and Alfred P. Sloan Foundation. ... into the model may provide additional and important information which may be...

  9. Engineering applications of soil information system (sis): precision irrigation and drainage systems design

    E-Print Network [OSTI]

    Ceylan, Bilge Kagan

    2009-05-15

    irrigation water to maintain uniform soil water content across the field. An optimization-simulation model was developed for this purpose using a dynamic programming approach. The simulations run by the optimization model showed that the existing pivot speed...

  10. Lymphatic Filariasis, also known as elephantia-sis, affects more than 120 million people in 80

    E-Print Network [OSTI]

    Davis, Richard E.

    with poverty. It is found in both rural communities and urban slums, and is spread by mosquitoes which tend-tropicalclimates Ruralorurbanareaswhereinfectedmosquitoes tend to breed Poverty-strickenareas Children symptoms Initially, no symptoms may be present

  11. y participacidnciudadana,y presentarlos rnenores indicesde pobrezadelconrinenie,carecece un sis-

    E-Print Network [OSTI]

    Medelln, Rodrigo

    : Conservacin y desarrollo sustentable. Pp. 510-511 in Primack, R., R. Rozzi, P. Feinsinger, R. Dirzo, y F

  12. Validation of CReSIS Synthetic Aperture Radar Processor and Optimal Processing Parameters

    E-Print Network [OSTI]

    Smith, Logan

    2014-12-31

    Sounding the ice sheets of Greenland and Antarctica is a vital component in determining the effect of global warming on sea level rise. Of particular importance are measurements of the bedrock topography of the outlet ...

  13. Development of NDA instruments for the Los Alamos SIS (Special Isotope Separation) Facility

    SciTech Connect (OSTI)

    Li, T.K.; Rinard, P.M.; Schneider, C.M.; Atencio, J.D.; Hyman, D.H.; Kroncke, K.E.; Painter, J.; Siebelist, R.; Holbrooks, O.; Halbig, J.K.

    1989-01-01

    The Los Alamos Special Isotope Separation Facility produces special plutonium isotopes and converts plutonium scrap by using the molecular laser isotope separation (MLIS) process in a gaseous plutonium hexafluoride (PuF/sub 6/) phase. To provide important process-development and accountability information, we have developed and installed four nondestructive assay (NDA) instruments for that facility. These instruments are (1) an in-line plutonium isotopic analysis system to measure plutonium isotopes in gaseous, solid, and liquid phases, (2) an in-line sodium iodide (NaI) monitoring system consisting of six 2-in. by 2-in., two 2-in. by 24-in., and one 2-in. by 22-in. NaI detectors at specified components (a feed bottle, a feed-transfer cold trap, a compressor, a heat exchanger, a collector, a nozzle prefilter, and a tails cold trap) in the flow loop, (3) a portable high-resolution germanium gamma-ray system for plutonium isotopic analysis, and (4) a portable NaI gamma-ray holdup monitor. This paper discusses the measurement principles, hardware and software designs, and performance associated with these NDA instruments. 2 refs, 11 figs., 2 tabs.

  14. The arterial supply to the salivary glands of the cat

    E-Print Network [OSTI]

    Mia, Md. Afizuddin

    1968-01-01

    for his valuable and skillful technical assistance in illustrative work; to Doctors J. E. Martin, L. G. Garcia, M. E. Tatum, and G. R. Bratton for their sincere help and cooperation. Special thanks are extended to Mrs. Rachel Brown for her kind.... Milliff, Sidney O. Brown, Arden G. Kemler, and Raymond F. Sis for their individual guidance, invaluable assistance in planning, execution and written presentation of this thesis and related subjects. Grateful acknowledgment is made to Dr. R. G. Greeley...

  15. Multiorder rotating grating interferometer John Howard

    E-Print Network [OSTI]

    Howard, John

    in proportion to the integral of the electron density nealong the laser-beam line of sight.4 Interferometric the diffracted beams are Doppler shifted in proportion to their order number so that the spatial information the continuous time resolution whilestill allowingsimultaneous multichannel phase- shift information

  16. Acknowledgments: we are grateful to Dr Descazeaud,

    E-Print Network [OSTI]

    Boyer, Edmond

    de Pdiatrie, Hpital Andr Mignot, Le Chesnay; 5 Service de Pdiatrie, Centre Hospitalier is a cornerstone of the management of sickle cell disease but carries a high risk of hemolytic transfusion reaction of this syndrome, to discuss its pathophysiology, and to propose a management strategy. Design and Methods We

  17. Fiber Grating Moisture And Chemical Sensing System

    DOE Patents [OSTI]

    Schipani, Claudia (Turin, IT); Spano, Ennio (Turin, IT); Dalle Crode, Domenico (Turin, IT)

    2004-01-27

    A vane for a stator of a variable-geometry turbine, in particular for aeronautical engines, has an airfoil profile and a pair of hinge portions, which are carried by the airfoil profile and enable the airfoil profile to be coupled to a support structure of the stator so as to be rotatable about an axis of adjustment; the vane also has internal channels that allow a flow of air to pass through in order to cool the hinge portions.

  18. Material identification employing a grating spectrometer

    DOE Patents [OSTI]

    Gornushkin, Ignor B.; Winefordner, James D.; Smith, Benjamin W.

    2007-01-09

    Multi-ordered spectral data is obtained from various known substances and is stored in a spectral library. The identification of an unknown material is accomplished by correlating the sample's multi-ordered spectrum against all or a portion of the spectrum in the library, and finding the closest match.

  19. ENGR 3502 Open Source Humanoid Robots Instructor permission only you need to request permission in SIS and provide the information

    E-Print Network [OSTI]

    Huang, Wei

    , design and 3D- print a "body", figure out the Linux open-source C++ framework and make the robot do

  20. Reduced Perceptual Exclusivity during Object and Grating Rivalry in Autism

    E-Print Network [OSTI]

    Freyberg, J.; Robertson, C. E.; Baron-Cohen, S.

    2015-08-20

    Background: The dynamics of binocular rivalry may be a behavioural footprint of excitatory and inhibitory neural transmission in visual cortex. Given the presence of atypical visual features in Autism Spectrum Conditions (ASC), and evidence...

  1. Optimization of multiplexed holographic gratings for spectralspatial imaging filters

    E-Print Network [OSTI]

    Barton, Jennifer K.

    filters, since the material can be formed with mini- mal shrinkage and refractive index change after pro selectivity. The mixture is poured into a mold similar to that shown in Fig. 1, consisting of two glass plates

  2. Design, Fabrication and Measurement of Integrated Bragg Grating Optical Filters

    E-Print Network [OSTI]

    Murphy, Thomas E.

    by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Arthur C. Smith Chairman, Deparment Committee on Graduate Students #12;#12;Design, Fabrication. The goal of a Ph.D. program is not only to accomplish spe- cific research goals but also to train one professors, the role of academic adviser unfortunately entails little more than signing forms and reminding

  3. Fundamental limits to slow-light arrayed-waveguide-grating

    E-Print Network [OSTI]

    Boyd, Robert W.

    7793 #12;15. S. A. Schulz, L. O'Faolain, D. M. Beggs, T. P. White, A. Melloni, and T. F. Krauss'Faolain, S. A. Schulz, D. M. Beggs, T. P. White, M. Spasenovic, L. Kuipers, F. Morichetti, A. Melloni, S

  4. Fabrications of PVDF gratings :final report for LDRD project 79884.

    SciTech Connect (OSTI)

    Rogers, J. A. (University of Illinois, Urbana-Champaign); Carr, Dustin Wade; Bogart, Gregory R.

    2005-12-01

    The purpose of this project was to do some preliminary studies and process development on electroactive polymers to be used for tunable optical elements and MEMS actuators. Working in collaboration between Sandia National Labs and The University of Illinois Urbana-Champaign, we have successfully developed a process for applying thin films of poly (vinylidene fluoride) (PVDF) onto glass substrates and patterning these using a novel stamping technique. We observed actuation in these structures in static and dynamic measurements. Further work is needed to characterize the impact that this approach could have on the field of tunable optical devices for sensing and communication.

  5. Town Known for First Thanksgiving Grateful for Energy Savings...

    Energy Savers [EERE]

    of the upgrades, which so far have saved nearly 1,200 per month. The South Street Public Library also had work done. The town energy audit determined the library used...

  6. A theoretical study of grating structured triboelectric nanogenerators

    E-Print Network [OSTI]

    Wang, Zhong L.

    nanogenerator (TENG) technology is an emerging new mechanical energy harvesting technology with numerous) are devices that can effectively convert ambient mechanical energy into electricity. The basic working, but is typically neglected and wasted. Traditional mechanical energy harvesting technology has harnessed

  7. ALS Scientists Patent Technique To Dramatically Advance Grating-Based

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach HomeA Better Anode Design to Improve4AJ01) (See Energy Level79AJ01)19^ U N I TALSALSSpectroscopy ALS

  8. ALS Scientists Patent Technique To Dramatically Advance Grating-Based

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.TheoryTuesday, August 10, 20102016 News BelowAskedAIKENALSDoctoralALSALS

  9. Patent: Ultrafast transient grating radiation to optical image converter |

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding access toSmall Reactor for DeepK.alpha.stirling

  10. Expeditionsrapport BITS, februari 2014

    E-Print Network [OSTI]

    innehller expeditionsrapporterna ingen formell analys och resultatdiskussion utan r mer av beskrivande

  11. Ann-Christin Rudolphi, Michele Casini Aqua reports 2013:9

    E-Print Network [OSTI]

    innehller expeditionsrapporterna ingen formell analys och resultatdiskussion utan r mer av beskrivande

  12. Ann-Christin Rudolphi, Michele Casini Aqua reports 2012:14

    E-Print Network [OSTI]

    innehller expeditionsrapporterna ingen formell analys och resultatdiskussion utan r mer av beskrivande

  13. AS&E Registering for Classes Use this registration guide to navigate your iSIS student Homepage, search the Schedule of Classes, manage your

    E-Print Network [OSTI]

    Dennett, Daniel

    for Classes page opens and the search defaults to your Class Career. b. Enter search criteria such as Course or World Civ), etc. are available. d. Enter appropriate search criteria and click Search. The Search Homepage, search the Schedule of Classes, manage your Shopping Cart, Add, Swap, Edit, and Drop Classes

  14. Complete genome sequence of the thermophilic, hydrogen-oxidizing Bacillus tusciae type strain (T2T) and reclassification in the new genus, Kyrpidia gen. nov. as Kyrpidia tusciae comb. nov. and emendation of the family Alicyclobacillaceae da Costa and Rainey, 2010

    SciTech Connect (OSTI)

    Klenk, Hans-Peter [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Lapidus, Alla L. [U.S. Department of Energy, Joint Genome Institute; Chertkov, Olga [Los Alamos National Laboratory (LANL); Copeland, A [U.S. Department of Energy, Joint Genome Institute; Glavina Del Rio, Tijana [U.S. Department of Energy, Joint Genome Institute; Nolan, Matt [U.S. Department of Energy, Joint Genome Institute; Lucas, Susan [U.S. Department of Energy, Joint Genome Institute; Chen, Feng [U.S. Department of Energy, Joint Genome Institute; Tice, Hope [U.S. Department of Energy, Joint Genome Institute; Cheng, Jan-Fang [U.S. Department of Energy, Joint Genome Institute; Han, Cliff [Los Alamos National Laboratory (LANL); Bruce, David [Los Alamos National Laboratory (LANL); Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Pati, Amrita [U.S. Department of Energy, Joint Genome Institute; Ivanova, N [U.S. Department of Energy, Joint Genome Institute; Mavromatis, K [U.S. Department of Energy, Joint Genome Institute; Daum, Chris [U.S. Department of Energy, Joint Genome Institute; Chen, Amy [U.S. Department of Energy, Joint Genome Institute; Palaniappan, Krishna [U.S. Department of Energy, Joint Genome Institute; Chang, Yun-Juan [ORNL; Land, Miriam L [ORNL; Hauser, Loren John [ORNL; Jeffries, Cynthia [Oak Ridge National Laboratory (ORNL); Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Rohde, Manfred [HZI - Helmholtz Centre for Infection Research, Braunschweig, Germany; Abt, Birte [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Pukall, Rudiger [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Goker, Markus [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Bristow, James [U.S. Department of Energy, Joint Genome Institute; Markowitz, Victor [U.S. Department of Energy, Joint Genome Institute; Hugenholtz, Philip [U.S. Department of Energy, Joint Genome Institute; Eisen, Jonathan [U.S. Department of Energy, Joint Genome Institute

    2011-01-01

    Bacillus tusciae Bonjour & Aragno 1994 is a hydrogen-oxidizing, thermoacidophilic spore former that lives as a facultative chemolithoautotroph in solfataras. Although 16S rRNA gene sequencing was well established at the time of the initial description of the organism, 16S se- quence data were not available and the strain was placed into the genus Bacillus based on limited chemotaxonomic information. Despite the now obvious misplacement of strain T2T as a member of the genus Bacillus in 16S rRNA-based phylogenetic trees, the misclassification remained uncorrected for many years, which was likely due to the extremely difficult, analy- sis-hampering cultivation conditions and poor growth rate of the strain. Here we provide a taxonomic re-evaluation of strain T2T (= DSM 2912 = NBRC 15312) and propose its reclassi- fication as the type strain of a new species, Kyrpidia tusciae, and the type species of the new genus Kyrpidia, which is a sister-group of Alicyclobacillus. The family Alicyclobacillaceae da Costa and Rainey, 2010 is emended. The 3,384,766 bp genome with its 3,323 protein-coding and 78 RNA genes is part of the Genomic Encyclopedia of Bacteria and Archaea project.

  15. Fragmentation Considered Poisonous

    E-Print Network [OSTI]

    Herzberg, Amir

    2012-01-01

    We present practical poisoning and name-server block- ing attacks on standard DNS resolvers, by off-path, spoofing adversaries. Our attacks exploit large DNS responses that cause IP fragmentation; such long re- sponses are increasingly common, mainly due to the use of DNSSEC. In common scenarios, where DNSSEC is partially or incorrectly deployed, our poisoning attacks allow 'com- plete' domain hijacking. When DNSSEC is fully de- ployed, attacker can force use of fake name server; we show exploits of this allowing off-path traffic analy- sis and covert channel. When using NSEC3 opt-out, attacker can also create fake subdomains, circumvent- ing same origin restrictions. Our attacks circumvent resolver-side defenses, e.g., port randomisation, IP ran- domisation and query randomisation. The (new) name server (NS) blocking attacks force re- solver to use specific name server. This attack allows Degradation of Service, traffic-analysis and covert chan- nel, and also facilitates DNS poisoning. We validated the attac...

