Powered by Deep Web Technologies
Note: This page contains sample records for the topic "liquid crystal displays" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Liquid crystal displays for the evaluation of dental  

Science Journals Connector (OSTI)

We assessed whether dental x-ray images observed on a liquid crystal display (LCD) could be applied to diagnosis. A 13-inch TFT (thin film transistor) display was utilized in this study. Fifty x-ray films of r...

Keiichi Uchida D.D.S.; Masaomi Takizawa Sc.D.; Takurou Wada D.D.S.; Ph.D.…

1999-06-01T23:59:59.000Z

2

Effect of fluorescent lighting on the color of liquid-crystal displays  

Science Journals Connector (OSTI)

Liquid-crystal displays (LCDs) are used for displaying medical images under various illuminance conditions and with ambient-lighting colors. Our purpose in this study was ... of the chromaticity in LCDs under dif...

Yudai Yano; Junji Morishita; Hiroshi Akamine…

2014-07-01T23:59:59.000Z

3

Application of Nanotechnology to liquid crystal displays H S Kwok, Z L Xie and Fion Yeung  

E-Print Network (OSTI)

Application of Nanotechnology to liquid crystal displays H S Kwok, Z L Xie and Fion Yeung Center shall report new results on the application of nanotechnology to LCD. Specifically we shall discuss as the alignment layer. Summary We describe here two experiments on the application of nanotechnology to liquid

4

Plastic substrates for active matrix liquid crystal display incapable of withstanding processing temperature of over 200 C and method of fabrication  

DOE Patents (OSTI)

Bright-polarizer-free, active-matrix liquid crystal displays (AMLCDs) are formed on plastic substrates. The primary components of the display are a pixel circuit fabricated on one plastic substrate, an intervening liquid-crystal material, and a counter electrode on a second plastic substrate. The-pixel circuit contains one or more thin-film transistors (TFTs) and either a transparent or reflective pixel electrode manufactured at sufficiently low temperatures to avoid damage to the plastic substrate. Fabrication of the TFTs can be carried out at temperatures less than 100 C. The liquid crystal material is a commercially made nematic curvilinear aligned phase (NCAP) film. The counter electrode is comprised of a plastic substrate coated with a transparent conductor, such as indium-doped tin oxide (ITO). By coupling the active matrix with NCAP, a high-information content can be provided in a bright, fully plastic package. Applications include any low cost portable electronics containing flat displays where ruggedization of the display is desired. 12 figs.

Carey, P.G.; Smith, P.M.; Havens, J.H.; Jones, P.

1999-01-05T23:59:59.000Z

5

Plastic substrates for active matrix liquid crystal display incapable of withstanding processing temperature of over 200.degree. C and method of fabrication  

DOE Patents (OSTI)

Bright-polarizer-free, active-matrix liquid crystal displays (AMLCDs) are formed on plastic substrates. The primary components of the display are a pixel circuit fabricated on one plastic substrate, an intervening liquid-crystal material, and a counter electrode on a second plastic substrate. The-pixel circuit contains one or more thin-film transistors (TFTs) and either a transparent or reflective pixel electrode manufactured at sufficiently low temperatures to avoid damage to the plastic substrate. Fabrication of the TFTs can be carried out at temperatures less than 100.degree. C. The liquid crystal material is a commercially made nematic curvilinear aligned phase (NCAP) film. The counter electrode is comprised of a plastic substrate coated with a transparent conductor, such as indium-doped tin oxide (ITO). By coupling the active matrix with NCAP, a high-information content can be provided in a bright, fully plastic package. Applications include any low cost portable electronics containing flat displays where ruggedization of the display is desired.

Carey, Paul G. (Mountain View, CA); Smith, Patrick M. (San Ramon, CA); Havens, John (San Diego, CA); Jones, Phil (Marlborough, GB)

1999-01-01T23:59:59.000Z

6

Nanopatterned anchoring layers for liquid crystals  

E-Print Network (OSTI)

This thesis describes the theory and fabrication of inhomogeneous Liquid Crystal anchoring layers. While chemical anchoring techniques have proved useful for many applications, especially Liquid Crystal Displays, they have ...

Gear, Christopher S. (Christopher Stanwood)

2014-01-01T23:59:59.000Z

7

IEEE/OSA JOURNAL OF DISPLAY TECHNOLOGY, VOL. 1, NO. 1, SEPTEMBER 2005 41 New Developments in Liquid Crystal Photo-Aligning  

E-Print Network (OSTI)

Crystal Photo-Aligning by Azo-Dyes Hoi-Sing Kwok, Vladimir G. Chigrinov, Hirokazu Takada, and Haruyoshi Takatsu Invited Paper Abstract--Liquid crystal (LC) photo-alignment using azo-dyes is reviewed such as photo-crosslinking, photo degradation, and photo-isomerization. We present the basic physical mechanisms

8

Handbook of Liquid Crystal Research (ed.s Collings, Peter J.; Patel, Jay S.)  

Science Journals Connector (OSTI)

Handbook of Liquid Crystal Research (ed.s Collings, Peter J.; Patel, Jay S.) ... Begins with the fundamentals of the liquid crystalline phase, progresses to a discussion of important parameters in liquid crystalline systems such as electric field and surface effects, and ends with technological aspects of utilizing liquid crystals in displays. ... It is an all-encompassing monograph that provides a link from the fundamental chemistry of liquid crystals to their technological applications. ...

Mark Dadmun

1998-10-01T23:59:59.000Z

9

Flowing Liquid Crystal Simulating the Schwarzschild Metric  

E-Print Network (OSTI)

We show how to simulate the equatorial section of the Schwarzschild metric through a flowing liquid crystal in its nematic phase. Inside a liquid crystal in the nematic phase, a traveling light ray feels an effective metric, whose properties are linked to perpendicular and parallel refractive indexes, $n_o$ e $n_e$ respectively, of the rod-like molecule of the liquid crystal. As these indexes depend on the scalar order parameter of the liquid crystal, the Beris-Edwards hydrodynamic theory is used to connect the order parameter with the velocity of a liquid crystal flow at each point. This way we calculate a radial velocity profile that simulates the equatorial section of the Schwarzschild metric, in the region outside of Schwarzschild's radius, in the nematic phase of the liquid crystal. In our model, the higher flow velocity can be of the order of some meters per second.

Erms R. Pereira; Fernando Moraes

2010-11-21T23:59:59.000Z

10

Mechanical Stability of Pixel-Isolated Liquid Crystal Mode with Plastic Substrates  

Science Journals Connector (OSTI)

We have fabricated a plastic liquid crystal display using the pixel-isolated liquid crystal (PILC) mode and characterized the mechanical stability of the sample against mechanical pressure and bending. Since the liquid crystal molecules are fully isolated in the pixels by the phase-separated polymer walls in the PILC mode, the electrooptic properties of the sample show good mechanical stability. In addition, a polymer layer formed on the upper substrate enhances the adhesion between two plastic substrates.

Jong-Wook Jung; Min Young Jin; Hak-Rin Kim; You-Jin Lee; Jae-Hoon Kim

2005-01-01T23:59:59.000Z

11

Communications Counterion Effects in Liquid Crystal  

E-Print Network (OSTI)

of nanostructured CdS templated directly with ion-doped liquid crystals.13,14 In both cases the mesoporous solidCommunications Counterion Effects in Liquid Crystal Templating of Nanostructured CdS V. Tohver, P system, nanostructured particles consisting of alternat- ing sheets of CdS and oligomeric vinyl alcohol

Braun, Paul

12

Cholesteric Pitch of Lyotropic Polymer Liquid Crystals  

Science Journals Connector (OSTI)

Cholesteric Pitch of Lyotropic Polymer Liquid Crystals ... The cholesteric pitch P of semiflexible helical polymer solutions was formulated using a threaded equivalent freely jointed chain model. ... The structure of cholesteric liquid crystals is characterized by the cholesteric pitch P or the cholesteric wavenumber qc (?2?/P). ...

Takahiro Sato; Jun Nakamura; Akio Teramoto; Mark M. Green

1998-02-03T23:59:59.000Z

13

Photo-responsive liquid crystal block copolymers/  

E-Print Network (OSTI)

Photo-responsive liquid crystal polymers (LCP) which contain azobenzene moieties have gained interest for their ability to change properties by merely irradiating them with the correct wavelength of light in the appropriate ...

Petr, Michael Thomas

2012-01-01T23:59:59.000Z

14

Goethite liquid crystals and magnetic field effects.  

E-Print Network (OSTI)

??In this thesis the liquid crystal phase behavior of colloidal, boardlike, goethite (alpha-FeOOH) particles is described. Apart from the nematic phase, a smectic A phase… (more)

Pol, E. van den

2010-01-01T23:59:59.000Z

15

Liquid Crystal Microfluidics for Tunable Flow Shaping  

Science Journals Connector (OSTI)

We explore the flow of a nematic liquid crystal in microfluidic channels with a rectangular cross section through experiments and numerical modeling. The flow profile and the liquid crystal orientational profile show three distinct regimes of weak, medium, and strong flow as the driving pressure is varied. These are identified by comparing polarizing optical microscopy experiments and numerical solutions of the nematofluidic equations of motion. The relative stability of the regimes is related to the de Gennes characteristic shear-flow lengths e1 and e2, together with the channel’s aspect ratio w/d. Finally, we show that the liquid crystalline microfluidic flow can be fully steered from left to right of a simple microchannel by applying transverse temperature gradients.

Anupam Sengupta; Uroš Tkalec; Miha Ravnik; Julia M. Yeomans; Christian Bahr; Stephan Herminghaus

2013-01-25T23:59:59.000Z

16

Analysis ofNematic Liquid Crystals with Disclination Lines  

E-Print Network (OSTI)

with Disclination Lines. PATRICIA BAUMAN*, JINHAE PARKT & DANIEL PHILLIPs*. Abstract. We investigate the structure of nematic liquid crystal thin ?lms ...

17

Liquid crystals and Q-tensors The free energy  

E-Print Network (OSTI)

Liquid crystals and Q-tensors The free energy A temperature-dependent model Mathematical results #12;Liquid crystals and Q-tensors The free energy A temperature-dependent model Mathematical results, Non-isothermal nematic liquid crystals flows with the Ball-Majumdar free energy, Ann. Mat. Pura Appl

Segatti, Antonio

18

Designing solution-processable air-stable liquid crystalline crosslinkable semiconductors  

Science Journals Connector (OSTI)

...liquid crystal (LC) displays, flexible organic light emitting diode displays, low frequency radio frequency identification...liquid crystal (LC) displays, flexible organic light emitting diode displays, low frequency radio frequency identification...

2006-01-01T23:59:59.000Z

19

Microsphere Manipulation Using Ferroelectric Liquid Crystals  

Science Journals Connector (OSTI)

We propose a strategy for a micromanipulation method using SSFLC (surface stabilized ferroelectric liquid crystals). By adjusting the frequency of the applied ac electric field, the surface layers that cannot follow an applied ac electric field are constructed in SSFLC. In addition, by applying a sawtooth wave voltage, net flow along the smectic layer is generated. The flow direction is reversed by changing the polarity of the sawtooth wave. Consequently, the particles dispersed in SSFLC can be driven bidirectionally along the smectic layer. The particle velocity depends on the temperature, amplitude, and frequency of the applied voltage.

Yoshitaka Mieda and Katsushi Furutani

2005-10-20T23:59:59.000Z

20

Electric field effects in liquid crystals with dielectric dispersion  

SciTech Connect

The project is focused on the experimental and theoretical exploration of the coupling of an externally applied electric field and a nematic liquid crystal.

Lavrentovich, Oleg D. [Kent State University

2014-11-29T23:59:59.000Z

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


21

Spatial resolution and noise in organic light-emitting diode displays for medical imaging applications  

Science Journals Connector (OSTI)

We report on the resolution and noise characteristics of handheld and workstation organic light-emitting diode (OLED) displays in comparison with liquid crystal displays (LCDs). The...

Yamazaki, Asumi; Wu, Chih-Lei; Cheng, Wei-Chung; Badano, Aldo

2013-01-01T23:59:59.000Z

22

STEADY STATE LIQUID CRYSTAL THERMOGRAPHY AND HEAT TRANSFER MEASUREMENTS ON  

E-Print Network (OSTI)

Chapter V STEADY STATE LIQUID CRYSTAL THERMOGRAPHY AND HEAT TRANSFER MEASUREMENTS ON SURFACES Composite Heat Transfer Surface Liquid Crystal Image Processing Technique V . 4 Experimental Results and Discussion Test Conditions and Data Analysis Application to Endwall Heat Transfer Problem Further Application

Camci, Cengiz

23

Methods of making composite optical devices employing polymer liquid crystal  

DOE Patents (OSTI)

Composite optical devices are disclosed using polymer liquid crystal materials both as optical and adhesive elements. The devices are made by assembling a heated polymer liquid crystal compound, while in a low viscosity form between optically transparent substrates. The molecules of the polymer are oriented, while in the liquid crystalline state and while above the glass transition temperature (T[sub g]) of the polymer, to provide the desired optical effects, such as polarization, and selective reflection. The liquid crystal polymer cements the substrates together to form an assembly providing the composite optical device. 7 figures.

Jacobs, S.D.; Marshall, K.L.; Cerqua, K.A.

1991-10-08T23:59:59.000Z

24

Methods of making composite optical devices employing polymer liquid crystal  

DOE Patents (OSTI)

Composite optical devices using polymer liquid crystal materials both as optical and adhesive elements. The devices are made by assembling a heated polymer liquid crystal compound, while in a low viscosity form between optically transparent substrates. The molecules of the polymer are oriented, while in the liquid crystalline state and while above the glass transition temperature (T.sub.g) of the polymer, to provide the desired optical effects, such as polarization, and selective reflection. The liquid crystal polymer cements the substrates together to form an assembly providing the composite optical device.

Jacobs, Stephen D. (Pittsford, NY); Marshall, Kenneth L. (Henrietta, NY); Cerqua, Kathleen A. (Fairport, NY)

1991-01-01T23:59:59.000Z

25

Extraordinarily wide-view circular polarizers for liquid crystal displays  

E-Print Network (OSTI)

, Thomas X. Wu1 , Shin-Tson Wu1 , Chao-Lien Lin2 , Nai-Chin Hsu2 , Wang-Yang Li2 , and Chung-Kuang Wei2 1 sphere and through computer-aided parameter search method. According to this design, the high of Light (Wiley, New York, 1997). 13. A. Lien, "Extended Jones matrix representation for the twisted

Wu, Shin-Tson

26

2009 ~OE12 Chinese Journal of Liquid Crystals and Displays  

E-Print Network (OSTI)

temperature poly2Si ( L TPS ) processing technologies are greatly required[1 ,2 ] . Poly2Si films with large poly2Si has high field effect mobility of 70¡« 80 cm2 / V - 1 ¡/ s- 1 , sub2threshold slope of 1. 5 V2like domain SMIC poly2Si TFTs exhibited excellent reliability under high gate bias2stress and hot

27

White light emitting diode as liquid crystal display backlight ; High brightness light emitting diode as liquid crystal display backlight .  

E-Print Network (OSTI)

??The discovery of high brightness (white) light emitting diode (LED) is considered as a real threat to the current lighting industry in various applications. One… (more)

Soon, Chian Myau

2007-01-01T23:59:59.000Z

28

Smectic ordering in polymer liquid crystal-silica aerogel nanocomposites  

Science Journals Connector (OSTI)

Two series of side chain liquid crystal (SCLC) polyacrylate-silica aerogel nanocomposites have been investigated by small-angle X-ray scattering (SAXS) and differential scanning calorimetry (DSC). The first se...

H. Westfahl Jr.

2005-02-01T23:59:59.000Z

29

NMR STUDIES OF LIQUID CRYSTALS AND MOLECULES DISSOLVED IN LIQUID CRYSTAL SOLVENTS  

SciTech Connect

This thesis describes several studies in which nuclear magnetic resonance (nmr) spectroscopy has been used to probe the structure, orientation and dynamics of liquid crystal mesogens and molecules dissolved in liquid crystalline phases. In addition, a modern high field nmr spectrometer is described which has been used to perform such nmr studies. Chapter 1 introduces the quantum mechanical formalisms used throughout this thesis and briefly reviews the fundamentals of nuclear spin physics and pulsed nmr spectroscopy. First the density operator is described and a specific form for the canonical ensemble is derived. Then Clebsch-Gordon coefficients, Wigner rotation matrices, and irreducible tensor operators are reviewed. An expression for the equilibrium (Curie) magnetization is obtained and the linear response of a spin system to a strong pulsed r.f. irradiation is described. Finally, the spin interaction Hamiltonians relevant to this work are reviewed together with their truncated forms. Chapter 2 is a deuterium magnetic resonance study of two 'nom' liquid crystals which possess several low temperature mesomorphic phases. Specifically, deuterium quadrupolar echo spectroscopy is used to determine the orientation of the liquid crystal molecules in smectic phases, the changes in molecular orientation and motion that occur at smectic-smectic phase transitions, and the order of the phase transitions. For both compounds, the phase sequence is determined to be isotropic, nematic, smectic A, smectic C, smectic B{sub A}, smectic B{sub C}, and crystalline. The structure of the smectic A phase is found to be consistent with the well-known model of a two dimensional liquid in which molecules are rapidly rotating about their long axes and oriented at right angles to the plane of the layers. Molecules in the smectic C phase are found to have their long axes tilted with respect to the layer normal, and the tilt angle is temperature dependent, increasing from zero at the smectic A - smectic C transition and reaching a maximum at 9{sup o} at the smectic C - smectic B{sub A} transition. This finding contradicts the results of X-ray diffraction studies which indicate that the tilt angle is 18{sup o} and temperature independent. The smectic B{sub A} - smectic B{sub C} phase transition is observed for the first time, and is found to be first order, a result that contradicts the prediction of a mean theory by McMillian. Chapter 3 is a multiple quantum nmr study of n-hexane oriented in a nematic liquid crystal solvent. The basic three pulse multiple quantum experiment is discussed which enables the observation of transitions for which |{Delta}m|>1, and then the technique of the separation of multiple quantum orders by phase incrementation in the multiple quantum evolution period is reviewed (TPPI). An explicit example of multiple quantum nmr is given by the calculation of the multiple quantum spectrum of an oriented methyl group.

Drobny, G.P.

1982-11-01T23:59:59.000Z

30

Nanoparticle-chiral nematic liquid crystal composites  

E-Print Network (OSTI)

The advancement of the fabrication of a one-dimensional photonic crystal without time-reversal and space-inversion symmetries was pursued. Theoretical studies predict that such a system would exhibit unusual optical ...

Payne, Jeffrey C. (Jeffrey Christopher), 1981-

2006-01-01T23:59:59.000Z

31

Diffraction of light by topological defects in liquid crystals  

E-Print Network (OSTI)

We study light scattering by a hedgehog-like and linear disclination topological defects in a nematic liquid crystal by a metric approach. Light propagating near such defects feels an effective metric equivalent to the spatial part of the global monopole and cosmic string geometries. We obtain the scattering amplitude and the differential and total scattering cross section for the case of the hedgehog defect, in terms of the characteristic parameters of the liquid crystal. Studying the disclination case, a cylindrical partial wave method is developed. As an application of the previous developments, we also examine the temperature influence on the localization of the diffraction patterns.

E. Pereira; F. Moraes

2010-11-22T23:59:59.000Z

32

Gradient index liquid crystal devices and method of fabrication thereof  

DOE Patents (OSTI)

Laser beam apodizers using cholesteric liquid crystals provides soft edge profile by use of two separate cholesteric liquid crystal mixtures with different selective reflection bands which in an overlap region have a gradient index where reflectivity changes as a function of position. The apodizers can be configured as a one-dimensional beam apod INTRODUCTION The U.S. government has rights in the invention under Contract No. DE-FC03-85DP40200 between the University of Rochester and the Department of Energy.

Lee, J.C.; Jacobs, S.

1991-10-29T23:59:59.000Z

33

E-Print Network 3.0 - aligned liquid crystal Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

... Source: Reznikov, Yuri - Department of Physics of Crystals, Institute of Physics Ukraine Collection: Engineering ; Physics 4 Fast birefringent mode stressed liquid crystal...

34

E-Print Network 3.0 - anisotropy liquid crystal Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

... Source: Reznikov, Yuri - Department of Physics of Crystals, Institute of Physics Ukraine Collection: Engineering ; Physics 7 Photoalignment of Liquid Crystals on Chalcogenide...

35

Metric approach for sound propagation in nematic liquid crystals  

E-Print Network (OSTI)

In the eikonal approach, we describe sound propagation near to topological defects of nematic liquid crystal as geodesics of a non-euclidian manifold endowed with an effective metric tensor. The relation between the acoustics of the medium and this geometrical description is given by Fermat's principle. We calculate the ray trajectories and propose a diffraction experiment to retrieve informations about the elastic constants.

E. Pereira; S. Fumeron; F. Moraes

2013-01-21T23:59:59.000Z

36

Possible Martensitic Transformation in Hydrated Phospholipid Liquid Crystals  

Science Journals Connector (OSTI)

The main phase transition in smectic liquid crystals of a hydrated phospholipid involves a Martensitic transformation driven by the molecular-conformation changes. This inhomogeneous shear transformation generates periodic crystallographic twins that appear as corrugations of the molecular bilayer sheets. The model accounts for the observed lipid shedding, hysteresis, double corrugation periodicities, and diffusion anomalies, and may account for other smectic herringbone structures.

Winston K. Chan and Watt W. Webb

1981-01-05T23:59:59.000Z

37

A MOLECULAR THEORY OF SURFACE TENSION IN NEMATIC LIQUID CRYSTALS  

E-Print Network (OSTI)

1187 A MOLECULAR THEORY OF SURFACE TENSION IN NEMATIC LIQUID CRYSTALS J. D. PARSONS Departamento de 1976, accepte le 10 mai 1976) Résumé. - On calcule la tension superficielle à la surface libre d le plan de la surface; b) il y a un saut de la tension de surface à la transition nématique

Paris-Sud XI, Université de

38

Liquid Crystal Optics and Photonics CPHY Assignment 2.  

E-Print Network (OSTI)

Liquid Crystal Optics and Photonics CPHY 74495 Assignment 2. P. Pal¤y-Muhoray Jan. 24, 2014 Due: Feb 4, 2014 1. Read pages 25 - 37 of the text (Guenther, Modern Optics). 2. Read Ch 2., Review of Electricity and Magnetism (http://mpal¤y.lci.kent.edu/optics) 3. Red light with wavelength = 632:8nm

Palffy-Muhoray, Peter

39

Hydrodynamics of three-dimensional stacked hexatic liquid crystals  

Science Journals Connector (OSTI)

The hydrodynamic equations for three-dimensional stacked hexatic liquid crystals, i.e., for hexatic-B and its tilted analogs, smectic-F and smectic-I, are presented. Differences and similarities to the hydrodynamics of smectic-A and smectic-C are discussed and the role of the additional variable characterizing the bond orientational order is elucidated.

H. Pleiner and H. R. Brand

1984-02-01T23:59:59.000Z

40

Lattice Boltzmann algorithm for three–dimensional liquid–crystal hydrodynamics  

Science Journals Connector (OSTI)

...P. Boon and P. V. Coveney Lattice Boltzmann algorithm for three-dimensional...hydrodynamics We describe a lattice Boltzmann algorithm to simulate liquid-crystal...nematics with an imposed twist. lattice Boltzmann|liquid crystal|hydrodynamics...

2004-01-01T23:59:59.000Z

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


41

Chiral Discotic Columnar Phases in Liquid Crystals  

E-Print Network (OSTI)

We introduce a model to describe columnar phases of chiral discotic liquid phases in which the normals to disc-like molecules are constrained to lie parallel to columnar axes. The model includes separate chiral interactions favoring, respectively, relative twist of chiral molecules along the axes of the columns and twist of the two-dimensional columnar lattice. It also includes a coupling between the lattice and the orientation of the discotic molecules. We discuss the instability of the aligned hexagonal lattice phase to the formation of a soliton lattice in which molecules twist within their columns without affecting the lattice and to the formation of a moir\\'{e} phase consisting of a periodic array of twist grain boundaries perpendicular to the columns.

Gu Yan; T. C. Lubensky

1996-11-08T23:59:59.000Z

42

Mesogenic linear azobenzene polymer-stabilized nematic liquid crystals  

SciTech Connect

We describe the detailed study of a polymer stabilized liquid crystal compound, which was created by using a reactive (monofunctional) azobenzene mesogenic guest and a nematic liquid crystal host. The resonant interaction of light with the azobenzene segment of the guest and the mesogenic nature of the latter enable the optical alignment of host molecules and the permanent fixing of that orientation by means of UV polymerization of the guest. We use dynamic spectral, polarimetric, and scattering techniques to study the orientational ordering and interaction of the guest-host system. We show that the uniform UV polymerization of this compound results in a low scattering material system with dielectric and elastic properties that are relatively close to those of the host, while still providing the capacity for optical configuration of its morphology.

Bagramyan, Arutyun; Thibault-Maheu, Olivier; Galstian, Tigran [Center for Optics, Photonics and Laser, Department of Physics, Engineering Physics and Optics, Laval University, Pav. d'Optique-Photonique, 2375 Rue de la Terrasse, Quebec G1V 0A6 (Canada); Bessette, Andre; Zhao, Yue [Departement de Chimie, Universite de Sherbrooke, Sherbrooke, Quebec J1K 2R1 (Canada)

2011-03-15T23:59:59.000Z

43

General elastic interaction in nematic liquid crystals colloids  

E-Print Network (OSTI)

The new free energy functional that describes general elastic interaction between colloidal particles and nematic liquid crystal has been proposed. It generalizes results of the paper \\cite{lupe} on the case of arbitrary orientation of colloidal particles and is valid for arbitrary surface anchoring strength. Formal analogies and differences between electric particles and colloidal particles in LC are found. It is first time shown that spur of the quadrupole moment tensor is different from zero $Sp\\hat{Q}_{\\mu}\

S. B. Chernyshuk; B. I. Lev

2009-07-29T23:59:59.000Z

44

Synthesis and Liquid Crystal Phase Transitions of Zirconium Phosphate Disks  

E-Print Network (OSTI)

products. Mostly with flask shape, the particles made up the clay which is abundant in the earth covering our planet. Like graphene, some inorganic layered compounds, such as MoS2, Niobium layered oxide (Niobates), and ?-Zirconium phosphates (?-Zr... discotic liquid crystal systems have been studied, including nature clay suspensions [24], monolayer niobate suspensions [25], and 4 recently graphene oxide suspensions [26], the majority of the works are focused on the I- N transitions. One reason...

Shuai, Min

2013-05-07T23:59:59.000Z

45

Successive Phase Transitions in Antiferroelectric Liquid Crystal Systems  

E-Print Network (OSTI)

An axial next-nearest-neighbor XY model is studied as a model of chiral liquid crystals which exhibit many ferro-, ferri- and antiferroelectric tilted smectic phases. Depending on the values of interaction parameters, this model exhibits Ising symmetric (i.e., the tilt directions of directors are parallel or anti parallel) phases or XY symmetric phases. Phases with each type-of-symmetry show the character of devil's staircase, which has been observed in experiments.

Masaya Koroishi; Masashi Torikai; Mamoru Yamashita

2005-10-03T23:59:59.000Z

46

Generation of vector beams with liquid crystal disclination lines  

E-Print Network (OSTI)

We report that guiding light beams, ranging from continuous beams to femtosecond pulses, along liquid crystal defect lines can transform them into vector beams with various polarization profiles. Using Finite Difference Time Domain numerical solving of Maxwell equations, we confirm that the defect in the orientational order of the liquid crystal induces a defect in the light field with twice the winding number of the liquid crystal defect, coupling the topological invariants of both fields. For example, it is possible to transform uniformly-polarized light into light with a radial polarization profile. Our approach also correctly yields a zero-intensity region near the defect core, which is always present in areas of discontinuous light polarization or phase. Using circularly polarized incident light, we show that defects with non-integer winding numbers can be obtained, where topological constants are preserved by phase vortices, demonstrating coupling between the light's spin, orbital angular momentum and polarization profile. Further, we find an ultrafast femtosecond laser pulse travelling along a defect line splits into multiple intensity regions, again depending on the defect's winding number, allowing applications in beam steering and filtering. Finally, our approach describing generation of complex optical fields via coupling with topological defect lines in optically birefringent nematic fluids can be easily extended to high-intensity beams that affect nematic ordering.

Miha ?an?ula; Miha Ravnik; Slobodan Žumer

2014-08-12T23:59:59.000Z

47

Chameleon: A Color-Adaptive Web Browser for Mobile OLED Displays  

Science Journals Connector (OSTI)

Displays based on organic light-emitting diode (OLED) technology are appearing on many mobile devices. Unlike liquid crystal displays (LCD), OLED displays consume dramatically different power for showing different colors. In particular, OLED displays ... Keywords: OLED display, web browser, color transformation, low power.

Mian Dong; Lin Zhong

2012-05-01T23:59:59.000Z

48

Order Electricity and Surface Orientation in Nematic Liquid Crystals  

Science Journals Connector (OSTI)

A nematic liquid crystal should present an order electric polarization associated with the gradient of order parameter, in addition to the flexoelectric polarization associated with the gradient of orientation. Using thermodynamical arguments, we show that the order-electricity coefficients are of the same order as the flexoelectric ones. The dielectric energy resulting from the order polarization can explain the unsolved problem of the spontaneous titled orientation at the nematic-isotropic (or air) interfaces. The core of disclination lines can also present electric multipoles.

G. Barbero; I. Dozov; J. F. Palierne; G. Durand

1986-05-12T23:59:59.000Z

49

Chirality in Liquid Crystals: from Microscopic Origins to Macroscopic Structure  

E-Print Network (OSTI)

Molecular chirality leads to a wonderful variety of equilibrium structures, from the simple cholesteric phase to the twist-grain-boundary phases, and it is responsible for interesting and technologically important materials like ferroelectric liquid crystals. This paper will review some recent advances in our understanding of the connection between the chiral geometry of individual molecules and the important phenomenological parameters that determine macroscopic chiral structure. It will then consider chiral structure in columnar systems and propose a new equilibrium phase consisting of a regular lattice of twisted ropes.

T. C. Lubensky; A. B. Harris; Randall D. Kamien; Gu Yan

1997-10-31T23:59:59.000Z

50

Rapid reversible phototuning of lasing frequency in dye-doped cholesteric liquid crystal  

Science Journals Connector (OSTI)

Lasing in induced cholesteric liquid crystal (CLC) containing highly photosensitive azo chiral dopant (ChD) and pyrromethene laser dye was investigated. Due to the absence of...

Mykytiuk, T V; Ilchishin, I P; Yaroshchuk, O V; Kravchuk, R M; Li, Y; Li, Q

2014-01-01T23:59:59.000Z

51

Long-pitch cholesteric liquid crystal cell for switchable achromatic reflection  

Science Journals Connector (OSTI)

We propose a switchable achromatic reflector using a long-pitch cholesteric liquid crystal (CLC) whose Bragg reflection wavelength is chosen to be infrared by controlling the pitch...

Kim, Ki-Han; Jin, Hye-Jung; Park, Kyoung-Ho; Lee, Joun-Ho; Kim, Jae Chang; Yoon, Tae-Hoon

2010-01-01T23:59:59.000Z

52

Ultra-high-resolution time projection chambers with liquid crystal backplanes  

SciTech Connect

We investigated the possibility of incorporating a liquid-crystal device into a gas ionization detector. After extensive R&D on several candidate liquid-crystal technologies, we developed some novel materials allowing twisted nematic liquid-crystal layers to be coupled directly to gas ionization counters. However, the resulting structures were unsuitable for large-scale or practical use. We tested several technologies known to result in mechanically-robust liquid crystal electrooptic layers, but found poor behavior in the detector context.

Monreal, Benjamin

2014-10-15T23:59:59.000Z

53

High-efficiency energy transfer due to stimulated orientational scattering of light in nematic liquid crystals  

Science Journals Connector (OSTI)

The saturation stage of stimulated orientational scattering (SOS) of light in thick planarly aligned nematic-liquid-crystal layers was observed and studied experimentally. The power...

Tabiryan, N V; Sukhov, A V; Zel'dovich, B Ya

2001-01-01T23:59:59.000Z

54

Dynamic voltage scaling of OLED displays  

Science Journals Connector (OSTI)

Unlike liquid crystal display (LCD) panels that require high-intensity backlight, organic LED (OLED) display panels naturally consume low power and provide high image quality thanks to their self-illuminating characteristic. In spite of this fact, the ... Keywords: DVS, OLED, image processing, low-power design

Donghwa Shin; Younghyun Kim; Naehyuck Chang; Massoud Pedram

2011-06-01T23:59:59.000Z

55

Generation of harmonics and supercontinuum in nematic liquid crystals  

SciTech Connect

Nonlinear optical properties of nematic liquid crystals (NLC) have been investigated. A technique for efficient laser frequency conversion in a microscopic NLC volume deposited on an optical fibre end face is experimentally demonstrated. An efficient design of a compact NLC-based IR frequency converter with a fibre input and achromatic collimator is proposed and implemented. Simultaneous generation of the second and third harmonics is obtained for the first time under pumping NLC by a 1.56-mm femtosecond fibre laser. The second-harmonic generation efficiency is measured to be about 1 %, while the efficiency of third-harmonic generation is several tenths of percent. A strong polarisation dependence of the third-harmonic generation efficiency is revealed. When pumping NLC by a cw laser, generation of spectral supercontinua (covering the visible and near-IR spectral ranges) is observed. The nonlinear effects revealed can be due to the light-induced change in the orientational order in liquid crystals, which breaks the initial symmetry and leads to formation of disclination structures. The NLC optical nonlinearity is believed to be of mixed orientationalelectronic nature as a whole. (laser optics 2012)

Nyushkov, B N; Trashkeev, S I; Klementyev, Vasilii M; Pivtsov, V S; Kobtsev, Sergey M

2013-02-28T23:59:59.000Z

56

Laser-Directed Hierarchical Assembly of Liquid Crystal Defects and Control of Optical Phase Singularities  

SciTech Connect

Topological defect lines are ubiquitous and important in a wide variety of fascinating phenomena and theories in many fields ranging from materials science to early-universe cosmology, and to engineering of laser beams. However, they are typically hard to control in a reliable manner. Here we describe facile erasable 'optical drawing' of self-assembled defect clusters in liquid crystals. These quadrupolar defect clusters, stabilized by the medium's chirality and the tendency to form twisted configurations, are shaped into arbitrary two-dimensional patterns, including reconfigurable phase gratings capable of generating and controlling optical phase singularities in laser beams. Our findings bridge the studies of defects in condensed matter physics and optics and may enable applications in data storage, singular optics, displays, electro-optic devices, diffraction gratings, as well as in both optically- and electrically-addressed pixel-free spatial light modulators.

Ackerman, P. J.; Qi, Z. Y.; Lin, Y. H.; Twombly, C. W.; Laviada, M. J.; Lansac, Y.; Smalyukh, I. I.

2012-06-07T23:59:59.000Z

57

Derivation of a three-dimensional phase-field-crystal model for liquid crystals from density functional theory  

E-Print Network (OSTI)

Using a generalized order parameter gradient expansion within density functional theory, we derive a phase-field-crystal model for liquid crystals composed by apolar particles in three spatial dimensions. Both the translational density and the orientational direction and ordering are included as order parameters. Different terms involving gradients in the order parameters in the resulting free energy functional are compared to the macroscopic Ginzburg-Landau approach as well as to the hydrodynamic description for liquid crystals. Our approach provides microscopic expressions for all prefactors in terms of the particle interactions. Our phase-field-crystal model generalizes the conventional phase-field-crystal model of spherical particles to orientational degrees of freedom and can be used as a starting point to explore phase transitions and interfaces for various liquid-crystalline phases.

Raphael Wittkowski; Hartmut Löwen; Helmut R. Brand

2010-07-09T23:59:59.000Z

58

In-plane pitch control of cholesteric liquid crystals by formation of artificial domains via patterned photopolymerization  

Science Journals Connector (OSTI)

A controlled helix pitch modulation in the in-plane direction of a planarly aligned cholesteric liquid crystal cell is demonstrated by using photopolymerizable cholesteric liquid...

Yoshida, Hiroyuki; Miura, Yusuke; Tokuoka, Kazuki; Suzuki, Satoshi; Fujii, Akihiko; Ozaki, Masanori

2008-01-01T23:59:59.000Z

59

Electrically switchable finite energy Airy beams generated by a liquid crystal cell with patterned electrode  

E-Print Network (OSTI)

Electrically switchable finite energy Airy beams generated by a liquid crystal cell with patterned electrode D. Luo, H.T. Dai, X.W. Sun , H.V. Demir School of Electrical and Electronic Engineering, Nanyang Keywords: Diffraction Liquid crystal devices Propagation A pair of electrically switchable finite energy

Demir, Hilmi Volkan

60

High-speed infrared phase modulators using short helical pitch ferroelectric liquid crystals  

E-Print Network (OSTI)

High-speed infrared phase modulators using short helical pitch ferroelectric liquid crystals Ju short helical pitch material and homeotropic alignment structure. This device is driven by periodic in of a thin layer of a ferroelectric liquid crystal with a small pitch and high spontaneous polarization

Wu, Shin-Tson

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


61

Dependence of the morphology of polymer dispersed liquid crystals on the UV polymerization process  

E-Print Network (OSTI)

temperature. Instead, high-temperature cures result in coalescence and the formation of elliptical temperature of the PDLC mixture matches the temperature of this phase sepa- ration line Tps . At this point liquid crystals PDLC as a function of polymer/liquid crystal composition, polymer cure temperature

Carter, Sue

62

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

E-Print Network (OSTI)

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

Wu, Shin-Tson

63

Electrically tunable liquid-crystal photonic crystal fiber Fang Du, Yan-Qing Lu, and Shin-Tson Wua)  

E-Print Network (OSTI)

internal reflection-guiding photonic crystal fiber by filling liquid crystal into the air core and cladding an electrically tunable fiber-optical switch with over 30 dB attenuation at 60 Vrms for a He-Ne laser beam the refractive index of the core is higher than that of cladding. Therefore, the guiding mechanisms are similar

Wu, Shin-Tson

64

Optical apparatus using liquid crystals for shaping the spatial intensity of optical beams having designated wavelengths  

DOE Patents (OSTI)

The spatial intensity profile of an optical beam of designated wavelengths, such as a laser beam, is shaped (the beam is apodized) by means of cholesteric liquid crystals of opposite chirality disposed successively along the path of the beam. The crystals have curved surfaces, which may be defined by a lens which defines the thickness of the liquid crystal fluid gap in a liquid crystal cell, so as to vary the selective reflection of the designated wavelength across the aperture of the beam. In this way, a soft aperture is provided. By using tandem cell pairs having liquid crystals of opposite chirality, but of different pitch, and with lenses of different curvature, beams of different wavelengths which are projected colinearly along the path may be individually tailored in spatial intensity profile.

Jacobs, Stephen D. (Pittsford, NY); Cerqua, Kathleen A. (Rochester, NY)

1987-01-01T23:59:59.000Z

65

Optical apparatus using liquid crystals for shaping the spatial intensity of optical beams having designated wavelengths  

DOE Patents (OSTI)

The spatial intensity profile of an optical beam of designated wavelengths, such as a laser beam, is shaped (the beam is apodized) by means of cholesteric liquid crystals of opposite chirality disposed successively along the path of the beam. The crystals have curved surfaces, which may be defined by a lens which defines the thickness of the liquid crystal fluid gap in a liquid crystal cell, so as to vary the selective reflection of the designated wavelength across the aperture of the beam. In this way, a soft aperture is provided. By using tandem cell pairs having liquid crystals of opposite chirality, but of different pitch, and with lenses of different curvature, beams of different wavelengths which are projected colinearly along the path may be individually tailored in spatial intensity profile. 11 figs.

Jacobs, S.D.; Cerqua, K.A.

1987-07-14T23:59:59.000Z

66

Electrically tunable optical filter for infrared wavelength using liquid crystals in a Fabry–Perot étalon  

Science Journals Connector (OSTI)

Using the refractive index modulation in liquid crystals by an externally applied electric field we show that common nematic liquid crystals can be used in a Fabry–Perot étalon to produce an electrically tunable optical filter for use in the infrared region. Using commercial liquid crystals we demonstrate that the wavelength can be tuned over 175 nm using less than 10 V. In our first device the free?spectral range of the étalon is about 75 nm with a passband of about 1–2 nm which is determined by the quality of the mirrors that we have used.

J. S. Patel; M. A. Saifi; D. W. Berreman; Chinlon Lin; N. Andreadakis; S. D. Lee

1990-01-01T23:59:59.000Z

67

Quantum Theory of Chiral Interactions in Cholesteric Liquid Crystals  

E-Print Network (OSTI)

We study the effective chiral interaction between molecules arising from quantum dispersion interactions within a model in which a) the dominant excited states of a molecule form a band whose width is small compared to the average excitation energy and b) biaxial orientational correlation between adjacent molecules can be neglected. Previous treatments of quantum chiral interactions were based on a multipole expansion of the intermolecular interaction. However, because real liquid crystals are composed of elongated molecules, we utilize an expansion in terms of only coordinates transverse to the long molecular axes. We identify two distinct physical limits depending on whether one or both of the interacting molecules are excited in the virtual state. When both molecules are excited, our results are similar to those found previously by van der Meer et al. Previously unidentified terms in which only one molecule is excited involve the interactions of local dipole moments, which exist even when the global dipole moment of the molecule vanishes. We present analytic and numerical results for helical molecules. Our results do not indicate whether the dominant chiral interaction in cholesterics results from quantum or from steric interactions.

A. S. Issaenko; A. B. Harris; T. C. Lubensky

1998-10-15T23:59:59.000Z

68

Some features of the photonic crystal fiber temperature sensor with liquid ethanol filling  

Science Journals Connector (OSTI)

We introduce a novel photonic crystal fiber (PCF) temperature sensor that is based on intensity modulation and liquid ethanol filling of air holes with index-guiding PCF. The mode...

Yu, Yongqin; Li, Xuejin; Hong, Xueming; Deng, Yuanlong; Song, Kuiyan; Geng, Youfu; Wei, Huifeng; Tong, Weijun

2010-01-01T23:59:59.000Z

69

Laser manipulation in liquid crystals: an approach to microfluidics and micromachines  

Science Journals Connector (OSTI)

...in liquid crystals: an approach to microfluidics and micromachines Helen F Gleeson...application of LC laser manipulation in microfluidics? Here, what is the advantage of LC...birefringent, rotating particles can enhance microfluidics applications is given in the optically...

2006-01-01T23:59:59.000Z

70

Enhancement of electro-optic properties in liquid crystal devices via titanium nanoparticle doping  

Science Journals Connector (OSTI)

We investigated the properties of nematic liquid crystal device (NLC) doped with titanium (Ti) nanoparticle (~100nm). The electro-optic (EO) properties of LCs changed according to Ti...

Ha, Yong-Seok; Kim, Hyung-Jun; Park, Hong-Gyu; Seo, Dae-Shik

2012-01-01T23:59:59.000Z

71

X-ray studies of the phases and phase transitions of liquid crystals  

Science Journals Connector (OSTI)

Recent X-ray diffraction studies of liquid crystals are reviewed. The topics are twist grain-boundary phases, antiferroelectric phases studied using resonant diffraction and smectic phases within gel structures.

Clegg, P.S.

2004-12-22T23:59:59.000Z

72

Measurements on ferroelectric liquid-crystal spatial light modulators: contrast ratio and speed  

Science Journals Connector (OSTI)

The contrast ratio and the speed of a 16 × 16 electrically addressed spatial light modulator, composed of a ferroelectric liquid-crystal layer on top of a VLSI silicon backplane, are...

Collings, N; Gourlay, J; Vass, D G; White, H J; Stace, C; Proudley, G M

1995-01-01T23:59:59.000Z

73

Spatially resolved lasers using a glassy cholesteric liquid crystal film with lateral pitch gradient  

E-Print Network (OSTI)

Spatially resolved lasers using a glassy cholesteric liquid crystal film with lateral pitch crystal CLC lasers, a lateral pitch gradient was introduced by thermally activated diffusion across efficiencies, 0.2%­1.5%, are superior to those reported to date for gradient-pitch CLC lasers. © 2011 American

Chen, Shaw H.

74

P-56 / A. Murauski P-56: Aligning Liquid Crystals Using Self-Assembled Monolayers  

E-Print Network (OSTI)

P-56 / A. Murauski P-56: Aligning Liquid Crystals Using Self-Assembled Monolayers Anatoli Murauski, this method is incompatible with localized control over LC alignment. Recently, anchoring of LC was demonstrated using low energy surfaces from self-assembled monolayers (SAMs) deposited from a liquid phase

75

All-optical switching and multistability in photonic structures with liquid crystal defects  

E-Print Network (OSTI)

We demonstrate that one-dimensional photonic crystals with pure nematic liquid-crystal defects can operate as all-optical switching devices based on optical orientational nonlinearities of liquid crystals. We show that such a periodic structure is responsible for a modulated threshold of the optical Fr\\'eedericksz transition in the spectral domain, and this leads to all-optical switching and light-induced multistability. This effect has no quasi-statics electric field analogue, and it results from nonlinear coupling between light and a defect mode.

Andrey E. Miroshnichenko; Etienne Brasselet; Yuri S. Kivshar

2007-12-24T23:59:59.000Z

76

Observation of crystallization slowdown in supercooled para-hydrogen and ortho-deuterium quantum liquid mixtures  

E-Print Network (OSTI)

We report a quantitative experimental study of the crystallization kinetics of supercooled quantum liquid mixtures of para-hydrogen (pH$_2$) and ortho-deuterium (oD$_2$) by high spatial resolution Raman spectroscopy of liquid microjets. We show that in a wide range of compositions the crystallization rate of the isotopic mixtures is significantly reduced with respect to that of the pure substances. To clarify this behavior we have performed path-integral simulations of the non-equilibrium pH$_2$-oD$_2$ liquid mixtures, revealing that differences in quantum delocalization between the two isotopic species translate into different effective particle sizes. Our results provide first experimental evidence for crystallization slowdown of quantum origin, offering a benchmark for theoretical studies of quantum behavior in supercooled liquids.

Matthias Kühnel; José M. Fernández; Filippo Tramonto; Guzmán Tejeda; Elena Moreno; Anton Kalinin; Marco Nava; Davide E. Galli; Salvador Montero; Robert E. Grisenti

2014-10-10T23:59:59.000Z

77

Engineering the next generation of large-area displays: prospects and pitfalls  

Science Journals Connector (OSTI)

...non-emitter liquid crystal active matrix passive matrix...technologies. CRT, cathode-ray tube; DMD, digital...cholesteric texture. into cathode-ray tube (CRT) and...non-emitter-based FPDs, such as active matrix liquid-crystal...OLEDs. OLED-based materials and displays have been...

2003-01-01T23:59:59.000Z

78

Influence of Liquid Water Content and Temperature on the Form and Growth of Branched Planar Snow Crystals in a Cloud  

Science Journals Connector (OSTI)

How liquid water content (LWC) and temperature affect the growth of branched planar snow crystals is poorly understood. To address this issue, a vertical supercooled cloud tunnel was used to grow 167 individual snow crystals for 10 min under ...

Tsuneya Takahashi

2014-11-01T23:59:59.000Z

79

Phase Diagram and Photopolymerization Behavior of Mixtures of UV-Curable Multifunctional Monomer and Low Molar Mass Nematic Liquid Crystal  

Science Journals Connector (OSTI)

A teapot phase diagram was obtained in which an upper critical solution temperature (UCST) overlapped with the nematic?isotropic transition of the liquid crystal. ...

Domasius Nwabunma; Kap Jin Kim; Yuhui Lin; L. C. Chien; Thein Kyu

1998-09-15T23:59:59.000Z

80

Measurement of reflective liquid crystal displays S. T. Tang and H. S. Kwoka)  

E-Print Network (OSTI)

and reflective LCDs. © 2002 American Institute of Physics. DOI: 10.1063/1.1473698 I. INTRODUCTION Reflective to obvious visual defects and coloration. For the case of LCoS microdisplays, the need for accu- rate cell for transmissive cells.6­13 These methods require the incident light to pass through the test cell

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


81

High performance liquid crystal displays with a low dielectric constant material  

E-Print Network (OSTI)

AU Optronics Corp., Hsinchu Science Park, Hsinchu 300, Taiwan * swu@ucf.edu Abstract: We report high

Wu, Shin-Tson

82

Turning film for widening the viewing angle of a blue phase liquid crystal display  

E-Print Network (OSTI)

of Optics and Photonics, University of Central Florida, Orlando, Florida 32816, USA 2 AU Optronics Corp

Wu, Shin-Tson

83

Prospects of emerging polymer-stabilized blue-phase liquid-crystal displays Linghui Rao  

E-Print Network (OSTI)

imposes a big challenge to nematic LCDs.3,4 Various approaches for reducing LC response time have been that the composite is optically isotropic in the voltage-off state.26,27 Our physical models fit experimental data, is subject to an electric field E, the induced birefringence is related to E as19: nind = KE2 , (1) where

Wu, Shin-Tson

84

Operation of a high purity germanium crystal in liquid argon as a Compton suppressed radiation spectrometer  

E-Print Network (OSTI)

A high purity germanium crystal was operated in liquid argon as a Compton suppressed radiation spectrometer. Spectroscopic quality resolution of less than 1% of the full-width half maximum of full energy deposition peaks was demonstrated. The construction of the small apparatus used to obtain these results is reported. The design concept is to use the liquid argon bath to both cool the germanium crystal to operating temperatures and act as a scintillating veto. The scintillation light from the liquid argon can veto cosmic-rays, external primordial radiation, and gamma radiation that does not fully deposit within the germanium crystal. This technique was investigated for its potential impact on ultra-low background gamma-ray spectroscopy. This work is based on a concept initially developed for future germanium-based neutrinoless double-beta decay experiments.

John L. Orrell; Craig E. Aalseth; John F. Amsbaugh; Peter J. Doe; Todd W. Hossbach

2006-10-11T23:59:59.000Z

85

Surface Crystallization in a Liquid AuSi Alloy  

SciTech Connect

X-ray measurements reveal a crystalline monolayer at the surface of the eutectic liquid Au{sub 82}Si{sub 18}, at temperatures above the alloy's melting point. Surface-induced atomic layering, the hallmark of liquid metals, is also found below the crystalline monolayer. The layering depth, however, is threefold greater than that of all liquid metals studied to date. The crystallinity of the surface monolayer is notable, considering that AuSi does not form stable bulk crystalline phases at any concentration and temperature and that no crystalline surface phase has been detected thus far in any pure liquid metal or nondilute alloy. These results are discussed in relation to recently suggested models of amorphous alloys.

Shpyrko,O.; Streitel, R.; Balagurusamy, V.; Grigoriev, A.; Deutsch, M.; Ocko, B.; Meron, M.; Lin, B.; Pershan, P.

2006-01-01T23:59:59.000Z

86

Crystal-liquid interfacial free energy of hard spheres via a novel thermodynamic integration scheme  

E-Print Network (OSTI)

The hard sphere crystal-liquid interfacial free energy, ($\\gamma_{\\rm cl}$), is determined from molecular dynamics simulations using a novel thermodynamic integration (TI) scheme. The advantage of this TI scheme compared to previous methods is to successfully circumvent hysteresis effects due to the movement of the crystal-liquid interface. This is accomplished by the use of extremely short-ranged and impenetrable Gaussian flat walls which prevent the drift of the interface while imposing a negligible free-energy penalty. We find that it is crucial to analyze finite-size effects in order to obtain reliable estimates of $\\gamma_{\\rm cl}$ in the thermodynamic limit.

Benjamin, Ronald

2014-01-01T23:59:59.000Z

87

27.1 / V. G. Chigrinov 27.1: Invited Paper: New Developments in Liquid Crystal Photo-Aligning  

E-Print Network (OSTI)

27.1 / V. G. Chigrinov 27.1: Invited Paper: New Developments in Liquid Crystal Photo Incorporated, Japan Abstract Liquid crystal photo-alignment using azo-dyes is reviewed. This alignment method is very different from previously reported ones, such as photo-crosslinking, photo degradation and photo

88

Metal slits and liquid crystals at microwave frequencies  

Science Journals Connector (OSTI)

...the possible use of dual frequency materials to allow drive-on as well as drive-off. Unfortunately such dual-frequency materials have reduced...T Nomoto2002Microwave variable delay line using dual-frequency switching-mode liquid...

2006-01-01T23:59:59.000Z

89

Collection of Abstracts of the XIII Christmas Conference on Liquid Crystals  

E-Print Network (OSTI)

, Department of Liquid Crystals, Institute of Physics, NAS of Ukraine 14-15 , 2014 , January 14-15, 2014 Kiev, Ukraine #12;2 Highly viscous chiral thin films for optical detection of small rotations and submicron displacements A. Iljin1 , P.V. Shibaev2 1 Insitute of Physics, NAS of Ukraine, Kiev, Ukraine 2 Department

Reznikov, Yuri

90

Photo-patterning micro-mirror devices using azo dye-doped cholesteric liquid crystals  

E-Print Network (OSTI)

Photo-patterning micro-mirror devices using azo dye-doped cholesteric liquid crystals Tsung: A simple method for fabricating patternable micro-mirror devices by photo-induced alignment of dye to nearly perfect planar by the photo-excited adsorbed dyes. This structure transformation leads

Wu, Shin-Tson

91

Heat Transfer Measurements for a Horizontal Micro-Tube Using Liquid Crystal Thermography  

E-Print Network (OSTI)

62 TC02-007 Heat Transfer Measurements for a Horizontal Micro-Tube Using Liquid Crystal-tube and 1000m micro-tube. In the single-phase heat transfer experiments, the fully-developed flow heat transfer were also measured using thermocouples (TC). The results showed that the heat transfer coefficient

Ghajar, Afshin J.

92

Laser manipulation in liquid crystals: an approach to microfluidics and micromachines  

Science Journals Connector (OSTI)

...3. Microrheology of liquid crystals Poulin et al. (1997) were the first to demonstrate...to the formation of particle clusters (Poulin Weitz 1998). There have been very few...perpendicular) at the colloid-LC interface (Poulin et al. 1994; Chaikin Lubensky 1998...

2006-01-01T23:59:59.000Z

93

Silver nanowire transparent electrodes for liquid crystal-based smart windows  

E-Print Network (OSTI)

privacy glass or as energy saving windows through the modulation of solar heat gain [1,3,4]. The operating sheet resistance, and low-cost. While the benefits of increased transparency and low-cost are obvious Polymer dispersed liquid crystal Smart window a b s t r a c t A significant manufacturing cost of polymer

Goldthorpe, Irene

94

Polar anchoring energy measurement of vertically aligned liquid-crystal cells  

E-Print Network (OSTI)

Polar anchoring energy measurement of vertically aligned liquid-crystal cells Xiangyi Nie July 2005 An electric-field method is developed for measuring the polar anchoring energy of vertically-electric-field technique3 is most commonly employed for measuring the polar anchor- ing energy. However, some inconsistent

Wu, Shin-Tson

95

On the influence of higher order gradient terms on the hydrodynamics of liquid crystals  

E-Print Network (OSTI)

.30 15 OCTOBRE 1980, 1 1. Introduction. - When dealing with the hydro- dynamics of liquid crystals [1]. It is the purpose of the present letter to investigate the influence of these higher order terms on the hydro theory can be set up because micro- scopic theories may prove in the future that there exist nonanalytic

Paris-Sud XI, Université de

96

Laser-induced thermal, orientational, and density nonlinear optical effects in nematic liquid crystals  

Science Journals Connector (OSTI)

We present a theoretical analysis of transient diffractions in nematic liquid crystals, where the nonlinear optical response is due to laser-induced changes in the temperature, density, and director axis reorientation. Our solutions of the field-induced reorientation equation and the coupled density and thermal conduction equations provide a quantitative theoretical model for the experimentally observed grating diffractions, oscillations, and relaxation phenomena.

I. C. Khoo; J. Y. Hou; G. L. Din; Y. L. He; D. F. Shi

1990-07-15T23:59:59.000Z

97

Colloids in liquid crystals: a lattice Boltzmann study  

E-Print Network (OSTI)

We propose a hybrid lattice Boltzmann algorithm to simulate the hydrodynamics of colloidal particles inside a liquid crystalline host. To validate our algorithm, we study the static and the microrheology of a colloid in a nematic, with tangential anchoring of the director field at the particle surface, and we confirm theories and experiments showing that the drag force in a nematic is markedly anisotropic. We then apply our method to consider the case of a colloid inside a cholesteric, and with normal anchoring at the surface. We show that by tuning the ratio between particle size and cholesteric pitch it is possible to control the defect configuration around the particle, and to stabilise novel figure-of-eight or highly twisted loops close to the colloid surface.

J. S. Lintuvuori; D. Marenduzzo; K. Stratford; M. E. Cates

2011-02-10T23:59:59.000Z

98

A Solid-like Crystal Structure on the Surface of a Liquid Alloy  

NLE Websites -- All DOE Office Websites (Extended Search)

A Solid-like Crystal Structure on the Surface of a Liquid Alloy A Solid-like Crystal Structure on the Surface of a Liquid Alloy A substance used in nanotechnology contains unusual structures at its surface, according to a team of researchers using the ChemMatCARS 15-ID beamline at the Advanced Photon Source. The research results, developed at the Center for Nanoscale Materials at Argonne, are published today in the journal Science. The substance in question is a gold-silicon eutectic alloy, 82 percent gold and 18 percent silicon. The term eutectic means that the combination melts at a temperature lower than that of the melting temperature of either of its components. For most eutectic alloys, the difference between the melting point of the alloy and those of its pure components is about 100 degrees Celsius; the gold-silicon eutectic alloy melts about 1,000 °C

99

Technique for compressing light intensity ranges utilizing a specifically designed liquid crystal notch filter  

DOE Patents (OSTI)

A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten metal in an atomic vapor laser isotope separation (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. To accomplish this, the assembly utilizes the combination of interference filter and a liquid crystal notch filter. The latter which preferably includes a cholesteric liquid crystal arrangement is configured to pass light at all wavelengths, except a relatively narrow wavelength band which defines the filter's notch, and includes means for causing the notch to vary to at least a limited extent with the intensity of light at its light incidence surface.

Rushford, Michael C. (Livermore, CA)

1988-01-01T23:59:59.000Z

100

Spontaneous polarization-vector-reorientation photorefractive effect in ferroelectric liquid crystals  

SciTech Connect

The photorefractive effect of a ferroelectric liquid crystal doped with a photoconductive compound was investigated. The photorefractive effect appeared only at the temperature at which the sample exhibits ferroelectricity. The refractive index grating formation time was measured to be {similar_to}30ms. In the ferroelectric phase, reorientation of the spontaneous polarization vector was found to be induced by the internal space-charge field. {copyright} 2001 American Institute of Physics.

Sasaki, Takeo; Kino, Yuji; Shibata, Minoru; Mizusaki, Naoko; Katsuragi, Atsushi; Ishikawa, Yuichi; Yoshimi, Takeshi

2001-06-25T23:59:59.000Z

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


101

Submillisecond-response polymer network liquid crystal phase modulators at 1.06-lm wavelength  

E-Print Network (OSTI)

Submillisecond-response polymer network liquid crystal phase modulators at 1.06-lm wavelength Jie modulator is demonstrated at k ¼ 1.06 lm wavelength. A decay time of 117 ls for 2p phase modulation-response and scattering-free PNLC phase modulator at k ¼ 1.06 lm. The measured response time is 117 ls for a 2p phase

Wu, Shin-Tson

102

Instabilities induced by Light in Liquid Crystal Cells with a Photo-Responsive Substrate  

E-Print Network (OSTI)

Instabilities are discussed which take place when a nematic liquid crystal (LC) layer, enclosed between a planar reference plate and a photosensitive substrate, is illuminated with polarized light from the reference side ({\\it reverse} geometry). The dependence of the observed effects on the wavelength, polarization direction of the light, and on the thickness of the LC layer is explained by a model based on photoinduced surface torque. The application possibilities of the phenomena are also explored.

T. Tóth-Katona; K. Fodor-Csorba; A. Vajda; I. Jánossy

2014-09-07T23:59:59.000Z

103

Variable optical attenuator with a polymer-stabilized dual-frequency liquid crystal  

E-Print Network (OSTI)

Variable optical attenuator with a polymer-stabilized dual-frequency liquid crystal Yung-Hsun Wu. For the DFLC-based homogeneous cell, we use a low- frequency 1 kHz electric field to drive the VOA and a high-frequency, Xiao Liang, Yan-Qing Lu, Fang Du, Yi-Hsin Lin, and Shin-Tson Wu A transmission-type variable optical

Wu, Shin-Tson

104

Light-induced rotation of dye-doped liquid crystal droplets  

E-Print Network (OSTI)

We investigate both theoretically and experimentally the rotational dynamics of micrometric droplets of dye-doped and pure liquid crystal induced by circularly and elliptically polarized laser light. The droplets are dispersed in water and trapped in the focus of the laser beam. Since the optical torque acting on the molecular director is known to be strongly enhanced in light-absorbing dye-doped materials, the question arises whether a similar enhancement takes place also for the overall optical torque acting on the whole droplets. We searched for such enhancement by measuring and comparing the rotation speed of dye-doped droplets induced by a laser beam having a wavelength either inside or outside the dye absorption band, and also comparing it with the rotation of pure liquid crystal droplets. No enhancement was found, confirming that photoinduced dye effects are only associated with an internal exchange of angular momentum between orientational and translational degrees of freedom of matter. Our result provides also the first direct experimental proof of the existence of a photoinduced stress tensor in the illuminated dye-doped liquid crystal. Finally, peculiar photoinduced dynamical effects are predicted to occur in droplets in which the molecular director is not rigidly locked to the flow, but so far they could not be observed.