  16. Commercial Fertilizers in 1919-20.

    E-Print Network [OSTI]

    Fraps, G. S. (George Stronach); Asbury, S. E. (Samuel E.)

    1920-01-01

    ......................................... Anal is .......... Fidelity Cotton Special Fertilizer-Guarantee ......................................... Analys~s ........ Fidelity Cotton Standard Fertilizer-Guarantee ......................................... Analysis Fidelity Non-Potassic Meal...-Guarantee ..... ..................................... Analvsis Crockett J6 Per Cent Acid Phosphate-Guarantee .. Analysis ..................................... Hope Fertilizer Co., Hope. Arkansas.- Blood and Bone Hope Standard-Guarantee .......... Analys!s ........................................ Analys~s...

  17. Bio-crude transcriptomics: Gene discovery and metabolic network reconstruction for the biosynthesis of the terpenome of the hydrocarbon oil-producing green alga, Botryococcus braunii race B (Showa)*

    E-Print Network [OSTI]

    2012-01-01

    glycoly- sis and gluconeogenesis) were also identified.during glycolysis/gluconeogenesis (Figure 4). All these

  18. Effects of Protein and Carbohydrate on an Insect Herbivore: The Vista from a Fitness Landscape

    E-Print Network [OSTI]

    Eubanks, Micky

    this biosynthe- sis. Amino acids can, through gluconeogenesis, act as a substrate to generate glucose

  19. Development of Fiber Bragg Grating Strain, Thermal, and Magnetic Sensors for Smart Structure Applications

    E-Print Network [OSTI]

    Emmons, Michael

    2012-01-01

    domain data of magnetic fields oscillating with fourseconds of the magnetic field oscillating at 0.2, 0.5, 1.0,domain data of magnetic fields oscillating with four

  20. Gap solitons in rocking optical lattices and waveguides with undulating gratings

    SciTech Connect (OSTI)

    Mayteevarunyoo, Thawatchai; Malomed, Boris A.

    2009-07-15

    We report results of a systematic analysis of the stability of one-dimensional solitons in a model including the self-repulsive or attractive cubic nonlinearity and a linear potential represented by a periodically shaking lattice, which was recently implemented in experiments with Bose-Einstein condensates. In optics, the same model applies to undulated waveguiding arrays, which are also available to the experiment. In the case of the repulsive nonlinearity, stability regions are presented, in relevant parameter planes, for fundamental gap solitons and their two-peak and three-peak bound complexes, in the first and second finite band gaps. In the model with the attractive nonlinearity, stability regions are produced for fundamental solitons and their bound states populating the semi-infinite gap. In the first finite and semi-infinite gaps, unstable solitons gradually decay into radiation, while, in the second finite band gap, they are transformed into more complex states, which may represent new species of solitons. For a large amplitude of the rocking-lattice drive, the model is tantamount to that with a 'flashing' lattice potential, which is controlled by periodic sequences of instantaneous kicks. Using this correspondence, we explain generic features of the stability diagrams for the solitons. We also derive a limit case of the latter system, in the form of coupled-mode equations with a 'flashing' linear coupling.

  1. Strain-tuning of periodic optical devices : tunable gratings and photonic crystals

    E-Print Network [OSTI]

    Wong, Chee Wei, 1975-

    2003-01-01

    The advancement of micro- and nano-scale optical devices has heralded micromirrors, semiconductor micro- and nano-lasers, and photonic crystals, among many. Broadly defined with the field of microphotonics and microelect ...

  2. Development of Fiber Bragg Grating Strain, Thermal, and Magnetic Sensors for Smart Structure Applications

    E-Print Network [OSTI]

    Emmons, Michael

    2012-01-01

    for Actuators and Sensors, Journal of Intelligent MaterialOptical Fiber Sensors, Journal of Intelligent Materialcoatings for intelligent structure fiber optic sensors, San

  3. Cascaded holographic polymer reflection grating filters for optical-code-division

    E-Print Network [OSTI]

    Djordjevic, Ivan B.

    to make thick samples that can be molded into different forms, and it has a reasonably high efficiency at telecommunication wavelengths. PQ-doped PMMA can be formulated for minimal shrinkage and refractive index change

  4. Reconstruction of long-period fiber gratings from their core-to-core transmission function

    E-Print Network [OSTI]

    Horowitz, Moshe

    pattern.18 Moreover, such a method cannot be implemented for interrogating LPG-based sensors. To the best of our knowledge, the structure of a LPG has not been measured yet. A recon- struction technique

  5. Asymmetry Peculiarities of Surface-Mediated Liquid Crystals Gratings Recorded Due

    E-Print Network [OSTI]

    Reznikov, Yuri

    Institute of Physics, National Academy of Sciences of Ukraine, Kiev, Ukraine 2 Laboratoire des Colloi, National Academy of Sciences of Ukraine, Pr. Nauki 46, Kyiv 03039, Ukraine. Tel.: (38044)5250779; Fax

  6. *Support from EPRI, NSF and ORNL for this work is gratefully acknowledged.

    E-Print Network [OSTI]

    Amin, S. Massoud

    Smart Selfhealing Electric Power Grid #12;Utility construction expendituresUtility construction difficult in the future due to environmental, political, and cost issues. Increasing Outage Events

  7. Multilayer Phase-Only Diffraction Gratings: Fabrication and Application to EUV Optics

    E-Print Network [OSTI]

    Salmassi, Farhad; Gullikson, Eric M.; Anderson, Erik H.; Naulleau, Patrick P.

    2007-01-01

    Application to Diffractive Optics, J. Vac. Sci. & Technol.of advanced diffracitve optics,J. Vac. Sci. & Technol. B,diffusers. Applied Optics, 43, 28, 1 (2004). Patrick P.

  8. Self-seeding of a pulsed double-grating Ti:sapphire laser oscillator...

    Office of Scientific and Technical Information (OSTI)

    21120710 Resource Type: Journal Article Resource Relation: Journal Name: Applied Optics; Journal Volume: 47; Journal Issue: 10; Other Information: DOI: 10.1364AO.47.001517;...

  9. A 10,000 groove/mm multilayer coated grating for EUV spectroscopy

    E-Print Network [OSTI]

    Voronov, Dmytro

    2011-01-01

    a groove density of 5000 lines/mm using a process based ongroove density of 10,000 lines/mm, and coated it with an Al/groove density of 10,000 lines/mm (a); 3D AFM images of the

  10. Picosecond polarization-selective transient grating experiments in sodium-seeded flames

    E-Print Network [OSTI]

    Fayer, Michael D.

    femtosecondlaser pulses,thus providing a usefulmethod for studying ultrafast combustion dynamics over small(FWM). As usefulasthesetechniquesare,how- ever,noneof them measuresfast dynamic combustion pro- cessesdirectly and unambiguously

  11. Solitons in Bragg Gratings with Saturable Nonlinearity Ilya M. Merhasin,1,2

    E-Print Network [OSTI]

    Wai, Ping-kong Alexander

    Department of Mechanical Engineering, University of Hong Kong, Pokfulam Road, Hong Kong Abstract: Coupled-mode a subject of intensive theoretical and experimental research due to their numerous applications to optical manifestation of the nonlinearity is the formation of BG solitons (alias gap solitons, if they are spectrally

  12. Liquid Crystalline Ionomers Containing Azobenzene Mesogens: Phase Stability, Photoinduced Birefringence, and Holographic Grating

    E-Print Network [OSTI]

    Zhao, Yue

    Liquid Crystalline Ionomers Containing Azobenzene Mesogens: Phase Stability, Photoinduced December 20, 2004; Revised Manuscript Received February 14, 2005 ABSTRACT: Liquid crystalline (LC) ionomers the properties of azobenzene polymers. Introduction Liquid crystalline (LC) ionomers are of interest because

  13. Design of midinfrared photodetectors enhanced by surface plasmons on grating structures

    E-Print Network [OSTI]

    Fan, Shanhui

    absorption in the slit by converting incident electromagnetic EM waves into surface plasmons on the metal that enable the excitation of surface plasmons that carry electromagnetic energy towards the slit. Using, usually these detection systems have to be cooled,13 which greatly increases the cost and limits

  14. Design and Fabrication of Integrated Optical Waveguides and Sidewall Bragg Gratings

    E-Print Network [OSTI]

    Wang, Xin

    2014-11-20

    excellent birefringence, electro-optical and acousto-optical effects that enable its high efficiency in nonlinear parametric frequency conversions and flexible tuning capabilities. Secondly, high-quality, low-loss channel waveguide can be made by thin...

  15. Single-mode Er-doped fiber random laser with distributed Bragg grating feedback

    E-Print Network [OSTI]

    Lizarraga, N.; Puente, N. P; Chaikina, E. I; Leskova, T. A; Mendez, E. R

    2009-01-01

    detector UV laser spectrum analyzer pumping laser 980 nmmeasurements we used a spectrum analyzer with a resolution

  16. High Contrast Grating VCSELs: Properties and Implementation on InP-based VCSELs

    E-Print Network [OSTI]

    Chase, Christopher

    2011-01-01

    by the optical spectrum analyzer. a) Example spectrum at 20broaden in an optical spectrum analyzer (OSA) as the laserby the optical spectrum analyzer. a) Example spectrum at 20

  17. Design and fabrication of highly efficient electrooptic modulators using bragg grating reflectors

    E-Print Network [OSTI]

    Kim, Ryoung-Han

    2006-04-12

    crystal if the light is incident along the optic z-axis. D. Electrooptic Effect The propagation of an electro-magnetic wave inside a medium is determined by the refractive index of the medium. The electrooptic effect is the change of refractive...

  18. Force Sensing Robot Fingers using Embedded Fiber Bragg Grating Sensors and Shape Deposition Manufacturing

    E-Print Network [OSTI]

    Park, Yong-Lae

    Manufacturing Yong-Lae Park1 , Kelvin Chau2 , Richard J. Black2 and Mark R. Cutkosky1 1 Center for Design deposition manufacturing (SDM) process was explored. The sensorized SDM-fabricated finger mechanoreceptors on its legs [2], in addition to hair sensors, chemical sensors, etc. [1], [26]. Mechanoreceptors

  19. Development of Fiber Bragg Grating Strain, Thermal, and Magnetic Sensors for Smart Structure Applications

    E-Print Network [OSTI]

    Emmons, Michael

    2012-01-01

    Y. Kurosawa et al. , Polyimide-coated small-diameterwavelength shift in a polyimide coated FBG and the NiTiwavelength shift in a polyimide coated FBG and the NiTi

  20. Polarization of holographic grating diffraction. II. Tsu-Wei Nee and Soe-Mie F. Nee

    E-Print Network [OSTI]

    Shahriar, Selim

    optical prop- erties of the quinine-doped polymethyl methacrylate (PMMA) substrate are reported in Section

  1. Azobenzene Elastomers for Mechanically Tunable Diffraction Gratings Shuying Bai and Yue Zhao*

    E-Print Network [OSTI]

    Zhao, Yue

    -chain liquid crystalline polymers (SCLCPs) were grafted onto a styrene-butadiene-styrene (SBS) triblock preparation method,11 an azobenzene SCLCP was grafted onto a styrene-butadiene-styrene (SBS) triblock

  2. anagin Forests because Carbon Matters: In grating Energy, Products, and Land

    E-Print Network [OSTI]

    Fried, Jeremy S.

    storage and releases, water fluxes from the soil and into the atmosphere, and solar energy copture with traditional forest products, but it may also produce benefits through competition and market efficiency. Short to heart the finding of the Intergovernmental Panel on Oimote OlOnge in its Fourth Assessment Report when

  3. Sunlight and the use of holographic diffraction grating : an environmental perspective

    E-Print Network [OSTI]

    Weber, Sally Nicholson

    1983-01-01

    The movement of sunlight within a building establishes a temporal relation to the spatial structure. Early civilizations aligned buildings with the sun to designate specific calendar days. Gothic and Renaissance cathedrals ...

  4. Synthesis, design and characterization of a distributed feedback grating based non-linear optical chemosensor

    E-Print Network [OSTI]

    Wun, Aetna W. (Aetna Wai-Yue)

    2005-01-01

    Current optical chemosensors that operate by a 3R sensing approach - recognize, relay and report -- generate a measurable luminescent signal in the presence of targeted analyte. However, the advancement of chemical sensing ...

  5. Superhydrophobic turbulent drag reduction as a function of surface grating parameters

    E-Print Network [OSTI]

    Park, H; Park, H; Sun, G; Sun, G; Kim, CJ

    2014-01-01

    increasing width of the water-air interface. Since the lossno air loss and flat air-water interface, numerical effortsKim 2009), was a stable air-water interface guaranteed and a

  6. Development of Fiber Bragg Grating Strain, Thermal, and Magnetic Sensors for Smart Structure Applications

    E-Print Network [OSTI]

    Emmons, Michael

    2012-01-01

    the hyperelastic thin film nitinol, Journal of Intelligentand analysis of thin film Nitinol/Terfenol-D multilaminateNiTi), also known as Nitinol, is a ferroelastic material

  7. Devotion to Jesus and Historical Investigation. A Grateful, Clarifying and Critical Response to Professor Casey

    E-Print Network [OSTI]

    Hurtado, Larry W

    2004-01-01

    It is obviously very gratifying to have my recent book (Lord Jesus Christ: Devotion to Jesus in Earliest Christianity, hereafter referred to as LJC) given the attention represented in Professor Caseys commissioned review ...

  8. Band gap gratings using quantum well intermixing for quasi-phase-matching

    E-Print Network [OSTI]

    ,b D. C. Hutchings,b J. S. Aitchison, and J. H. Marshc Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada, correlated photon pair sources, and cascaded Kerr-like nonlinearities, only to name a few. Particularly

  9. Near-normal-incidence extreme-ultraviolet efficiency of a flat crystalline anisotropically etched blazed grating

    E-Print Network [OSTI]

    designs for high- resolution EUV spectroscopy in astrophysics where high efficiency in high orders produce more scattered light. Second, deviations in the groove profile from an ideal shape cause power.kowalski@nrl.navy.mil) is with the U.S. Naval Research Laboratory, Code 7655.3, 4555 Overlook Avenue, SW, Washington, D.C. 20375. R. K

  10. Modeling CHANDRA Low Energy Transmission Grating Spectrometer Observations of Classical Novae with PHOENIX

    E-Print Network [OSTI]

    Alexander Petz; Peter H. Hauschildt; Jan-Uwe Ness; Sumner Starrfield

    2005-01-05

    We use the PHOENIX code package to model the X-ray spectrum of Nova V4743 Sagittarii observed with the LETGS onboard the Chandra satellite on 19 March 2003. To analyze nova atmospheres and related systems with an underlying nuclear burning envelope at X-ray wavelengths, it was necessary to update the code with new microphysics. We demonstrate that the X-ray emission is dominated by thermal bremsstrahlung and that the hard X-rays are dominated by Fe and N absorption. Preliminary models are calculated assuming solar abundances. It is shown that the models can be used to determine element abundances in the nova ejecta by increasing the absorption in the shell.