C. Manzo; D. Paparo; L. Marrucci; I. Janossy

2007-12-05T23:59:59.000Z

105

Fabrication and characterization of fibers with built-in liquid crystal channels and electrodes for transverse incident-light modulation  

E-Print Network (OSTI)

We report on an all-in-fiber liquid crystal (LC) structure designed for the modulation of light incident transverse to the fiber axis. A hollow cavity flanked by viscous conductors is introduced into a polymer matrix, and ...

Wei, Lei

106

Smectic-A and smectic-C phases and phase transitions in 8? S5 liquid-crystal-aerosil gels  

E-Print Network (OSTI)

High-resolution x-ray scattering studies of the nonpolar thermotropic liquid crystal 4-n-pentylphenylthiol-4?-n-octyloxybenzoate (8? S5) in aerosil gel nanonetworks reveal that the aerosil-induced disorder significantly ...

Garland, Carl W.

107

Increasing the magnetic sensitivity of liquid crystals by rod-like magnetic nanoparticles  

E-Print Network (OSTI)

Magnetic Fr\\'eedericksz transition was studied in ferronematics based on the nematic liquid crystal 4-(trans-4'-n-hexylcyclohexyl)-isothiocyanatobenzene (6CHBT). 6CHBT was doped with rod-like magnetic particles of different size and volume concentration. The volume concentrations of magnetic particles in the prepared ferronematics were $\\phi_1$ = 10$^{-4}$ and $\\phi_2$ = 10$^{-3}$. The structural changes were observed by capacitance measurements that demonstrate a significant influence of the concentration, the shape anisotropy, and/or the size of the magnetic particles on the magnetic response of these ferronematics.

P. Kop?anský; N. Tomašovi?ová; T. Tóth-Katona; N. Éber; M. Timko; V. Závišová; J. Majorošová; M. Raj?ak; J. Jadzyn; X. Chaud

2014-01-08T23:59:59.000Z

108

Liquid crystal terahertz phase shifters with functional indium-tin-oxide nanostructures for biasing and alignment  

SciTech Connect

Indium Tin Oxide (ITO) nanowhiskers (NWhs) obliquely evaporated by electron-beam glancing-angle deposition can serve simultaneously as transparent electrodes and alignment layer for liquid crystal (LC) devices in the terahertz (THz) frequency range. To demonstrate, we constructed a THz LC phase shifter with ITO NWhs. Phase shift exceeding ?/2 at 1.0 THz was achieved in a ?517??m-thick cell. The phase shifter exhibits high transmittance (?78%). The driving voltage required for quarter-wave operation is as low as 5.66?V (rms), compatible with complementary metal-oxide-semiconductor (CMOS) and thin-film transistor (TFT) technologies.

Yang, Chan-Shan [Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Tang, Tsung-Ta [Taiwan Semiconductor Manufacturing Company, Hsinchu, Taiwan (China); Pan, Ru-Pin [Department of Electrophysics, National Chiao Tung University, Hsinchu 30078, Taiwan (China); Yu, Peichen [Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan (China); Pan, Ci-Ling, E-mail: clpan@phys.nthu.edu.tw [Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Frontier Research Center on Fundamental and Applied Science of Matters, Hsinchu 30013, Taiwan (China)

2014-04-07T23:59:59.000Z

109

Light-induced instabilities in photo-oriented liquid crystal cells  

E-Print Network (OSTI)

In a planar liquid crystal sample sandwiched between a photosensitive and a reference plate instabilities occurred, when the cell was illuminated from the reference side. The instabilities were induced both by polarized white light source and monochromatic laser beams. Static and dynamic regimes were found; for laser irradiation dynamic instability was found only in a range of polarization directions. A model, developed for monochromatic excitation, predicts that at certain thicknesses dynamic instability is forbidden. Experiments on a wedge-like cell confirmed this conclusion.

I. Jánossy; K. Fodor-Csorba; A. Vajda; L. O. Palomares; T. Tóth-Katona

2014-01-08T23:59:59.000Z

110

Dual translocation pathways in smectic liquid crystals facilitated by molecular flexibility  

Science Journals Connector (OSTI)

We investigate translocation mechanisms in smectic A liquid crystals (LCs) by a realistic, coarse-grained model of a LC compound comprising a stiff azobenzene core with flexible tails. We observe that the molecules can permeate from one smectic layer to the next via two different mechanisms, with and without significant reorientation, the former being facilitated through transverse interlayer intermediates. This is possible due to the intrinsic flexibility of the molecules. The two processes lead to characteristic signatures in the Van Hove self-correlation function, which can also be observed experimentally.

Biswaroop Mukherjee; Christine Peter; Kurt Kremer

2013-07-16T23:59:59.000Z

111

Effects of graphene on electro-optic switching and spontaneous polarization of a ferroelectric liquid crystal  

SciTech Connect

A small quantity of graphene flakes was doped in a ferroelectric liquid crystal (FLC), and the field-induced ferroelectric electro-optic switching was found to be significantly faster in the FLC + graphene hybrid than that of the pure FLC. Further studies revealed that the suspended graphene flakes enhanced the FLC's spontaneous polarization by improving smectic-C ordering resulting from the ?–? electron stacking, and reduced rotation viscosity by trapping some of the free ions of the FLC media. These effects coherently impacted the FLC-switching phenomenon, enabling the FLC molecules to switch faster on reversing an external electric field.

Basu, Rajratan, E-mail: basu@usna.edu [Department of Physics, Soft-matter and Nanomaterials Laboratory, The United States Naval Academy, Annapolis, Maryland 21402 (United States)

2014-09-15T23:59:59.000Z

112

Liquid Crystal Polarimetry for Metastability Exchange Optical Pumping of 3He  

E-Print Network (OSTI)

We detail the design and operation of a compact, discharge light polarimeter for metastability exchange optical pumping of 3He gas near 1 torr under a low magnetic field. The nuclear polarization of 3He can be discerned from its electron polarization, measured via the circular polarization of 668 nm discharge light from an RF excitation. This apparatus measures the circular polarization of this very dim discharge light using a nematic liquid crystal wave retarder (LCR) and a high-gain, transimpedance amplified Si photodiode. We outline corrections required in such a measurement, and discuss contributions to its systematic error.

James D. Maxwell; Charles S. Epstein; Richard G. Milner

2014-07-21T23:59:59.000Z

113

Crystallization and melting of a system of charges in a liquid helium cluster  

SciTech Connect

A system of like (positive or negative) charges forming 'snowballs' or 'bubbles' in a three-dimensional liquid helium cluster is investigated. The charges are confined inside the cluster by an 'image potential' produced by the polarization of liquid helium. The stability of a multiply charged helium cluster is considered. Computer simulations are used to investigate the crystallization and melting of the system of charges depending on the dimensionless parameter T* = k{sub B}T{epsilon}R/e{sup 2}, where k{sub B} is the Boltzmann constant, T is the temperature, {epsilon} is the dielectric constant of liquid helium, R is the cluster radius, and e is a unit charge. Various characteristics, including symmetry groups and moments, have been found for equilibrium configurations of charges in a cluster with N = 1-100 charges. At small N {approx} 10, Thomson's model of successive filling of 'belts' of charges can be used to describe the structure of equilibrium configurations of charges. At large N, the description of the structure formed by charges using the idea of a quasi-two-dimensional 'closed triangular lattice' with topological defects is more adequate. Formally, this description is valid starting from N = 4. The melting of a 'lattice' of charges is described. A number of our conclusions can be generalized to clusters of other noble gases.

Livshits, A. M., E-mail: livshits@isan.troitsk.ru; Lozovik, Yu. E. [Russian Academy of Sciences, Institute of Spectroscopy (Russian Federation)

2007-10-15T23:59:59.000Z

114

Anchoring energy and cell gap effects on liquid crystal response time Xiangyi Nie, Ruibo Lu, Haiqing Xianyu, Thomas X. Wu, and Shin-Tson Wua  

E-Print Network (OSTI)

assumption is that the anchoring energy on LC-substrate surfaces is strong W . However, some LC devices haveAnchoring energy and cell gap effects on liquid crystal response time Xiangyi Nie, Ruibo Lu 2007 The anchoring energy and cell gap effects on liquid crystal response time 0 is analyzed

Wu, Shin-Tson

115

Direct in Situ Observation of Nanoparticle Synthesis in a Liquid Crystal Surfactant Template  

SciTech Connect

Controlled synthesis of nanostructures is essential for many applications, from energy storage/generation and catalysis to semiconductor and biomedical devices. Normally, nanostructures are characterized after synthesis and growth mechanisms are assumed. Here we show the first direct observation of nanoparticle synthesis in a liquid crystal surfactant template using an electron microscope fluid stage. The nanoparticles first sinter (to ~5nm), then grow connections to each other around the micelles to form clusters. Upon reaching a critical size (>10-15nm), the clusters become highly mobile in the template, displacing micelles to form spherical nanoparticles. This ability to observe and understand fundamental growth mechanisms on the nanoscale in real time and in aqueous environments will impact every branch of nanoscience where precise control over nanostructure is essential. Pacific Northwest National Laboratory is operated by Battelle for the US Department of Energy.

Parent, Lucas R.; Robinson, David R.; Woehl, Taylor J.; Ristenpart, William D.; Evans, James E.; Browning, Nigel D.; Arslan, Ilke

2012-04-24T23:59:59.000Z

116

Electro-optical memory of a nematic liquid crystal doped by multi-walled carbon nanotubes  

E-Print Network (OSTI)

A pronounced irreversible electro-optical response (memory effect) has been recently observed for nematic liquid crystal (LC) EBBA doped by multi-walled carbon nanotubes (MWCNTs) near the percolation threshold of the MWCNTs (0.02-0.05 wt. %). It is caused by irreversible homeotropic-to-planar reorientation of LC in an electric field. This feature is explained by electro-hydrodynamically stimulated dispergation of MWCNTs in LC and by the formation of a percolation MWCNT network which acts as a spatially distributed surface stabilizing the planar state of the LC. This mechanism is confirmed by the absence of memory in the EBBA/MWCNT composites, whose original structure is fixed by a polymer. The observed effect suggests new operation modes for the memory type and bistable LC devices, as well as a method for \\textit{in situ} dispergation of carbon nanotubes in LC cells.

L. Dolgov; O. Yaroshchuk; S. Tomylko; N. Lebovka

2012-10-04T23:59:59.000Z

117

First evidence of anisotropic quenched disorder effects on a smectic liquid crystal confined in porous silicon  

E-Print Network (OSTI)

We present a neutron scattering analysis of the structure of the smectic liquid crystal octylcyanobiphenyl (8CB) confined in one-dimensional nanopores of porous silicon films (PS). The smectic transition is completely suppressed, leading to the extension of a short-range ordered smectic phase aligned along the pore axis. It evolves reversibly over an extended temperature range, down to 50 K below the \\textit{N-SmA} transition in pure 8CB. This behavior strongly differs from previous observations of smectics in different one-dimensional porous materials. A coherent picture of this striking behavior requires that quenched disorder effects are invoked. The strongly disordered nature of the inner surface of PS acts as random fields coupling to the smectic order. The one-dimensionality of PS nano-channels offers new perspectives on quenched disorder effects, which observation has been restricted to homogeneous random porous materials so far.

Régis Guégan; Denis Morineau; Claude Loverdo; Wilfried Béziel; Mohammed Guendouz

2005-11-08T23:59:59.000Z

118

Merged vector gratings recorded in a photocrosslinkable polymer liquid crystal film for polarimetry  

SciTech Connect

A merged vector grating, which is holographically fabricated in an anisotropic medium by irradiation with interference light with intensity modulation and polarization modulation, was designed to detect the polarization of light. The merged vector grating is recorded by the interference of two elliptically polarized beams with equal intensities, parallel azimuths, equal ellipticities, and different directions of rotation. We clarified theoretically that the Stokes parameters of the incident light beam are described by the diffraction efficiency of the merged vector grating. Also, to apply this property to formation of a polarimeter without any moving parts or mechanisms, two merged vector gratings with different grating vectors were recorded in a photocrosslinkable polymer liquid crystal film by angle-multiplexed holography. By investigation of the diffraction properties of the gratings obtained, we demonstrated the applicability of the merged vector gratings for use in polarimetry.

Sasaki, Tomoyuki, E-mail: sasaki-tomoy@vos.nagaokaut.ac.jp; Wada, Takumi; Noda, Kohei; Ono, Hiroshi [Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188 (Japan); Kawatsuki, Nobuhiro [Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280 (Japan)

2014-01-14T23:59:59.000Z

119

Numerical Method of Lines for the Relaxational Dynamics of Nematic Liquid Crystals  

E-Print Network (OSTI)

We propose an efficient numerical scheme, based on the method of lines, for solving the Landau-de Gennes equations describing the relaxational dynamics of nematic liquid crystals. Our method is computationally easy to implement, balancing requirements of efficiency and accuracy. We benchmark our method through the study of the following problems: the isotropic-nematic interface, growth of nematic droplets in the isotropic phase and the kinetics of coarsening following a quench into the nematic phase. Our results, obtained through solutions of the full coarse-grained equations of motion with no approximations, provide a stringent test of the de Gennes ansatz for the isotropic - nematic interface, illustrate the anisotropic character of droplets in the nucleation regime and validate dynamical scaling in the coarsening regime.

A. K. Bhattacharjee; Gautam I. Menon; R. Adhikari

2008-04-30T23:59:59.000Z

120

Spatially resolved x-ray studies of liquid crystals with strongly developed bond-orientational order  

E-Print Network (OSTI)

We present an x-ray study of freely suspended hexatic films of the liquid crystal 3(10)OBC. Our results reveal spatial inhomogeneities of the bond-orientational (BO) order in the vicinity of the hexatic-smectic phase transition and the formation of large scale hexatic domains at lower temperatures. Deep in the hexatic phase up to 25 successive sixfold BO order parameters have been directly determined by means of angular x-ray cross-correlation analysis (XCCA). Such strongly developed hexatic order allowed us to determine higher order correction terms in the scaling relation predicted by the multicritical scaling theory over a full temperature range of the hexatic phase existence.

I. A. Zaluzhnyy; R. P. Kurta; E. A. Sulyanova; O. Y. Gorobtsov; A. G. Shabalin; A. V. Zozulya; A. P. Menushenkov; M. Sprung; B. I. Ostrovskii; I. A. Vartanyants

2014-12-03T23:59:59.000Z

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


121

Nanosecond electro-optics of nematic liquid crystal with negative dielectric anisotropy  

E-Print Network (OSTI)

We study a nanosecond electro-optic response of a nematic liquid crystal in a geometry where an applied electric field $\\textbf{E}$ modifies the tensor order parameter but does not change the orientation of the optic axis (director $\\hat{\\textbf{N}}$). We use a nematic with negative dielectric anisotropy with the electric field applied perpendicularly to $\\hat{\\textbf{N}}$. The field changes the dielectric tensor at optical frequencies (optic tensor) due to the following mechanisms: (a) nanosecond creation of the biaxial orientational order; (b) uniaxial modification of the orientational order that occurs over timescales of tens of nanoseconds, and (c) the quenching of director fluctuations with a wide range of characteristic times up to milliseconds. We develop a model to describe the dynamics of all three mechanisms. We design the experimental conditions to selectively suppress the contributions from fluctuations quenching (c) and from the biaxial order effect (a) and thus, separate the contributions of the three mechanisms in the electro-optic response. As a result, the experimental data can be well fitted with the model. The analysis provides a detailed physical picture of how the liquid crystal responds to a strong electric field on a timescale of nanoseconds. This work provides a useful guide in the current search of the biaxial nematic phase. Namely, the temperature dependence of the biaxial susceptibility allows one to estimate the temperature of the potential uniaxial-to-biaxial phase transition. An analysis of the fluctuations quenching indicates that on a timescale of nanoseconds, the classic model with constant viscoelastic material parameters might reach its limit of validity. The effect of nanosecond electric modification of the order parameter (NEMOP) can be used in applications in which one needs to achieve ultrafast (nanosecond) changes of optical characteristics.

Volodymyr Borshch; Sergij V. Shiyanovskii; Bing-Xiang Li; Oleg D. Lavrentovich

2014-11-22T23:59:59.000Z

122

Visualization of effect of turbulators on local heat transfer distribution in a 180 degree turn with liquid crystals  

E-Print Network (OSTI)

Liquid crystal experiments have been conducted to study the turbulent heat transfer for fully developed flow of air in a two-pass square channel with two opposite walls roughened with parallel and cross arrays of full ribs and with V-shaped ribs...

Rajesh, Gopal

2012-06-07T23:59:59.000Z

123

Thermodynamic Relationships for Bulk Crystalline and Liquid Phases in the Phase-Field Crystal Model  

E-Print Network (OSTI)

We present thermodynamic relationships between the free energy of the phase-field crystal (PFC) model and thermodynamic state variables for bulk phases under hydrostatic pressure. This relationship is derived based on the thermodynamic formalism for crystalline solids of Larch\\'e and Cahn [Larch\\'e and Cahn, Acta Metallurgica, Vol. 21, 1051 (1973)]. We apply the relationship to examine the thermodynamic processes associated with varying the input parameters of the PFC model: temperature, lattice spacing, and the average value of the PFC order parameter, $\\bar{n}$. The equilibrium conditions between bulk crystalline solid and liquid phases are imposed on the thermodynamic relationships for the PFC model to obtain a procedure for determining solid-liquid phase coexistence. The resulting procedure is found to be in agreement with the method commonly used in the PFC community, justifying the use of the common-tangent construction to determine solid-liquid phase coexistence in the PFC model. Finally, we apply the procedure to an eighth-order-fit (EOF) PFC model that has been parameterized to body-centered-cubic ($bcc$) Fe [Jaatinen et al., Physical Review E 80, 031602 (2009)] to demonstrate the procedure as well as to develop physical intuition about the PFC input parameters. We demonstrate that the EOF-PFC model parameterization does not predict stable $bcc$ structures with positive vacancy densities. This result suggests an alternative parameterization of the PFC model, which requires the primary peak position of the two-body direct correlation function to shift as a function of $\\bar{n}$.

Victor W. L. Chan; Nirand Pisutha-Arnond; Katsuyo Thornton

2015-02-06T23:59:59.000Z

124

Prospects of emerging polymer-stabilized blue-phase liquid-crystal displays Linghui Rao (SID Student Member)  

E-Print Network (OSTI)

, the LC response time should be less than ~1 msec which imposes a big challenge to nematic LCDs.3 that the composite is optically isotropic in the voltage-off state.26,27 Our physical models fit experimental data, is subject to an electric field E, the induced birefringence is related to E as19: nind = KE2 , (1) where

Wu, Shin-Tson

125

Large birefringence and polarization holographic gratings formed in photocross-linkable polymer liquid crystals comprising bistolane mesogenic side groups  

SciTech Connect

Polarization gratings with large birefringence are formed in photoreactive polymer liquid crystals with bistolane moiety and terminal cinnamic acid moiety by the use of polarized ultraviolet interference light and subsequent annealing. The polarized ultraviolet light causes the axis-selective photoreaction between the cinnamic acid groups and subsequent annealing induce the reorientation of peripheral molecules without cross-linking along the cross-linked groups. Long bistolane mesogenic moiety exhibits large birefringence in comparison with a biphenyl mesogenic moiety, the value of the induced birefringence in the bistolane mesogenic liquid crystalline (LC) polymer is strongly dependent on both the grating constant and the wavelength of the reconstruction light.

Emoto, Akira; Matsumoto, Taro; Shioda, Tatsutoshi; Ono, Hiroshi [Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188 (Japan); Yamashita, Ayumi; Kawatsuki, Nobuhiro [Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2201 (Japan)

2009-10-01T23:59:59.000Z

126

A study of degradation of indium tin oxide thin films on glass for display applications  

Science Journals Connector (OSTI)

Indium tin oxide (ITO) has been widely used in liquid crystal displays (LCD). Contamination and moisture have proved to have the adverse effect of causing ITO corrosion/degradation. The purpose of this paper is to determine if scratching the surface ... Keywords: Accelerated degradation test, ITO corrosion, ITO degradation, Scratching

W. S. Leung; Y. C. Chan; S. M. Lui

2013-01-01T23:59:59.000Z

127

Light-induced pitch transitions in photosensitive cholesteric liquid crystals: Effects of anchoring energy  

E-Print Network (OSTI)

We experimentally study how the cholesteric pitch, $P$, depends on the equilibrium one, $P_0$, in planar liquid crystal (LC) cells with both strong and semistrong anchoring conditions. The cholesteric phase was induced by dissolution in the nematic LC the right-handed chiral dopant 7-DHC (7-dehydrocholesterol, provitamin $D_3$) which transforms to left-handed tachysterol under the action of UV irradiation at the wavelength of 254 nm. By using the model of photoreaction kinetics we obtain dependencies of isomers concentrations and thus the equilibrium pitch on UV irradiation dose. The cholesteric pitch was measured as a function of irradiation time using the polarimetry method. In this method, the pitch is estimated from the experimental data on the irradiation time dependence of the ellipticity of light transmitted through the LC cells. It is found that the resulting dependence of the twist parameter, $2 D/P$ ($D$ is the cell thickness), on the free twisting number parameter, $2 D/P_0$, shows the jump-like behaviour and agrees well with the known theoretical results for the anchoring potential of the Rapini-Papoular form.

Tetiana N. Orlova; Roman I. Iegorov; Alexei D. Kiselev

2013-10-15T23:59:59.000Z

128

Electronically smecticlike liquid-crystal phase in a nearly half-doped manganite  

SciTech Connect

We use neutron scattering to study the spin and charge-orbital ordering (CO-OO) in the nearly half-doped perovskite manganite Pr{sub 0.55}(Ca{sub 0.8}Sr{sub 0.2}){sub 0.45}MnO{sub 3} (PCSMO). On cooling from room temperature, PCSMO first enters into a CO-OO state below T{sub CO} and then becomes a CE-type long-range ordered antiferromagnet below T{sub N}. At temperatures above T{sub N} but below T{sub CO} (T{sub N}liquid-crystal-like texture with ferromagnetic (FM) quasi-long-range ordered one-dimensional zigzag chains weakly coupled antiferromagnetically. Such a magnetic smecticlike phase results directly from the spin-orbit interaction and demonstrates the presence of textured 'electronic soft' phases in doped Mott insulators.

Ye, F. [Center for Neutron Scattering, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393 (United States); Fernandez-Baca, J.A. [Center for Neutron Scattering, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393 (United States); Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200 (United States); Dai Pengcheng [Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200 (United States); Center for Neutron Scattering, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393 (United States); Lynn, J.W. [NIST Center for Neutron Research, Gaithersburg, Maryland 20899 (United States); Kawano-Furukawa, H. [Department of Physics, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610 (Japan); Yoshizawa, H. [Neutron Science Laboratory, ISSP, University of Tokyo, Tokai, Ibaraki, 319-1106 (Japan); Tomioka, Y. [Correlated Electron Research Center (CERC), Tsukuba 305-0046 (Japan); Tokura, Y. [Correlated Electron Research Center (CERC), Tsukuba 305-0046 (Japan); Department of Applied Physics, University of Tokyo, Tokyo 113-8656 (Japan)

2005-12-01T23:59:59.000Z

129

Colossal Light-Induced Refractive-Index Modulation for Neutrons in Holographic Polymer-Dispersed Liquid Crystals  

SciTech Connect

We report strong diffraction of cold neutrons from an only 30 {mu}m thick holographic polymer-dispersed liquid crystal (H-PDLC) transmission grating. The light-induced refractive-index modulation for neutrons is about 10{sup -6}, i.e., nearly 2 orders of magnitude larger than in the best photo-neutron-refractive materials probed up to now. This makes H-PDLCs a promising candidate for fabricating neutron-optical devices.

Fally, Martin; Ellabban, Mostafa A. [Nonlinear Physics Group, Faculty of Physics, Universitaet Wien, Boltzmanngasse 5, A-1090 Vienna (Austria); Drevensek-Olenik, Irena [Nonlinear Physics Group, Faculty of Physics, Universitaet Wien, Boltzmanngasse 5, A-1090 Vienna (Austria); Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, and J. Stefan Institute, Jamova 39, SI 1001 Ljubljana (Slovenia); Pranzas, Klaus P.; Vollbrandt, Juergen [GKSS Forschungszentrum, D-21502 Geesthacht (Germany)

2006-10-20T23:59:59.000Z

130

Use of shear-stress-sensitive, temperature-insensitive liquid crystals for hypersonic boundary-layer transition detection  

SciTech Connect

The use of shear-stress-sensitive, temperature-insensitive (SSS/TI) liquid crystals (LCs) has been evaluated as a boundary-layer transition detection technique for hypersonic flows. Experiments were conducted at Mach 8 in the Sandia National Laboratories Hypersonic Wind Tunnel using a flat plate model at near zero-degree angle of attack over the freestream unit Reynolds number range 1.2-5.8x10{sup 6}/ft. Standard 35mm color photography and Super VHS color video were used to record LC color changes due to varying surface shear stress during the transition process for a range of commercial SSS liquid crystals. Visual transition data were compared to an established method using calorimetric surface heat-transfer measurements to evaluate the LC technique. It is concluded that the use of SSS/TI LCs can be an inexpensive, safe, and easy to use boundary-layer transition detection method for hypersonic flows. However, a valid interpretation of the visual records requires careful attention to illumination intensity levels and uniformity, lighting and viewing angles, some prior understanding of the general character of the flow, and the selection of the appropriate liquid crystal for the particular flow conditions.

Aeschliman, D.P.; Croll, R.H.; Kuntz, D.W.

1997-04-01T23:59:59.000Z

131

Band-tunable color cone lasing emission based on dye-doped cholesteric liquid crystals with various pitches and a pitch gradient  

Science Journals Connector (OSTI)

This study elucidates, for the first time, a novel band-tunable color cone lasing emission (CCLE) based on dye-doped cholesteric liquid crystal (DDCLC) films with various pitches....

Lee, C -R; Lin, S -H; Yeh, H -C; Ji, T -D

2009-01-01T23:59:59.000Z

132

Beam coupling in hybrid photorefractive inorganic-cholesteric liquid crystal cells: Impact of optical rotation  

SciTech Connect

We develop a theoretical model to describe two-beam energy exchange in a hybrid photorefractive inorganic-cholesteric cell. A cholesteric layer is placed between two inorganic substrates. One of the substrates is photorefractive (Ce:SBN). Weak and strong light beams are incident on the hybrid cell. The interfering light beams induce a periodic space-charge field in the photorefractive window. This penetrates into the cholesteric liquid crystal (LC), inducing a diffraction grating written on the LC director. In the theory, the flexoelectric mechanism for electric field-director coupling is more important than the LC static dielectric anisotropy coupling. The LC optics is described in the Bragg regime. Each beam induces two circular polarized waves propagating in the cholesteric cell with different velocities. The model thus includes optical rotation in the cholesteric LC. The incident light beam wavelength can fall above, below, or inside the cholesteric gap. The theory calculates the energy gain of the weak beam, as a result of its interaction with the pump beam within the diffraction grating. Theoretical results for exponential gain coefficients are compared with experimental results for hybrid cells filled with cholesteric mixture BL038/CB15 at different concentrations of chiral agent CB15. Reconciliation between theory and experiment requires the inclusion of a phenomenological multiplier in the magnitude of the director grating. This multiplier is cubic in the space-charge field, and we provide a justification of the q-dependence of the multiplier. Within this paradigm, we are able to fit theory to experimental data for cholesteric mixtures with different spectral position of cholesteric gap relative to the wavelength of incident beams, subject to the use of some fitting parameters.

Reshetnyak, V. Yu.; Pinkevych, I. P. [Physics Faculty, National Taras Shevchenko University of Kyiv, Volodymyrs’ka Street 64, Kyiv 01601 (Ukraine); Sluckin, T. J. [Division of Mathematical Sciences, University of Southampton, Highfield, Southampton SO17 1BJ (United Kingdom); Cook, G.; Evans, D. R. [Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433 (United States)

2014-03-14T23:59:59.000Z

133

Temperature dependence of the crystal-liquid interfacial free energy and the endpoint of the melting line  

SciTech Connect

The crystal–liquid interfacial free energy ? has been calculated as a function of the crystal orientation in a molecular dynamics experiment in a system of Lennard-Jones (LJ) particles with a cutoff radius of the potential r{sub c}{sup *}=r{sub c}/?=6.78 at a triple-point temperature T{sub t}{sup *}=k{sub B}T{sub t}/?=0.692 and temperatures above (in the region of the stable coexistence of liquid and solid phases) and below (metastable continuation of the coexistence curve of liquid and solid phases) the temperature T{sub t}{sup *}. At T{sup *}=T{sub t}{sup *}, for determining ? use was made of the method of cleaving potential. The temperature dependence of ? on the crystal–liquid coexistence curve has been determined by the Gibbs-Cahn thermodynamic integration method. In the region of stable phase coexistence (T{sup *}>T{sub t}{sup *}) good agreement with the data of Davidchack and Laird [J. Chem. Phys. 118, 7651 (2003)] has been obtained with respect to the character of the temperature dependence of ? and the orientation anisotropy. In the region of metastable phase coexistence (T{sup *}

Baidakov, Vladimir G., E-mail: bai@itp.uran.ru; Protsenko, Sergey P.; Tipeev, Azat O. [Institute of Thermophysics, Ural Branch of the Russian Academy of Sciences, Amundsen Street 106, 620016 Ekaterinburg (Russian Federation)] [Institute of Thermophysics, Ural Branch of the Russian Academy of Sciences, Amundsen Street 106, 620016 Ekaterinburg (Russian Federation)

2013-12-14T23:59:59.000Z

134

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

SciTech Connect

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.

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)

2005-01-10T23:59:59.000Z

135

Heat transfer measurements in a two-pass square duct via a transient liquid crystal image method  

E-Print Network (OSTI)

by JESUS ARTURO LUNA Submitted to Texas A & M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by: Je-Chin Han (Chair of Committee) duujJLXJl Malcolm Andrews (Member...) Jesus Arturo Luna, B.S., New Mexico State University Chair of Advisory Committee: Dr. J.C. Han In this research air flow transient heat transfer in a two-pass channel via thermochromic liquid crystals is studied. A n 180? turn and rib roughened...

Luna, Jesus Arturo

2000-01-01T23:59:59.000Z

136

Ethnological Displays  

Science Journals Connector (OSTI)

...236). tionary and ethnological displays. Maior But tme midway concessionanes were there John Wesley Powell collected for the...that from Europe and they were international. featured a sham battle every dav between The book gives verv little attention to the...

BURTON BENEDICT

1986-01-10T23:59:59.000Z

137

Light-Controlled Alignment of Cholesteric Liquid Crystals on Photosensitive Materials  

E-Print Network (OSTI)

of Sciences of Ukraine, Kyiv, Ukraine D.-H. Kim S.-K. Park S.-B. Kwon School of Display Engineering, Hoseo of Sciences of Ukraine, Pr. Nauki 46, Kyiv, 03028, Ukraine. E-mail: ouskova@iop.kiev.ua Mol. Cryst. Liq. Cryst

Reznikov, Yuri

138

Spin liquid in a single crystal of the frustrated diamond lattice antiferromagnet CoAl2O4  

Science Journals Connector (OSTI)

We study the evidence for spin liquid in the frustrated diamond lattice antiferromagnet CoAl2O4 by means of single-crystal neutron scattering in zero and applied magnetic fields. The magnetically ordered phase appearing below TN=8 K remains nonconventional down to 1.5 K. The magnetic Bragg peaks at the q=0 positions are broad and their line shapes have strong Lorentzian contributions. Additionally, the peaks are connected by weak diffuse streaks oriented along the ?111? directions. The observed short-range magnetic correlations are explained within the spiral spin-liquid model. The specific shape of the energy landscape of the system, with an extremely flat energy minimum around q=0 and many low-lying excited spiral states with q=?111?, results in thermal population of this manifold at finite temperatures. The agreement between the experimental results and the spiral spin-liquid model is only qualitative, indicating that microstructure effects might be important to achieve quantitative agreement. Application of a magnetic field significantly perturbs the spiral spin-liquid correlations. The magnetic peaks remain broad but acquire more Gaussian line shapes and increase in intensity. The 1.5 K static magnetic moment increases from 1.58 ?B/Co at zero field to 2.08 ?B/Co at 10 T. The magnetic excitations appear rather conventional at zero field. Analysis using classical spin-wave theory yields values of the nearest- and next-nearest-neighbor exchange parameters J1=0.92(1) meV and J2=0.101(2) meV and an additional anisotropy term D=?0.0089(2) meV for CoAl2O4. In the presence of a magnetic field, the spin excitations broaden considerably and become nearly featureless at the zone center.

O. Zaharko; N. B. Christensen; A. Cervellino; V. Tsurkan; A. Maljuk; U. Stuhr; C. Niedermayer; F. Yokaichiya; D. N. Argyriou; M. Boehm; A. Loidl

2011-09-06T23:59:59.000Z

139

Thermodynamically Stable Dispersions of Quantum Dots in a Nematic Liquid Crystal  

E-Print Network (OSTI)

*, State Scientific Institution "Institute for Single Crystals", NAS of Ukraine, 60, Lenin Ave., Kharkov, 61001, Ukraine Faculty of Pharmacy, UMR CNRS 7213, University of Strasbourg, Strasbourg, France § Institute of Physics, NAS of Ukraine, 46, Nauki Ave., Kiev, 03039, Ukraine North Carolina A&T State

Reznikov, Yuri

140

Fundamentals of phase-only liquid crystal on silicon (LCOS) devices  

E-Print Network (OSTI)

are usually called LCOS spatial light modulators (SLMs). The architecture of LCOS devices is similar to conventional LC devices except that a silicon backplane constitutes one of the substrates (Figure 1). The silicon CMOS backplane consists of the electronic... transform processors make the holographic projection technology a practical proposition. Alps Electric UK and Light Blue Optics95 are two companies currently developing holographic projec- tors, automotive head-up displays, interactive projectors, etc...

Zhang, Zichen; You, Zheng; Chu, Daping

2014-10-24T23:59:59.000Z

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


141

Measurement of the viscoelastic properties of liquid crystals using the piezoelectric ultrasonic composite oscillator  

E-Print Network (OSTI)

and encouragements. It was a pleasure to meet Dr. Stuart I. Smedley who shared with me his personal experience and new ideas in the development and use of the PUCO for studying the viscoelastic properties of liquids. Dehors A. Fairbrother and Lloyd Steven Cook...

Seet, Tiong Boon

2012-06-07T23:59:59.000Z

142

Remarkable optics of short-pitch deformed helix ferroelectric liquid crystals: symmetries, exceptional points and polarization-resolved angular patterns  

E-Print Network (OSTI)

In order to explore electric-field-induced transformations of polarization singularities in the polarization-resolved angular (conoscopic) patterns emerging after deformed helix ferroelectric liquid crystal (DHFLC) cells with subwavelength helix pitch, we combine the transfer matrix formalism with the results for the effective dielectric tensor of biaxial FLCs evaluated using an improved technique of averaging over distorted helical structures. Within the framework of the transfer matrix method, we deduce a number of symmetry relations and show that the symmetry axis of L lines (curves of linear polarization) is directed along the major in-plane optical axis which rotates under the action of the electric field. When the angle between this axis and the polarization plane of incident linearly polarized light is above its critical value, the C points (points of circular polarization) appear in the form of symmetrically arranged chains of densely packed star-monstar pairs. We also emphasize the role of phase sing...

Kiselev, Alexei D

2014-01-01T23:59:59.000Z

143

Polarization gratings in the short-pitch approximation: electro-optics of deformed helix ferroelectric liquid crystals  

E-Print Network (OSTI)

Electro-optical properties of deformed helix ferroelectric liquid crystal (DHFLC) cells are studied by using a general theoretical approach to polarization gratings in which the transmission and reflection matrices of diffraction orders are explicitly related to the evolution operator of equations for the Floquet harmonics. In the short-pitch approximation, a DHFLC cell is shown to be optically equivalent to a uniformly anisotropic biaxial layer where one of the optical axes is normal to the substrates. For in-plane anisotropy, orientation of the optical axes and birefringence are both determined by the voltage applied across the cell and represent the parameters that govern the transmittance of normally incident light passing through crossed polarizers. We calculate the transmittance as a function of the applied voltage and compare the computed curves with the experimental data. The theoretical and experimental results are found to be in good agreement.

Alexei D. Kiselev; Eugene P. Pozhidaev; Vladimir G. Chigrinov; Hoi-Sing Kwok

2010-11-19T23:59:59.000Z

144

Measurement and Assignment of Long-Range C-H Dipolar Couplings in Liquid Crystals by Two-Dimensional NMR Spectroscopy  

E-Print Network (OSTI)

-local-field (SLF) spectroscopy7,8 in combination with variable-angle spinning of the liquid crystal.9-12 In the separa- tion of the C-H dipolar couplings according to the 13C chemical shifts, the traditional SLF splittings, the SLF spectrum of a carbon coupled to N protons exhibits up to 2N lines, even when homonuclear

Hong, Mei

145

Measurement of Carbon?Proton Dipolar Couplings in Liquid Crystals Using DAPT  

Science Journals Connector (OSTI)

DAPT can be utilized either as a proton encoded local field (PELF) technique or as a separated local field (SLF) technique, which means that the heteronuclear dipolar coupling can be obtained by following either the evolution of the abundant spin like proton (PELF) or that of the rare spin such as carbon (SLF). ... We have demonstrated the use of DAPT both as a PELF and as a SLF technique on an oriented liquid crystalline sample at room temperature and also have compared its performance with PISEMA. ... DAPT as PELF and SLF Pulse Sequence ...

S. Jayanthi; P. K. Madhu; K. V. Ramanathan

2008-10-09T23:59:59.000Z

146

Order-parameter-aided temperature-accelerated sampling for the exploration of crystal polymorphism and solid-liquid phase transitions  

SciTech Connect

The problem of predicting polymorphism in atomic and molecular crystals constitutes a significant challenge both experimentally and theoretically. From the theoretical viewpoint, polymorphism prediction falls into the general class of problems characterized by an underlying rough energy landscape, and consequently, free energy based enhanced sampling approaches can be brought to bear on the problem. In this paper, we build on a scheme previously introduced by two of the authors in which the lengths and angles of the supercell are targeted for enhanced sampling via temperature accelerated adiabatic free energy dynamics [T. Q. Yu and M. E. Tuckerman, Phys. Rev. Lett. 107, 015701 (2011)]. Here, that framework is expanded to include general order parameters that distinguish different crystalline arrangements as target collective variables for enhanced sampling. The resulting free energy surface, being of quite high dimension, is nontrivial to reconstruct, and we discuss one particular strategy for performing the free energy analysis. The method is applied to the study of polymorphism in xenon crystals at high pressure and temperature using the Steinhardt order parameters without and with the supercell included in the set of collective variables. The expected fcc and bcc structures are obtained, and when the supercell parameters are included as collective variables, we also find several new structures, including fcc states with hcp stacking faults. We also apply the new method to the solid-liquid phase transition in copper at 1300 K using the same Steinhardt order parameters. Our method is able to melt and refreeze the system repeatedly, and the free energy profile can be obtained with high efficiency.

Yu, Tang-Qing, E-mail: tangqing.yu@nyu.edu; Vanden-Eijnden, Eric, E-mail: eve2@cims.nyu.edu [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States); Chen, Pei-Yang; Chen, Ming [Department of Chemistry, New York University, New York, New York 10003 (United States); Samanta, Amit [Program in Applied and Computational Mathematics, Princeton University, Princeton, New Jersey 08544, USA and Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Tuckerman, Mark, E-mail: mark.tuckerman@nyu.edu [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States); Department of Chemistry, New York University, New York, New York 10003 (United States); NYU-ECNU Center for Computational Chemistry at NYU Shanghai, Shanghai 200062 (China)

2014-06-07T23:59:59.000Z

147

Atomic Level Green-Kubo Stress Correlation Function for a Model Crystal: An Insight into Molecular Dynamics Results on a Model Liquid  

E-Print Network (OSTI)

In order to get insight into the connection between the vibrational dynamics and the atomic level Green-Kubo stress correlation function in liquids we consider this connection in a model crystal instead. Of course, vibrational dynamics in liquids and crystals are quite different and it is not expected that the results obtained on a model crystal should be valid for liquids. However, these considerations provide a benchmark to which the results of the previous molecular dynamics simulations can be compared. Thus, assuming that vibrations are plane waves, we derive analytical expressions for the atomic level stress correlation functions in the classical limit and analyze them. These results provide, in particular, a recipe for analysis of the atomic level stress correlation functions in Fourier space and extraction of the wavevector and frequency dependent information. We also evaluate the energies of the atomic level stresses. Obtained energies are significantly smaller than the energies that were obtained in MD simulations of liquids previously. This result suggests that the average energies of the atomic level stresses in liquids and glasses are largely determined by the structural disorder. We discuss this result in the context of equipartition of the atomic level stress energies. Analysis of the previously published data suggests that it is possible to speak about configurational and vibrational contributions to the average energies of the atomic level stresses in a glass state. However, this separation in a liquid state is problematic. We also consider peak broadening in the pair distribution function with increase of distance. We find that peak broadening (by ~40%) occurs due to the transverse vibrational modes, while contribution from the longitudinal modes does not change with distance. Finally, we introduce and consider atomic level transverse current correlation function.

V. A. Levashov

2014-03-25T23:59:59.000Z

148

Remarkable optics of short-pitch deformed helix ferroelectric liquid crystals: symmetries, exceptional points and polarization-resolved angular patterns  

E-Print Network (OSTI)

In order to explore electric-field-induced transformations of polarization singularities in the polarization-resolved angular (conoscopic) patterns emerging after deformed helix ferroelectric liquid crystal (DHFLC) cells with subwavelength helix pitch, we combine the transfer matrix formalism with the results for the effective dielectric tensor of biaxial FLCs evaluated using an improved technique of averaging over distorted helical structures. Within the framework of the transfer matrix method, we deduce a number of symmetry relations and show that the symmetry axis of L lines (curves of linear polarization) is directed along the major in-plane optical axis which rotates under the action of the electric field. When the angle between this axis and the polarization plane of incident linearly polarized light is above its critical value, the C points (points of circular polarization) appear in the form of symmetrically arranged chains of densely packed star-monstar pairs. We also emphasize the role of phase singularities of a different kind and discuss the enhanced electro-optic response of DHFLCs near the exceptional point where the condition of zero-field isotropy is fulfilled.

Alexei D. Kiselev; Vladimir G. Chigrinov

2014-07-14T23:59:59.000Z

149

Electrophoresis Gel Quantification with a Flatbed Scanner and Versatile Lighting from a Screen Scavenged from a Liquid Crystal Display (LCD) Monitor  

Science Journals Connector (OSTI)

† Cardiovascular Biomarkers Laboratory, Cardiovascular Research Institute, 30 Medical Drive, Singapore 117609 ... Wing-nuts on the slider mechanism aided in convenient adjustment of the lighting tubes, while positioning with washers as spacers permitted optimal lighting height to be achieved to maximize light uniformity within the lightpipe. ...

Brendan Yeung; Tuck Wah Ng; Han Yen Tan; Oi Wah Liew

2012-01-27T23:59:59.000Z

150

Interaction with deformable displays  

Science Journals Connector (OSTI)

Technological developments in display technologies allow us to explore the design of mobile devices that extend beyond the rigid, flat screen surfaces with which we are familiar. The next generation mobile devices will instead include deformable displays ... Keywords: deformable displays, display surfaces, interaction, shape-changing displays

Jason Alexander; Johan Kildal; Kasper Hornbaek; Viljakaisa Aaltonen; Andrés Lucero; Sriram Subramanian

2012-09-01T23:59:59.000Z

151

44.3 / S. Valyukh 44.3: A Liquid Crystal Lens with Non-uniform Anchoring Energy  

E-Print Network (OSTI)

adjusting processes are, as a rule, complicated and bulky. That is the reason for developing a new type displays, includes two interrelated steps: finding the director distribution and calculation of the light

152

The crystal–liquid interface of a body?centered?cubic?forming substance: Computer simulations of the r ? 6 potential  

E-Print Network (OSTI)

(the bulk density change).27 For the (100) interface this 10--90 width is measured to be about 5.7a (just over 8 lattice planes). The variation of the diffusion constant through the in­ terface was calculated by dividing the z direction into 30 bins..., and were found not to differ measurably. The limiting liquid value of D (0.011 59 ± 0.000 01) was obtained in a separate 686 parti­ cle simulation of the bulk liquid. Note that bulk liquid diffu­ sion constants are known to be somewhat system size depen...

Laird, Brian Bostian; Haymet, A. D. J.

1989-09-01T23:59:59.000Z

153

Compatibility of Display Products with Stereoscopic Display Methods Andrew J. Woods  

E-Print Network (OSTI)

for Marine Science & Technology, Curtin University of Technology, GPO Box U1987, Perth 6845 AUSTRALIA surface. The observer wears a pair of liquid crystal shutter (LCS) 3D glasses whose lenses switch

154

Quantum phase transition between the Z2 spin liquid and valence bond crystals on a triangular lattice  

Science Journals Connector (OSTI)

We study the quantum phase transition between the Z2 spin liquid and valence bond solid (VBS) orders on a triangular lattice. With a fully isotropic triangular lattice, the transition from a columnar or resonating-plaquette VBS order can either be first order or there could be two transitions with an intermediate phase. If the transition splits into two, then the Z2 spin liquid will first experience a first-order q=3 Potts transition to a new nematic Z2 spin liquid that breaks the 2?/3 lattice rotation symmetry (but retain translation symmetry, unlike the VBS states). The second transition will then take this new nematic Z2 spin liquid to a columnar or resonating-plaquette VBS state through a second-orderthree-dimensional (3D) XY* transition. On a distorted triangular lattice, the degeneracy between some of the different columnar VBS orders is lifted, and the phase transition can reduce to a single 3D XY* transition.

Kevin Slagle and Cenke Xu

2014-03-21T23:59:59.000Z

155

Use of polarization inversion for resolution of small dipolar couplings in SLF-2D NMR experiments – an application to liquid crystals  

Science Journals Connector (OSTI)

A density matrix description of the polarization inversion process is presented. Such a description enables the visualization of the role of the process in the suppression of zero-frequency peaks in SLF-2D NMR experiments based on the dipolar oscillations during cross-polarization. It is shown that during this process, a doubling of the amplitude of the oscillatory component occurs accompanied by a reduction of the initial intensity of the non-oscillatory component to zero. This significantly reduces the zero-frequency component and in the case of a liquid crystal studied, enables several small dipolar couplings to be resolved and interpreted in terms of the molecular structure and order.

Neeraj Sinha; K.V Ramanathan

2000-01-01T23:59:59.000Z

156

Analysis of enantiotopic discrimination in the NMR spectra of prochiral solutes in chiral liquid crystals by symmetry factorization of the Saupe ordering matrix  

Science Journals Connector (OSTI)

The enantiotopic discrimination in the NMRspectrum of prochiral molecules dissolved in chiral liquid crystals (CLCs) is governed by the ordering of the solute molecules. The lifting of the spectral degeneracy of enantiotopic sites in such solvents stems from the nonequivalence in their effective ordering. This in turn is brought about by a change in the directions (or the equivalence) of the principal axes of their ordering tensor relative to those in achiral liquid crystals. This discrimination mechanism can only occur for solute molecules belonging to a limited number of (“allowed”) improper point groups viz. D 2 d C 2 v C s and S 4 [D. Merlet J. W. Emsley P. Lesot and J. Courtieu J. Chem. Phys.111 6890 (1999)]. In this work it is shown that the ordering tensor of such prochiral solutes in CLC S CLC and likewise the tensors T k describing the anisotropic magneticresonance interactions of enantiotopic pairs can be partitioned into symmetric and antisymmetric (and irrelevant) parts. The NMR results in such solvents can be cast into separate sets of equations depending on either the symmetric or the antisymmetric parts of S CLC and T k . The discrimination observed in such solvents depends only on the latter set of equation while the former applies to the average splitting of enantiotopic pairs as well as to diasterotopic or homotopic sites in the prochiral molecules. The factorization procedure greatly facilitates the analysis of the ordering properties of prochiral solutes in CLC and provides new insight on the discrimination mechanism. In particular it allows correlation between independent enantiotopic partners and the identification of NMR signals belonging to common prosterogenic faces in the molecule. Expressions relating NMR observables with the symmetric and antisymmetric parts of S CLC are derived for each of the four allowed groups. Model examples are presented and discussed.

Philippe Lesot; Christie Aroulanda; Zeev Luz

2009-01-01T23:59:59.000Z

157

Interstitials, Vacancies and Dislocations in Flux-Line Lattices: A Theory of Vortex Crystals, Supersolids and Liquids  

E-Print Network (OSTI)

We study a three dimensional Abrikosov vortex lattice in the presence of an equilibrium concentration of vacancy, interstitial and dislocation loops. Vacancies and interstitials renormalize the long-wavelength bulk and tilt elastic moduli. Dislocation loops lead to the vanishing of the long-wavelength shear modulus. The coupling to vacancies and interstitials - which are always present in the liquid state - allows dislocations to relax stresses by climbing out of their glide plane. Surprisingly, this mechanism does not yield any further independent renormalization of the tilt and compressional moduli at long wavelengths. The long wavelength properties of the resulting state are formally identical to that of the ``flux-line hexatic'' that is a candidate ``normal'' hexatically ordered vortex liquid state.

M. Cristina Marchetti; Leo Radzihovsky

1999-07-01T23:59:59.000Z

158

Display blocks : cubic displays for multi-perspective visualizations  

E-Print Network (OSTI)

This thesis details the design, execution and evaluation of a new type of display technology, known as Display Blocks. Display Blocks are a response to two major limitations of current displays: visualization and interaction. ...

Pla i Conesa, Pol

2012-01-01T23:59:59.000Z

159

Split image optical display  

DOE Patents (OSTI)

A video image is displayed from an optical panel by splitting the image into a plurality of image components, and then projecting the image components through corresponding portions of the panel to collectively form the image. Depth of the display is correspondingly reduced.

Veligdan, James T. (Manorville, NY)

2007-05-29T23:59:59.000Z

160

Computational immersive displays  

E-Print Network (OSTI)

Immersion is an oft-quoted but ill-defined term used to describe a viewer or participant's sense of engagement with a visual display system or participatory media. Traditionally, advances in immersive quality came at the ...

Novy, Daniel E. (Daniel Edward)

2013-01-01T23:59:59.000Z

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


161

Crystallization Behavior of Virgin TR-55 Silicone Rubber Measured Using Dynamic Mechanical Thermal Analysis with Liquid Nitrogen Cooling  

SciTech Connect

Dynamic mechanical thermal analysis (DMTA) of virgin TR-55 silicone rubber specimens was conducted. Two dynamic temperature sweep tests, 25 to -100 C and 25 to -70 to 0 C (ramp rate = 1 C/min), were conducted at a frequency of 6.28 rad/s (1 Hz) using a torsion rectangular test geometry. A strain of 0.1% was used, which was near the upper limit of the linear viscoelastic region of the material based on an initial dynamic strain sweep test. Storage (G{prime}) and loss (G{double_prime}) moduli, the ratio G{double_prime}/G{prime} (tan {delta}), and the coefficient of linear thermal expansion ({alpha}) were determined as a function of temperature. Crystallization occurred between -40 and -60 C, with G{prime} increasing from {approx}6 x 10{sup 6} to {approx}4 x 10{sup 8} Pa. The value of {alpha} was fairly constant before ({approx}4 x 10{sup -4} mm/mm- C) and after ({approx}3 x 10{sup -4} mm/mm- C) the transition, and peaked during the transition ({approx}3 x 10{sup -3} mm/mm- C). Melting occurred around -30 C upon heating.

Small IV, W; Wilson, T S

2010-02-11T23:59:59.000Z

162

Correlated vortex pinning in slightly orthorhombic twinned Ba(Fe1-xCox)2As2 single crystals: Possible shift of the vortex-glass/liquid transition  

SciTech Connect

The interest in twin-boundary (TB) planes as a source of vortex pinning has been recently renewed with the discovery of the new iron-arsenide pnictide superconductors. In the family of compounds Ba(Fe1-xCox)2As2 a structural transition from a tetragonal to orthorhombic lattice takes place for compounds with xcrystals. Using a scaling approach we are able to determine the angular regions where correlated or uncorrelated disorder prevails. In the tetragonal samples (x>xcr) there is no twinning and we find good agreement with the expected scaling function under uncorrelated disorder, with small anisotropy values similar to those reported in the literature. We show that in the orthorhombic samples (xliquid-glass transition temperature.

Bermudez, M. Marziali [Universidad de Buenos Aires; Pasquini, G. [Universidad de Buenos Aires; Budko, Sergey L. [Ames Laboratory; Canfield, Paul C. [Ames Laboratory

2013-02-28T23:59:59.000Z

163

Water an Unusual Liquid; LCLS Provides New Insights | Stanford Synchrotron  

NLE Websites -- All DOE Office Websites (Extended Search)

Water an Unusual Liquid; LCLS Provides New Insights Water an Unusual Liquid; LCLS Provides New Insights Wednesday, November 13, 2013 - 3:00pm SLAC, Redtail Hawk Conference Room 108A Anders Nilsson, SUNCAT The anomalous physical properties of water are responsible for sustaining much of life on earth; for example, water displays a higher heat capacity than common liquids and expands upon freezing. Some of these anomalous physical properties become dramatically enhanced upon supercooling below the freezing point. In particular, extrapolations of the thermal expansion coefficient, isothermal compressibility, heat capacity and correlation length can all be fitted with a power law divergence with the same apparent singularity temperature of about 228 K. Experiments on pure bulk water below about ~240 K have so far been difficult: water crystallization occurs

164

Theory of Elastic Interaction of the Colloidal Particles in the Nematic Liquid Crystal Near One Wall and in the Nematic Cell  

E-Print Network (OSTI)

We apply the method developed in Ref. [S.B.Chernyshuk and B.I.Lev, Phys.Rev.E, \\textbf{81}, 041701 (2010)] for theoretical investigation of colloidal elastic interactions between axially symmetric particles in the confined nematic liquid crystal (NLC) near one wall and in the nematic cell with thickness $L$. Both cases of homeotropic and planar director orientations are considered. Particularly dipole-dipole, dipole-quadrupole and quadrupole-quadrupole interactions of the \\textit{one} particle with the wall and within the nematic cell are found as well as corresponding \\textit{two particle} elastic interactions. A set of new results has been predicted: the effective power of repulsion between two dipole particles at height $h$ near the homeotropic wall is reduced gradually from inverse 3 to 5 with an increase of dimensionless distance $r/h$; near the planar wall - the effect of dipole-dipole \\textit{isotropic attraction} is predicted for large distances $r>r_{dd}=4.76 h$; maps of attraction and repulsion zones are crucially changed for all interactions near the planar wall and in the planar cell; one dipole particle in the homeotropic nematic cell was found to be shifted by the distance $\\delta_{eq}$ from the center of the cell \\textit{independent} of the thickness $L$ of the cell. The proposed theory fits very well with experimental data for the confinement effect of elastic interaction between spheres in the homeotropic cell taken from [M.Vilfan et al. Phys.Rev.Lett. {\\bf 101}, 237801, (2008)] in the range $1\\div1000 kT$.

S. B. Chernyshuk; B. I. Lev

2011-01-10T23:59:59.000Z

165

Display Size Wireless LAN  

E-Print Network (OSTI)

.) - Security sofware ­ESET Smart Security. No Reuse PC with English OS for this time. PC PC Code Image Brand PC PC Code Image Brand Model F008 Panasonic CF-W2 Pentium733 M 1.10GHz 256MB 40GB 12.1 inch 1.0kg System Memory HDD Display Size Weight OS Accessory LAN Wireless LAN Remarks PC PC Code Image Brand

Katsumoto, Shingo

166

PHOTOALIGNMENT OF LIQUID CRYSTALS PHOTOALIGNMENT OF LIQUID CRYSTALS  

E-Print Network (OSTI)

. Acad. of Sci. of Ukraine (46, Prosp. Nauky, Kyiv 03028, Ukraine; e-mail: boyarchyk. nina@ gmail. com ) 2Uzhgorod National University (46, Pidhirna Str., Uzhgorod 88000, Ukraine) PACS 78.15.+e, 61.30.Gd c

Reznikov, Yuri

167

Constancy of built-in luminance meter measurements in diagnostic displays  

SciTech Connect

Purpose: Liquid crystal displays used to interpret medical images are often equipped with built-in luminance meters to evaluate luminance response and Grayscale Standard Display Function conformance. This work evaluates agreement between luminance reported by the built-in meters and external measurements. Methods: The white level luminance was measured using a built-in meter and an external meter for 93 primary review workstations (Models MFGD 3420 and MDCG 3120-CB) with between 117 and 49?336 backlight hours (BLH). Measured luminance values were compared viat-test for displays with less than 25?000 BLH and those with more than 25?000 BLH. Bias between meters was also evaluated. Changes in luminance uniformity with increasing backlight hours were explored by determining the maximum luminance deviation (MLD) for subsets of these displays with less than 800 BLH and greater than 35?000 BLH. Results: The mean difference between built-in and external luminance measurements was 5.84% and 38.92% for displays with less than 25?000 and greater than 25?000 BLH, respectively, with a statistically significant difference in the means (p < 0.001). For displays with low BLH, a statistically significant bias was observed (p < 0.001) between built-in and external measurements. A high degree of correlation was observed between measurements made with two separate external meters (r = 0.999). The mean MLD was 9.5% and 11.2% for MDCG 3120-CB displays with less than 800 and greater than 35?000 BLH, respectively. The difference in the mean values was not statistically significant (p < 0.001). Conclusions: Disagreement between the white level luminance measured using the built-in and external meter increased with BLH. Consequently, reliance on values reported by the built-in luminance meter may result in a reduction in image contrast with time. Recommendations have been proposed regarding luminance response testing and corrective action for failing displays.

Silosky, M., E-mail: michael.silosky@ucdenver.edu; Marsh, R. M. [Department of Radiology, University of Colorado, School of Medicine Aurora, Colorado 80045 (United States)] [Department of Radiology, University of Colorado, School of Medicine Aurora, Colorado 80045 (United States)

2013-12-15T23:59:59.000Z

168

Laser illuminated flat panel display  

SciTech Connect

A 10 inch laser illuminated flat panel Planar Optic Display (POD) screen has been constructed and tested. This POD screen technology is an entirely new concept in display technology. Although the initial display is flat and made of glass, this technology lends itself to applications where a plastic display might be wrapped around the viewer. The display screen is comprised of hundreds of planar optical waveguides where each glass waveguide represents a vertical line of resolution. A black cladding layer, having a lower index of refraction, is placed between each waveguide layer. Since the cladding makes the screen surface black, the contrast is high. The prototype display is 9 inches wide by 5 inches high and approximately I inch thick. A 3 milliwatt HeNe laser is used as the illumination source and a vector scanning technique is employed.

Veligdan, J.T.

1995-12-31T23:59:59.000Z

169

LARGE DISPLAY RESEARCH As large displays become more affordable, researchers  

E-Print Network (OSTI)

-hung displays. A precipitous price drop has also occurred in the last few years, and the average computer are investigating their effects on productivity, and techniques for making the large display user experience more effective. Recent work has demonstrated significant productivity benefits, but has also identified numerous

Rajamani, Sriram K.

170

Improving the reliability of electronic paper display using FMEA and Taguchi methods: A case study  

Science Journals Connector (OSTI)

Abstract The increase of e-book readers in recent years has driven the rapid growth of the application market of the electronic paper. The electronic paper is gradually regarded as a substitute for conventional papers because of its suitability for lengthy reading and for energy saving. However, the second generation electronic paper display (EPD) proved to be unreliable in a high-stress environment test, and failed to meet the requirement for mass production. Generally, adjusting the parameters through the trial and error method can delay the development schedule of the new product. Therefore, this study proposes a combined approach integrating failure mode and effect analysis (FMEA) and Taguchi methods to improve the reliability of the thin-film transistor liquid crystal display products. Considering the issues during design and manufacturing phases simultaneously, the proposed approach provides a systematic framework to find the causes of failure, to conduct experiments, and to optimize the process output. The actual case study demonstrates the effectiveness of the proposed approach in improving the EPD reliability. The implementation results show that the mean time between failures has improved from 1867 to 4852 h and the development period has shortened by more than half a year. Further, the case company has earned revenues of approximately $800,000 by fulfilling a rush order.

Chao-Ton Su; Hung-Chun Lin; Po-Wen Teng; Taho Yang

2014-01-01T23:59:59.000Z

171

Improving OLED technology for displays  

E-Print Network (OSTI)

Organic light emitting devices (OLEDs) are brightly emissive, efficient, have fast switching speeds, and are paper-thin in format, propelling their use as an emerging flat panel display technology. However, two primary ...

Yu, Jennifer J. (Jennifer Jong-Hwa), 1980-

2008-01-01T23:59:59.000Z

172

On the Origin of the "Giant" Electroclinic Effect in a "De Vries"-Type Ferroelectric Liquid Crystal Material for Chirality Sensing Applications  

SciTech Connect

W415 is a chiral smectic compound with a remarkably weak temperature dependence of its giant electroclinic effect in the liquid crystalline smectic A* phase. Furthermore it possesses a high spontaneous polarization in the smectic C* phase. The origin of this striking electroclinic effect is the co-occurrence of a de Vries-type ordering with a weak first-order tilting transition (see the synchroton X-ray scattering profiles).