  11. Self-seeding of a pulsed double-grating Ti:sapphire laser oscillator

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:SpeedingPennsylvaniaSwitch toSwitchSwitch toSwitchSwitch(Journal Article) |

  12. A Numerical Algorithm for Single Phase Fluid Flow in Elastic Porous ...

    E-Print Network [OSTI]

    2000-11-13

    flow in deforming saturated oil reservoirs, Int. J. Num. & Analy. Methods ... tion, New Mexico Institute of Mining and Technology, Socorro, NM,. 1998. [15] Raviart

  13. Einfuhrung 15.07.2005. DFB Lasers optical field

    E-Print Network [OSTI]

    Wnsche, Hans-Jrgen "Ede"

    entsprechen den Polen von r. Die sind in den weissen Flecken: index grating wavelength gain complex grating

  14. 8 MARCH 2013 VOL 339 SCIENCE www.sciencemag.org1132 NEWS OF THE WEEK

    E-Print Network [OSTI]

    such as psoriasis, rheumatoid arthritis, and multiple sclero- sis. They also showed that a salt-rich diet makes mice

  15. Robotic Construction by Contour Crafting Behrokh Khoshnevis, Professor, University of Southern California

    E-Print Network [OSTI]

    Liu, X. Shirley

    the development of three novel Additive Manufacturing (3D Printing) processes called Contour Crafting, SIS and MPM

  16. COLLABORATION This publication was funded by generous gifts from our alumni and friends. We are deeply grateful for your

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    Rehabilitation With Augmented Reality...14 Technology used in some smart phone games can be used to help people Using soundwaves to harvest algae for biofuels is a possibility for a future energy source. Brotherly me a more motivated, successful, and passionate student. The engineering programs at Colorado State

  17. Influence of transient absorber gratings on the pulse parameters of passively mode-locked cw dye ring lasers

    SciTech Connect (OSTI)

    Kuehlke, D.; Rudolph, W.; Wilhelmi, B.

    1983-02-15

    A theoretical explanation of the experimental results obtained by the method of colliding pulse mode locking (CPM) is given. It is shown that, compared to other passive methods, the coherent interaction of the counter-running pulses in the thin absorber yields considerably shorter pulses with a more favorable stability region. Deviations from an amplifier position being symmetric with respect to the amplification of the counter-running pulses lead to different energies of the pulses and to a strong decrease of the stability range of the CPM.

  18. November 1, 1994 / Vol. 19, No. 21 / OPTICS LETTERS 1681 Laser-induced thermal grating effects in flames

    E-Print Network [OSTI]

    in flames Skip Williams,* Larry A. Rahn, Phillip H. Paul, and Jon W. Forsmant Combustion Research Facility and E2 are supplied from a cw ring-dye laser that was pulse amplified by a single-mode Nd:YAG- pumped having pulse widths of -20 ns and bandwidths of -0.001 cm-1. The scattering field, E3, was derived from

  19. 314 IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 23, NO. 5, MARCH 1, 2011 Tilted Fiber Bragg Grating for Chirped Microwave

    E-Print Network [OSTI]

    Yao, Jianping

    for Chirped Microwave Waveform Generation Ming Li, Member, IEEE, Li-Yang Shao, Jacques Albert, Member, IEEE shaper to generate a chirped microwave waveform in a spectral-shaping and wavelength-to-time (SS a TFBG into an SS-WTT system, a chirped microwave waveform is generated with the chirp rate determined

  20. Modeling CHANDRA Low Energy Transmission Grating Spectrometer Observations of Classical Novae with PHOENIX. I. V4743 Sagittarii

    E-Print Network [OSTI]

    Alexander Petz; Peter H. Hauschildt; Jan-Uwe Ness; Sumner Starrfield

    2004-10-15

    We use the PHOENIX code package to model the X-ray spectrum of Nova V4743 Sagittarii observed with the LETGS onboard the Chandra satellite on March 2003. Our atmosphere models are 1D spherical, expanding, line blanketed, and in full NLTE. To analyze nova atmospheres and related systems with an underlying nuclear burning envelope at X-ray wavelengths, it was necessary to update the code with new microphysics, as discussed in this paper. We demonstrate that the X-ray emission is dominated by thermal bremsstrahlung and that the hard X-rays are dominated by Fe and N absorption. The best fit to the observation is provided at a temperature of T_eff = 5.8 x 10^5 K, with L_bol = 50 000 L_sun. The models are calculated for solar abundances. It is shown that the models can be used to determine abundances in the nova ejecta.

  1. Enhancement of optical absorption in thin-film organic solar cells through the excitation of plasmonic modes in metallic gratings

    E-Print Network [OSTI]

    Fan, Shanhui

    Enhancement of optical absorption in thin-film organic solar cells through the excitation.1063/1.3377791 Thin-film organic solar cells OSCs are a promising candidate for low-cost energy conversion.16 However 2010 We theoretically investigate the enhancement of optical absorption in thin-film organic solar

  2. Galen Sasaki University of Hawaii 1 Galen Sasaki University of Hawaii 2

    E-Print Network [OSTI]

    Sasaki, Galen H.

    1 Galen Sasaki University of Hawaii 1 Components Passive Active Galen Sasaki University of Hawaii 2 Components Couplers Isolators and Circulators Multiplexers and Filters Gratings Bragg Gratings Fiber Gratings Fabry Perot Filters Galen Sasaki University of Hawaii 3 Outline Couplers

  3. The effect of footwear and surface conditions on spinal contour and flexibility with constrained standing

    E-Print Network [OSTI]

    Stephenson, Donya Ann

    1995-01-01

    different foot conditions for periods of four hours on four consecutive days. The floor surfaces used included two types of anti-fatigue mats (Hygenic 1, Ergomat), three types of industrial grating (Metal Grating, Clean Room Grating, Standard Clean Room...

  4. DISTRIBUTED ENERGY SYSTEMS IN CALIFORNIA'S FUTURE: A PRELIMINARY REPORT, VOLUME I

    E-Print Network [OSTI]

    Authors, Various

    2010-01-01

    Principal Investigator, Wind Energy Mission Analys~s, F~nalKlems, A California Wind Energy Resource, to be published inCurrents Salinity Gradients WIND ENERGY Characteristics of

  5. SOFCSOFC (10kW(10kW )) Stack Stack ( )

    E-Print Network [OSTI]

    Hong, Deog Ki

    & Mitsubishi (band ) 150 kW module Rolls-Royce () 100kW SOFC TOTO, Kyushu () 20kW stack wet process #12;2 SOFC () Mitsubishi Heavy Ind. SIS 250kW 55% Rolls-Royce SIS 250kW (micro GT-SOFC) 53% (125 kW ) Tokyo Gas SIS kW (5kW ) / #12

  6. Near-field imaging with far-field data

    E-Print Network [OSTI]

    2015-08-13

    Aug 13, 2015 ... imaging of periodic structures known as diffraction gratings. The grating surface ... our effort to design more practical models and efficient meth-.

  7. Polysubstance and alcohol dependence: Unique abnormalities of magnetic resonance-derived brain metabolite levels

    E-Print Network [OSTI]

    Ab, C; Mon, A; Durazzo, TC; Pennington, DL; Schmidt, TP; Meyerhoff, DJ

    2013-01-01

    synthesis, cellular bioenergetics, glio- sis) and alteredCho), cellular bioenergetics (Creatine, Cr), astroglio-to abnor- mal cellular bioenergetics (lower Cr; Licata and

  8. Witnesses to an Elusive Reality: Pirandello's and Antonioni's Characters in Search of a Story

    E-Print Network [OSTI]

    Martinescu, Mihaela

    2013-01-01

    links Pirandello to the cinematic genre acknowledges andcommentary on the cinematic medium. The protagonistsis a commentary on the cinematic medium, cinema produces

  9. Block-oriented nonlinear system identification using semidenite programming

    E-Print Network [OSTI]

    Han, Younghee

    2012-01-01

    Industrial and Engineering Chemistry Research, 39:43024314,Industrial and engineering chemistry research, 44:18231831,sis. Industrial and engineering chemistry research, 44:6719

  10. Subscriber access provided by DUKE UNIV ACS Nano is published by the American Chemical Society. 1155 Sixteenth Street

    E-Print Network [OSTI]

    Liu, Jie

    transistor,4 field emission,5,6 super capacitor,7,8 and photovoltaic9,10 devices. Recently, synthe- sis

  11. Nonadiabatic Molecular Dynamics Simulation of Light-Induced Electron Transfer from an Anchored Molecular Electron Donor to a Semiconductor Acceptor

    E-Print Network [OSTI]

    is typical of the dye sensitized semiconductor nanomaterials used in solar cell, photocatalysis important applications including photocatalysis, photoelectroly- sis, solar cells, waste processing

  12. ENZYMES AND MICROORGANISMS IN FOOD INDUSTRY WASTE PROCESSING AND CONVERSION TO USEFUL PRODUCTS: A REVIEW OF THE LITERATURE

    E-Print Network [OSTI]

    Carroad, P.A.

    2010-01-01

    A. L, 1 Alcohol: a Brazil answer the energy sis. ence, 195:an answer d-j energy cris-j s in Brazil (20). ut retuwl ng

  13. Broadband second-harmonic generation in Sr,Ba, J+lb2Q6 by spread spectrum phase matching with controllable domain gratings

    E-Print Network [OSTI]

    Fischer, Baruch

    to the relatively small birefiingence of the crystal (An ~0.012 for x=0.75 and Anz0.029 for x=0.61 at wave- lengths

  14. Message from Sophie Prize Winner I am grateful to Jostein Gaarder and the Sophie Foundation for the opportunity to discuss the

    E-Print Network [OSTI]

    Hansen, James E.

    . Stabilizing climate requires restoring our planet's energy balance. The physics is straightforward. The effect the last drops of oil. Actions needed so that the world can move on to the clean energies of the future of increasing carbon dioxide on Earth's energy imbalance is confirmed by precise measurements of ocean heat gain

  15. GRATEFUL APPRECIATION TO PARTNERS The U.S. Department of Energy would like to acknowledge the in-depth analysis and

    E-Print Network [OSTI]

    McCalley, James D.

    the in-depth analysis and extensive research conducted by the National Renewable Energy Laboratory industry organizations that contributed to the production of this report. The costs curves for energy and Renewable Energy Consulting Services, Inc. of Palo Alto, CA. All authors and reviewers who contributed

  16. High-resolution grazing-incidence grating spectrometer for temperature measurements of low-Z ions emitting in the 100300 spectral band

    SciTech Connect (OSTI)

    Widmann, K., E-mail: widmann1@llnl.gov; Beiersdorfer, P.; Magee, E. W. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Boyle, D. P.; Kaita, R.; Majeski, R. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

    2014-11-15

    We have constructed a high-resolution grazing-incidence spectrometer designed for measuring the ion temperature of low-Z elements, such as Li{sup +} or Li{sup 2+}, which radiate near 199 and 135 , respectively. Based on measurements at the Livermore Electron Beam Ion Trap we have shown that the instrumental resolution is better than 48 m at the 200 setting and better than 40 m for the 135- range. Such a high spectral resolution corresponds to an instrumental limit for line-width based temperature measurements of about 45 eV for the 199 Li{sup +} and 65 eV for the 135 Li{sup 2+} lines. Recently obtained survey spectra from the Lithium Tokamak Experiment at the Princeton Plasma Physics Laboratory show the presence of these lithium emission lines and the expected core ion temperature of approximately 70 eV is sufficiently high to demonstrate the feasibility of utilizing our high-resolution spectrometer as an ion-temperature diagnostic.

  17. Numerical Irreducible Decomposition using PHCpack #

    E-Print Network [OSTI]

    Sommese, Andrew J.

    in several variables. # The authors gratefully acknowledge the support of this work by Volkswagen Stiftung

  18. Femtochemistry at gas/solid interfaces A thesis presented

    E-Print Network [OSTI]

    Mazur, Eric

    am also deeply grateful to other faculty members at Harvard. Professor Cynthia Friend taught me much

  19. California department of education HQ block 225: California's valedictorian

    E-Print Network [OSTI]

    Bauman, Fred; Webster, Tom; Dickerhoff, Darryl J; Fentress, Curtis; Popowski, Matt

    2009-01-01

    Commissioning SMWM A photovoltaic system is integrated intointe- grated photovoltaic system. The 310 photovoltaic

  20. Subsidizing Solar: The Case for an Environmental Goods and Services Carve-out from the Global Subsidies Regime

    E-Print Network [OSTI]

    Simmons, Zachary Scott

    2014-01-01

    solar collectors and system controllers, wind- turbine parts and components, stoves, grates and cookers,

  1. LIBRARY STAFF CONSULTATIVE COMMITTEE DIVISION OF INFORMATION

    E-Print Network [OSTI]

    LIBRARY STAFF CONSULTATIVE COMMITTEE DIVISION OF INFORMATION THE AUSTRALIAN NATIONAL UNIVERSITY DRAFT MINUTES A meeting of the Library Staff Consultative Committee was held on 4 June 2012 commencing on the Library/SIS and Roxanne will meet with her in a fortnight. Admin Review The Library/SIS will have

  2. LBNL50762, CBP Note440 Summary of Session III

    E-Print Network [OSTI]

    Furman, Miguel

    and its Ap- plication to SIS-100/200. The SIS machines are syn- chrotrons being designed at GSI to store U to be uniform and is character- ized by a leak parameter = (ion density in gap)/(ion den- sity at center() plays the role of the periodic focusing function. This equation is analyzed by standard transfer

  3. Make the Web Work: Leveraging Technology in Uncertain Times

    E-Print Network [OSTI]

    Make the Web Work: Leveraging Technology in Uncertain Times Kristin Schuette Information web programmers (all three hired in last 3 years) Legacy system (SIS) with sql server extracts extracts of SIS Updated once a day RO SQL Servers RO Web Servers Web User VB Macro #12;WWW.REG.MSU.EDU Past

  4. Extreme State of Matter Physics at FAIR BorisBoris SharkovSharkov

    E-Print Network [OSTI]

    Production Target 2Sharkov #12;3 Austria IndiaChina Finnland France Germany Greece UKItaly Poland Slovakia accelerator systems to be constructed in Darmstadt High-Energy Storage Ring HESR Synchrotrons SIS100 SIS300 p Separator Super-FRS Recycled Exp. Storage Ring RESR 300m Rare Isotope Production Target Antiproton

  5. The Spindle Pole Body Assembly Component Mps3p/Nep98p Functions in Sister Chromatid Cohesion*

    E-Print Network [OSTI]

    Fields, Stan

    The Spindle Pole Body Assembly Component Mps3p/Nep98p Functions in Sister Chromatid Cohesion- sis, several processes must occur early in the cell cycle, including spindle pole duplication, DNA replication, and the establishment of cohesion between nascent sis- ter chromatids. Spindle pole body

  6. Microwave band gap and cavity mode in spoof-insulator-spoof waveguide with multiscale structured surface

    E-Print Network [OSTI]

    Zhang, Qiang; Han, Dezhuan; Qin, Fei Fei; Zhang, Xiao Ming; Yao, Yong

    2015-01-01

    We propose a multiscale spoof-insulator-spoof (SIS) waveguide by introducing periodic geometry modulation in the wavelength scale to a SIS waveguide made of perfect electric conductor. The MSIS consists of multiple SIS subcells. The dispersion relationship of the fundamental guided mode of the spoof surface plasmon polaritons (SSPPs) is studied analytically within the small gap approximation. It is shown that the multiscale SIS possesses microwave band gap (MBG) due to the Bragg scattering. The "gap maps" in the design parameter space are provided. We demonstrate that the geometry of the subcells can efficiently adjust the effective refraction index of the elementary SIS and therefore further control the width and the position of the MBG. The results are in good agreement with numerical calculations by the finite element method (FEM). For finite-sized MSIS of given geometry in the millimeter scale, FEM calculations show that the first-order symmetric SSPP mode has zero transmission in the MBG within frequency...