Kapernaum, N.; Walba, D; Korblova, E; Zhu, C; Jones, C; Shen, Y; Clark, N; Giesselmann, F

2009-01-01T23:59:59.000Z

173

Toolkit support for interactive projected displays  

Science Journals Connector (OSTI)

This paper presents a software toolkit designed to enable the rapid development of multimedia-rich, multi-touch enabled, and interactive projection-based displays. For instance: door displays, floor displays, wall displays, and interactive tables. Despite ... Keywords: deployments, experimentation, interaction, interactive surface, multi-touch, projection mapping, toolkit, ubiquitous displays

John Hardy; Jason Alexander

2012-12-01T23:59:59.000Z

174

ROC Study of Four LCD Displays Under Typical Medical Center Lighting Conditions  

Science Journals Connector (OSTI)

Nine observers reviewed a previously assembled library of 320 chest computed radiography (CR) images. Observers participated in four sessions, reading a different 1/4 of the sample on each of four liquid crystal ...

Steve Langer; Ken Fetterly; Jay Mandrekar; Scott Harmsen…

2006-01-01T23:59:59.000Z

175

Optofluidic-Tunable Color Filters And Spectroscopy Based On Liquid...  

NLE Websites -- All DOE Office Websites (Extended Search)

Based On Liquid-Crystal Microflows. Abstract: The integration of color filters with microfluidics has attracted substantial attention in recent years, for on-chip absorption,...

176

Condensation of Self-assembled Lyotropic Chromonic Liquid Crystal Sunset Yellow in Aqueous Solutions Crowded with Polyethylene glycol and Doped with Salt  

E-Print Network (OSTI)

We use optical and fluorescence microscopy, densitometry, cryo-transmission electron microscopy (cryo-TEM), spectroscopy, and synchrotron X-ray scattering, to study the phase behavior of the reversible self-assembled chromonic aggregates of an anionic dye Sunset Yellow (SSY) in aqueous solutions crowded with an electrically neutral polymer polyethylene glycol (PEG) and doped with the salt NaCl. PEG causes the isotropic SSY solutions to condense into a liquid-crystalline region with a high concentration of SSY aggregates, coexisting with a PEG-rich isotropic (I) region. PEG added to the homogeneous nematic (N) phase causes separation into the coexisting N and I domains; the SSY concentration in the N domains is higher than the original concentration of PEG-free N phase. Finally, addition of PEG to the highly concentrated homogeneous N phase causes separation into the coexisting columnar hexagonal (C) phase and I phase. This behavior can be qualitatively explained by the depletion (excluded volume) effects that act at two different levels: at the level of aggregate assembly from monomers and short aggregates and at the level of inter-aggregate packing. We also show a strong effect of a monovalent salt NaCl on phase diagrams that is different for high and low concentrations of SSY. Upon the addition of salt, dilute I solutions of SSY show appearance of the condensed N domains, but the highly concentrated C phase transforms into a coexisting I and N domains. We suggest that the salt-induced screening of electric charges at the surface of chromonic aggregates leads to two different effects: (a) increase of the scission energy and the contour length of aggregates, and (b) decrease of the persistence length of SSY aggregates.

Heung-Shik Park; Shin-Woong Kang; Luana Tortora; Satyendra Kumar; Oleg D. Lavrentovich

2011-04-06T23:59:59.000Z

177

Widget:DisplayDialog | Open Energy Information  

Open Energy Info (EERE)

DisplayDialog DisplayDialog Jump to: navigation, search This widget displays a javascript link, that will pop up a dialog window displaying the contents of the (hidden) element on the page provided. The dialog has a single button that dismisses the dialog. Parameters link - link text to display type - type of content: id - id of element on the page, the contents of that element will be displayed in the dialog sibling - the "id" is the class name of a sibling element, the contents of that element will be displayed in the dialog the widget and sibling should be within a common container (eg div, td), so the sibling element can be found img - the id is an image to be displayed in the dialog NOTE: the first time the dialog is displayed, it will not be centered unless the width is specified

178

Physical Chemistry of Ionic Liquids  

NLE Websites -- All DOE Office Websites (Extended Search)

Ionic liquids are experiencing explosive growth in many areas of research Ionic liquids are experiencing explosive growth in many areas of research and practical applications. They present a wide range of complex physical and chemical behaviors, including ambient vapor pressures ranging from UHV to weakly volatile, a substantial variety of distinct condensed phases, including multiple crystal isomorphs, glasses, amorphous plastic and liquid crystal phases, deep supercooling, and interesting dynamical and transport phenomena. Experiments and simulations have shown that their intrinsic self-organization at the nanoscale is responsible for several of these properties. The symposium will assemble an international array of speakers to discuss ionic liquids in the context of their heterogeneous environments, solvation, dynamics and transport, interfacial properties,

179

Display Blocks: a Set of Cubic Displays for Tangible, Multi-Perspective Data Exploration  

E-Print Network (OSTI)

This paper details the design and implementation of a new type of display technology. Display Blocks are a response to two major limitations of current displays: dimensional compression and physical-digital disconnect. ...

Maes, Pattie

180

Design and Application of LED Beam Display Based on LED Number Display Interface  

Science Journals Connector (OSTI)

This paper introduces a design actualizing LED beam display. The design directly used LED number display interface on single-chip micro- ... to obtain font and bit interface line through LED number display socket...

Hong Deng; Xiuhui Chang; Yanling Zhang

2012-01-01T23:59:59.000Z

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


181

Technology Roadmap for Automotive Flexible Display  

Science Journals Connector (OSTI)

Flexible displays are thin, lightweight, unbreakable, and energy saving, which can be fabricated using the existing display manufacturing facilities, reducing the significant cost of building new facilities. In a...

Byung Sung Yoon; Corey White; Greg Wease…

2014-01-01T23:59:59.000Z

182

D20: Interaction with Multifaceted Display Devices  

E-Print Network (OSTI)

, there has been a rapid progress in the new dis- play technologies, such as electronic ink and organic light-emitting diode (OLED) displays. These technolo- gies potentially allows to make displays with arbitrary pixel

Poupyrev, Ivan

183

REVIEW/SYNTHSE Threat display in birds  

E-Print Network (OSTI)

REVIEW/SYNTHÃ?SE Threat display in birds Peter L. Hurd and Magnus Enquist Abstract: The study of threat displays has long been an area in which theory and empirical work have each spurred the other. A great deal that classical ethologists have accurately described about threat displays still lacks

Hurd, Peter L.

184

Stereographic displays of atmospheric model data  

Science Journals Connector (OSTI)

A system has been developed to display color stereographic time-lapsed sequences of outputs of three-dimensional atmospheric models. Contour lines and wind vectors derived from a model can be overlaid on a geostationary satellite image or displayed with ... Keywords: Computer graphics, Meteorology, Modeling display, Stereography

Mary desJardins; A. Frederick Hasler

1980-07-01T23:59:59.000Z

185

A new Diffractometer for Studies of Liquid-Liquid Interfaces  

SciTech Connect

We have designed a novel, dedicated diffractometer for surface x-ray scattering studies of liquid-liquid and liquid-gas interfaces for the PETRA III High Resolution Diffraction Beamline. Using a double crystal beam-tilter in Bragg geometry this new instrument enables reflectivity and grazing incidence diffraction investigations without moving the sample, which is mechanically decoupled from the rest of the diffractometer. This design minimizes external excitation of surface vibrations, a key prerequisite for studies of liquid interfaces. The instrument operates over the energy range 6.4 keV to 30 keV, the higher energy range being optimal for penetration through liquid sample environments. Vertical momentum transfer up to q{sub z} 2.5 A{sup -1} and lateral q{sub ||} up to 4 A{sup -1}will be available.

Murphy, B. M.; Greve, M.; Runge, B.; Koops, C. T.; Elsen, A.; Stettner, J.; Magnussen, O. M. [IEAP, Christian-Albrechts-Universitaet zu Kiel, D-24098 Kiel (Germany); Seeck, O. H. [PETRA III at DESY, Notkestr. 85, D-22603 Hamburg (Germany)

2010-06-23T23:59:59.000Z

186

Tilt display demonstration: a display surface with multi-axis tilt & actuation  

Science Journals Connector (OSTI)

This demonstration accompanies a full paper accepted into MobileHCI '12 [1]. We demonstrate a new type of actuatable display, called a Tilt Display, that provides visual feedback combined with multi-axis tilting and vertical actuation. Its ability to ... Keywords: actuated displays, nonplanar surface interaction, physical actuation, tilt displays

Jason Alexander; Andrés Lucero; Sriram Subramanian

2012-09-01T23:59:59.000Z

187

Tilt displays: designing display surfaces with multi-axis tilting and actuation  

Science Journals Connector (OSTI)

We present a new type of actuatable display, called Tilt Displays, that provide visual feedback combined with multi-axis tilting and vertical actuation. Their ability to physically mutate provides users with an additional information channel that facilitates ... Keywords: actuated displays, non-planar surface interaction, physical actuation, tilt displays

Jason Alexander; Andrés Lucero; Sriram Subramanian

2012-09-01T23:59:59.000Z

188

Structural characterization of crystals of -glycine during anomalous electrical behaviour  

Science Journals Connector (OSTI)

The separation of antiferroelectric molecular layers in -glycine increases over the temperature range in which these crystals display anomalous electronic properties and is driven by an increase in molecular libration.

Langan, P.

2002-07-30T23:59:59.000Z

189

Highly Ordered Carbon Nanotube Nematic Liquid Crystals  

Science Journals Connector (OSTI)

Nicolas Puech †, Christophe Blanc ‡, Eric Grelet †, Camilo Zamora-Ledezma §, Maryse Maugey †, Cécile Zakri †, Eric Anglaret ‡, and Philippe Poulin †* ... *E-mail: poulin@crpp-bordeaux.cnrs.fr. ... Vigolo, B.; Penicaud, A.; Coulon, C.; Sauder, C.; Pailler, R.; Journet, C.; Bernier, P.; Poulin, P.Macroscopic fibers and ribbons of oriented carbon nanotubes Science 2000, 290 ( 5495) 1331– 1334 ...

Nicolas Puech; Christophe Blanc; Eric Grelet; Camilo Zamora-Ledezma; Maryse Maugey; Ce?cile Zakri; Eric Anglaret; Philippe Poulin

2011-02-04T23:59:59.000Z

190

Liquid crystals of carbon nanotubes and graphene  

Science Journals Connector (OSTI)

...Zamora-Ledezma 5 Nicolas Puech 1 Eric Anglaret 3 4 Philippe Poulin 1 e-mail: poulin@crpp-bordeaux.cnrs.fr 1 CNRS, Universite...the is 1.4. In the experiments reported in Zakri Poulin-[22], the authors found a ratio of phiN/phiI...

2013-01-01T23:59:59.000Z

191

Liquid Crystals in Electric Field Akira ONUKI  

E-Print Network (OSTI)

in an electric field. To treat such problems we need to construct a Ginzburg­Landau free energy including around a neutral colloid particle or emulsion droplet has been extensively studied,5,6) where the surface anchoring of a neutral particle can be achieved for a large radius because the penalty of the Frank free

192

Critical function and success path summary display  

DOE Patents (OSTI)

The content of and hierarchical access to three levels of display pages containing information on critical function monitoring and success path monitoring.

Scarola, Kenneth (Windsor, CT); Jamison, David S. (Windsor, CT); Manazir, Richard M. (North Canton, CT); Rescorl, Robert L. (Vernon, CT); Harmon, Daryl L. (Enfield, CT)

1995-01-01T23:59:59.000Z

193

Public Displays of Efficiency | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

by displaying the collective energy savings of two island neighborhoods. In Connecticut, the Neighbor to Neighbor Energy Challenge encourages homeowners in 14 towns to...

194

DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES...  

Open Energy Info (EERE)

This is the fourth paper in a series on developing fluid inclusion stratigraphy (FIS) as a logging tool for geothermal bore holes. Here we address methods of displaying...

195

A novel X-ray diffractometer for studies of liquid-liquid interfaces  

Science Journals Connector (OSTI)

A dedicated liquid surface diffractometer employing a tilting double-crystal monochromator in Bragg geometry has been designed. This diffractometer allows reflectivity and grazing-incidence scattering measurements of an immobile mechanical completely decoupled liquid sample from 6.4 to 29.4 keV.

Murphy, B.M.

2013-11-29T23:59:59.000Z

196

EMSL - liquids  

NLE Websites -- All DOE Office Websites (Extended Search)

liquids en Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 °C. http:www.emsl.pnl.govemslwebpublicationsiodine-solubility-low-activity-waste-borosilicate...

197

The {mu}Mural : a six-projector tiled display.  

SciTech Connect

Tiled displays have become a recent technical solution to aggregating commodity displays in order to provide higher resolution displays. This document describes the background, design, and implementation of the micromural, a six projector tiled display developed at Argonne National Laboratory.

Judson, I. R.

2002-06-27T23:59:59.000Z

198

E-Print Network 3.0 - aligned nematic liquid Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

G. Lukishova Nick Lepeshkin* Robert W... of planar-aligned liquid crystals ... Source: Boyd, Robert W. - Institute of Optics & Department of Physics and Astronomy, University of...

199

Density functional theory for carbon dioxide crystal  

SciTech Connect

We present a density functional approach to describe the solid?liquid phase transition, interfacial and crystal structure, and properties of polyatomic CO{sub 2}. Unlike previous phase field crystal model or density functional theory, which are derived from the second order direct correlation function, the present density functional approach is based on the fundamental measure theory for hard-sphere repulsion in solid. More importantly, the contributions of enthalpic interactions due to the dispersive attractions and of entropic interactions arising from the molecular architecture are integrated in the density functional model. Using the theoretical model, the predicted liquid and solid densities of CO{sub 2} at equilibrium triple point are in good agreement with the experimental values. Based on the structure of crystal-liquid interfaces in different planes, the corresponding interfacial tensions are predicted. Their respective accuracies need to be tested.

Chang, Yiwen; Mi, Jianguo, E-mail: mijg@mail.buct.edu.cn; Zhong, Chongli [State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029 (China)

2014-05-28T23:59:59.000Z

200

Oxygen Atoms Display Novel Behavior on Common Catalyst  

NLE Websites -- All DOE Office Websites (Extended Search)

11, 2008 11, 2008 Oxygen Atoms Display Novel Behavior on Common Catalyst Like waltzing dancers, the two atoms of an oxygen molecule usually behave identically when they separate on the surface of a catalyst. However, new research from the Environmental Molecular Sciences Laboratory reveals that on a particular catalyst, the oxygen atoms act like a couple dancing the tango: one oxygen atom plants itself while the other shimmies away, probably with energy partially stolen from the stationary one. Scientists from EMSL and Pacific Northwest National Laboratory discovered this unanticipated behavior while studying how oxygen interacts with reduced titanium oxide, a popular catalyst and a model oxide. Their research began with a slice of titanium oxide crystal, oriented so that titanium and oxygen

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


201

A CMOS-compatible compact display  

E-Print Network (OSTI)

Portable information devices demand displays with high resolution and high image quality that are increasingly compact and energy-efficient. Microdisplays consisting of a silicon CMOS backplane integrated with light ...

Chen, Andrew R. (Andrew Raymond)

2005-01-01T23:59:59.000Z

202

A smart active matrix pixelated OLED display  

E-Print Network (OSTI)

An OLED display has been fabricated and successfully tested with an external optical feedback circuit to demonstrate improvement in uniformity. In addition, the process of making an integrated system with the optical ...

Yu, Jennifer J. (Jennifer Jong-Hwa), 1980-

2004-01-01T23:59:59.000Z

203

Image fusion for a nighttime driving display  

E-Print Network (OSTI)

An investigation into image fusion for a nighttime driving display application was performed. Most of the image fusion techniques being investigated in this application were developed for other purposes. When comparing the ...

Herrington, William Frederick

2005-01-01T23:59:59.000Z

204

Tailored displays to compensate for visual aberrations  

E-Print Network (OSTI)

We introduce tailored displays that enhance visual acuity by decomposing virtual objects and placing the resulting anisotropic pieces into the subject's focal range. The goal is to free the viewer from needing wearable ...

Pamplona, Vitor F.

205

Beacon data acquisition and display system  

DOE Patents (OSTI)

A system for transmitting aircraft beacon information received by a secondary surveillance radar through telephone lines to a remote display includes a digitizer connected to the radar for preparing a serial file of data records containing position and identification information of the beacons detected by each sweep of the radar. This information is transmitted through the telephone lines to a remote computer where it is displayed.

Skogmo, David G. (Albuquerque, NM); Black, Billy D. (Albuquerque, NM)

1991-01-01T23:59:59.000Z

206

Beacon data acquisition and display system  

DOE Patents (OSTI)

A system for transmitting aircraft beacon information received by a secondary surveillance radar through telephone lines to a remote display includes a digitizer connected to the radar for preparing a serial file of data records containing position and identification information of the beacons detected by each sweep of the radar. This information is transmitted through the telephone lines to a remote computer where it is displayed. 6 figures.

Skogmo, D.G.; Black, B.D.

1991-12-17T23:59:59.000Z

207

Stable and metastable nanowires displaying locally controllable properties  

DOE Patents (OSTI)

Vapor-liquid-solid growth of nanowires is tailored to achieve complex one-dimensional material geometries using phase diagrams determined for nanoscale materials. Segmented one-dimensional nanowires having constant composition display locally variable electronic band structures that are determined by the diameter of the nanowires. The unique electrical and optical properties of the segmented nanowires are exploited to form electronic and optoelectronic devices. Using gold-germanium as a model system, in situ transmission electron microscopy establishes, for nanometer-sized Au--Ge alloy drops at the tips of Ge nanowires (NWs), the parts of the phase diagram that determine their temperature-dependent equilibrium composition. The nanoscale phase diagram is then used to determine the exchange of material between the NW and the drop. The phase diagram for the nanoscale drop deviates significantly from that of the bulk alloy.

Sutter, Eli Anguelova; Sutter, Peter Werner

2014-11-18T23:59:59.000Z

208

Questions and Answers - Is there anything colder than liquid nitrogen?  

NLE Websites -- All DOE Office Websites (Extended Search)

How cold is liquid nitrogen? How cold is liquid nitrogen? Previous Question (How cold is liquid nitrogen?) Questions and Answers Main Index Next Question (If you jumped into a pool of liquid oxygen, would your body instantly crystallize?) If you jumped into a pool of liquid oxygen,would your body instantly crystallize? Is there anything colder than liquid nitrogen? Yes, there are things colder than liquid nitrogen, like most of the Universe! I assume, though, that you mean things on the Earth. There actually is an entire branch of science called cryogenics that deals with really cold things. Generally the science of cryogenics is when the temperature goes below that which we can reach with conventional refrigeration equipment, around 250 degrees (Fahrenheit) below zero. Many

209

LNG liquid-liquid immiscibility  

SciTech Connect

Although natural gas species rarely exhibit liquid-liquid immiscibility in binary systems, the presence of additional components can extend the domain of immiscibility in those few binary systems where it already exists or produce immiscibility in binary systems where it had not existed. If the solute has the proper molecular relation to the solvent mixture background, liquid-liquid-vapor (LLV) behavior will occur; such phenomena greatly complicate the design of LNG processing equipment. To aid LNG engineers, researchers mapped the thermodynamic behavior of four ternary LLV systems and examined the effects of the second solvents - ethane, propane, n-butane, and CO/sub 2/ - on the binary methane + n-octane system.

Luks, K.D.; Kohn, J.P.

1981-09-01T23:59:59.000Z

210

SRS - Programs - Liquid Waste Disposition  

NLE Websites -- All DOE Office Websites (Extended Search)

Liquid Waste Disposition Liquid Waste Disposition This includes both the solidification of highly radioactive liquid wastes stored in SRS's tank farms and disposal of liquid low-level waste generated as a by-product of the separations process and tank farm operations. This low-level waste is treated in the Effluent Treatment Facility. High-activity liquid waste is generated at SRS as by-products from the processing of nuclear materials for national defense, research and medical programs. The waste, totaling about 36 million gallons, is currently stored in 49 underground carbon-steel waste tanks grouped into two "tank farms" at SRS. While the waste is stored in the tanks, it separates into two parts: a sludge that settles on the bottom of the tank, and a liquid supernate that resides on top of the sludge. The waste is reduced to about 30 percent of its original volume by evaporation. The condensed evaporator "overheads" are transferred to the Effluent Treatment Project for final cleanup prior to release to the environment. As the concentrate cools a portion of it crystallizes forming solid saltcake. The concentrated supernate and saltcake are less mobile and therefore less likely to escape to the environment in the event of a tank crack or leak.

211

Liquid-Liquid Transition at Tg and Stable-Glass Phase Nucleation Rate Maximum at the Kauzmann Temperature TK  

E-Print Network (OSTI)

An undercooled liquid is unstable. The driving force of the glass transition at Tg is a change of the undercooled-liquid Gibbs free energy. The classical Gibbs free energy change for a crystal formation is completed including an enthalpy saving. The crystal growth critical nucleus is used as a probe to observe the Laplace pressure change Dp accompanying the enthalpy change -Vm*Dp at Tg where Vm is the molar volume. A stable glass-liquid transition model predicts the specific heat jump of fragile liquids at temperatures smaller than Tg, the Kauzmann temperature TK where the liquid entropy excess with regard to crystal goes to zero, the equilibrium enthalpy between TK and Tg, the maximum nucleation rate at TK of superclusters containing magic atom numbers, and the equilibrium latent heats at Tg and TK. Strong-to-fragile and strong-to-strong liquid transitions at Tg are also described and all their thermodynamic parameters are determined from their specific heat jumps. The existence of fragile liquids quenched in the amorphous state, which do not undergo liquid-liquid transition during heating preceding their crystallization, is predicted. Long ageing times leading to the formation at TK of a stable glass composed of superclusters containing up to 147 atoms, touching and interpenetrating, are evaluated from nucleation rates.

Robert Felix Tournier

2014-04-10T23:59:59.000Z

212

NMR STUDIES OF LIQUID CRYSTALS AND MOLECULES DISSOLVED IN LIQUID CRYSTAL SOLVENTS  

E-Print Network (OSTI)

84) Drobny G. , Pines A. , Sinton S. , Weitekamp D. , andMag. Res. 37, 93 (1980) 88) Sinton S. , PhD Thesis, Dept. ofDrobny G. , Pines A. , Sinton S. , Weitekamp D. , Ramis-79

Drobny, G.P.

2010-01-01T23:59:59.000Z

213

Apparatus for monitoring crystal growth  

DOE Patents (OSTI)

A system and method are disclosed for monitoring the growth of a crystalline body from a liquid meniscus in a furnace. The system provides an improved human/machine interface so as to reduce operator stress, strain and fatigue while improving the conditions for observation and control of the growing process. The system comprises suitable optics for forming an image of the meniscus and body wherein the image is anamorphic so that the entire meniscus can be viewed with good resolution in both the width and height dimensions. The system also comprises a video display for displaying the anamorphic image. The video display includes means for enhancing the contrast between any two contrasting points in the image. The video display also comprises a signal averager for averaging the intensity of at least one preselected portions of the image. The value of the average intensity, can in turn be utilized to control the growth of the body. The system and method are also capable of observing and monitoring multiple processes.

Sachs, Emanual M. (Watertown, MA)

1981-01-01T23:59:59.000Z

214

Method of monitoring crystal growth  

DOE Patents (OSTI)

A system and method are disclosed for monitoring the growth of a crystalline body from a liquid meniscus in a furnace. The system provides an improved human/machine interface so as to reduce operator stress, strain and fatigue while improving the conditions for observation and control of the growing process. The system comprises suitable optics for forming an image of the meniscus and body wherein the image is anamorphic so that the entire meniscus can be viewed with good resolution in both the width and height dimensions. The system also comprises a video display for displaying the anamorphic image. The video display includes means for enhancing the contrast between any two contrasting points in the image. The video display also comprises a signal averager for averaging the intensity of at least one preselected portions of the image. The value of the average intensity, can in turn be utilized to control the growth of the body. The system and method are also capable of observing and monitoring multiple processes.

Sachs, Emanual M. (Watertown, MA)

1982-01-01T23:59:59.000Z

215

Tuning the defect configurations in nematic and smectic liquid crystalline shells  

Science Journals Connector (OSTI)

...arrangements in smectic liquid crystal shells utilizing the...Nematic-smectic transition in spherical shells. Phys. Rev...Topological defects in spherical nematics. Phys. Rev...a smectic-a from a bent nematic phase and smectic...The physics of liquid crystals. Oxford, UK: Clarendon...

2013-01-01T23:59:59.000Z

216

Random and Raster: Display Technologies and the Development of Videogames  

E-Print Network (OSTI)

Videogame developers have utilized many types of display technology, from oscilloscopes to Teletypes to high-definition LCD displays. Two significant early display technologies, raster scan and random scan CRTs, played a ...

Montfort, Nick

217

The TV Turtle: A Logo Graphics System for Raster Displays  

E-Print Network (OSTI)

Until recently, most computer graphics systems have been oriented toward the display of line drawins, continually refreshing the screen from a display list of vectors. Developments such as plasma panel displays and ...

Lieberman, Henry

1976-06-01T23:59:59.000Z

218

Covered Product Category: Displays and Monitors  

Energy.gov (U.S. Department of Energy (DOE))

FEMP provides acquisition guidance and Federal efficiency requirements across a variety of product categories, including displays, which are covered by the ENERGY STAR program. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

219

Interactive Display of Isosurfaces with Global Illumination  

Science Journals Connector (OSTI)

In many applications, volumetric data sets are examined by displaying isosurfaces, surfaces where the data, or some function of the data, takes on a given value. Interactive applications typically use local lighting models to render such surfaces. This ... Keywords: Path tracing, isosurface, visualization, rendering, global illumination, precomputed radiance transfer.

Chris Wyman; Steven Parker; Peter Shirley; Charles Hansen

2006-03-01T23:59:59.000Z

220

Tables in Context: Integrating Horizontal Displays with  

E-Print Network (OSTI)

design challenges for tabletop interfaces: integrating access to public and private information, managing a cooperative gesture to organize digital documents on an interactive table. Our tabletop interface designTables in Context: Integrating Horizontal Displays with Ubicomp Environments Abstract Our work

Klemmer, Scott

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


221

Method for harvesting rare earth barium copper oxide single crystals  

DOE Patents (OSTI)

A method of preparing high temperature superconductor single crystals is disclosed. The method of preparation involves preparing precursor materials of a particular composition, heating the precursor material to achieve a peritectic mixture of peritectic liquid and crystals of the high temperature superconductor, cooling the peritectic mixture to quench directly the mixture on a porous, wettable inert substrate to wick off the peritectic liquid, leaving single crystals of the high temperature superconductor on the porous substrate. Alternatively, the peritectic mixture can be cooled to a solid mass and reheated on a porous, inert substrate to melt the matrix of peritectic fluid while leaving the crystals melted, allowing the wicking away of the peritectic liquid. 2 figs.

Todt, V.R.; Sengupta, S.; Shi, D.

1996-04-02T23:59:59.000Z

222

MELT-MEDIATED LASER CRYSTALLIZATION OF THIN FILM NITI SHAPE MEMORY ALLOYS  

E-Print Network (OSTI)

matrix displays (e.g. LCD and OLED) as well as the active medium in thin film solar cells [4 of furnace, solid phase crystallization parameters (i.e. annealing temperature and dwell time

Yao, Y. Lawrence

223

Two-phase power-law modeling of pipe flows displaying shear-thinning phenomena  

SciTech Connect

This paper describes work in modeling concentrated liquid-solids flows in pipes. COMMIX-M, a three-dimensional transient and steady-state computer program developed at Argonne National Laboratory, was used to compute velocities and concentrations. Based on the authors` previous analyses, some concentrated liquid-solids suspension flows display shear-thinning rather than Newtonian phenomena. Therefore, they developed a two-phase non-Newtonian power-law model that includes the effect of solids concentration on solids viscosity. With this new two-phase power-law solids-viscosity model, and with constitutive relationships for interfacial drag, virtual mass effect, shear lift force, and solids partial-slip boundary condition at the pipe walls, COMMIX-M is capable of analyzing concentrated three-dimensional liquid-solids flows.

Ding, Jianmin; Lyczkowski, R.W.; Sha, W.T.

1993-12-31T23:59:59.000Z

224

Frustrated Organic Solids Display Unexpected Gas Sorption  

SciTech Connect

Calixarene based organic solid can hold guests such as toluene and other organic molecules we have discovered a new type of material which believe involves a frustration of the solvate lattice as it moves toward the thermodynamically stable desolvated state. The intermediated phase with partial solvent content unexpectedly sorbs gases such as carbon dioxide and highly explosive acetylene deep inside the crystal lattice.

Thallapally, Praveen K.; Dalgarno, Scott J.; Atwood, Jerry L.

2006-11-27T23:59:59.000Z

225

Neutron detection with single crystal organic scintillators  

SciTech Connect

Detection of high-energy neutrons in the presence of gamma radiation background utilizes pulse-shape discrimination (PSD) phenomena in organics studied previously only with limited number of materials, mostly liquid scintillators and single crystal stilbene. The current paper presents the results obtained with broader varieties of luminescent organic single crystals. The studies involve experimental tools of crystal growth and material characterization in combination with the advanced computer modeling, with the final goal of better understanding the relevance between the nature of the organic materials and their PSD properties. Special consideration is given to the factors that may diminish or even completely obscure the PSD properties in scintillating crystals. Among such factors are molecular and crystallographic structures that determine exchange coupling and exciton mobility in organic materials and the impurity effect discussed on the examples of trans-stilbene, bibenzyl, 9,10-diphenylanthracene and diphenylacetylene.

Zaitseva, N; Newby, J; Hamel, S; Carman, L; Faust, M; Lordi, V; Cherepy, N; Stoeffl, W; Payne, S

2009-07-15T23:59:59.000Z

226

Graphlocons: Large dendritic graphene crystals and their electronic properties  

SciTech Connect

Submillimeter dendritic-shaped crystals were synthesized by low pressure vapor chemical vapor deposition inside a copper enclosure. With their sixfold symmetry and fractal-like shape, the resulting crystals resemble snowflakes. The electronic properties of the devices were investigated down to sub-Kelvin temperatures, showing mobilities over 5000 cm{sup 2}/Vs and the quantum Hall effect at 8T. The magnetoresistance also displayed a sharp peak at zero field which we attribute to weak localization.