  7. Integrated safeguards and security for the INEL Special Isotope Separation Plant

    SciTech Connect (OSTI)

    Warner, G.F.; Zack, N.R.

    1990-06-12

    This paper describes the approach that was taken in developing safeguards and security design criteria to be used for the Special Isotope Separation (SIS) Production Plant. The US Department of Energy has postponed the construction of the SIS Production Plant that was to be built at the Idaho National Engineering Laboratory (INEL) site located near Idaho Falls, Idaho. The SIS Plant planned to isotopically enrich plutonium utilizing the Atomic Vapor Laser Isotope Separation (AVLIS) process developed at the Lawrence Livermore National Laboratory. Westinghouse Idaho Nuclear Co., Inc. as a prime contractor to the DOE Idaho Operations Office, was to operate the Plant.

  8. Design of an Automatic Landing System for the Meridian UAV using Fuzzy Logic

    E-Print Network [OSTI]

    Royer, David Andrew

    2010-04-22

    This document describes the design of an automatic landing system for the Meridian unmanned aerial vehicle (UAV) in development for glacial ice research. The Center for Remote Sensing of Ice Sheets (CReSIS), established by the National Science...

  9. Application of coincidence ion mass spectrometry for chemical and structural analysis at the sub-micron scale

    E-Print Network [OSTI]

    Balderas, Sara

    2005-11-01

    the chemical composition of nano-domains. Previous studies using coincidence counting mass spectrometry (CCMS) indicated an enhancement of identifying correlations between SIs which share a common origin. This variant of SIMS requires an individual projectile...

  10. Heterodimerization of Propylene and Vinylarenes: Functional Group Compatibility in a Highly Efcient

    E-Print Network [OSTI]

    RajanBabu, T. V. "Babu"

    such as CO, HCN, ethylene and other simple olens for the synthe- sis of key chemical intermediates with substrates having Lewis basic centers. Among the other notable hydrovinylation conditions is a palladium

  11. Antikaon flow in heavy-ion collisions: Effects of absorption and mean-field potential

    E-Print Network [OSTI]

    Li, GQ; Ko, Che Ming.

    1996-01-01

    We study antikaon flow in heavy-ion collisions at SIS energies based on the relativistic transport model (RVUU 1.0). The production of antikaons from both baryon-baryon and pion-baryon collisions are included. Taking into ...

  12. School of Information Sciences College of CoMMUNICATIoN & INfoRMATIoN

    E-Print Network [OSTI]

    Wang, Xiaorui "Ray"

    and BOV Professor Carol Tenopir will step down from her CCI research leadership role and return to the SIS as the inaugural CCI Board of Visitors (BOV) Professor. On the occasion of her decision to step away from her

  13. Conformational Preferences and Pathways for Enantiomerization and Diastereomerization of Benzyl Alcohol. Data Mining and ab

    E-Print Network [OSTI]

    Glaser, Rainer

    -electron repulsion between the O-lone pairs and the benzene -cloud, the charge-charge attraction between the hydroxyl carcinogenesis. A variety of amine derivatives are transformed into alkyldiazohydroxides, and heteroly- sis leads

  14. OpenPolarServer (OPS) - An Open Source Spatial Data Infrastructure for the Cryosphere Community

    E-Print Network [OSTI]

    Purdon, Kyle Wayne

    2014-05-31

    EXT and others are used to build a system that modernizes the CReSIS SDI for the entire cryosphere community and creates a flexible platform for future development....

  15. Biogeosciences, 6, 11991207, 2009 www.biogeosciences.net/6/1199/2009/

    E-Print Network [OSTI]

    Morel, Franois M. M.

    Biogeosciences, 6, 11991207, 2009 www.biogeosciences.net/6/1199/2009/ Author(s) 2009. This work carbon fixation in the dark reaction of photosynthe- sis and thus increase primary production

  16. Deformation behavior of cylindrical block copolymer bicrystals : pathway to understanding block copolymer grain boundaries

    E-Print Network [OSTI]

    Wanakamol, Panitarn

    2006-01-01

    Model bicrystals made by adhering pieces of near-single-crystal styrene-isoprene-styrene (SIS) cylindrical block copolymer (BCP), produced by a roll-casting process; yield various types of pure tilt grain boundaries. The ...

  17. CONNECTIONMarch 2013 Inside this issue

    E-Print Network [OSTI]

    California at Davis, University of

    Bovine - Arsenic toxico- sis Equine - Serum hepatitis Equine - Contagious eq- uine metritis Porcine in horses that have not re ceived such injec ons. Taylorella equigenitalis, the cause of contagious equine

  18. MATHEMATICAL MODELING OF THE LITHIUM-ALUMINUM, IRON SULFIDE BATTERY

    E-Print Network [OSTI]

    Pollard, Richard

    2012-01-01

    a-phase to the solid-electrolyte interface. The parameter sis restricted to the solid-electrolyte interface (see TheVolume fractions of solid phases and electrolyte in positive

  19. Laser applications

    SciTech Connect (OSTI)

    Edelson, M.C. )

    1989-11-01

    The breadth of current applications of laser technology is described. It is used as the basis for extrapolating to future application in such activities as AVLIS, SIS, ICP-MS, and RIMs.

  20. Universite libre de Bruxelles Ecole polytechnique de Bruxelles

    E-Print Network [OSTI]

    Cerf, Nicolas

    of mine and introduced me to the martial art Taekwondo. I am also grateful to Arno Rauschenbeutel for sup

  1. April 29, 2002 12:27 Proceedings of DETC'02

    E-Print Network [OSTI]

    Verschelde, Jan

    gratefully acknowledge the support of this work by VolkswagenStiftung (RiPprogram at Oberwol fach

  2. How to Mentor Students: A Guide

    E-Print Network [OSTI]

    Tilbury, Dawn

    of Elaine Dowell and Ellen Meader. I am grateful, too, for the edits suggested by another of the Graduate

  3. ECONOMIC INSTRUMENTS Managing the Resources of Forest Landscapes

    E-Print Network [OSTI]

    Research Unit provided space and facilities to carry out the work. We are grateful to Dr. Richard Paisley

  4. Lesson Summary In this lesson, students will build an open spectrograph to

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    ") rectangular of 5mm (3/16") thick foam core board 2-Styrofoam cups Holographic diffraction grating (1000

  5. Intercity Rail Ridership Forecasting and the Implementation of High-Speed Rail in California

    E-Print Network [OSTI]

    Vaca, Erin

    1993-01-01

    California Transportation Center is gratefully iv aclmowledged. (CALTRANS) and INTRODUCTION AND BACKGROE~D transit systems, power plants,

  6. Hyper dispersion pulse compressor for chirped pulse amplification systems

    DOE Patents [OSTI]

    Barty, Christopher P. J. (Hayward, CA)

    2011-11-29

    A grating pulse compressor configuration is introduced for increasing the optical dispersion for a given footprint and to make practical the application for chirped pulse amplification (CPA) to quasi-narrow bandwidth materials, such as Nd:YAG. The grating configurations often use cascaded pairs of gratings to increase angular dispersion an order of magnitude or more. Increased angular dispersion allows for decreased grating separation and a smaller compressor footprint.

  7. YOUR INBOX IS FULL OF AWESOMENESS Welcome new Friday Bit subscribers! Thank you for self-identifying and requesting to join the Friday Bit

    E-Print Network [OSTI]

    will be recognized with our grateful thanks and a named plaque. #12;WILDLINGS Pop Art - you love it, right? T

  8. TRIDAC host computer functional specification

    SciTech Connect (OSTI)

    Hilbert, S.M.; Hunter, S.L.

    1983-08-23

    The purpose of this document is to outline the baseline functional requirements for the Triton Data Acquisition and Control (TRIDAC) Host Computer Subsystem. The requirements presented in this document are based upon systems that currently support both the SIS and the Uranium Separator Technology Groups in the AVLIS Program at the Lawrence Livermore National Laboratory and upon the specific demands associated with the extended safe operation of the SIS Triton Facility.

  9. The authors are grateful for sustained and generous financial support by the Rio Grande Basin Initiative Program, the U.S. Geological Survey, and by the Agricultural Experiment Stations and Water Resources Research

    E-Print Network [OSTI]

    Resources Research Institutes of Colorado, New Mexico, and Texas. Economic Impact of Alternative Policy of Economics and Environmental Studies Program Director Department of Economics Siena College Loudonville, NY. Ward Professor Department of Agricultural Economics and Agricultural Business New Mexico State

  10. 2100 JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 27, NO. 12, JUNE 15, 2009 Simultaneous Interrogation of a Hybrid FBG/LPG

    E-Print Network [OSTI]

    Yao, Jianping

    of a Hybrid FBG/LPG Sensor Pair Using a Monolithically Integrated Echelle Diffractive Grating Honglei Guo--A simultaneous interrogation technique of a hybrid fiber Bragg grating (FBG) and long-period grating (LPG) sensor to interrogate hybrid FBG/LPG-based sensor pairs for the discrimination of refractive index (RI)/tem- perature

  11. Igor Kagan1, Moshe Gur1,2, D. Max Snodderly2,3 1 Dept. of Biomedical Engineering, Technion, Haifa, Israel;

    E-Print Network [OSTI]

    Kagan, Igor

    a significant quasi-linear (fundamental, F1) harmonic in the responses to drifting sinusoidal luminance gratings: harmonic content spikes/sec F0 F1 F2 Grating temporal cycle (TF 5Hz) Spikes Horizontal Vertical #12;Results Some cells that responded with F1 modulation to high temporal frequency gratings gave frequency doubled

  12. Shot noise in tunneling through a quantum dot array G. Kiesslich*; 1

    E-Print Network [OSTI]

    Hohls, Frank

    Shot noise in tunneling through a quantum dot array G. Kiesslich*; 1 , A. Wacker1 , E. Schll1 , A 2003 PACS 72.70.+m, 73.40.Gk, 73.63.Kv The shot noise suppression in a sample containing a layer be qualitatively reproduced by an analy- tical expression. 1 Introduction Shot noise measurements provide

  13. Physical Characterization of Arbiter PUFs Shahin Tajik1

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Physical Characterization of Arbiter PUFs Shahin Tajik1 , Enrico Dietz2 , Sven Frohmann2 , Jean and XOR-enhanced) PUFs can be com- pletely and linearly characterized by means of photonic emission analy PUFs can be characterized and cloned physically by semi-invasive and fully invasive attacks [10, 20

  14. Atmos. Chem. Phys., 5, 20652079, 2005 www.atmos-chem-phys.org/acp/5/2065/

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    in the case examined, which was also successfully forecasted by the DREAM dust model. The lidar data analy natural sources (wind- borne dust, sea spray, forest fires and volcanic eruptions, etc.) and anthropogenic- creasing urbanization and industrialization over the whole Mediterranean region and especially along

  15. 20`eme Congr`es Francais de Mecanique Besancon, 29 ao^ut au 2 septembre 2011 Simulations numeriques de phenom`enes anisotropes

    E-Print Network [OSTI]

    Vallette, Bruno

    analyses. Abstract : In order to study plasma for Magnetic Confinement Fusion, we consider a fluideriques de phenom`enes anisotropes pour la Fusion par Confinement Magnetique 1 A. Bonnementa,b, H. 1 Introduction La Fusion par Confinement Magnetique (FCM) s'appuie sur le principe de production d

  16. A Thermal Sensation Index for Real-Time Tuning and Energy-Optimal Control of HVAC Systems

    E-Print Network [OSTI]

    Federspiel, C. C.; Norford, L.

    1992-01-01

    .ule> fur PMV. Th'c PMV index was developed analy,i, ,<),,!. The limitations of using PMV for feedback control are nuL .tS significant when PMV is used for design and analysis problems. Instead we propose 'Ii for use as the controlled...

  17. MFR PAPER 1065 The food service industry

    E-Print Network [OSTI]

    .,upported bJ naltonal ad\\ertl\\lng to gain entn intl) the re- tatl market \\l oreo\\t.:r. there are pre,- e\\aluated the producl.~ SURVEY RESULTS The fO"~1\\\\lng 1\\ an anal},i ... of the ...une} re"'pon,e, \\\\hlloh highlight

  18. Lazy Lexing is Fast Manuel M. T. Chakravarty

    E-Print Network [OSTI]

    Chakravarty, Manuel

    is fully implemented by a Haskell library, called Lexers, and the code is available for public use. 1 tables from regular ex pressions in a lazy functional language. -- A combinator library for specifying introduces a set of combinators for building lexical analys ers in a lazy functional language. During

  19. Risa-R-411 Nonlinear Finite

    E-Print Network [OSTI]

    å Risa-R-411 Nonlinear Finite Element Analysis of Concrete Structures Niels Saabye Ottosen Risø | other IAEA P. 0. Box 100 A-1400, Vienna, Austria #12;RIS?-R-411 NONLINEAR FINITE ELEMENT ANALYSIS OF CONCRETE STRUCTURES Niels Saabye Ottosen Abstract. This report deals with nonlinear finite element analy

  20. Publications of D.V. Griffiths Journal Publications

    E-Print Network [OSTI]

    of deep foundations in cohe- sive soils." Int J Numer Anal Methods Geomech, vol.6, no.2, pp.211- 218-fluid compressibility on failure loads in elasto-plastic soil." Int J Numer Anal Methods Geomech, vol.9, no.3, pp.253-259, (1985) [6] Griffiths, D.V. and Koutsabeloulis, N.C. "Finite element analy- ses of vertical excavations

  1. Frontires sociales, mentales, politiques : sur quelques caractristiques du libralisme. Regard sur la protection sociale.