Massicotte, Mathieu; Yu, Victor; Whiteway, Eric; Hilke, Michael [Department of Physics, McGill University, Montreal (Canada)

2013-12-04T23:59:59.000Z

227

Monochromator Crystal Glitch Library  

DOE Data Explorer (OSTI)

SSRL's Monochromator Crystal Glitch Library allows users to view glitch spectra online, list specific crystal orientations, and download PDF files of the glitch spectra. (Specialized Interface)

228

In Situ Monitoring of Crystallinily and Temperature during Rapid Thermal Crystallization of Silicon on Glass  

E-Print Network (OSTI)

on Glass V. Subramanian, F. L Degertekin, P. Dankoski, B. 1. Khuri-Yakub, and K. C. Saraswatt Department crystal displays (AMLCDs). There is substantial interest in the development of a glass-com- patible the incorporation of driver circuitry onto glass display sub- strates,' improving performance at a reduced cost. Low

Khuri-Yakub, Butrus T. "Pierre"

229

Liquid electrode  

DOE Patents (OSTI)

A dropping electrolyte electrode is described for use in electrochemical analysis of non-polar sample solutions, such as benzene or cyclohexane. The liquid electrode, preferably an aqueous salt solution immiscible in the sample solution, is introduced into the solution in dropwise fashion from a capillary. The electrolyte is introduced at a known rate, thus, the droplets each have the same volume and surface area. The electrode is used in making standard electrochemical measurements in order to determine properties of non-polar sample solutions. 2 figures.

Ekechukwu, A.A.

1994-07-05T23:59:59.000Z

230

Crystallography of Quasiperiodic Crystals  

Science Journals Connector (OSTI)

A unified description is given of modulated crystals and quasicrystals based on higher-dimensional crystallography.

Yamamoto, A.

1996-07-01T23:59:59.000Z

231

Melting of superheated crystals initiates on vacancies  

E-Print Network (OSTI)

In a large variety of ideal crystals we found that when rapidly migrating atoms squash or annihilate a neighbouring vacancy and produce a disordered cluster, the heat of migration stored in the system exceeds the enthalpy increase required for the coordinating atoms of the vacancy to form a liquid phase, i.e. the liquid phase nucleates from vacancies. Furthermore volumetric analysis supports this well. This vacancy-decomposition model provides quantitative information on the melting point, the latent heat and the volume change upon melting and hence clarifies the mechanism of melting.

L. W. Wang; Q. Wang; K. Q. Lu

2010-07-24T23:59:59.000Z

232

Mixed crystal organic scintillators  

DOE Patents (OSTI)

A mixed organic crystal according to one embodiment includes a single mixed crystal having two compounds with different bandgap energies, the organic crystal having a physical property of exhibiting a signal response signature for neutrons from a radioactive source, wherein the signal response signature does not include a significantly-delayed luminescence characteristic of neutrons interacting with the organic crystal relative to a luminescence characteristic of gamma rays interacting with the organic crystal. According to one embodiment, an organic crystal includes bibenzyl and stilbene or a stilbene derivative, the organic crystal having a physical property of exhibiting a signal response signature for neutrons from a radioactive source.

Zaitseva, Natalia P; Carman, M Leslie; Glenn, Andrew M; Hamel, Sebastien; Hatarik, Robert; Payne, Stephen A; Stoeffl, Wolfgang

2014-09-16T23:59:59.000Z

233

The Gibbs free energy of mixing of natural silicate liquids; an expanded regular solution approximation for the calculation of magmatic intensive variables  

Science Journals Connector (OSTI)

The compositions of liquids coexisting with experimentally grown crystals of olivine, plagioclase, clinopyroxene, orthopyroxene, leucite, spinel, rhombohedral oxide, melilite and potassium feldspar are used to de...

Mark S. Ghiorso; Ian S. E. Carmichael…

1983-11-01T23:59:59.000Z

234

Guidance Document Cryogenic Liquids  

E-Print Network (OSTI)

Guidance Document Cryogenic Liquids [This is a brief and general summary. Read the full MSDS for more details before handling.] Introduction: All cryogenic liquids are gases at normal temperature liquefies them. Cryogenic liquids are kept in the liquid state at very low temperatures. Cryogenic liquids

235

Hermetically sealed encasements for historic document display and preservation  

E-Print Network (OSTI)

The goal of this thesis was to develop designs and methods for the preservation and display of historic documents. The results were applied via the design, manufacture, and installation of five hermetic display encasements ...

Durand, Keith (Keith V.)

2011-01-01T23:59:59.000Z

236

A Power Optimized Display Memory Organization for Handheld User Terminals  

Science Journals Connector (OSTI)

Today's handheld devices become more and more multimedia capable. One subsystem of a multimedia terminal that accounts for a considerable amount of the total power consumption is the display unit. The backlight is the major culprit there. As new display ...

Lieven Hollevoet; Andy Dewilde; Kristof Denolf; Francky Catthoor; Filip Louagie

2004-02-01T23:59:59.000Z

237

A 3-D display head-set for personalized computing  

E-Print Network (OSTI)

This thesis covers the design and implementation of a binocular display head-set akin to Dr . Ivan E. Sutherland's head-mounted display, but using several new technologies and new techniques in computer graphics: small ...

Callahan, Mark A

1983-01-01T23:59:59.000Z

238

LM Completes the Grand Junction, Colorado, Site Historical Wall Display  

Energy.gov (U.S. Department of Energy (DOE))

On Wednesday, October 8, a new display was unveiled at DOE Headquarters in Washington, DC, by DOE Deputy Under Secretary David Klaus. The display celebrates more than 70 years of operations at the...

239

Methods of invisibility and multi-dimensional display  

E-Print Network (OSTI)

Modern methods of multidimensional display are extremely limited in their depiction of three dimensional environments. Improving upon modern integral imaging displays with respect to viewing angle and angular resolution, ...

Ku, Jason (Jason Stoutsenberger)

2009-01-01T23:59:59.000Z

240

Web Page Error 500 Page Cannot Be Displayed  

NLE Websites -- All DOE Office Websites (Extended Search)

requested cannot be displayed. There is a problem with the page you are trying to reach and it cannot be displayed. Please try the following: Click the Refresh button, or try again...

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


241

Display Advertising Impact: Search Lift and Social P. Papadimitriou1  

E-Print Network (OSTI)

Display Advertising Impact: Search Lift and Social Influence P. Papadimitriou1 P. Krishnamurthy2 R study the impact of display advertising on user search behav- ior using a field experiment. In such an experiment, the treatment group users are exposed to some display advertising campaign, while the control

Chang, Edward Y.

242

Icon Abacus: Positional Display of Document Attributes Eric A. Bier  

E-Print Network (OSTI)

Icon Abacus: Positional Display of Document Attributes Eric A. Bier Palo Alto Research Center, Inc This paper presents icon abacus, a space-efficient technique for displaying document attributes by automatic positioning of document icons. It displays the value of an attribute by using position on a single axis

243

ORIGINAL PAPER Peacocks orient their courtship displays towards the sun  

E-Print Network (OSTI)

ORIGINAL PAPER Peacocks orient their courtship displays towards the sun Roslyn Dakin & Robert on male orientation relative to the position of the sun. During the "wing-shaking" display, females were generally behind the displaying male, and male orientation with respect to the position of the sun

Montgomerie, Bob

244

A liquid film motor  

Science Journals Connector (OSTI)

It is well known that electro-hydrodynamical effects in freely suspended liquid films can force liquids to flow. Here, we report a purely electrically driven rotation in water and some other liquid suspended film...

A. Amjadi; R. Shirsavar; N. Hamedani Radja…

2009-05-01T23:59:59.000Z

245

DISPLAY WEEK 2012 REVIEW ISSUE Official Monthly Publication of the Society for Information Display www.informationdisplay.org  

E-Print Network (OSTI)

companies at Display Week 2012: Tactus Technology for best prototype in the new Innovation Zone and Dimenco, Fraunhofer COMEDD, LG Display, Ocular, and Samsung as Best-in-Show winners from the exhibit floor. By Jenny to innovate. By Alfred Poor 17 Part I: A Brief History of Key Areas in Display Technology In Part I of our 50

Heikenfeld, Jason

246

Crystallization of polyethylene by modified weighted density approximation(MWDA)  

E-Print Network (OSTI)

In this article, we use the modified weighted density approximation to study the crystallization of polyethylene. We also use a direct correlation function of polyethylene based on RISM theory. The free energy of a polyethylene is calculated using density functional theory. The crystallization and solid and liquid density are calculated and finally compared with the prism simulation and experimental results. That shown the result obtained by MWDA is in better agreement, compared with the experimental result than the prism.

Razeghizadeh, Alireza; Lavafpour, Farhad

2015-01-01T23:59:59.000Z

247

Crystallization of polyethylene by modified weighted density approximation(MWDA)  

E-Print Network (OSTI)

In this article, we use the modified weighted density approximation to study the crystallization of polyethylene. We also use a direct correlation function of polyethylene based on RISM theory. The free energy of a polyethylene is calculated using density functional theory. The crystallization and solid and liquid density are calculated and finally compared with the prism simulation and experimental results. That shown the result obtained by MWDA is in better agreement, compared with the experimental result than the prism.

Alireza Razeghizadeh; Vahdat Rafee; Farhad Lavafpour

2015-02-07T23:59:59.000Z

248

CRYSTALLIZATION IN MULTICOMPONENT GLASSES  

SciTech Connect

In glass processing situations involving glass crystallization, various crystalline forms nucleate, grow, and dissolve, typically in a nonuniform temperature field of molten glass subjected to convection. Nuclear waste glasses are remarkable examples of multicomponent vitrified mixtures involving partial crystallization. In the glass melter, crystals form and dissolve during batch-to-glass conversion, melter processing, and product cooling. Crystals often agglomerate and sink, and they may settle at the melter bottom. Within the body of cooling glass, multiple phases crystallize in a non-uniform time-dependent temperature field. Self-organizing periodic distribution (the Liesegnang effect) is common. Various crystallization phenomena that occur in glass making are reviewed.

KRUGER AA; HRMA PR

2009-10-08T23:59:59.000Z

249

Frostbite Theater - Liquid Oxygen vs. Liquid Nitrogen - Liquid Oxygen and  

NLE Websites -- All DOE Office Websites (Extended Search)

Cells vs. Liquid Nitrogen! Cells vs. Liquid Nitrogen! Previous Video (Cells vs. Liquid Nitrogen!) Frostbite Theater Main Index Next Video (Paramagnetism) Paramagnetism Liquid Oxygen and Fire! What happens when nitrogen and oxygen are exposed to fire? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: And this is a test tube of liquid nitrogen! Steve: And this is a test tube of liquid oxygen! Joanna: Let's see what happens when nitrogen and oxygen are exposed to fire. Steve: Fire?! Joanna: Yeah! Steve: Really?! Joanna: Why not! Steve: Okay! Joanna: As nitrogen boils, it changes into nitrogen gas. Because it's so cold, it's denser than the air in the room. The test tube fills up with

250

Phasing tiny crystals  

Science Journals Connector (OSTI)

For tiny crystals, their diffraction intensities at and between the Bragg peaks become measurable due to the limited number of the unit cells, which can in principle be used to directly phase the crystal structures.

Miao, J.

2013-12-31T23:59:59.000Z

251

Growing Giant Crystals  

NLE Websites -- All DOE Office Websites (Extended Search)

kids Growing Giant Crystals A new process similar to making rock candy was developed at NIF to rapidly grow very large crystals that are about 2 cubic feet in size and weigh up to...

252

Automation in biological crystallization  

Science Journals Connector (OSTI)

Automation is the response to overcoming the crystallization bottleneck in biological crystallography. This review provides a summary of the current methods and technologies applied in automated platforms for the setup of initial and follow-up crystallization experiments.

Shaw Stewart, P.

2014-05-28T23:59:59.000Z

253

Safetygram #9- Liquid Hydrogen  

Energy.gov (U.S. Department of Energy (DOE))

Hydrogen is colorless as a liquid. Its vapors are colorless, odorless, tasteless, and highly flammable.

254

Property:Integrated Display/Graphics | Open Energy Information  

Open Energy Info (EERE)

Display/Graphics Display/Graphics Jump to: navigation, search Property Name Integrated Display/Graphics Property Type Text Pages using the property "Integrated Display/Graphics" Showing 22 pages using this property. A Alden Large Flume + Lab View, Test Point Alden Small Flume + Lab View, Test Point Alden Tow Tank + Lab View, Test Point Alden Wave Basin + Lab View, Test Point B Bucknell Hydraulic Flume + Microsoft Windows based systems C Conte Large Flume + Conventional PC and video displays; TecPlot Conte Small Flume + Conventional PC and video displays; TecPlot D Davidson Laboratory Tow Tank + Standard PC-based tools H Haynes Tow Tank + National Instruments LabView Haynes Wave Basin + National Instruments LabView Hinsdale Wave Basin 1 + Remote telepresence and experiment participation as part of George E. Brown Jr. Network for Earthquake Engineering Simulation (NEES)

255

Minimal Viewing Distance Calculation in LED Display Panels  

Science Journals Connector (OSTI)

Light-emitting diode (LED) display panels have received more attention recently. These panels usually are placed in public places such as streets, ...

Nazeran Motlagh, A Ali; Hashemi, B Massoud Reza

2010-01-01T23:59:59.000Z

256

Y-12 historian assists in Lincoln Memorial University display...  

National Nuclear Security Administration (NNSA)

assists in Lincoln Memorial University display design NNSA Blog Y-12 historian Ray Smith, left, joins Lincoln Memorial University board of trustees chairman Pete DeBusk in...

257

Lighted display devices for producing static or animated visual displays, including animated facial features  

DOE Patents (OSTI)

An illuminated display device with a base member with a plurality of cavities therein. Illumination devices illuminate the cavities and emit light through an opening of the cavities in a pattern, and a speaker can emit sounds in synchronization with the pattern. A panel with translucent portions can overly the base member and the cavities. An animated talking character can have an animated mouth cavity complex with multiple predetermined mouth lighting configurations simulative of human utterances. The cavities can be open, or optical waveguide material or positive members can be disposed therein. Reflective material can enhance internal reflectance and light emission.

Heilbron, Valerie J; Clem, Paul G; Cook, Adam Wade

2014-02-11T23:59:59.000Z

258

Liquid level detector  

DOE Patents (OSTI)

A liquid level detector for low pressure boilers. A boiler tank, from which apor, such as steam, normally exits via a main vent, is provided with a vertical side tube connected to the tank at the desired low liquid level. When the liquid level falls to the level of the side tube vapor escapes therethrough causing heating of a temperature sensitive device located in the side tube, which, for example, may activate a liquid supply means for adding liquid to the boiler tank. High liquid level in the boiler tank blocks entry of vapor into the side tube, allowing the temperature sensitive device to cool, for example, to ambient temperature.

Grasso, Albert P. (Vernon, CT)

1986-01-01T23:59:59.000Z

259

Liquid level detector  

DOE Patents (OSTI)

A liquid level detector for low pressure boilers. A boiler tank, from which vapor, such as steam, normally exits via a main vent, is provided with a vertical side tube connected to the tank at the desired low liquid level. When the liquid level falls to the level of the side tube vapor escapes therethrough causing heating of a temperature sensitive device located in the side tube, which, for example, may activate a liquid supply means for adding liquid to the boiler tank. High liquid level in the boiler tank blocks entry of vapor into the side tube, allowing the temperature sensitive device to cool, for example, to ambient temperature.

Grasso, A.P.

1984-02-21T23:59:59.000Z

260

Design rules for the self-assembly of a protein crystal  

E-Print Network (OSTI)

Theories of protein crystallization based on spheres that form close-packed crystals predict optimal assembly within a `slot' of second virial coefficients and enhanced assembly near the metastable liquid-vapor critical point. However, most protein crystals are open structures stabilized by anisotropic interactions. Here, we use theory and simulation to show that assembly of one such structure is not predicted by the second virial coefficient or enhanced by the critical point. Instead, good assembly requires that the thermodynamic driving force be on the order of the thermal energy and that interactions be made as nonspecific as possible without promoting liquid-vapor phase separation.

Thomas K. Haxton; Stephen Whitelam

2011-10-25T23:59:59.000Z

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


261

GT40 Utility Pograms and the LISP Display Slave  

E-Print Network (OSTI)

This memo describes two GT40 programs: URUG, an octal micro-debugger: and VT07, a Datapoint simulator and general display package. There is also a description of the MITAI LISP display slave, and how it uses VT07 as a ...

Beeler, Michael

262

Organic experiences: (re)shaping interactions with deformable displays  

Science Journals Connector (OSTI)

Display technology developments mean the next generation of visual output devices will extend beyond the rigid, flat surfaces with which we are familiar to those that the user or the machine can deform. These will allow users to physically push, pull, ... Keywords: deformable displays, machine-initiated shape change, organic user experience, organic user interfaces, user-deformation

Jason Alexander; Ryan Brotman; David Holman; Audrey Younkin; Roel Vertegaal; Johan Kildal; Andrés A. Lucero; Anne Roudaut; Sriram Subramanian

2013-04-01T23:59:59.000Z

263

Electronic displays using optically pumped luminescent semiconductor nanocrystals  

SciTech Connect

A multicolor electronic display is based on an array of luminescent semiconductor nanocrystals. Nanocrystals which emit tight of different colors are grouped into pixels. The nanocrystals are optically pumped to produce a multicolor display. Different sized nanocrystals are used to produce the different colors. A variety of pixel addressing systems can be used.

Weiss, Shimon; Schlam, Michael C; Alivisatos, A. Paul

2014-03-25T23:59:59.000Z

264

Immersive Planar Display using Roughly Aligned Projectors Ramesh Raskar  

E-Print Network (OSTI)

://www.cs.unc.edu/~raskar/Planar/ Abstract When a projector is oblique with respect to a planar dis- playsurface, it creates keystoning is not perpendicular to the display screen, the resultant image is keystoned and ap- pears distorted (Fig 1). We rectangular images (b) Oblique projectors create keystoned images. positioned in large display systems, after

North Carolina at Chapel Hill, University of

265

Covered Product Category: ENERGY STAR Displays | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Displays Displays Covered Product Category: ENERGY STAR Displays October 7, 2013 - 10:56am Addthis Did you know? Enabling the power management features on displays substantially reduces energy use and related operating cost. FEMP provides acquisition guidance and Federal efficiency requirements across a variety of product categories, including displays, which are covered by the ENERGY STAR® program. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. This acquisition guidance and associated ENERGY STAR product specifications apply to products such as computer monitors, digital picture frames, and professional signage. Products with screen sizes greater than 60 inches and

266

DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG  

Open Energy Info (EERE)

DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG GRAPHS Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: DISPLAYING AND INTERPRETING FLUID INCLUSION STRATIGRAPHY ANALYSES ON MUDLOG GRAPHS Details Activities (1) Areas (1) Regions (0) Abstract: This is the fourth paper in a series on developing fluid inclusion stratigraphy (FIS) as a logging tool for geothermal bore holes. Here we address methods of displaying analyses and plotting gas ratios used for data interpretation on mudlog plots. The goal is to develop a rapid method of data display and interpretation for the up to 10,000 analyses returned by a geothermal well FIS analysis. Author(s): Norman, D.I.; Dilley, L.M.; McCulloch, J. Published: PROCEEDINGS, Thirtieth Workshop on Geothermal Reservoir

267

Commercial Display Systems: Proposed Penalty (2013-CE-5350) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Display Systems: Proposed Penalty (2013-CE-5350) Display Systems: Proposed Penalty (2013-CE-5350) Commercial Display Systems: Proposed Penalty (2013-CE-5350) February 21, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Commercial Display Systems, LLC failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards. DOE regulations require a manufacturer (which includes importers) to submit reports certifying that its products have been tested and meet the applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Commercial Display Systems: Proposed Penalty (2013-CE-5350) More Documents & Publications

268

Solar Field Powers Historic Garden Holiday Display | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Field Powers Historic Garden Holiday Display Field Powers Historic Garden Holiday Display Solar Field Powers Historic Garden Holiday Display December 21, 2011 - 2:58pm Addthis This is part of the holiday light display at Longwood Gardens in Pennsylvania's Brandwine Valley. This year, they commissioned an American-made 1.2 megawatt, 10.7-acre solar field as part of their goal to generate three megawatts of renewable energy by 2018. | Photo courtesy of Longwood Gardens/W. Hill This is part of the holiday light display at Longwood Gardens in Pennsylvania's Brandwine Valley. This year, they commissioned an American-made 1.2 megawatt, 10.7-acre solar field as part of their goal to generate three megawatts of renewable energy by 2018. | Photo courtesy of Longwood Gardens/W. Hill Kristin Swineford Communication Specialist, Weatherization and Intergovernmental Programs

269

Viscosity, specific (for liquids)  

Science Journals Connector (OSTI)

n. The ratio between the viscosity of a liquid and the viscosity of water at the same temperature. Specific viscosity is sometimes used interchangeably with relative viscosity for liquids.

2007-01-01T23:59:59.000Z

270

Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid Phase  

NLE Websites -- All DOE Office Websites (Extended Search)

Computer Simulations Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid Phase Computer Simulations Indicate Calcium Carbonate Has a Dense Liquid Phase Berkeley Lab research could help scientists predict how carbon is stored underground August 22, 2013 | Tags: Earth Sciences, Geosciences Dan Krotz 510-486-4019 dakrotz@lbl.gov red2.jpg Artistic rendition of liquid-liquid separation in a supersaturated calcium carbonate solution. New research suggests that a dense liquid phase (shown in red in the background and in full atomistic detail based on computer simulations in the foreground) forms at the onset of calcium carbonate crystallization. (Credit: Berkeley Lab) Computer simulations conducted at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) could help scientists

271

Enzyme Activity and Biomolecule Templating at Liquid and Solid Interfaces  

SciTech Connect

There are two main components of this research program. The first involves studies of the adsorption and catalytic activity of proteins at fluid-fluid and fluid-solid interfaces; the second employs biological macromolecules as templates at the solid-liquid interface for controlled crystallization of inorganic materials, to provide materials with specific functionality.

Harvey W. Blanch

2004-12-01T23:59:59.000Z

272

Liquid pair correlations in four spatial dimensions: Theory versus simulation  

E-Print Network (OSTI)

Using liquid integral equation theory, we calculate the pair correlations of particles that interact via a smooth repulsive pair potential in d = 4 spatial dimensions. We discuss the performance of different closures for the Ornstein-Zernike equation, by comparing the results to computer simulation data. Our results are of relevance to understand crystal and glass formation in high-dimensional systems.

M. Heinen; J. Horbach; H. Löwen

2014-11-06T23:59:59.000Z

273

Liquid Piston Stirling Engines  

Science Journals Connector (OSTI)

The Fluidyne liquid piston engine is a simple free-piston Stirling engine that can be made from nothing more...

Graham Walker Ph. D.; J. R. Senft Ph.D.

1985-01-01T23:59:59.000Z

274

P-66: Personal Communication System Hand-set with Organic Light Emitting Diode Display  

E-Print Network (OSTI)

Light Emitting Diodes (OLED) display panel. As a result, OLEDs technology was applied to a display for a

Seungeun Lee; Wonseok Oh; Sungchul Lee; Jongchan Choi

275

Phononic crystal devices  

DOE Patents (OSTI)

Phononic crystals that have the ability to modify and control the thermal black body phonon distribution and the phonon component of heat transport in a solid. In particular, the thermal conductivity and heat capacity can be modified by altering the phonon density of states in a phononic crystal. The present invention is directed to phononic crystal devices and materials such as radio frequency (RF) tags powered from ambient heat, dielectrics with extremely low thermal conductivity, thermoelectric materials with a higher ratio of electrical-to-thermal conductivity, materials with phononically engineered heat capacity, phononic crystal waveguides that enable accelerated cooling, and a variety of low temperature application devices.

El-Kady, Ihab F. (Albuquerque, NM); Olsson, Roy H. (Albuquerque, NM)

2012-01-10T23:59:59.000Z

276

An expert display system and nuclear power plant control rooms  

SciTech Connect

An expert display system controls automatically the display of segments on a cathode ray tube's screen to form an image of plant operations. The image consists of an icon of: 1) the process (heat engine cycle), 2) plant control systems, and 3) safety systems. A set of data-driven, forward-chaining computer stored rules control the display of segments. As plant operation changes, measured plant data are processed through the rules, and the results control the deletion and addition of segments to the display format. The icon contains information needed by control rooms operators to monitor plant operations. One example of an expert display is illustrated for the operator's task of monitoring leakage from a safety valve in a steam line of a boiling water reactor (BWR). In another example, the use of an expert display to monitor plant operations during pre-trip, trip, and post-trip operations is discussed as a universal display. The viewpoints and opinions expressed herein are the author's personal ones, and they are not to be interpreted as Nuclear Regulatory Commission criteria, requirements, or guidelines.

Beltracchi, L.

1988-04-01T23:59:59.000Z

277

Breaking symmetries in ordered materials : spin polarized light transport in magnetized noncentrosymmetric 1D photonic crystals, and photonic gaps and fabrication of quasiperiodic structured materials from interference lithography  

E-Print Network (OSTI)

Effects of breaking various symmetries on optical properties in ordered materials have been studied. Photonic crystals lacking space-inversion and time-reversal symmetries were shown to display nonreciprocal dispersion ...

Bita, Ion

2006-01-01T23:59:59.000Z

278

Channeling through Bent Crystals  

SciTech Connect

Bent crystals have demonstrated potential for use in beam collimation. A process called channeling is when accelerated particle beams are trapped by the nuclear potentials in the atomic planes within a crystal lattice. If the crystal is bent then the particles can follow the bending angle of the crystal. There are several different effects that are observed when particles travel through a bent crystal including dechanneling, volume capture, volume reflection and channeling. With a crystal placed at the edge of a particle beam, part of the fringe of the beam can be deflected away towards a detector or beam dump, thus helping collimate the beam. There is currently FORTRAN code by Igor Yazynin that has been used to model the passage of particles through a bent crystal. Using this code, the effects mentioned were explored for beam energy that would be seen at the Facility for Advanced Accelerator Experimental Tests (FACET) at a range of crystal orientations with respect to the incoming beam. After propagating 5 meters in vacuum space past the crystal the channeled particles were observed to separate from most of the beam with some noise due to dechanneled particles. Progressively smaller bending radii, with corresponding shorter crystal lengths, were compared and it was seen that multiple scattering decreases with the length of the crystal therefore allowing for cleaner detection of the channeled particles. The input beam was then modified and only a portion of the beam sent through the crystal. With the majority of the beam not affected by the crystal, most particles were not deflected and after propagation the channeled particles were seen to be deflected approximately 5mm. After a portion of the beam travels through the crystal, the entire beam was then sent through a quadrupole magnet, which increased the separation of the channeled particles from the remainder of the beam to a distance of around 20mm. A different code, which was developed at SLAC, was used to create an angular profile plot which was compared to what was produced by Yazynin's code for a beam with no multiple scattering. The results were comparable, with volume reflection and channeling effects observed and the range of crystal orientations at which volume reflection is seen was about 1 mrad in both simulations.

Mack, Stephanie; /Ottawa U. /SLAC

2012-09-07T23:59:59.000Z

279

Durable electrooptic devices comprising ionic liquids  

DOE Patents (OSTI)

Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3-), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N-), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N-) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C-). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes.

Agrawal, Anoop (Tucson, AZ); Cronin, John P. (Tucson, AZ); Tonazzi, Juan C. L. (Tucson, AZ); Warner, Benjamin P. (Los Alamos, NM); McCleskey, T. Mark (Los Alamos, NM); Burrell, Anthony K. (Los Alamos, NM)

2005-11-01T23:59:59.000Z

280

Photoalignment of Liquid Crystals on Chalcogenide Glassy Films  

E-Print Network (OSTI)

of National Academy of Science of Ukraine, Ukraine 2 Department of Physics, Ben-Gurion University of the Negev Reznikov, Institute of Physics, National Academy of Science of Ukraine, Pr. Nauki 16, Kiev 03039, Ukraine

Reznikov, Yuri

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


281

PULSED ZERO FIELD NMR OF SOLIDS AND LIQUID CRYSTALS  

E-Print Network (OSTI)

Bielecki, A. Pines and S.W. Sinton, Nature 312, 351 36. A.Readi ng , 1981). 45. S.W. Sinton, Ph.D. Thesis, Universityof California, Berkeley, 46. S. Sinton, J.R. Garbow, J.L.

Thayer, A.M.

2010-01-01T23:59:59.000Z

282

Comment on “Vortex Liquid Crystal in Anisotropic Type II Superconductors”  

Science Journals Connector (OSTI)

A Comment on the Letter by E.?W. Carlson, A.?H. Castro Neto, and D.?K. Campbell, Phys. Rev. Lett. 90, 087001 (2003). The authors of the Letter offer a Reply.

Xiao Hu and Qing-Hu Chen

2004-05-18T23:59:59.000Z

283

Colloidal Structures from Bulk Demixing in Liquid Crystals  

Science Journals Connector (OSTI)

Richard ,† and P. Poulin *† ... (2)?Loudet, J. C. Barois, P.; Poulin, P. Nature 2000, 407, 611. ... Loudet, Jean-Christophe; Barois, Philippe; Poulin, Philippe ...

J. C. Loudet; P. Barois; P. Auroy; P. Keller; H. Richard; P. Poulin

2004-09-21T23:59:59.000Z

284

Modeling and Simulation of Switchings in Ferroelectric liquid crystals  

E-Print Network (OSTI)

Jun 6, 2009 ... Furthermore, the Euler-Lagrange equation (12) admits a unique ..... For uNM ? XNM , we have vi0 = u?(xi), viM = u+(xi) and v0j = ?1, vNj = 1.

2009-06-06T23:59:59.000Z

285

Low loss liquid crystals for infrared applications Fenglin Penga  

E-Print Network (OSTI)

contender for phase modulation, such as spatial light modula- tors (SLMs),[1] laser beam steering,[2-free LC device is governed by: T � exp��,� (2) where stands for the absorption coefficient at a laser as a cladding layer, and only about 10% of the evanescent beam penetrates into the LC layer. Therefore

Wu, Shin-Tson

286

Reflectivity of cholesteric liquid crystals with spatially varying pitch  

E-Print Network (OSTI)

Solids with spatially varying photonic structure offer gaps to light of a wider range of frequencies than do simple photonic systems. We solve numerically the field distribution in a solid cholesteric with a linearly varying inverse pitch (helical wavevector) using equations we derive for the general case. The simple idea that the position where the Bragg condition is locally satisfied is where reflection takes place is only true in part. Here, reflection is due to a region where the waves are forced to become evanescent, and the rate of variation of structure determines over which distance the waves decay and therefore how complete reflection is. The approximate local Bragg-de Vries schemes are shown to break down in detail at the edges of the gap, and an analytical estimate is given for the transmission coefficient.

S. Kutter; M. Warner

2003-04-30T23:59:59.000Z

287

Modeling and simulation of switchings in ferroelectric liquid crystals.  

E-Print Network (OSTI)

cooling, there is locally a one-dimensional formation of layers with the director n being parallel to the layer normal, .... By the standard theories of bifurcations, we prove that surface ... These periodic solutions allow sharp interfaces at finite points when the ... Using the Young measure argument, we prove that the electrostatic ...