    E-Print Network [OSTI]

    Boyer, Edmond

    sident Lincoln Johnson, au nom vocateur de War against poverty1 . De nombreux auteurs ont analys cette: A Comparative Analysis", in Bristish Journal of Political Science, 3, nPoverty.J.: Rutgers University Press, 1988 ; Duncan G.J., "Poverty and social Assistance Dynamics in the United States

  2. Phase plate technology for laser marking of magnetic discs

    DOE Patents [OSTI]

    Neuman, B.; Honig, J.; Hackel, L.; Dane, C.B.; Dixit, S.

    1998-10-27

    An advanced design for a phase plate enables the distribution of spots in arbitrarily shaped patterns with very high uniformity and with a continuously or near-continuously varying phase pattern. A continuous phase pattern eliminates large phase jumps typically expected in a grating that provides arbitrary shapes. Large phase jumps increase scattered light outside of the desired pattern, reduce efficiency and can make the grating difficult to manufacture. When manufacturing capabilities preclude producing a fully continuous grating, the present design can be easily adapted to minimize manufacturing errors and maintain high efficiencies. This continuous grating is significantly more efficient than previously described Dammann gratings, offers much more flexibility in generating spot patterns and is easier to manufacture and replicate than a multi-level phase grating. 3 figs.

  3. Use of Dynamical Undulator Mechanism to Produce Short Wavelength Radiation in Volume FEL (VFEL)

    E-Print Network [OSTI]

    V. G. Baryshevsky; K. G. Batrakov

    2002-09-06

    VFEL lasing in system with dynamical undulator is described. In this system radiation of long wavelength creates the undulator for lasing on shorter wavelength. Two diffraction gratings with different spatial periods form VFEL resonator. The grating with longer period pumps the resonator with long wavelength radiation to provide necessary amplitude of undulator field. The grating with shorter period makes mode selection for short wavelength radiation. Lasing of such a system in terahertz frequency range is discussed.

  4. Al+LiF Coated Focal Plane

    E-Print Network [OSTI]

    Al+LiF Coated Mirror #2 Focal Plane Assemblies (4) Detectors (2) Al+LiF Coated Mirror #1 SiC Coated Mirror #2 SiC Coated Mirror #1 Rowland Circles Al+LiF Coated Grating #2 Al+LiF Coated Grating #1 SiC Coated Grating #2 z y x Figure 1 A schematic view of the FUSE optical system. 1. INTRODUCTION The Far

  5. Ash, calcium, phosphorus and magnesium content of the metacarpus of hereford cows under different nutritional and physiological conditions

    E-Print Network [OSTI]

    Haque, Mozammel

    1967-01-01

    ASH, CALCIUM, PHOSPHORUS AND MAGNESIUM CONTENT OF THE METACARPUS OF HEREFORD COWS UNDER DIFFERENT NUTRITIONAL AND PHYSIOLOGICAL CONDITIONS A Thesis By MOZAMMEL HAQUE Submitted to the Graduate College of the Texas A&M University in partial... centages of Calcium, Phosphorus snd Magnesium in Bone Ash for Cows Gi;en Different Treatments During Pre- And Post-Partum Periods 22 10 Analysis of Variance oi Calcium in Bone Ash Dun an's )tultiple tvange Test 1'or Calcium in Bone Ash. Analy...

  6. Uranium roll front study in the upper Jackson group, Atascosa County, Texas

    E-Print Network [OSTI]

    Miller, Michael Eugene

    1979-01-01

    Section and Outcrop Description Sampling Procedure Laboratory Methods Delayed Neutron Activation Analysis. Uranium Concentrations in Sediment Size Fractions. Fission Track Analysis X-ray Diffraction Analysis RESULTS Calliham Sandstone Fashing Clay... Page 4 5 8 9 9 11 14 15 16 16 16 21 22 25 29 32 32 34 35 35 39 40 42 48 48 50 TABLE OF CONTENTS - Continued Uranium D1str1bution (Megascopic) Size Fraction Analys1s. Fission Track Analysis (Microscopic) Organic...

  7. The influence of cultivar, price, and longevity on consumer preferences for potted chrysanthemums (chrysanthemum x morifolium L. Ramat.)

    E-Print Network [OSTI]

    Shafer, Barbara Susan

    1984-01-01

    of marketing research emphasis in research institutions and the minimal need for marketing research perceived by growers and retailers, it is not surprising that it has taken marketing research qutte some time to become established as an acceptable... analys1s of production (16, 53, 56, 57, 68, 70, 72, 73), sales forecast1ng (60, 63), and market characteristics (34, 61, 65, 72, 73). These subjects are of interest to growers and retailers but are of relatively little value in determining consumer...

  8. Environmental Cost Analysis

    E-Print Network [OSTI]

    Edge, D.

    2000-01-01

    Analysis David Edge Texas Natural Resource Conservation Commission 131 ESL-IE-00-04-21 Proceedings from the Twenty-second National Industrial Energy Technology Conference, Houston, TX, April 5-6, 2000 Tuas Natural Resource Conservation Cor...DDliuion Environmental Cost Analysis Presented By David Edge Determine the Costs c> Input co Output c> Hidden c> Capital (non recurring) Envirormenlal Cost Analy.;is "There has to be a measurable result ofimprovement and it should be tied to dollars...

  9. Fast methods for inverse wave scattering problems

    E-Print Network [OSTI]

    Lee, Jung Hoon, Ph. D. Massachusetts Institute of Technology

    2008-01-01

    Inverse wave scattering problems arise in many applications including computerized/diffraction tomography, seismology, diffraction/holographic grating design, object identification from radar singals, and semiconductor ...

  10. 3245.ps.gz

    E-Print Network [OSTI]

    2012-01-18

    The author thanks Humboldt Fundation for the financial assistance during this visit, and he is much more than grateful to Professor Schittkowski for his warm...

  11. Sobolev seminorm of quadratic functions with applications to ...

    E-Print Network [OSTI]

    2013-03-15

    The author thanks Humboldt Fundation for the financial assistance during this visit, and he is much more than grateful to Professor Schittkowski for his warm...

  12. Numerical analysis of coupled wedge plasmons in a structure of two metal wedges separated by a gap

    E-Print Network [OSTI]

    Pile, DFP; Gramotnev, Dmitri K; Haraguchi, M; Okamoto, T; Fukui, M

    2006-01-01

    optical waveguides, interconnectors, and devices. For ex-waveguides and interconnectors are also discussed. II.waveguides and interconnectors for inte- grated optics. For

  13. Working Toward Social Change: Youth Researchers Using Discourse to Challenge Systemic Racism in Education

    E-Print Network [OSTI]

    Bertrand, Melanie A.

    2012-01-01

    in access to educational resources. These disparities arein my discussions of educational resources. I am grateful todirects poor-quality educational resources to Black and

  14. High channel density wavelength division multiplexer with defined diffracting means positioning

    DOE Patents [OSTI]

    Jannson, Tomasz P. (Redondo Beach, CA); Jannson, Joanna L. (Redondo Beach, CA); Yeung, Peter C. (Redondo Beach, CA)

    1990-01-01

    A wavelength division multiplexer/demultiplexer having optical path lengths between a fiber array and a Fourier transform lens, and between a dispersion grating and the lens equal to the focal length of the lens. The optical path lengths reduce losses due to angular acceptance mismatch in the multiplexer. Close orientation of the fiber array about the optical axis and the use of a holographic dispersion grating reduces other losses in the system. Multi-exposure holographic dispersion gratings enable the multiplexer/demultiplexer for extremely broad-band simultaneous transmission and reflection operation. Individual Bragg plane sets recorded in the grating are dedicated to and operate efficiently on discrete wavelength ranges.

  15. A Better Way to Probe Biological Polymorphs | Advanced Photon...

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

    Composite Battery Boost Water-Like Properties of Soft Nanoparticle Suspensions Real-Time Capture of Intermediates in Enzymatic Reactions A New Multilayer-Based Grating for Hard...

  16. Safe end treatments for roadside drainage culverts

    E-Print Network [OSTI]

    Jackson, Benito

    1980-01-01

    Setup . 16 Wheel Hub and Car Displacement vs. Time for Clear Plate Opening Run, Test 1, 25 mph, 1974 Honda Civic 21 23 24 X1 LIST OF FIGURES (cont. ) Ficiure 17 Concrete Drainage Culvert with Safety Grate 18 Test Pit Setup for Simulation... several questions concerning cross-drainage culverts and the use of safety grates. For example: How big in d1ameter does a culvert have to be before a safety grate 1s required? What is the max1mum spacing of bars in a grate such that a passenger car...

  17. Viseoolastio effective rheologies for modelling

    E-Print Network [OSTI]

    This work was supported in part by Norsl: Hydro Hergcn. Discussions with Horis. Gurevich are gratefully acknowledged. 3'3 l'tl'tli? European Association of...

  18. NIF & PS People - 2014

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

    Marilyn Schneider, Raymond Smith, Jue Wang, Morris Wang, Klaus Widmann and Christoph Wild. Award-Winning EXUDE Team Improvements in grating performance and implementation in a...

  19. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    The maximum counting rate achieves more than 2 x 106 X-raysspixel. January 2007 Passive Spectroscopy Bolometers, Grating- And X-ray Imaging Crystal Spectrometers Bitter, M....

  20. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Doppler widths and shifts. The data analysis techniqu Full Text Available March 2009 Passive Spectroscopy Bolometers, Grating- And X-Ray Imaging Crystal Spectrometers Bitter, M ;...

  1. Experimental comparison of navigation in a Galois lattice with conventional information retrieval methods

    E-Print Network [OSTI]

    Godin, Robert

    -L032) and DARPA-ISO via Rome Labs (contract number F30602-98-2-0137), which is gratefully acknowledged

  2. Mathematical Models for Multi Container Loading Problems 1 ...

    E-Print Network [OSTI]

    2015-05-12

    Valdes gratefully acknowledge partial financial support by the Spanish Ministry of Science and. Technology, DPI2011-24977, by Project PPII-2014-011-A,...

  3. MODELING PACKAGED HEAT PUMPS IN A QUASI-STEADY STATE ENERGY

    E-Print Network [OSTI]

    of Energy and advice from the EnergyPlus development team are gratefully acknowledged. #12;iv TABLE ........................................................... 6 2.1.1 EnergyPlus Model

  4. BPA Administrator Steve Wright announces January 2013 retirement

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

    Energy," said Deputy Secretary Poneman. "I am grateful for his strategic vision, creative problem solving, professionalism and dedication. Wright retains my full confidence and...

  5. Sren Asmussen Applied Probability and Queues

    E-Print Network [OSTI]

    Asmussen, Sren

    in case, the list is available at http://home.imf.au.dk/asmus/books/apqped.ps and I am of course grate

  6. Evolving opportunities for providing thermal comfort

    E-Print Network [OSTI]

    Brager, Gail; Zhang, Hui; Arens, Edward

    2015-01-01

    for thermal comfort and energy savings. Master of Scienceprevent good building energy Performance Inte- gratedACEEE Summer Study on Energy Efficiency in Buildings, Arens,

  7. President Obama Announces More Key Administration Posts | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Panel President Obama said, "These men and women have demonstrated knowledge and dedication throughout their careers. I am grateful they have chosen to take on these important...

  8. Ultrastructural study of thecal morphology and asexual reproduction of the "caudata" group of the marine dinoflagellate Dinophysis

    E-Print Network [OSTI]

    Stamman, Elaine

    1976-01-01

    , the morphology of the sulcal plates, and the internal topography of the plates are new data for the species. The topography of cell division in both species is studied using the SEN. In preparation for fission, the cell increases its girth by depositing a..., Ornithocercus. He (1973) also describes the topography of cell division in this ornate tropical species. Tai and Skogsberg (1934) describe asexual reproduction in ~pino sis as hi ary fission. Loehlich (1969) lists the sensual dirision of ~nina h sis as his...

  9. Not. Astron. doi:10.1111/j.13652966.2005.09664.x An Xray emissionline spectrum of Nova V382 Velorum 1999

    E-Print Network [OSTI]

    Ness, Jan-Uwe

    X­ray grating spectrum Classical Nova V382 (1999), obtained with Low Energy Transmission Grating), of cataclysmic variables (CVs), thought to be thermonuclear explosions induced on surface of white dwarfs of hydrogen­rich fuel causes thermonuclear runaway (TNR). tensive modelling of been carried past Starrfield

  10. Test surfaces useful for calibration of surface profilometers

    SciTech Connect (OSTI)

    Yashchuk, Valeriy V; McKinney, Wayne R; Takacs, Peter Z

    2013-12-31

    The present invention provides for test surfaces and methods for calibration of surface profilometers, including interferometric and atomic force microscopes. Calibration is performed using a specially designed test surface, or the Binary Pseudo-random (BPR) grating (array). Utilizing the BPR grating (array) to measure the power spectral density (PSD) spectrum, the profilometer is calibrated by determining the instrumental modulation transfer.

  11. Q-switching an all-fiber laser using acousto-optic null coupler Yuval Berg Sharone Goldring Shaul Pearl

    E-Print Network [OSTI]

    Arie, Ady

    coupler with acoustically induced long period grating (LPG) for frequency shifting, spectral filtering an all-fiber optical switch based on acoustically induced long period grating (LPG) on the so called, if an LPG is induced in the interaction zone, light can be coupled from the original fiber mode to the mode

  12. Pedestal free pulse compression in nonuniform fiber Bragg K. Senthilnathan and P. K. A. Wai,

    E-Print Network [OSTI]

    Wai, Ping-kong Alexander

    Pedestal free pulse compression in nonuniform fiber Bragg gratings K. Senthilnathan and P. K. A solitary pulses near photonic band gap of nonlinear fiber Bragg gratings with exponentially decreasing codes: (060.4370) Nonlinear optics, fibers, (140.3520) Pulse propagation and soliton, (320.5520) Pulse

  13. Fast amplitude and delay measurement for characterization of optical devices

    E-Print Network [OSTI]

    Thompson, Michael Thomas

    2006-10-30

    of the measured magnitude response of an Acetylene gas cell and comparing it to the integral of the measured group delay. The average deviation between the two methods is 0.1 radians. An Acetylene gas cell, fiber Bragg grating, and chirped Bragg grating are tested...