2009-12-09T23:59:59.000Z

288

Analysis and Stability of Bent–Core Liquid Crystal Fibers  

E-Print Network (OSTI)

Feb 21, 2011 ... Here Hl(E) is the l-dimensional Hausdorff measure of E. Elastic distortions. ... The energy required to create the interfaces at ?0 and ?1 is taken as. FSu = ?. ?0 ?0 +. ? ..... is a standard annulus, Br(o) \\ Br0 (o). Theorem 2.6.

2011-02-21T23:59:59.000Z

289

Number of elastic coefficients in a biaxial nematic liquid crystal  

Science Journals Connector (OSTI)

It is shown by explicit calculation that there are 12 bulk elastic constants and 3 surface terms in the elastic energy of biaxial nematics.

H. Brand and H. Pleiner

1982-09-01T23:59:59.000Z

290

Asymptotic behavior for a nematic liquid crystal model with different ...  

E-Print Network (OSTI)

Their argument is based on an appropriate choice of test. 4 ... ria can be nontrivial and may form a continuum for certain physically reasonable nonlinearities.

2015-01-23T23:59:59.000Z

291

Analysis of Nematic Liquid Crystals with Disclination Lines  

E-Print Network (OSTI)

May 31, 2011 ... ria for F? in A. Their goal was to give evidence that equilibria are strongly ..... We use ?2(˜z ? ?) as a test function in (3.1) where ? is a cutoff ...

2011-05-31T23:59:59.000Z

292

Selective posttranslational modification of phage-displayed polypeptides  

DOE Patents (OSTI)

The invention relates to posttranslational modification of phage-displayed polypeptides. These displayed polypeptides comprise at least one unnatural amino acid, e.g., an aryl-azide amino acid such as p-azido-L-phenylalanine, or an alkynyl-amino acid such as para-propargyloxyphenylalanine, which are incorporated into the phage-displayed fusion polypeptide at a selected position by using an in vivo orthogonal translation system comprising a suitable orthogonal aminoacyl-tRNA synthetase and a suitable orthogonal tRNA species. These unnatural amino acids advantageously provide targets for posttranslational modifications such as azide-alkyne [3+2]cycloaddition reactions and Staudinger modifications.

Tsao, Meng-Lin; Tian, Feng; Schultz, Peter

2013-02-05T23:59:59.000Z

293

Selective posttranslational modification of phage-displayed polypeptides  

DOE Patents (OSTI)

The invention relates to posttranslational modification of phage-displayed polypeptides. These displayed polypeptides comprise at least one unnatural amino acid, e.g., an aryl-azide amino acid such as p-azido-L-phenylalanine, or an alkynyl-amino acid such as para-propargyloxyphenylalanine, which are incorporated into the phage-displayed fusion polypeptide at a selected position by using an in vivo orthogonal translation system comprising a suitable orthogonal aminoacyl-tRNA synthetase and a suitable orthogonal tRNA species. These unnatural amino acids advantageously provide targets for posttranslational modifications such as azide-alkyne [3+2] cycloaddition reactions and Staudinger modifications.

Tsao, Meng-Lin; Tian, Feng; Schultz, Peter

2013-11-19T23:59:59.000Z

294

Liquid Wall Chambers  

SciTech Connect

The key feature of liquid wall chambers is the use of a renewable liquid layer to protect chamber structures from target emissions. Two primary options have been proposed and studied: wetted wall chambers and thick liquid wall (TLW) chambers. With wetted wall designs, a thin layer of liquid shields the structural first wall from short ranged target emissions (x-rays, ions and debris) but not neutrons. Various schemes have been proposed to establish and renew the liquid layer between shots including flow-guiding porous fabrics (e.g., Osiris, HIBALL), porous rigid structures (Prometheus) and thin film flows (KOYO). The thin liquid layer can be the tritium breeding material (e.g., flibe, PbLi, or Li) or another liquid metal such as Pb. TLWs use liquid jets injected by stationary or oscillating nozzles to form a neutronically thick layer (typically with an effective thickness of {approx}50 cm) of liquid between the target and first structural wall. In addition to absorbing short ranged emissions, the thick liquid layer degrades the neutron flux and energy reaching the first wall, typically by {approx}10 x x, so that steel walls can survive for the life of the plant ({approx}30-60 yrs). The thick liquid serves as the primary coolant and tritium breeding material (most recent designs use flibe, but the earliest concepts used Li). In essence, the TLW places the fusion blanket inside the first wall instead of behind the first wall.

Meier, W R

2011-02-24T23:59:59.000Z

295

Sliding Luttinger liquid phases  

Science Journals Connector (OSTI)

We study systems of coupled spin-gapped and gapless Luttinger liquids. First, we establish the existence of a sliding Luttinger liquid phase for a system of weakly coupled parallel quantum wires, with and without disorder. It is shown that the coupling can stabilize a Luttinger liquid phase in the presence of disorder. We then extend our analysis to a system of crossed Luttinger liquids and establish the stability of a non-Fermi-liquid state: the crossed sliding Luttinger liquid phase. In this phase the system exhibits a finite-temperature, long-wavelength, isotropic electric conductivity that diverges as a power law in temperature T as T?0. This two-dimensional system has many properties of a true isotropic Luttinger liquid, though at zero temperature it becomes anisotropic. An extension of this model to a three-dimensional stack exhibits a much higher in-plane conductivity than the conductivity in a perpendicular direction.

Ranjan Mukhopadhyay; C. L. Kane; T. C. Lubensky

2001-07-09T23:59:59.000Z

296

THE CRYSTAL CLOCK  

Science Journals Connector (OSTI)

...crystal are connected between the grid and filament of the oscillator tube, a grid leak being connected across the crystal to provide the proper grid bias. A parallel resonant circuit...cycles, and a mercury damped flywheel used to reduce hunting. As...

W. A. Marrison

1930-01-01T23:59:59.000Z

297

Roughening transition and helium crystals  

Science Journals Connector (OSTI)

Crystal shapes or crystal growth mechanisms depend drastically on whether the crystal surface is smooth or rough, i.e. whether the temperature is lower or higher than its roughening temperature. Helium appeared r...

S. Balibar; F. Gallet; E. Rolley; P. E. Wolf

1985-01-01T23:59:59.000Z

298

Laser induced melting and crystallization of boron doped amorphous silicon  

SciTech Connect

Transient reflectivity experiments have been performed to measure the dynamics of laser-induced melting of amorphous silicon (a-Si) and the crystallization to {micro}c-Si of films with different thicknesses on Corning 7059 glass. The laser-induced melting takes place with a velocity of 13 to 24 m/s, while the solidification is about a factor 10 slower. The crystallization starts at the Si/glass interface and at the surface. In the center of the films Si remains liquid for an extended period of time. The crystallization dynamics point towards an heterogeneous morphology of laser-crystallized Si, where the surface and the interface layers are composed of small grains and the bulk of larger grains.

Nebel, C.E.; Schoeniger, S.; Dahlheimer, B.; Stutzmann, M.

1997-07-01T23:59:59.000Z

299

Quartz Crystal Model  

Science Journals Connector (OSTI)

... The shell and display tiers are made of sheet lucite and the plates are lucite, roughened to appear like etched quartz. The plates include those used for oscillators and filters. ...

1944-09-23T23:59:59.000Z

300

Enhanced Bioaccumulation of Heavy Metals by Bacterial Cells Displaying  

E-Print Network (OSTI)

Enhanced Bioaccumulation of Heavy Metals by Bacterial Cells Displaying Synthetic Phytochelatins for enhanced bioaccumulation of toxic metals. Synthetic genes encoding for several metal strategy for develop- ing high-affinity bioadsorbents suitable for heavy metal removal. © 2000 John Wiley

Chen, Wilfred

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


301

Display of probability densities for data from a continuous distribution  

E-Print Network (OSTI)

Based on cumulative distribution functions, Fourier series expansion and Kolmogorov tests, we present a simple method to display probability densities for data drawn from a continuous distribution. It is often more efficient than using histograms.

Bernd A. Berg

2011-05-03T23:59:59.000Z

302

Modified Cooper Harper scales for assessing unmanned vehicle displays  

E-Print Network (OSTI)

Unmanned vehicle (UV) displays are often the only information link between operators and vehicles, so their design is critical to mission success. However, there is currently no standardized methodology for operators to ...

Donmez, Birsen

303

Haptic overlay device for flat panel touch displays  

Science Journals Connector (OSTI)

In an effort to present users with an increasing amount of information, many industries including automotive and aerospace are adopting flat panel touch displays as a user interface. These interfaces are becoming popular due to their reconfigurability ...

David Wang; Kevin Tuer; Mauro Rossi; Joseph Shu

2004-03-01T23:59:59.000Z

304

Training Room Equipment Instructions Projector and TV Display  

E-Print Network (OSTI)

Training Room Equipment Instructions Projector and TV Display The control panel on the wall are connected to a training room computer and room is equipped with a keyboard, mouse and clicker. Connect USB

Crawford, T. Daniel

305

Space to Think: Large, High-Resolution Displays for Sensemaking  

SciTech Connect

Space supports human cognitive abilities in a myriad of ways. The note attached to the side of the monitor, the papers spread out on the desk, diagrams scrawled on a whiteboard, and even the keys left out on the counter are all examples of using space to recall, reveal relationships, and think. Technological advances have made it possible to construct large display environments in which space has real meaning. This paper examines how increased space affects the way displays are regarded and used within the context of the cognitively demanding task of sensemaking. A study was conducted observing analysts using a prototype large, high-resolution display to solve an analytic problem. This paper reports on the results of this study and suggests a number of potential design criteria for future sensemaking tools developed for large, high-resolution displays.

Andrews, Christopher P.; Endert, Alexander; North, Chris

2010-05-05T23:59:59.000Z

306

WESTERN GREAT PLAINS BIG RIVER FLOODPLAIN extent exaggerated for display  

E-Print Network (OSTI)

WESTERN GREAT PLAINS BIG RIVER FLOODPLAIN G.Kittel extent exaggerated for display CAREX/GRAVEL SHORE SPARSELY VEGETATED ALLIANCE Riverine Gravel Flats Great Plains Sparse Vegetation POPULUS DELTOIDES Southern Plains Herbaceous Vegetation SYMPHORICARPOS OCCIDENTALIS TEMPORARILY FLOODED SHRUBLAND ALLIANCE

307

PAPILLON: Designing Curved Display Surfaces With Printed Optics  

E-Print Network (OSTI)

. It is based on 3D printed optics, where the surface of the display is constructed as a bundle of printed light Interfaces - Graphical user interfaces; Input devices and strategies. Keywords: 3D printing, fabrication

Poupyrev, Ivan

308

pCubee: a perspective-corrected handheld cubic display  

Science Journals Connector (OSTI)

In this paper, we describe the design of a personal cubic display that offers novel interaction techniques for static and dynamic 3D content. We extended one-screen Fish Tank VR by arranging five small LCD panels into a box shape that is light and compact ... Keywords: 3d visualization, fish tank vr, handheld device, multi-screen display, physical interaction, user evaluation, user interface

Ian Stavness; Billy Lam; Sidney Fels

2010-04-01T23:59:59.000Z

309

A comparison of nuclear reactor control room display panels  

E-Print Network (OSTI)

complex and time consuming task. It is expected that the control room of future commercial nuclear reactor power plants will change considerably as a result of these studies. Currently there are literally hundreds of displays and controls...: Dr. Rodger S. Koppa A study was conducted to investigate the use of computer generated displays to operate nuclear reactor power plants. The AGN-201 reactor at Texas A&M university was the reactor studied. After observing several licensed reactor...

Bowers, Frances Renae

2012-06-07T23:59:59.000Z

310

Computational analysis of crystallization trials  

Science Journals Connector (OSTI)

A system for the automatic classification of images from crystallization trials for use in conjunction with a high-throughput robotic crystallization platform is described.

Spraggon, G.

2002-10-21T23:59:59.000Z

311

Method of forming a spacer for field emission flat panel displays  

DOE Patents (OSTI)

Spacers are disclosed for applications such as field emission flat panel displays and vacuum microelectronics, and which involves the application of aerogel/xerogel technology to the formation of the spacer. In a preferred approach the method uses a mold and mold release agent wherein the gel precursor is a liquid which can be applied to the mold filling holes which expose the substrate (either the baseplate or the faceplate). A release agent is applied to the mold prior to precursor application to ease removal of the mold after formation of the dielectric spacer. The shrinkage of the gel during solvent extraction also improves mold removal. The final spacer material is a good dielectric, such as silica, secured to the substrate. 3 figs.

Bernhardt, A.F.; Contolini, R.J.

1997-08-19T23:59:59.000Z

312

Seagate Crystal Reports - RADCM  

Office of Environmental Management (EM)

Sludge, Salt, Liquid Sludge, Salt, Liquid WASTE STREAM CODE: 02113 STREAM NAME:Sludge, Salt, Liquid MPC NAME:Aqueous Liquids/Slurries TOTAL CURIES: Approved Volume : Future Volume Avg: Future Volume Lower Limit: Future Volume Upper Limit: 100.000 Sludge, Salt, Liquid Isotopes Americium-241 Avg Concentration: 3.4967E-001 Ci/m3 Low Limit Concent: Upper Limit Concent: Cadmium-113m Avg Concentration: 8.4542E-002 Ci/m3 Low Limit Concent: Upper Limit Concent: Niobium-93m Avg Concentration: 1.8159E-002 Ci/m3 Low Limit Concent: Upper Limit Concent: Protactinium-231 Avg Concentration: 7.8039E-004 Ci/m3 Low Limit Concent: Upper Limit Concent: Europium-152 Avg Concentration: 7.4037E-003 Ci/m3 Low Limit Concent: Upper Limit Concent: Plutonium-240 Avg Concentration: 4.4672E-002 Ci/m3 Low Limit Concent: Upper Limit Concent:

313

Liquid level detector  

DOE Patents (OSTI)

A liquid level detector for conductive liquids for vertical installation in a tank, the detector having a probe positioned within a sheath and insulated therefrom by a seal so that the tip of the probe extends proximate to but not below the lower end of the sheath, the lower end terminating in a rim that is provided with notches, said lower end being tapered, the taper and notches preventing debris collection and bubble formation, said lower end when contacting liquid as it rises will form an airtight cavity defined by the liquid, the interior sheath wall, and the seal, the compression of air in the cavity preventing liquid from further entry into the sheath and contact with the seal. As a result, the liquid cannot deposit a film to form an electrical bridge across the seal.

Tshishiku, Eugene M. (Augusta, GA)

2011-08-09T23:59:59.000Z

314

Raman scattering in crystals  

SciTech Connect

A tutorial presentation is given of Raman scattering in crystals. The physical concepts are emphasized rather than the detailed mathematical formalism. Starting with an introduction to the concepts of phonons and conservation laws, the effects of photon-phonon interactions are presented. This interaction concept is shown for a simple cubic crystal and is extended to a uniaxial crystal. The correlation table method is used for determining the number and symmetry of the Raman active modes. Finally, examples are given to illustrate the relative ease of using this group theoretical method and the predictions are compared with measured Raman spectra. 37 refs., 17 figs., 6 tabs.

Edwards, D.F.

1988-09-30T23:59:59.000Z

315

Ultrasonic liquid level detector  

DOE Patents (OSTI)

An ultrasonic liquid level detector for use within a shielded container, the detector being tubular in shape with a chamber at its lower end into which liquid from in the container may enter and exit, the chamber having an ultrasonic transmitter and receiver in its top wall and a reflector plate or target as its bottom wall whereby when liquid fills the chamber a complete medium is then present through which an ultrasonic wave may be transmitted and reflected from the target thus signaling that the liquid is at chamber level.

Kotz, Dennis M. (North Augusta, SC); Hinz, William R. (Augusta, GA)

2010-09-28T23:59:59.000Z

316

Crystals and Plants  

NLE Websites -- All DOE Office Websites (Extended Search)

Crystals and Plants Crystals and Plants Name: Diab Location: N/A Country: N/A Date: N/A Question: What will the likely effects of crystallized filaments in plant cells be? I had noticed that moth balls (para dichlorbenzene) tends within a very short temperature range to transform from a solid to gas and back to solid in the form of crystal filaments. I been wondering about the likely effects of an experiment in which a plant is placed in a chamber saturated with the fumes of a substance that had the same transformation properties of its state but none of the toxic effects be on the plants and will such filaments form inside the cell and rearrange its DNA strands or kill it outright? Replies: The following might be helpful: http://biowww.clemson.edu/biolab/mitosis.html http://koning.ecsu.ctstateu.edu/Plant_Physiology/osmosis.html

317

SINGLE CRYSTAL NEUTRON DIFFRACTION.  

SciTech Connect

Single-crystal neutron diffraction measures the elastic Bragg reflection intensities from crystals of a material, the structure of which is the subject of investigation. A single crystal is placed in a beam of neutrons produced at a nuclear reactor or at a proton accelerator-based spallation source. Single-crystal diffraction measurements are commonly made at thermal neutron beam energies, which correspond to neutron wavelengths in the neighborhood of 1 Angstrom. For high-resolution studies requiring shorter wavelengths (ca. 0.3-0.8 Angstroms), a pulsed spallation source or a high-temperature moderator (a ''hot source'') at a reactor may be used. When complex structures with large unit-cell repeats are under investigation, as is the case in structural biology, a cryogenic-temperature moderator (a ''cold source'') may be employed to obtain longer neutron wavelengths (ca. 4-10 Angstroms). A single-crystal neutron diffraction analysis will determine the crystal structure of the material, typically including its unit cell and space group, the positions of the atomic nuclei and their mean-square displacements, and relevant site occupancies. Because the neutron possesses a magnetic moment, the magnetic structure of the material can be determined as well, from the magnetic contribution to the Bragg intensities. This latter aspect falls beyond the scope of the present unit; for information on magnetic scattering of neutrons see Unit 14.3. Instruments for single-crystal diffraction (single-crystal diffractometers or SCDs) are generally available at the major neutron scattering center facilities. Beam time on many of these instruments is available through a proposal mechanism. A listing of neutron SCD instruments and their corresponding facility contacts is included in an appendix accompanying this unit.

KOETZLE,T.F.

2001-03-13T23:59:59.000Z

318

Liquid heat capacity lasers  

DOE Patents (OSTI)

The heat capacity laser concept is extended to systems in which the heat capacity lasing media is a liquid. The laser active liquid is circulated from a reservoir (where the bulk of the media and hence waste heat resides) through a channel so configured for both optical pumping of the media for gain and for light amplification from the resulting gain.

Comaskey, Brian J. (Walnut Creek, CA); Scheibner, Karl F. (Tracy, CA); Ault, Earl R. (Livermore, CA)

2007-05-01T23:59:59.000Z

319

Carbon monoxide absorbing liquid  

SciTech Connect

The present disclosure is directed to a carbon monoxide absorbing liquid containing a cuprous ion, hydrochloric acid and titanum trichloride. Titanium trichloride is effective in increasing the carbon monoxide absorption quantity. Furthermore, titanium trichloride remarkably increases the oxygen resistance. Therefore, this absorbing liquid can be used continuously and for a long time.

Arikawa, Y.; Horigome, S.; Kanehori, K.; Katsumoto, M.

1981-07-07T23:59:59.000Z

320

Precision liquid level sensor  

DOE Patents (OSTI)

A precision liquid level sensor utilizes a balanced R. F. bridge, each arm including an air dielectric line. Changes in liquid level along one air dielectric line imbalance the bridge and create a voltage which is directly measurable across the bridge.

Field, Michael E. (Albuquerque, NM); Sullivan, William H. (Albuquerque, NM)

1985-01-01T23:59:59.000Z

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


321

Resourceful Kansas Puts Energy Efficient Technology on Display,  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resourceful Kansas Puts Energy Efficient Technology on Display, Resourceful Kansas Puts Energy Efficient Technology on Display, Demonstrates Cost-Saving Benefits Resourceful Kansas Puts Energy Efficient Technology on Display, Demonstrates Cost-Saving Benefits June 2, 2011 - 3:45pm Addthis One of Riley County Public Works' new wind turbines. | Courtesy of: Riley County Public Works One of Riley County Public Works' new wind turbines. | Courtesy of: Riley County Public Works Lindsey Geisler Lindsey Geisler Public Affairs Specialist, Office of Public Affairs It turns out there's more to harvest in Kansas than just the wheat and soybeans. As one of the windiest states in the country, it's a great place to harness wind and solar power. And through the Department of Energy's Energy Efficiency and Conservation Block Grant program, the

322

Resourceful Kansas Puts Energy Efficient Technology on Display,  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resourceful Kansas Puts Energy Efficient Technology on Display, Resourceful Kansas Puts Energy Efficient Technology on Display, Demonstrates Cost-Saving Benefits Resourceful Kansas Puts Energy Efficient Technology on Display, Demonstrates Cost-Saving Benefits June 2, 2011 - 3:45pm Addthis One of Riley County Public Works' new wind turbines. | Courtesy of: Riley County Public Works One of Riley County Public Works' new wind turbines. | Courtesy of: Riley County Public Works Lindsey Geisler Lindsey Geisler Public Affairs Specialist, Office of Public Affairs It turns out there's more to harvest in Kansas than just the wheat and soybeans. As one of the windiest states in the country, it's a great place to harness wind and solar power. And through the Department of Energy's Energy Efficiency and Conservation Block Grant program, the

323

Seagate Crystal Reports - RADCM  

Office of Environmental Management (EM)

Texas Texas SITE: Pantex PROGRAM: DP WASTE TYPE: Low Level Waste OPERATIONS OFFICE: Albuquerque Operations Office % of Stream Pantex - Low Level Waste - Organic Liquids WASTE STREAM CODE: 03597 STREAM NAME:Organic Liquids MPC NAME:Organic Liquids TOTAL CURIES: Approved Volume : Future Volume Avg: Future Volume Lower Limit: Future Volume Upper Limit: 100.000 Organic Liquids Isotopes Hydrogen-3 Avg Concentration: 2.0000E+003 dpm/ml Low Limit Concent:2.0000E+000 dpm/m l Upper Limit Concent:3.0000E+003 dpm/ml Uranium-238 Avg Concentration: 5.0000E+002 dpm/ml Low Limit Concent:2.0000E+000 dpm/m l Upper Limit Concent:1.0000E+003 dpm/ml % of Stream Pantex - Low Level Waste - Burning Ground Ash WASTE STREAM CODE: 03598 STREAM NAME:Burning Ground Ash MPC NAME:Inorganic Homogeneous Solids TOTAL CURIES:

324

Liquid Fuels Market Module  

U.S. Energy Information Administration (EIA) Indexed Site

Liquid Fuels Market Module Liquid Fuels Market Module This page inTenTionally lefT blank 145 U.S. Energy Information Administration | Assumptions to the Annual Energy Outlook 2013 Liquid Fuels Market Module The NEMS Liquid Fuels Market Module (LFMM) projects petroleum product prices and sources of supply for meeting petroleum product demand. The sources of supply include crude oil (both domestic and imported), petroleum product imports, unfinished oil imports, other refinery inputs (including alcohols, ethers, esters, corn, biomass, and coal), natural gas plant liquids production, and refinery processing gain. In addition, the LFMM projects capacity expansion and fuel consumption at domestic refineries. The LFMM contains a linear programming (LP) representation of U.S. petroleum refining

325

Reading Comprehension - Liquid Nitrogen  

NLE Websites -- All DOE Office Websites (Extended Search)

Liquid Nitrogen Liquid Nitrogen Nitrogen is the most common substance in Earth's _________ crust oceans atmosphere trees . In the Earth's atmosphere, nitrogen is a gas. The particles of a gas move very quickly. They run around and bounce into everyone and everything. The hotter a gas is, the _________ slower faster hotter colder the particles move. When a gas is _________ cooled warmed heated compressed , its particles slow down. If a gas is cooled enough, it can change from a gas to a liquid. For nitrogen, this happens at a very _________ strange warm low high temperature. If you want to change nitrogen from a gas to a liquid, you have to bring its temperature down to 77 Kelvin. That's 321 degrees below zero _________ Kelvin Celsius Centigrade Fahrenheit ! Liquid nitrogen looks like water, but it acts very differently. It

326

Charge Transport in Solid and Liquid Ar, Kr, and Xe  

Science Journals Connector (OSTI)

This paper reports an investigation of the drift velocity of excess electrons in solid and liquid Ar, Kr, and Xe. After purification of the commercially available gas, thin crystal specimens (100-600 ?m) were grown from the liquid between parallel electrodes in a chamber attached to a miniature cryostat. Pulses of 40-keV electrons were used to generate the charge carriers in both liquids and solids. This technique overcomes the limitations inherent in previously applied methods and has made it possible to investigate the drift velocity over a range of applied fields from 10 V cm-1 to 100 kV cm-1. Near the triple point, the low-field mobility ?0 in solid Ar, Kr, and Xe was found to be 1000, 3700, and about 4500 cm2sec-1V-1, respectively. In the liquids the corresponding mobilities were 475, 1800, and 2200 cm2sec-1V-1. The temerature dependence of ?0 has been measured on Ar crystals, and the results indicate that ?0 is determined by acoustic scattering. The electron lifetime appears to be controlled predominantly by oxygen impurities. Pronounced hot-electron effects are observed in drift-velocity—versus—field curves for both liquids and solids, and their fit to the Shockley hot-electron theory has been investigated. In the high-field region all the curves show an almost complete saturation with field. The theory of Cohen and Lekner applied to liquid Ar fits the results over most of the field range, suggesting that the deviations from the Shockley theory at higher electron temperatures are associated with an increase in the value of the structure factor. In solid Ar or Kr, positive holes do not appear to be mobile, but in Xe crystals a hole mobility of about 2×10-2 cm2sec-1V-1 was found. The implications of these results are briefly discussed.

L. S. Miller; S. Howe; W. E. Spear

1968-02-15T23:59:59.000Z

327

Interactions of Endoglucanases with Amorphous Cellulose Films Resolved by Neutron Reflectometry and Quartz Crystal Microbalance with Dissipation Monitoring  

SciTech Connect

A study of the interaction of four endoglucanases with amorphous cellulose films by neutron reflectometry (NR) and quartz crystal microbalance with dissipation monitoring (QCM-D) is reported. The endoglucanases include a mesophilic fungal endoglucanase (Cel45A from H. insolens), a processive endoglucanase from a marine bacterium (Cel5H from S. degradans), and two from thermophilic bacteria (Cel9A from A. acidocaldarius and Cel5A from T. maritima). The use of amorphous cellulose is motivated by the promise of ionic liquid pretreatment as a second generation technology that disrupts the native crystalline structure of cellulose. The endoglucanases displayed highly diverse behavior. Cel45A and Cel5H, which possess carbohydrate-binding modules (CBMs), penetrated and digested within the bulk of the films to a far greater extent than Cel9A and Cel5A, which lack CBMs. While both Cel45A and Cel5H were active within the bulk of the films, striking differences were observed. With Cel45A, substantial film expansion and interfacial broadening were observed, whereas for Cel5H the film thickness decreased with little interfacial broadening. These results are consistent with Cel45A digesting within the interior of cellulose chains as a classic endoglucanase, and Cel5H digesting predominantly at chain ends consistent with its designation as a processive endoglucanase.

Cheng, Gang [Joint Bioenergy Institute; Liu, Zelin [Virginia Polytechnic Institute and State University (Virginia Tech); Kent, Michael S [Sandia National Laboratories (SNL); Majewski, Jaroslaw [Los Alamos National Laboratory (LANL); Michael, Jablin [Los Alamos National Laboratory (LANL); Jaclyn, Murton K [Sandia National Laboratories (SNL); Halbert, Candice E [ORNL; Datta, Supratim [Joint Bioenergy Institute; Chao, Wang [Virginia Polytechnic Institute and State University (Virginia Tech); Brown, Page [Sandia National Laboratories (SNL)

2012-01-01T23:59:59.000Z

328

Induced crystallization of single-chain polyethylene on a graphite surface: Molecular dynamics simulation  

Science Journals Connector (OSTI)

Molecular dynamics (MD) simulations have been carried out on the crystallization of single-chain polyethylene (PE) which was adsorbed on a graphite (001) surface on one side and exposed to vacuum on the other at different temperatures. The MD simulation data have been analyzed to provide information about the crystallization process of polymer adsorbed on the solid substrate. The isothermal crystallization of PE proceeds in two steps: (1) adsorption and (2) orientation. The results detail the radial density distribution function, ordered parameters, local bond-orientational order parameters, and the local properties displayed in layers of the polymer parallel to the graphite and vacuum interfaces. It was also shown that the film thickness affected the critical crystallization temperature of the adsorbed polymer on the substrate surface. Furthermore, the influence of the graphite surface area on the crystallization of PE is discussed by comparing the crystallinity evolution of PE on graphite with different coverage.

Hua Yang (??); Xiao Jun Zhao (???); Miao Sun (??)

2011-07-14T23:59:59.000Z

329

Air Liquide - Biogas & Fuel Cells  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Liquide - Biogas & Fuel Cells Hydrogen Energy Biogas Upgrading Technology 12 June 2012 Charlie.Anderson@airliquide.com 2 Air Liquide, world leader in gases for industry,...

330

Sandia National Laboratories: ionic liquid  

NLE Websites -- All DOE Office Websites (Extended Search)

liquid Biofuels Blend Right In: Researchers Show Ionic Liquids Effective for Pretreating Mixed Blends of Biofuel Feedstocks On February 26, 2013, in Biofuels, Biomass, Energy,...

331

Liquid sampling system  

DOE Patents (OSTI)

A conduit extends from a reservoir through a sampling station and back to the reservoir in a closed loop. A jet ejector in the conduit establishes suction for withdrawing liquid from the reservoir. The conduit has a self-healing septum therein upstream of the jet ejector for receiving one end of a double-ended cannula, the other end of which is received in a serum bottle for sample collection. Gas is introduced into the conduit at a gas bleed between the sample collection bottle and the reservoir. The jet ejector evacuates gas from the conduit and the bottle and aspirates a column of liquid from the reservoir at a high rate. When the withdrawn liquid reaches the jet ejector the rate of flow therethrough reduces substantially and the gas bleed increases the pressure in the conduit for driving liquid into the sample bottle, the gas bleed forming a column of gas behind the withdrawn liquid column and interrupting the withdrawal of liquid from the reservoir. In the case of hazardous and toxic liquids, the sample bottle and the jet ejector may be isolated from the reservoir and may be further isolated from a control station containing remote manipulation means for the sample bottle and control valves for the jet ejector and gas bleed. 5 figs.

Larson, L.L.

1984-09-17T23:59:59.000Z

332

Liquid sampling system  

DOE Patents (OSTI)

A conduit extends from a reservoir through a sampling station and back to the reservoir in a closed loop. A jet ejector in the conduit establishes suction for withdrawing liquid from the reservoir. The conduit has a self-healing septum therein upstream of the jet ejector for receiving one end of a double-ended cannula, the other end of which is received in a serum bottle for sample collection. Gas is introduced into the conduit at a gas bleed between the sample collection bottle and the reservoir. The jet ejector evacuates gas from the conduit and the bottle and aspirates a column of liquid from the reservoir at a high rate. When the withdrawn liquid reaches the jet ejector the rate of flow therethrough reduces substantially and the gas bleed increases the pressure in the conduit for driving liquid into the sample bottle, the gas bleed forming a column of gas behind the withdrawn liquid column and interrupting the withdrawal of liquid from the reservoir. In the case of hazardous and toxic liquids, the sample bottle and the jet ejector may be isolated from the reservoir and may be further isolated from a control station containing remote manipulation means for the sample bottle and control valves for the jet ejector and gas bleed.