  14. TheChandraViewofRadiativeandKineticEnergyDissipationin Beyond Unification:An X-ray

    E-Print Network [OSTI]

    Evans, Dan

    the way in, so a disk is formed Frictional forces internal to the disc heat it up, causing it to radiate angular resolution (Transmission Gratings Spectrometers (HETG and LETG) XMM-Newton: Moderate Energy Transmission Gratings Spectrometer well suited Narrow core always attributed

  15. Evolution and Hydrodynamics of the Very-Broad X-ray Line Emission in SN1987A

    E-Print Network [OSTI]

    Dewey, Dan

    Observations of SN 1987A by the Chandra High Energy Transmission Grating (HETG) in 1999 and the XMM-Newton Reflection Grating Spectrometer (RGS) in 2003 show very broad (v-b) lines with a full width at half-maximum (FWHM) ...

  16. THE RCWA METHOD -A CASE STUDY WITH OPEN QUESTIONS AND PERSPECTIVES OF ALGEBRAIC COMPUTATIONS

    E-Print Network [OSTI]

    Strakos, Zdenek

    of fundamentals of the differential theory of gratings and several generalizations that can be applied to solving of successful generalization of the method to practical problems. Key words. Diffraction of electromagnetic of electromagnetic waves on periodic gratings. Among those, a specific role is played by the so called Rigorous

  17. Packed Bed Combustion: An Overview

    E-Print Network [OSTI]

    Hallett, William L.H.

    Packed Bed Combustion: An Overview William Hallett Dept. of Mechanical Engineering Universit d'Ottawa - University of Ottawa #12;Packed Bed Combustion - University of Ottawa - CICS 2005 Introduction air fuel feedproducts xbed grate Packed Bed Combustion: fairly large particles of solid fuel on a grate, air supplied

  18. Microfluidic design DOI: 10.1002/smll.200600211

    E-Print Network [OSTI]

    Prentiss, Mara

    Microfluidic design DOI: 10.1002/smll.200600211 Flowing Lattices of Bubbles as Tunable, Self demonstrate tunable, fluidic, two-dimensional diffraction gratings based on a microfluidic platform comprising with a wavelength of 632 nm. Keywords: bubbles diffraction gratings flow focusing microfluidics self

  19. CX-011107: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    High Efficiency Thin Film Fe2SiS4 and Fe2GeS4-based Cells Prepared from Low-Cost Solution CX(s) Applied: B3.6 Date: 08/12/2013 Location(s): Delaware Offices(s): Golden Field Office

  20. Cell Metabolism A Role for Brain-Specific Homeobox Factor

    E-Print Network [OSTI]

    intake and activity-induced thermogene- sis are important components of energy bal- ance regulation. The molecular mechanism underlying the coordination of food intake with locomotory behavior to maintain energy rebound hyperphagia. Furthermore, Bsx gene disruption rescues the obese pheno- type of leptin-deficient ob

  1. Etale Cohomology

    E-Print Network [OSTI]

    2012-11-25

    Nov 25, 2012 ... sis/topology. Given a compact Hausdorff space X, let C(X) denote the set .... limit, gives local behaviour of this sheaf near x. When X is a .... Page 14 ..... When X is a smooth curve defined over a field of characteristic p > 0, the.

  2. Multivortex micromixing: novel techniques using Dean flows for passive microfluidic mixing

    E-Print Network [OSTI]

    Sudarsan, Arjun Penubolu

    2007-04-25

    herringbone mixer SAR Split-and-recombine P-SAR Planar split-and-recombine ASM Asymmetric serpentine mixer PCB Printed circuit board DI Deionized SEBS Polystyrene?(polyethylene/polybutylene)?polystyrene SIS Polystyrene................................... 87 Concept ......................................................................................... 90 Flow visualization in a two-split microchannel........................ 92 Planar split-and-recombine mixer...

  3. The Auk 118(4):874887, 2001 A MOLECULAR PHYLOGENY OF THE DOVE GENERA

    E-Print Network [OSTI]

    Johnson, Kevin P.

    KEVIN P. JOHNSON,1,3,5 SELVINO DE KORT,2 KAREN DINWOODEY,3 A. C. MATEMAN,4 CAREL TEN CATE,2 C. M. 1995) and behavior (Lade and Thorpe 1964, Zenone et al. 1979, Cheng et al. 1981, Cheng 1992. Johnson and Clayton (2000a) showed that species of Old World Columba form the sis- ter group

  4. THE SHRIMP AND THE SHRIMP INDUSTRY OF THE SOUTHERN UNIT,ED STATES

    E-Print Network [OSTI]

    in the catches , yielding about 22 percent of the catch in t he Gulf of Mexico and about 45 percent along" was apparently derived. Sea bob is a corrupt i on of the French" sis barbes" or six beards, the name given

  5. The roles of plant phenolics in defence and communication during Agrobacterium and Rhizobium infection

    E-Print Network [OSTI]

    Citovsky, Vitaly

    of the most ubiquitous groups of secondary metabolites found throughout the plant kingdom (Boudet, 2007 by plants mainly for protection against stress. The functions of phenolic compounds in plant physiology in plant development, particularly in lignin and pigment biosynthe- sis.They also provide structural

  6. NATIONAL RADIO ASTRONOMY OBSERVATORY CHARLOTTESVILLE, VIRGINIA

    E-Print Network [OSTI]

    Groppi, Christopher

    of an SIS detector receiver. The results are summarized in the NEP d column of Table I. In general sensitivity, AT (which is proportional to minimum detectable flux, Smin = 2kAT/nA) gives: 2NEP ATd - \\ 2 kB 2 factor in the denominator arises because AT is for one second integration while NEP is for 1 Hz video

  7. FORTRAN M AS A LANGUAGE FOR BUILDING EARTH SYSTEM MODELS \\Lambda

    E-Print Network [OSTI]

    FORTRAN M AS A LANGUAGE FOR BUILDING EARTH SYSTEM MODELS \\Lambda Ian Foster Mathematics as a tool for building earth system models on massively parallel computers. I hypothesize that the use to investigate this hypothe sis. 2. Earth System Models An earth system model is a computer code designed

  8. Exploiting the Deep Web with DynaBot: Matching, Probing, and Ranking

    E-Print Network [OSTI]

    Caverlee, James

    Exploiting the Deep Web with DynaBot: Matching, Probing, and Ranking Daniel Rocco University, CA, USA critchlow1@llnl.gov ABSTRACT We present the design of Dynabot, a guided Deep Web discovery system. Dynabot's modular architecture sup- ports focused crawling of the Deep Web with an empha- sis

  9. Effects of dietary cholesterol on hepatic metabolism of triglyceride-rich lipopro-

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Effects of dietary cholesterol on hepatic metabolism of triglyceride-rich lipopro- teins disorders of fatty acid metabolism may occur and lead to steato- sis. Steatosis could result from a limited collected 7 h after the morning meal. Plasma li- poproteins were separated by isopycnic density gradient

  10. Temperature-dependent luminescence of Ce3+ in gallium-substituted

    E-Print Network [OSTI]

    Walker, D. Greg

    were prepared via a simple combustion synthe- sis method and had the formula Y2.97Ce0.03 3 Al1-xGax 5O width of 0.1 nm. The pulse width was 4ns at a characteristic energy of 300 J. The excitation pulse

  11. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 7, No. 2, JUNE 1997 3564 Fabrication of High-Tc Hot-Electron Bolometric Mixers for Terahertz

    E-Print Network [OSTI]

    Burns, Michael J.

    receivers based on superconductor-insulator- superconductor (SIS) junctions are used in submillimeterIEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 7, No. 2, JUNE 1997 3564 Fabrication of High Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA Abstract Superconducting

  12. Growing carbon nanotubes by microwave plasma-enhanced chemical vapor deposition

    E-Print Network [OSTI]

    Qin, Lu-Chang

    the most studied nanoma- terial for the past few years. Mechanical measurement of the axial Young's modulus, such as laser evaporation;11,12 pyroly- sis of hydrocarbon gases using benzene (C6H6),13 acetylene (C2H2

  13. NSF GRANT #DMI-0534862 NSF PROGRAM NAME: Small Grants for Exploratory Research

    E-Print Network [OSTI]

    Ralphs, Ted

    are required to take on values in a discrete set. Such math- ematical models arise in a wide variety of applications, such as supply chain optimization, portfolio optimization, production and logistics problems facto solution analysis, is the ba- sis for procedures such as column generation and reduced cost fixing

  14. Automated Decision-Analytic Diagnosis of Thermal Performance in Gas Turbines

    E-Print Network [OSTI]

    Horvitz, Eric

    Automated Decision-Analytic Diagnosis of Thermal Performance in Gas Turbines To be presented Abstract We have developed an expert system for diagno- sis of efficiency problems for large gas turbines the ultimate goal of applying the system in the day-to-day maintenance of gas- turbine power plants. A Overview

  15. El sistema de traducci on autom atica castellano$catal an

    E-Print Network [OSTI]

    Forcada, Mikel L.

    a documentos en catal#19;an a las personas no catalanohablan- tes de Espa~na o de Am#19;erica Latina. El sis m#19;as importan- tes de Espa~na, utilizan un prototipo del pro- grama desde hace dos a~nos; existe

  16. El sistema de traduccion automatica castellanocatalan

    E-Print Network [OSTI]

    Forcada, Mikel L.

    no catalanohablan- tes de Espa~na o de Am´erica Latina. El sis- tema interNOSTRUM todav´ia se esta desa- rrollando y´aneo (CAM), una de las cajas de ahorros m´as importan- tes de Espa~na, utilizan un prototipo del pro- grama

  17. A N U A R I O C I N V E S T A V 149 CONTROLAUTOMTICO

    E-Print Network [OSTI]

    , robots y sistemas de manufactura, todo tipo de dispositivos mecatrnicos, procesos agrcolas, sis- temas esencial es lograr la operacin de procesos que cumplan con ciertas especificaciones de funcionamiento est presente en una infinidad de procesos y sistemas como reactores qumicos, reactores biolgicos

  18. IEEE MICROWAVE AND GUIDED WAVE LETTERS, VOL. 9, NO. 11, NOVEMBER 1999 467 A 530-GHz Balanced Mixer

    E-Print Network [OSTI]

    IEEE MICROWAVE AND GUIDED WAVE LETTERS, VOL. 9, NO. 11, NOVEMBER 1999 467 A 530-GHz Balanced Mixer Goutam Chattopadhyay, Student Member, IEEE, Frank Rice, David Miller, Henry G. LeDuc, and Jonas Zmuidzinas, Member, IEEE Abstract-- We report on the design and performance of a 530-GHz balanced SIS mixer

  19. sSCADA: Securing SCADA Infrastructure Communications Yongge Wang and Bei-Tseng Chu

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    sSCADA: Securing SCADA Infrastructure Communications Yongge Wang and Bei-Tseng Chu Dept. of SIS control systems (DCS) and supervisory control and data acquisition (SCADA) systems were developed. This paper presents a suite of security protocols optimized for SCADA/DCS systems which include: point

  20. Undergraduate Advising Syllabus 2014-2015 Computer Science Department

    E-Print Network [OSTI]

    Salvaggio, Carl

    @cs.rit.edu Advising Model: A professional academic advisor has been assigned to you based on the first letter of your System (SIS). The CS advisors hold walk in hours during the week where you can swing by and get@cs.rit.edu www.cs.rit.edu Advisors: Rebecca O'Connor Mina Pulcini Christina Rohr Academic Advisor Senior Academic

  1. BOOK REVIEW Cold War Social Science: Knowledge Production,

    E-Print Network [OSTI]

    Solovey, Mark

    BOOK REVIEW Cold War Social Science: Knowledge Production, Liberal Democracy, and Human Nature institutionalism in economics to post- war neoclassicism, with its physics-like empha- sis on mathematical theory to such existing narrative frameworks by adopting cross-cutting lenses like the "Cold War" and the working

  2. University of Ljubljana Faculty of Mathematics and Physics

    E-Print Network [OSTI]

    ?umer, Slobodan

    densities and to understand the conditions before nucleosynthe- sis actualy began. The production of light statistical equlibrium 2 3 Production of the light elements 3 3.1 Step 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.2.2 Helium-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.2.3 Lithium-7

  3. Reprinted from Proceedings of the Ninth National Conference on Artificial Intelligence (AAAI-91), July, 1991, pp. 698703. Preferential Semantics for Goals

    E-Print Network [OSTI]

    Reeves, Douglas S.

    conceived in AI planning, provide an insufficient basis for choice of action, and hence are deficient as the sole expression of an agent's objectives. Decision-theoretic utilities offer a more adequate ba- sis performed in planning. This semantic account pro- vides a criterion for verifying the design of goal

  4. Enhanced Performance of Micro-Electro-Mechanical-Systems (MEMS) Microbial

    E-Print Network [OSTI]

    Cincinnati, University of

    the energy-climate cri- sis and environmental pollution, microbial fuel cells (MFCs) are a major focusEnhanced Performance of Micro-Electro- Mechanical-Systems (MEMS) Microbial Fuel Cells Using as a potential source for renewable energy production. A MFC can transform the chemical energy of bio- degradable

  5. LETTER doi:10.1038/nature09584 mTORC1 controls fasting-induced ketogenesis and

    E-Print Network [OSTI]

    Sabatini, David M.

    LETTER doi:10.1038/nature09584 mTORC1 controls fasting-induced ketogenesis and its modulation. In fasted animals, the liver performsnumerousfunctionsthatmaintainwhole-bodyhomeosta- sis, including), an mTORC1 inhibitor1 , leads to a fasting-resistant increase in liver size, and to a pronounced defect

  6. KU Today, February 25, 2013

    E-Print Network [OSTI]

    @kualumni Did you watch the Oscars? Disney's Paperman, featuring Kari Wahlgren, c'99, won best animated short: ow.ly/i1DNY #kualumni View all tweets FEATURED MULTIMEDIA SCHOOL OF ENGINEERING CReSIS featured at Science Nation More: photos...

  7. Semantic Web Pascal Hitzler

    E-Print Network [OSTI]

    Hitzler, Pascal

    Chapter 1 Semantic Web Pascal Hitzler Kno.e.sis Center, Wright State University, Dayton, OH, USA 1.1.1 Languages for Representing Knowledge on the Web ............................. 2 1.1.2 Formal the Semantic Web Vision ................................ 4 1.1.4 Linked Data

  8. Projective ML Didier Remy

    E-Print Network [OSTI]

    Rémy, Didier

    Projective ML Didier Remy INRIA-Rocquencourt Apr 10, 1992 Abstract We propose a projective lambda calculus as the ba- sis for operations on records. Projections operate on elevations, that is, records projective ML from this calculus by adding the ML Let typing rule to the simply typed projective calculus. We

  9. Formation of single-domain anatase TiO2,,001...-,,14... islands on SrTiO3,,001... after thermal annealing

    E-Print Network [OSTI]

    Castell, Martin

    studied as a promising material for applications in sensors, photocataly- sis, solar energy conversion annealing Fabien Sillya) and Martin R. Castellb) Department of Materials, University of Oxford, Parks Road these materials are strongly dependent on the nature of the TiO2 surfaces and its nano- structures

  10. Interactions and Dynamics in ChargeStabilized Colloid John C. Crocker

    E-Print Network [OSTI]

    Grier, David

    static stabilization in colloidal suspensions. The empha sis here is on the approximations which haveInteractions and Dynamics in ChargeStabilized Colloid John C. Crocker Department of Physics make about colloidal suspensions is that the exist at all. Parti cles dispersed in a fluid medium have

  11. Upon his retirement, a symposium in celebration of the career of Professor Morton M. Denn

    E-Print Network [OSTI]

    Sun, Yi

    of the permeability/selectivity upper bound in gas separation membranes, a concept that has since been extended a variety of gas and liquid membrane separation technologies. How the mentoring provided by Professor Denn to many other membrane separations, including desalination, forward osmo- sis, and ultrafiltration. My

  12. SEEING THE COMMUNITY FOR THE TREES: ASSESSING LOCALLY-DEVELOPED

    E-Print Network [OSTI]

    project performance (in terms of sustainability) and increase participation at the evaluation stage `top-down' approach to develop indicators as tools to assess sustainability. I assessed performance of the indicator sets against the Sustainability Indicators Standard (SIS). Locally-developed indicators perform

  13. FY 2015 OFFICE OF BUDGET & FINANCE STRATEGIC PLAN Strategic Plan Items & Projects

    E-Print Network [OSTI]

    O'Toole, Alice J.

    .2.4. Implement Activity Guide Functionality in SIS 3.3. Improve Processes and Systems 3.3.1. Deliver the ProjectsFY 2015 OFFICE OF BUDGET & FINANCE STRATEGIC PLAN Strategic Plan Items & Projects 1.0. OPERATIONAL Policies and SAPs 1.1.2. Expand Utilization and Effectiveness of askYODA 1.1.3. Implement Continuous

  14. In 1963,two publications appeared that focused atten-tion on the adhesive mechanisms that contribute to

    E-Print Network [OSTI]

    Ikura, Mitsuhiko

    REVIEWS In 1963,two publications appeared that focused atten- tion on the adhesive mechanisms.Malcolm Steinberg laid the groundwork for the`differential adhesion hypothe- sis', suggesting that the segregation or quantitative differences in cell adhesion1 . Roger Sperry proposed the`chemoaffinity hypothesis', which holds

  15. A CGCM Study on the Northward Propagation of Tropical Intraseasonal Oscillation over the Asian Summer Monsoon Regions

    E-Print Network [OSTI]

    Weng, Shu-Ping; Yu, Jin-Yi

    2010-01-01

    M. J. , 1999: Gen e sis and evo lu tion of the 1997-98 Elserved and sim u lated EVS evo lu - tions in three CGCM exTISO (a) (b) (c) (d) Fig. 2. Evo lu tions of the first EEOF

  16. Information Engineering for the Development of Spatial Information Systems: a Research Agenda

    E-Print Network [OSTI]

    Spatial Information Systems (SIS) involves much more than technology. It also involves the coordinationInformation Engineering for the Development of Spatial Information Systems: a Research Agenda Y. Bdard Proceedings of the 27th Annual Conference of the Urban and Regional Information Systems

  17. Linearization using Digital Predistortion of a High-Speed, Pulsed, Radio Frequency Power Amplifier for VHF Radar Depth-Sounder Systems

    E-Print Network [OSTI]

    Player, Kevin

    2010-03-29

    and dangerous. Thus, CReSIS is developing uninhabited aerial vehicles (UAVs) from which fine-resolution measurements can be made over vast areas. These fine-resolution measurements require highly linear power amplifiers (PAs) to create low range side-lobe levels...

  18. Statistical Modeling of Spot Instance Prices in Public Cloud Environments

    E-Print Network [OSTI]

    Buyya, Rajkumar

    Statistical Modeling of Spot Instance Prices in Public Cloud Environments Bahman Javadi, Ruppa K resources has introduced many trade-offs between price, per- formance and recently reliability. Amazon's Spot Instances (SIs) create a competitive bidding option for the public Cloud users at lower prices

  19. A Hybrid Feedback Regulator Approach to Control an Automotive Suspension System

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    A Hybrid Feedback Regulator Approach to Control an Automotive Suspension System Xenofon D synthe- sis approach using an automotive suspension system. Discrete abstrac- tions are used control synthesis is presented and an example of an automotive suspension system is used to illus- trate

  20. Automated DecisionAnalytic Diagnosis of Thermal Performance in Gas Turbines

    E-Print Network [OSTI]

    Horvitz, Eric

    Automated DecisionAnalytic Diagnosis of Thermal Performance in Gas Turbines To be presented Abstract We have developed an expert system for diagno sis of e#ciency problems for large gas turbines the ultimate goal of applying the system in the daytoday maintenance of gas turbine power plants. A Overview

  1. Ao IV, Vol. II. Julio -Diciembre 2012 Columnas Komputer Sapiens 29 / 32 Deskubriendo Konocimiento

    E-Print Network [OSTI]

    Grimaldo, Francisco

    la teoria de sis- temas y del funcionalismo estructu- ral, la simulacion por computador se ha usadoon conducen a establecer un cla- ro paralelismo con la teoria de los sistemas complejos. Por ultimo, co- mo social y las normas, y destacan el valor explica- tivo de las estructuras sociales y el comportamiento

  2. Burst Mode Message Loss Effects On WAAS Availability

    E-Print Network [OSTI]

    Stanford University

    Burst Mode Message Loss Effects On WAAS Availability Richard Fuller, Todd Walter, Per Enge, the satellite ranging-source increases the percentage of time that the precise signal is available. In this way, availability, and continuity. The WAAS Signal-In-Space (SIS) has a limited data message bandwidth of 250 bits

  3. Retinoic Acid Induction of Nuclear Envelope-Limited Chromatin Sheets in HL-60

    E-Print Network [OSTI]

    Olins, Ada L.

    vitamin D3, sodium butyrate, and 12-O-tetradecanoylphorbol-13-acetate (TPA) promote monocyticRetinoic Acid Induction of Nuclear Envelope-Limited Chromatin Sheets in HL-60 Ada L. Olins leukemic cell line (HL-60) to 1 M retinoic acid (RA) induces in vitro granulopoie- sis, including

  4. AN INTEGRATED ENVIRONMENT OF S/W SPECIFICATION AND V&V FOR SAFETY-CRITICAL SYSTEMS

    E-Print Network [OSTI]

    AN INTEGRATED ENVIRONMENT OF S/W SPECIFICATION AND V&V FOR SAFETY-CRITICAL SYSTEMS Abstract, an integrated environment of S/W specification and V&V is proposed for safety-critical systems. Integrated environment consists of SIS-RT for concept phase, NuSRS for requirement phase, NuSDS for design phase, and Nu

  5. Courses: Geology (GEOL) Page 325Sonoma State University 2014-2015 Catalog Geology (GEOL)

    E-Print Network [OSTI]

    Ravikumar, B.

    Courses: Geology (GEOL) Page 325Sonoma State University 2014-2015 Catalog Geology (GEOL) geoL 102 our dynAMiC eArtH: introduCtion to geoLogy (3) Lecture, 2 hours; laboratory, 3 hours. A study. Empha- sis on local geology, including earthquakes and other environmental aspects. Labo- ratory study

  6. Measurements and material accounting

    SciTech Connect (OSTI)

    Hammond, G.A. )

    1989-11-01

    The DOE role for the NBL in safeguarding nuclear material into the 21st century is discussed. Development of measurement technology and reference materials supporting requirements of SDI, SIS, AVLIS, pyrochemical reprocessing, fusion, waste storage, plant modernization program, and improved tritium accounting are some of the suggested examples.

  7. Laser programs highlights, July--August 1990

    SciTech Connect (OSTI)

    Not Available

    1990-01-01

    Laser research at LLNL is divided into five major programmatic areas: inertial confinement fusion (ICF), uranium atomic vapor laser isotope separation (U-AVLIS), special (plutonium) isotope separation (SIS), laser technology, and advanced applications. We have made important progress this past year in each of these areas. This report covers the current state of these 5 areas.

  8. Environmental assessment: special isotope separation process selection

    SciTech Connect (OSTI)

    Not Available

    1986-04-01

    This Environmental Assessment (EA) evaluates the differences in potential environmental impacts between two plutonium Special Isotope Separation (SIS) technologies: Atomic Vapor Laser Isotope Separation (AVLIS) and Molecular Laser Isotope Separation (MLIS). Both SIS technologies use PuO/sub 2/ as feed; AVLIS converts feed to plutonium metal and MLIS converts feed to PuF/sub 6/. The AVLIS process uses laser energy to selectively photoionize and electrostatically separate plutonium isotopes from an atomic vapor stream. The MLIS process uses laser energy to selectively disassociate specific isotopes of plutonium in the form of PuF/sub 6/ molecules to create PuF/sub 5/ for collection and further processing. Both processes produce plutonium metal as their product. An evaluation of differences in potential environmental impacts attributed to the construction of an SIS facility, based on either technology, included a comparison of construction materials, land areas required, and the size of the design and construction workforce. The differences in potential environmental impacts from operating an SIS facility were also compared. No large differences in potential environmental impacts would be expected from the use of process chemicals. An AVLIS or an MLIS facility would produce operating effluents that would meet all applicable radiation, chemical, and hazardous waste standards and would be constructed to protect workers, the public and the environment. This EA has not revealed any significant differences in the potential environmental impacts that could occur as a result of deploying either the AVLIS or the MLIS Special Isotope Separation technology.

  9. I. A1,3-Strain Enabled Retention of Chirality During Bis-Cyclization of ?-Ketoamides: Asymmetric Synthesis and Bioactivity of Salinosporamide A and Derivatives II. Optimization of an Organic Syntheses: Asymmetric Nucleophile-Catalyzed Aldol- Lactonization of Aldehyde Acids

    E-Print Network [OSTI]

    Nguyen, Henry

    2010-11-17

    .2.4. Hatakeyama ? s Enantiosel e c t i v e Sy nthe sis of (?)-1.1a Hatakeyama?s synthesis of ( ? )-1.1a 6h began with propargyl alcohol 1.37 by a palladium mediated addition to an acetal dehyde derivative to give ether 1.38 . The PMB protection group...

  10. 3D Bone Microarchitecture Modeling and Fracture Risk Department of Computer

    E-Print Network [OSTI]

    Buffalo, State University of New York

    3D Bone Microarchitecture Modeling and Fracture Risk Prediction Hui Li Department of Computer will also rise. It calls for innovative research on understanding of osteoporo- sis and fracture mechanisms-of-the-art probabilistic approach to analyze bone fracture risk factors including demographic attributes and life styles

  11. Molecular Cell 23, 112, July 7, 2006 2006 Elsevier Inc. DOI 10.1016/j.molcel.2006.06.008 ReviewDivergence from a Dedicated

    E-Print Network [OSTI]

    Divergence from a Dedicated Cellular Suicide Mechanism: Exploring the Evolution of Cell Death Junying Yuan1, * 1 in the nematode C. ele- gans is controlled by a simple and dedicated genetic program. This genetic program. elegans cell death gene products continue to regulate apopto- sis, they are no longer dedicated regulators

  12. High-efficiency spectral purity filter for EUV lithography

    DOE Patents [OSTI]

    Chapman, Henry N. (Livermore, CA)

    2006-05-23

    An asymmetric-cut multilayer diffracts EUV light. A multilayer cut at an angle has the same properties as a blazed grating, and has been demonstrated to have near-perfect performance. Instead of having to nano-fabricate a grating structure with imperfections no greater than several tens of nanometers, a thick multilayer is grown on a substrate and then cut at an inclined angle using coarse and inexpensive methods. Effective grating periods can be produced this way that are 10 to 100 times smaller than those produced today, and the diffraction efficiency of these asymmetric multilayers is higher than conventional gratings. Besides their ease of manufacture, the use of an asymmetric multilayer as a spectral purity filter does not require that the design of an EUV optical system be modified in any way, unlike the proposed use of blazed gratings for such systems.

  13. Imaging spectrometer wide field catadioptric design

    DOE Patents [OSTI]

    Chrisp; Michael P. (Danville, CA)

    2008-08-19

    A wide field catadioptric imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The catadioptric design has zero Petzval field curvature. The imaging spectrometer comprises an entrance slit for transmitting light, a system with a catadioptric lens and a dioptric lens for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the system for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the system for receiving the light and the system for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light through the system for receiving the light to the detector array.

  14. Instrument and method for focusing x rays, gamma rays, and neutrons

    DOE Patents [OSTI]

    Smither, R.K.

    1982-03-25

    A crystal-diffraction instrument or diffraction-grating instrument is described with an improved crystalline structure or grating spacing structure having a face for receiving a beam of photons or neutrons and diffraction planar spacing or grating spacing along that face with the spacing increasing progressively along the face to provide a decreasing Bragg diffraction angle for a monochromatic radiation and thereby increasing the usable area and acceptance angle. The increased planar spacing for the diffraction crystal is provided by the use of a temperature differential across the line structures with different compositions, by an individual crystalline structure with a varying composition and thereby a changing planar spacing along its face, and by combinations of these techniques. The increased diffraction grating element spacing is generated during the fabrication of the diffraction grating by controlling the cutting tool that is cutting the grooves or controlling the laser beam, electron beam, or ion beam that is exposing the resist layer, etc. It is also possible to vary this variation in grating spacing by applying a thermal gradient to the diffraction grating in much the same manner as is done in the crystal-diffraction case.

  15. Direct detector for terahertz radiation

    DOE Patents [OSTI]

    Wanke, Michael C. (Albuquerque, NM); Lee, Mark (Albuquerque, NM); Shaner, Eric A. (Albuquerque, NM); Allen, S. James (Santa Barbara, CA)

    2008-09-02

    A direct detector for terahertz radiation comprises a grating-gated field-effect transistor with one or more quantum wells that provide a two-dimensional electron gas in the channel region. The grating gate can be a split-grating gate having at least one finger that can be individually biased. Biasing an individual finger of the split-grating gate to near pinch-off greatly increases the detector's resonant response magnitude over prior QW FET detectors while maintaining frequency selectivity. The split-grating-gated QW FET shows a tunable resonant plasmon response to FIR radiation that makes possible an electrically sweepable spectrometer-on-a-chip with no moving mechanical optical parts. Further, the narrow spectral response and signal-to-noise are adequate for use of the split-grating-gated QW FET in a passive, multispectral terahertz imaging system. The detector can be operated in a photoconductive or a photovoltaic mode. Other embodiments include uniform front and back gates to independently vary the carrier densities in the channel region, a thinned substrate to increase bolometric responsivity, and a resistive shunt to connect the fingers of the grating gate in parallel and provide a uniform gate-channel voltage along the length of the channel to increase the responsivity and improve the spectral resolution.

  16. Non-plugging pressure tap

    DOE Patents [OSTI]

    Echtler, Joseph P. (Pittsburgh, PA)

    1978-01-01

    A pressure tap having utility in an environment of a solid-gas phase process flow includes a tubular coupling part having attached over a passage therethrough at an end opening thereof exposed to the flow a grating of spaced bars, and affixed internally across a passage therethrough so as to cover over an opening therein a screen which maintains contained within the passage between it and the grating a matrix of smooth spheres. The grating bars are so oriented by the disposition of the aforesaid end opening with respect to the flow such that accumulations of solids therebetween tending to bridge the opening are removed therefrom by the flow.

  17. Multi-channel polarized thermal emitter

    DOE Patents [OSTI]

    Lee, Jae-Hwang; Ho, Kai-Ming; Constant, Kristen P

    2013-07-16

    A multi-channel polarized thermal emitter (PTE) is presented. The multi-channel PTE can emit polarized thermal radiation without using a polarizer at normal emergence. The multi-channel PTE consists of two layers of metallic gratings on a monolithic and homogeneous metallic plate. It can be fabricated by a low-cost soft lithography technique called two-polymer microtransfer molding. The spectral positions of the mid-infrared (MIR) radiation peaks can be tuned by changing the periodicity of the gratings and the spectral separation between peaks are tuned by changing the mutual angle between the orientations of the two gratings.

  18. Study of optical Laue diffraction

    SciTech Connect (OSTI)

    Chakravarthy, Giridhar, E-mail: cgiridhar84@gmail.com, E-mail: aloksharan@email.com; Allam, Srinivasa Rao, E-mail: cgiridhar84@gmail.com, E-mail: aloksharan@email.com; Satyanarayana, S. V. M., E-mail: cgiridhar84@gmail.com, E-mail: aloksharan@email.com; Sharan, Alok, E-mail: cgiridhar84@gmail.com, E-mail: aloksharan@email.com [Department of Physics, Pondicherry University, Puducherry-605014 (India)

    2014-10-15

    We present the study of the optical diffraction pattern of one and two-dimensional gratings with defects, designed using desktop pc and printed on OHP sheet using laser printer. Gratings so prepared, using novel low cost technique provides good visual aid in teaching. Diffraction pattern of the monochromatic light (632.8nm) from the grating so designed is similar to that of x-ray diffraction pattern of crystal lattice with point defects in one and two-dimensions. Here both optical and x-ray diffractions are Fraunhofer. The information about the crystalline lattice structure and the defect size can be known.

  19. Dispersion-compensated fresnel lens

    DOE Patents [OSTI]

    Johnson, Kenneth C. (1215 Brewster Dr., El Cerrito, CA 94530)

    1992-01-01

    A transmission grating is used to reduce chromatic aberration in a Fresnel lens, wherein the lens chromatic dispersion is offset and substantially canceled by the grating's diffraction-induced dispersion. The grating comprises a Fresnel-type pattern of microscopic facets molded directly into the lens surface. The facets would typically have a profile height of around 4.multidot.10.sup.-5 inch and a profile width of at least 10.sup.-3 inch. In its primary intended application, the invention would function to improve the optical performance of a Fresnel lens used to concentrate direct sunlight.

  20. Radiative heat transfer between two dielectric nanogratings in the scattering approach

    E-Print Network [OSTI]

    J. Lussange; R. Gurout; F. S. S. Rosa; J. -J. Greffet; A. Lambrecht; S. Reynaud

    2012-06-01

    We present a theoretical study of radiative heat transfer between dielectric nanogratings in the scattering approach. As a comparision with these exact results, we also evaluate the domain of validity of Derjaguin's Proximity Approximation (PA). We consider a system of two corrugated silica plates with various grating geometries, separation distances, and lateral displacement of the plates with respect to one another. Numerical computations show that while the PA is a good approximation for aligned gratings, it cannot be used when the gratings are laterally displaced. We illustrate this by a thermal modulator device for nanosystems based on such a displacement.

  1. Dispersion-compensated Fresnel lens

    DOE Patents [OSTI]

    Johnson, K.C.

    1992-11-03

    A transmission grating is used to reduce chromatic aberration in a Fresnel lens, wherein the lens chromatic dispersion is offset and substantially canceled by the grating's diffraction-induced dispersion. The grating comprises a Fresnel-type pattern of microscopic facets molded directly into the lens surface. The facets would typically have a profile height of around 4[times]10[sup [minus]5] inch and a profile width of at least 10[sup [minus]3] inch. In its primary intended application, the invention would function to improve the optical performance of a Fresnel lens used to concentrate direct sunlight. 10 figs.

  2. Basal area growth response to competition among improved families of loblolly pine (Pinus taeda L.) in a 20-year-old row plot progeny trial

    E-Print Network [OSTI]

    Lee, Joel Talbot

    1989-01-01

    of competition. J Inst Polytech, Osaka City Univ, Ser D7:15-34. 39 Land, S. B. , and W. L. Nance. 1987. APA: a useful tool for analysis of progeny tests. 19th South Forest Tree Improv Conf Proc, College Station, TX. pp. 300-311. Moore, J. A. , C. A.... , and C. F. Bey. 1979. Incorporating genetic information in growth and yield models. 15th South Forest Tree Improv Conf Proc, Starkville, MS. pp. 140-148. Nance, W. L. , S. B. Land Jr. , and R. F. Daniels. 1983. Concepts for analys1s of intergenotypic...

  3. Juniper invasion and community development in the Post Oak Savanna of Texas

    E-Print Network [OSTI]

    Cook, Terry Lee

    1986-01-01

    with and without a live post oak center tree. 32 Table 8: Correlat1ons between redcedar variables and live center tree va ri ah 1 ss 33 Table 9: Data used to construct regress1on model to estimate redcedar ages 35 Table 10: Regression analys1s results...J UNIPER INVASION AND COMMUNITY DEVELOPMENT IN THE POST OAK SAVANNA OF TEXAS A Thesis by TERRY LEE COOK Submitted to the Graduate College of Texas A8, M University in partial fulfillment of the requirements for the degree of MASTER...

  4. The use of milk progesterone assay as an aid to brood mare management

    E-Print Network [OSTI]

    Honey, Peter Geoffrey

    1980-01-01

    of th1s study strongly suggested that much of the infertil1ty 1n mares is due to fa1lure to breed mares in close synchrony with ovulat1on. Difficulty 1n interpretation of palpat1on findings and between mare var1ation in teas1ng results contr1buted... most to mares being bred at sub-optimal t1me. Analys1s of milk progesterone data disclosed these management problems. Two add1tional mares were mon1tored on days that breeding manage- ment decis1ons were made. Milk progesterone levels reflected...

  5. The determination of some anions using ion chromatography and ion chromatography-graphite furnace atomic absorption spectrometry

    E-Print Network [OSTI]

    Hillman, Daniel C

    1981-01-01

    with a fluoride ion selective electrode. The fluorine concentration in the Texas lignite core sample ranged from 50 to 95 ppm F. Ion chromatography alone was shown not to be useful in the deter- mination of selenite and selenate in natural water... Analys1s of Selenite and Selenate . Parameter s for IC-GFAA Analysis of Selen1te and Selenate 10 IV Coeffic1ents of the L1near Least Square Equations for Fluoride Cal1brat1on Curves 1n Figures 3, 4, and 5 (p. 14, 15, 16) Fluorine Determ1nat1on...

  6. Contrast enhancement behavior of hydrogen silsesquioxane in a salty developer

    E-Print Network [OSTI]

    Nam, Sung-Wook

    The authors investigated a contrast enhancement behavior of hydrogen silsesquioxane (HSQ) in a salty development system (NaOH/NaCl). Time-resolved analysis of contrast curves and line-grating patterns were carried out to ...

  7. IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 20, NO. 23, DECEMBER 1, 2008 1905 A Magnetically Actuated Resonant Mass Sensor With

    E-Print Network [OSTI]

    Alaca, B. Erdem

    of the resonating structure and the diffraction grating by electroplating of Ni, which also brings about motion. The typical surface roughness associated with the electroplating of Ni as the moving reflector

  8. PREDICTIVE YASIR: HIGH SECURITY WITH LOWER LATENCY IN LEGACY SCADA

    E-Print Network [OSTI]

    by Rouslan V. Solomakhin DARTMOUTH COLLEGE Hanover, New Hampshire June 2010 Dartmouth Computer Science and by the Department of Energy under Award Number DE-OE0000097. I am grateful to Paul Myrda of Electric Power Research

  9. Passive intrinsic-linewidth narrowing of ultraviolet extended-cavity diode laser by weak optical feedback

    E-Print Network [OSTI]

    Samutpraphoot, Polnop

    We present a simple method for narrowing the intrinsic Lorentzian linewidth of a commercial ultraviolet grating extended-cavity diode laser (TOPTICA DL Pro) using weak optical feedback from a long external cavity. We achieve ...

  10. MOLECULAR MODELING STUDY OF SULFATE AND PHOSPHATE ADSORPTION AT THE MINERAL-WATER INTERFACE

    E-Print Network [OSTI]

    Sparks, Donald L.

    at the risk of not knowing whether we'd be successful. Furthermore, Donald Sparks continually trusted in me dedicated advisor, a better work environment, or a mentor than Donald Sparks. I am forever grateful. I would

  11. Allocating Transmission to Mitigate Market Power in Electricity Networks

    E-Print Network [OSTI]

    Neuhoff, Karsten; Newbery, David; Gilbert, Richard

    2004-06-16

    42200034307) is gratefully acknowledged. Sidgwick Avenue, Cambridge CB3 9DE, England Phone 44 1223 335200, Fax 44 1223 335299 1 interconnector capacity has an additional advantage as it reduces local market power (Joskow and Schmalensee, 1983). In many...

  12. High channel density wavelength division multiplexer with defined diffracting means positioning

    DOE Patents [OSTI]

    Jannson, T.P.; Jannson, J.L.; Yeung, P.C.

    1990-05-15

    A wavelength division multiplexer/demultiplexer is disclosed having optical path lengths between a fiber array and a Fourier transform lens, and between a dispersion grating and the lens equal to the focal length of the lens. The optical path lengths reduce losses due to angular acceptance mismatch in the multiplexer. Close orientation of the fiber array about the optical axis and the use of a holographic dispersion grating reduces other losses in the system. Multi-exposure holographic dispersion gratings enable the multiplexer/demultiplexer for extremely broad-band simultaneous transmission and reflection operation. Individual Bragg plane sets recorded in the grating are dedicated to and operate efficiently on discrete wavelength ranges. 11 figs.

  13. Draft Closure Plan

    Office of Environmental Management (EM)

    the metal grates, which prevent contact with liquids that may have accumulated in the sumps. The interior of each shed and sump is coated with chemically-resistant epoxy paint....

  14. Ted Belytschko 1943 -2014 It is with deep regret and sorrow that we hear the sad

    E-Print Network [OSTI]

    Ottino, Julio M.

    of computational mechanics, a gentleman and scholar. He was a Giant in Mechanics and an ingenious engineer, and his dedication to education. I am deeply grateful for his guidance over the years and miss his

  15. Reduced SNP Panels for Genetic Identification and Introgression Analysis in the Dark Honey Bee (Apis mellifera mellifera)

    E-Print Network [OSTI]

    Muñ oz, Irene; Henriques, Dora; Johnston, J. Spencer; Chá vez-Galarza, Julio; Kryger, Per; Pinto, M. Alice

    2015-04-13

    %). (DOCX) Acknowledgments We are deeply grateful to Andrew Abrahams, Bjrn Dahle, Gabriele Soland-Reckeweg, Gilles Fert, Lionel Garnery, Norman Carreck, Pilar de la Ra, Raffaele Dall'Olio, and Romee Van der Zee for providing honey bee samples. DNA...

  16. EMPIRICAL STUDY OF DIVIDE AND CONQUER ALGORITHMS FOR

    E-Print Network [OSTI]

    Ramaswamy, Venkatakrishnan

    thankful to Ravi Gummadi 2 ; ISAT, our Satis#12;ability Solver, that is partic- ipating in the SAT for preserving our freedom. I am grateful to Ramesh Ananthakrishnan, Perl hacker, GNU/Linux ad- vocate, and good

  17. Nanogratings containing sub-10-nm wide trenches by dimension reduction from sloped polymer profile

    E-Print Network [OSTI]

    Hu, Wenchuang "Walter"

    to produce nanostructures over large areas.8 How- ever, fabrication of imprint molds, particularly for ultra to reduce grating dimension is SAFIER, a temperature dependent as high as 160 C shrinking process in which

  18. Galen Sasaki University of Hawaii 1 Multiplexers and Filters

    E-Print Network [OSTI]

    Sasaki, Galen H.

    1 Galen Sasaki University of Hawaii 1 Components Multiplexers and Filters Multilayer Dielectric Filter Optical Amplifiers EDFAs Galen Sasaki University of Hawaii 2 Outline Multiplexers Grating Acousto-Optical Tunable Filter Optical Amplifiers EDFAs Galen Sasaki University of Hawaii 3

  19. Distribution of Residence Times of Grains in Sandpile Models.

    E-Print Network [OSTI]

    Institute of Fundamental Research, Mumbai For the degree of Doctor of Philosophy in Physics by Punyabrata Research Mumbai July, 2006 #12;Acknowledgments I am highly grateful to my supervisor, Professor Deepak Dhar

  20. Global optimization in reduced space Achim Wechsung

    E-Print Network [OSTI]

    properties. Thesis Supervisor: Paul I. Barton Title: Lammot du Pont Professor of Chemical Engineering #12 of coal that is made good under pressure. (Henry A. Kissinger) I am grateful for and appreciative