Larson, Loren L. (Idaho Falls, ID)

1987-01-01T23:59:59.000Z

333

ESSES 2003 2003, Carla Schlatter Ellis Display Management  

E-Print Network (OSTI)

1 ESSES 2003© 2003, Carla Schlatter Ellis Display Management: Sensing User Intention and Context (HOTOS 2003) 2ESSES 2003© 2003, Carla Schlatter Ellis Outline · Motivation and Research Objective · Face · Related Work ­ ACPI ­ Dark Windows #12;2 3ESSES 2003© 2003, Carla Schlatter Ellis Motivation · Current

Ellis, Carla

334

COLORADO PLATEAU PINYON-JUNIPER WOODLAND extent exaggerated for display  

E-Print Network (OSTI)

and foothills of the Colorado Plateau region from the Western Slope of Colorado to the Wasatch Range, and southCOLORADO PLATEAU PINYON-JUNIPER WOODLAND S.Kettler extent exaggerated for display JUNIPERUS at all (Reid et al. 1999). COLORADO PLATEAU PINYON-JUNIPER WOODLAND 1 REVISED: SEPTEMBER 2005 #12;A

335

COLORADO PLATEAU HANGING GARDEN extent exaggerated for display  

E-Print Network (OSTI)

are a small patch community type in the canyons of western Colorado. These highly localized environmentsCOLORADO PLATEAU HANGING GARDEN R.Rondeau extent exaggerated for display AQUILEGIA MICRANTHA differ somewhat in geology and species composition from those of the Colorado Plateau to the south

336

Retrieval models for audience selection in display advertising  

Science Journals Connector (OSTI)

Web applications often rely on user profiles of observed user actions, such as queries issued, page views, etc. In audience selection for display advertising, the audience that is likely to be responsive to a given ad campaign is identified via such ... Keywords: ad targeting, audience selection, retrieval models

Sarah K. Tyler; Sandeep Pandey; Evgeniy Gabrilovich; Vanja Josifovski

2011-10-01T23:59:59.000Z

337

Colour, design and reward: phenotypic integration of fleshy fruit displays  

E-Print Network (OSTI)

Colour, design and reward: phenotypic integration of fleshy fruit displays A. VALIDO*, H. M pivot around complex structures such as flowers and fruits, a central question is to what extent.g. Murren, 2002; Herrera et al., 2002; Pe´rez-Barrales et al., 2007; Pe´rez et al., 2007). Fleshy fruits

Jordano, Pedro

338

might not believe that someday soon your TV will display  

E-Print Network (OSTI)

" computer. For data like a Web page, this is no big deal. The computers can keep communicating, taking many your TV will display crisp-looking movies and sitcoms sent via the Internet. But electrical engineering for television and movies because it is nearly ubiquitous and handles digital data with incredible versatility

Girod, Bernd

339

Lightweight User Interfaces for Watch Based Displays Peter Hutterer  

E-Print Network (OSTI)

Lightweight User Interfaces for Watch Based Displays Peter Hutterer , Mark T. Smith , Bruce H Science University of South Australia Mawson Lakes, Adelaide, SA, 5095, Australia office@who-t.net bruce of the user's clothing, and removed from the pocket and held in the hand for operation. Recently, a number

Thomas, Bruce

340

Visualising Internet Traffic Data with Three-Dimensional Spherical Display  

E-Print Network (OSTI)

successful in this respect has proven to give good predictions about structural features of the InternetVisualising Internet Traffic Data with Three-Dimensional Spherical Display Ben Yip1 , Shea Goyette1 of visualising internet traffic data using the underlying spherical nature of the globe. The method uses data

Hong,Seokhee

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


341

SMART PodiumTM 500 Interactive pen display  

E-Print Network (OSTI)

register your SMART product, we'll notify you of new features and software upgrades. Register online environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed interactive pen display, read and understand the safety warnings and precautions in this user's guide

342

THE EFFECT OF FLORAL DISPLAY SIZE ON POLLINATOR VISITATION Introduction  

E-Print Network (OSTI)

. Hence they achieve higher fitness through the female function (= seed production). Another hypothesis is heritable, and pollinator behavior can drive selection for large display size. Rubber Rabbitbrush inflorescences. The flowers are pollinated by a variety of insects. Flower production exceeds seed production

Cavitt, John F.

343

Microporous Patterned Electrodes for Color-Matched Electrochromic Polymer Displays  

E-Print Network (OSTI)

Microporous Patterned Electrodes for Color-Matched Electrochromic Polymer Displays Pierre of electroactive and conducting polymers offers new opportunities for the design of materials for electrochromic the most promising electrochromic (EC) properties. Here, we report the use of highly porous metallized

Tanner, David B.

344

Person Aware Advertising Displays: Emotional, Cognitive, Physical Adaptation Capabilities  

E-Print Network (OSTI)

Person Aware Advertising Displays: Emotional, Cognitive, Physical Adaptation Capabilities advertising. In the future however, the ever more demanding audience will not be satisfied by today's contents the efficiency of outdoor advertising. The paper starts with a vision of out-of-home- media in the year 2034

345

ON THE IDENTIFICATION AND HAPTIC DISPLAY OF FRICTION  

E-Print Network (OSTI)

ON THE IDENTIFICATION AND HAPTIC DISPLAY OF FRICTION A DISSERTATION SUBMITTED TO THE DEPARTMENT by Christopher Richard All Rights Reserved #12;iv Abstract Although friction is an important phenomenon and greatly affects the way in which individ- uals interact with the world, friction is all but absent from

Stanford University

346

Interactive Weather Simulation and Visualization on a Display Wall  

E-Print Network (OSTI)

.hoai.ha,john.markus.bjorndalen,otto.anshus}@uit.no, {tormsh,daniels}@cs.uit.no Abstract. Numerical Weather Prediction models (NWP) used for op- erational Weather Model, WRF, Tiled Display Walls, Live Data Sets, On-Demand Computation. 1 Introduction Numerical Weather Prediction models for use in weather forecasting centers are often computed for a fixed static

Ha, Phuong H.

347

Toward Characterizing the Productivity Benefits of Very Large Displays  

E-Print Network (OSTI)

dramatically over the next four years. This price drop has already begun and the average computer consumer can power of the PC has fueled a powerful demand for ever larger and more capable display devices. Cathode models to measure their effectiveness for productivity applications. One approach to garnering extra

Rajamani, Sriram K.

348

The TV Turtle A Logo Graphics System for Raster Displays  

E-Print Network (OSTI)

The TV Turtle A Logo Graphics System for Raster Displays Henry Lieberman Logo Group MIT Artificial programming for raster and vector systems are illustrated with a description of the author's TV Turtle-like interactive programming language designed for use by kids, and is based on Logo's turtle geometry approach

Lieberman, Henry

349

Liquid-level detector  

DOE Patents (OSTI)

Aliquid level sensor is described which has a pair of upright conductors spaced by an insulator defining a first high resistance path between the conductors. An electrically conductive path is interposed between the upright conductors at a discrete location at which liquid level is to be measured. It includes a liquid accessible gap of a dimension such that the electrical resistance across the conductor when the gap is filled with the liquid is detectably less than when the gap is emptied. The conductor might also be physically altered by temperature changes to serve also as an indicator of elevated temperature.

Not Available

1981-01-29T23:59:59.000Z

350

Liquid metal electric pump  

DOE Patents (OSTI)

An electrical pump for pumping liquid metals to high pressures in high temperature environments without the use of magnets or moving mechanical parts. The pump employs a non-porous solid electrolyte membrane, typically ceramic, specific to the liquid metal to be pumped. A DC voltage is applied across the thickness of the membrane causing ions to form and enter the membrane on the electrically positive surface, with the ions being neutralized on the opposite surface. This action provides pumping of the liquid metal from one side of the non-porous solid electrolyte membrane to the other. 3 figs.

Abbin, J.P.; Andraka, C.E.; Lukens, L.L.; Moreno, J.B.

1992-01-14T23:59:59.000Z

351

Investigation of Energy-Efficient Supermarket Display Cases  

SciTech Connect

Supermarkets represent one of the largest energy-intensive building groups in the commercial sector, consuming 2 to 3 million kWh/yr per store (ES-1). Over half of this energy use is for the refrigeration of food display cases and storage coolers. Display cases are used throughout a supermarket for the merchandising of perishable food products. The cases are maintained at air temperatures ranging from -10 to 35 F, depending upon the type of product stored. The operating characteristics and energy requirements of the refrigeration system are directly related to the refrigeration load. The sources of the display case refrigeration load consist of: (1) Moist and warm air infiltration through the open front of the case--air curtains are employed to inhibit this infiltration, but some ambient air is entrained, which adds a substantial portion to the refrigeration load. (2) Heat conduction through case panels and walls. (3) Thermal radiation from the ambient to the product and display case interior. (4) Internal thermal loads--the use of lights, evaporator fans, periodic defrosts, and antisweat heaters adds to the refrigeration load of the display case as well as directly consuming electric energy. The impact of each of these elements on the refrigeration load is very dependent upon case type (Figure ES-1). For example, air infiltration is the most significant portion of the refrigeration load for open, multi-deck cases, while radiation is the largest part of the load for tub-type cases. The door anti-sweat heaters represent a major share of the refrigeration load for frozen food door reach-in cases. Figure ES-2 shows the distribution of display cases in a typical supermarket (ES-2). Open, multi-deck, medium temperature display cases typically comprise about half of the refrigerated fixtures in a store (ES-3). In addition, medium temperature fixtures and storage coolers account for roughly 70 to 75 percent of the total store refrigeration load with open, multi-deck cases contributing about 3/4 of that fraction. Consequently, the focus of this investigation has tilted toward the open, vertical, multi-deck medium temperature case type. Various technologies and control methods are energy efficiency measures (EEMs) that could be applied to display cases and result in the reduction of the refrigeration load and of the energy consumption of the supermarket refrigeration system. An extensive evaluation of the EEMs was conducted in order to select those that met the following criteria: (1) Near-term implementation--All EEMs considered could be implemented with existing refrigeration hardware and technology. (2) Potential for energy-efficiency improvements--Energy savings and/or refrigeration load reduction must be obtained by the implementation of the EEM. (3) Enhancement of the ability to maintain target product temperature--Proper operation of the display case and maintenance of the stored product temperature could not be compromised by the use of the EEM. The energy impact of a number of viable display case EEMs was quantified by performing whole building hourly simulations. A special version of the U.S. Department of Energy's (DOE-2.3) program was used to develop a model of a supermarket. The model was then calibrated using available end-use monitored data to increase confidence in simulation results.

Walker, D.H.

2005-01-21T23:59:59.000Z

352

Oscillatory Hall Effect, Magnetoresistance, and Magnetic Susceptibility of a Graphite Single Crystal  

Science Journals Connector (OSTI)

The Hall coefficient, magnetoresistance, and magnetic susceptibility of a graphite single crystal have been measured at liquid helium temperatures and in magnetic fields up to 25 kilogauss. All three phenomena are periodic functions of reciprocal field and exhibit the same period for like orientations of the crystal axes with respect to the magnetic field. The phases however are different. Where possible, experiment and theory have been compared.

Ted G. Berlincourt and M. C. Steele

1955-05-15T23:59:59.000Z

353

MagLab Audio Dictionary: Crystals  

NLE Websites -- All DOE Office Websites (Extended Search)

What are Crystals? Now Playing: What are Crystals? Enable Javascript and Flash to stream the Magnet Minute Chris Wiebe Associated Links Quantum Materials Group New Crystal Growth...

354

Demazure Crystals, Kirillov-Reshetikhin Crystals, and the Energy Function  

E-Print Network (OSTI)

It has previously been shown that, at least for non-exceptional Kac-Moody Lie algebras, there is a close connection between Demazure crystals and tensor products of Kirillov-Reshetikhin crystals. In particular, certain ...

Schilling, Anne

355

Renewable Liquid Fuels Reforming  

Energy.gov (U.S. Department of Energy (DOE))

The Program anticipates that distributed reforming of biomass-derived liquid fuels could be commercial during the transition to hydrogen and used in the mid- and long-term time frames.

356

Hall effect in the two-dimensional Luttinger liquid  

Science Journals Connector (OSTI)

The temperature dependence of the Hall effect in the normal state is a commom theme of all the cuprate superconductors and has been one of the more puzzling observations on these puzzling materials. We describe a general scheme within the Luttinger liquid theory of these two-dimensional quantum fluids which corrrelates the anomalous Hall and resistivity observations on a wide variety of both pure and doped single crystals, especially the data in the accompanying Letter of Chien, Wang, and Ong.

P. W. Anderson

1991-10-07T23:59:59.000Z

357

Two-stage crystallization of charged colloids at low supersaturations  

E-Print Network (OSTI)

We report simulations on the homogeneous liquid-fcc nucleation of charged colloids for both low and high contact energy values. As a precursor for crystal formation, we observe increased local order at the position where the crystal will form, but no correlations with the local density. Thus, the nucleation is driven by order fluctuations rather than density fluctuations. Our results also show that the transition involves two stages in both cases, first a transition liquid-bcc, followed by a bcc-hcp/fcc transition. Both transitions have to overcome free energy barriers, so that a spherical bcc-like cluster is formed first, in which the final fcc-like structure is nucleated mainly at the surface of the crystallite. This means that the bcc-fcc phase transition is a heterogeneous nucleation, even though we start from a homogeneous bulk liquid. The height of the bcc-hcp/fcc free energy barrier strongly depends on the contact energies of the colloids. For low contact energy this barrier is low, so that the bcc-hcp/fcc transition happens spontaneously. For the higher contact energy, the second barrier is too high to be crossed spontaneously by the colloidal system. However, it was possible to ratchet the system over the second barrier and to transform the bcc nuclei into the stable hcp/fcc phase. The transitions are dominated by the first liquid-bcc transition and can be described by Classical Nucleation Theory using an effective surface tension.

Kai Kratzer; Axel Arnold

2014-10-31T23:59:59.000Z

358

Crystallization of Congo Red  

Science Journals Connector (OSTI)

... It has been confirmed that the potassium salt of Congo Red will crystallize as needles from various ethyl alcohol-water mixtures, but only with ... observation during a trial of various salting-out procedures, however, the potassium salt of Congo Red has been found to be precipitated in crystalline form by salting out with potassium ...

PETER MITCHELL

1950-05-13T23:59:59.000Z

359

Crystals of Platinum and Palladium  

Science Journals Connector (OSTI)

... will be found partially fused. The ribbon upon which crystals have been formed presents a roughened appearance.

J. JOLY

1891-04-09T23:59:59.000Z

360

Photonic crystal heterostructures and interfaces  

Science Journals Connector (OSTI)

Photonic crystal heterostructures, like their semiconductor quantum electronic counterparts, generate complex function from simple, well-understood building blocks. They have led to compact photonic crystal-based waveguides and record-quality-factor resonant cavities. Here the progress on the experimental realization of photonic crystal heterostructure devices, and on the development of convenient, intuitive, and computationally efficient models of devices that unite multiple finite-sized photonic crystal media to engineer photon localization and guidance is summarized.

Emanuel Istrate and Edward H. Sargent

2006-05-16T23:59:59.000Z

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


361

Ultraslow growth rates of giant gypsum crystals  

Science Journals Connector (OSTI)

...gypsum crystals of Naica ore mines in Chihuahua, Mexico, a challenging subject in mineral...gypsum crystals of Naica ore mines in Chihuahua, Mexico, a challenging subject in...geological timescale. age anhydrite Chihuahua Mexico cooling crystal growth crystallization...

A. E. S. Van Driessche; J. M. García-Ruíz; K. Tsukamoto; L. D. Patiño-Lopez; H. Satoh

2011-01-01T23:59:59.000Z

362

Multi-manoeuvrable UHV crystal holder (for X-ray spectrometer)  

Science Journals Connector (OSTI)

The design of a multi-manoeuvrable ultrahigh vacuum (UHV) crystal holder for a new soft X-ray spectrometer is described. The holder is capable of adjusting the position of the crystal by 80 mm in the z direction which is normal to the Rowland circumference of the spectrometer and 8 mm in the orthogonal x and y directions. Angular adjustment is allowed within a maximum range of 10 degrees . All adjustments are accurately reproducible and are made from outside the UHV system. The holder also makes provision for cooling of the crystal by a liquid or gas coolant.

S Ottosson

1976-01-01T23:59:59.000Z

363

PDF Display Problems and Solutions, Information Technology Division, ITD  

NLE Websites -- All DOE Office Websites (Extended Search)

Adobe PDF Help Document Adobe PDF Help Document ITD Home | ITD Helpdesk User Notice: This guide is provided for reference only. Technical support will not be available except to the Brookhaven National Laboratory user community. What to do when PDF files do not open correctly or when your browser displays a blank white screen after trying to open the PDF file... If the Adobe Acrobat viewer doesn't display PDF files inside your Web browser as expected, try Solution 1 or update to the latest version of the Acrobat viewer. Some PDF's use security features that may not run in older versions. If Solution 1 does not work, I would try Solution 2 and make sure that the Acrobat viewer can read the PDF file by downloading it to your hard disk. If these solutions do not fix your problem, try applying one or more of the other solutions listed below.

364

Dose factor entry and display tool for BNCT radiotherapy  

DOE Patents (OSTI)

A system for use in Boron Neutron Capture Therapy (BNCT) radiotherapy planning where a biological distribution is calculated using a combination of conversion factors and a previously calculated physical distribution. Conversion factors are presented in a graphical spreadsheet so that a planner can easily view and modify the conversion factors. For radiotherapy in multi-component modalities, such as Fast-Neutron and BNCT, it is necessary to combine each conversion factor component to form an effective dose which is used in radiotherapy planning and evaluation. The Dose Factor Entry and Display System is designed to facilitate planner entry of appropriate conversion factors in a straightforward manner for each component. The effective isodose is then immediately computed and displayed over the appropriate background (e.g. digitized image).

Wessol, Daniel E. (Bozeman, MT); Wheeler, Floyd J. (Idaho Falls, ID); Cook, Jeremy L. (Greeley, CO)

1999-01-01T23:59:59.000Z

365

Quantum ferroelectrics of mixed crystals  

Science Journals Connector (OSTI)

The inverse dielectric susceptibility for quantum ferroelectrics in mixed crystals is computed. As in the perfect crystals we find a logarithmic correction to the quantum mean-field theory. For mixed crystals the correction increases faster in the vicinity of the critical point.

D. Schmeltzer

1984-03-01T23:59:59.000Z

366

Silicon crystal growing by oscillating crucible technique  

DOE Patents (OSTI)

A process for growing silicon crystals from a molten melt comprising oscillating the container during crystal growth is disclosed.

Schwuttke, G.H.; Kim, K.M.; Smetana, P.

1983-08-03T23:59:59.000Z

367

Frostbite Theater - Liquid Nitrogen Experiments - Dry Ice vs. Liquid  

NLE Websites -- All DOE Office Websites (Extended Search)

Egg + Liquid Nitrogen + Time-lapse! Egg + Liquid Nitrogen + Time-lapse! Previous Video (Egg + Liquid Nitrogen + Time-lapse!) Frostbite Theater Main Index Next Video (Liquid Nitrogen Cooled Dry Ice in Water!) Liquid Nitrogen Cooled Dry Ice in Water! Dry Ice vs. Liquid Nitrogen! Dry ice is cold. Liquid nitrogen is cold, too. What happens when the two are mixed together? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: Have you ever wondered what happens when you mix dry ice and liquid nitrogen? Steve: Well, we just happen to have a chunk of dry ice left over from when we filmed 'How to Make a Cloud Chamber,' and here at Jefferson Lab, liquid nitrogen flows like water, so we're going to find out!

368

Durable electrooptic devices comprising ionic liquids  

DOE Patents (OSTI)

Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF.sub.3SO.sub.3.sup.-), bis(trifluoromethylsulfonyl)imide ((CF.sub.3SO.sub.2).sub.2N.sup.-), bis(perfluoroethylsulfonyl)imide ((CF.sub.3CF.sub.2SO.sub.2).sub.2N.sup.-) and tris(trifluoromethylsulfonyl)methide ((CF.sub.3SO.sub.2).sub.3C.sup.-). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes.

Warner, Benjamin P. (Los Alamos, NM); McCleskey, T. Mark (Los Alamos, NM); Burrell, Anthony K. (Los Alamos, NM)

2006-10-10T23:59:59.000Z

369

Gas-Liquid Coexistence in the Primitive Model for Water  

E-Print Network (OSTI)

We evaluate the location of the gas-liquid coexistence line and of the associated critical point for the primitive model for water (PMW), introduced by Kolafa and Nezbeda [J. Kolafa and I. Nezbeda, Mol. Phys. 61, 161 (1987)]. Besides being a simple model for a molecular network forming liquid, the PMW is representative of patchy proteins and novel colloidal particles interacting with localized directional short-range attractions. We show that the gas-liquid phase separation is metastable, i.e. it takes place in the region of the phase diagram where the crystal phase is thermodynamically favored, as in the case of articles interacting via short-range attractive spherical potentials. Differently from spherical potentials, we do not observe crystallization close to the critical point. The region of gas-liquid instability of this patchy model is significantly reduced as compared to equivalent models of spherically interacting particles, confirming the possibility of observing kinetic arrest in an homogeneous sample driven by bonding as opposed to packing.

F. Romano; P. Tartaglia; F. Sciortino

2007-05-08T23:59:59.000Z

370

Electronic Structure of Cobalt Nanocrystals Suspended in Liquid  

NLE Websites -- All DOE Office Websites (Extended Search)

Electronic Structure of Cobalt Nanocrystals Suspended in Liquid Print Electronic Structure of Cobalt Nanocrystals Suspended in Liquid Print Advances in the synthesis of crystals of nanometer dimensions, narrow size distribution, and controlled shape have generated interest because of the potential to create novel materials with tailored physical and chemical properties. New properties arise from quantum confinement effects and from the increasing fraction of surface atoms with unique bonding and geometrical configurations. At the ALS, an international team of scientists has performed an electronic structure study of colloidal nanocrystals-nanocrystals suspended in the liquid solvent in which they were grown. A range of photon-in/photon-out spectroscopies, including x-ray absorption spectroscopy (XAS), was applied. These techniques are element-selective, as they involve core atomic levels and can thus probe the local electronic structure of selected species in complex systems.

371

Electronic Structure of Cobalt Nanocrystals Suspended in Liquid  

NLE Websites -- All DOE Office Websites (Extended Search)

Electronic Structure of Cobalt Nanocrystals Suspended in Liquid Print Electronic Structure of Cobalt Nanocrystals Suspended in Liquid Print Advances in the synthesis of crystals of nanometer dimensions, narrow size distribution, and controlled shape have generated interest because of the potential to create novel materials with tailored physical and chemical properties. New properties arise from quantum confinement effects and from the increasing fraction of surface atoms with unique bonding and geometrical configurations. At the ALS, an international team of scientists has performed an electronic structure study of colloidal nanocrystals-nanocrystals suspended in the liquid solvent in which they were grown. A range of photon-in/photon-out spectroscopies, including x-ray absorption spectroscopy (XAS), was applied. These techniques are element-selective, as they involve core atomic levels and can thus probe the local electronic structure of selected species in complex systems.

372

Electronic Structure of Cobalt Nanocrystals Suspended in Liquid  

NLE Websites -- All DOE Office Websites (Extended Search)

Electronic Structure of Cobalt Nanocrystals Suspended in Liquid Print Electronic Structure of Cobalt Nanocrystals Suspended in Liquid Print Advances in the synthesis of crystals of nanometer dimensions, narrow size distribution, and controlled shape have generated interest because of the potential to create novel materials with tailored physical and chemical properties. New properties arise from quantum confinement effects and from the increasing fraction of surface atoms with unique bonding and geometrical configurations. At the ALS, an international team of scientists has performed an electronic structure study of colloidal nanocrystals-nanocrystals suspended in the liquid solvent in which they were grown. A range of photon-in/photon-out spectroscopies, including x-ray absorption spectroscopy (XAS), was applied. These techniques are element-selective, as they involve core atomic levels and can thus probe the local electronic structure of selected species in complex systems.

373

Heating-induced glass-glass and glass-liquid transformations in computer simulations of water  

SciTech Connect

Water exists in at least two families of glassy states, broadly categorized as the low-density (LDA) and high-density amorphous ice (HDA). Remarkably, LDA and HDA can be reversibly interconverted via appropriate thermodynamic paths, such as isothermal compression and isobaric heating, exhibiting first-order-like phase transitions. We perform out-of-equilibrium molecular dynamics simulations of glassy water using the ST2 model to study the evolution of LDA and HDA upon isobaric heating. Depending on pressure, glass-to-glass, glass-to-crystal, glass-to-vapor, as well as glass-to-liquid transformations are found. Specifically, heating LDA results in the following transformations, with increasing heating pressures: (i) LDA-to-vapor (sublimation), (ii) LDA-to-liquid (glass transition), (iii) LDA-to-HDA-to-liquid, (iv) LDA-to-HDA-to-liquid-to-crystal, and (v) LDA-to-HDA-to-crystal. Similarly, heating HDA results in the following transformations, with decreasing heating pressures: (a) HDA-to-crystal, (b) HDA-to-liquid-to-crystal, (c) HDA-to-liquid (glass transition), (d) HDA-to-LDA-to-liquid, and (e) HDA-to-LDA-to-vapor. A more complex sequence may be possible using lower heating rates. For each of these transformations, we determine the corresponding transformation temperature as function of pressure, and provide a P-T “phase diagram” for glassy water based on isobaric heating. Our results for isobaric heating dovetail with the LDA-HDA transformations reported for ST2 glassy water based on isothermal compression/decompression processes [Chiu et al., J. Chem. Phys. 139, 184504 (2013)]. The resulting phase diagram is consistent with the liquid-liquid phase transition hypothesis. At the same time, the glass phase diagram is sensitive to sample preparation, such as heating or compression rates. Interestingly, at least for the rates explored, our results suggest that the LDA-to-liquid (HDA-to-liquid) and LDA-to-HDA (HDA-to-LDA) transformation lines on heating are related, both being associated with the limit of kinetic stability of LDA (HDA)

Chiu, Janet; Giovambattista, Nicolas [Department of Physics, Brooklyn College of the City University of New York, Brooklyn, New York 11210 (United States)] [Department of Physics, Brooklyn College of the City University of New York, Brooklyn, New York 11210 (United States); Starr, Francis W. [Department of Physics, Wesleyan University, Middletown, Connecticut 06459 (United States)] [Department of Physics, Wesleyan University, Middletown, Connecticut 06459 (United States)

2014-03-21T23:59:59.000Z

374

Growth and properties of Lithium Salicylate single crystals  

SciTech Connect

An attractive feature of {sup 6}Li containing fluorescence materials that determines their potential application in radiation detection is the capture reaction with slow ({approx}< 100 keV) neutrons: {sup 6}Li + n = {sup 4}He + {sup 3}H + 4.8MeV. The use of {sup 6}Li-salicylate (LiSal, LiC{sub 6}H{sub 5}O{sub 3}) for thermal neutron detection was previously studied in liquid and polycrystalline scintillators. The studies showed that both liquid and polycrystalline LiSal scintillators could be utilized in pulse shape discrimination (PSD) techniques that enable separation of neutrons from the background gamma radiation. However, it was found that the efficiency of neutron detection using LiSal in liquid solutions was severely limited by its low solubility in commonly used organic solvents like, for example, toluene or xylene. Better results were obtained with neutron detectors containing the compound in its crystalline form, such as pressed pellets, or microscopic-scale (7-14 micron) crystals dispersed in various media. The expectation drown from these studies was that further improvement of pulse height, PSD, and efficiency characteristics could be reached with larger and more transparent LiSal crystals, growth of which has not been reported so far. In this paper, we present the first results on growth and characterization of relatively large, a cm-scale size, single crystals of LiSal with good optical quality. The crystals were grown both from aqueous and anhydrous (methanol) media, mainly for neutron detection studies. However, the results on growth and structural characterization may be interesting for other fields where LiSal, together with other alkali metal salicylates, is used for biological, medical, and chemical (as catalyst) applications.

Zaitseva, N; Newby, J; Hull, G; Saw, C; Carman, L; Cherepy, N; Payne, S

2009-02-13T23:59:59.000Z

375

Characterization of Epitaxial Film Silicon Solar Cells Grown on Seeded Display Glass: Preprint  

SciTech Connect

We report characterizations of epitaxial film crystal silicon (c-Si) solar cells with open-circuit voltages (Voc) above 560 mV. The 2-um absorber cells are grown by low-temperature (<750 degrees C) hot-wire CVD (HWCVD) on Corning EAGLE XG display glass coated with a layer-transferred (LT) Si seed. The high Voc is a result of low-defect epitaxial Si (epi-Si) growth and effective hydrogen passivation of defects. The quality of HWCVD epitaxial growth on seeded glass substrates depends on the crystallographic quality of the seed and the morphology of the epitaxial growth surface. Heterojunction devices consist of glass/c-Si LT seed/ epi n+ Si:P/epi n- Si:P/intrinsic a-Si:H/p+ a-Si:H/ITO. Similar devices grown on electronically 'dead' n+ wafers have given Voc {approx}630 mV and {approx}8% efficiency with no light trapping features. Here we study the effects of the seed surface polish on epi-Si quality, how hydrogenation influences the device character, and the dominant junction transport physics.

Young, D. L.; Grover, S.; Teplin, C.; Stradins, P.; LaSalvia, V.; Chuang, T. K.; Couillard, J. G.; Branz, H. M.

2012-06-01T23:59:59.000Z

376

Liquid Scintillator Purification  

SciTech Connect

The KamLAND collaboration has studied background requirements and purification methods needed to observe the 7Be neutrino from the sun. First we will discuss the present background situation in KamLAND where it is found that the main background components are 210Pb and 85Kr. It is then described how to purify the liquid scintillator. The present status and results on how to remove 210Pb from the liquid scintillator are discussed. Specifically, the detailed analysis of the effects of distillation and adsorption techniques are presented.

Kishimoto, Y. [Research Center for Neutrino Science, Tohoku University (Japan)

2005-09-08T23:59:59.000Z

377

Method for simultaneous measurement of mass loading and fluid property changes using a quartz crystal microbalance  

DOE Patents (OSTI)

A method is described, using a quartz crystal microbalance, to obtain simultaneous measurement of solid mass accumulation and changes in liquid density-viscosity product. The simultaneous real-time measurements of electrical parameters yields that changes in surface mass can be differentiated from changes in solution properties. Two methods to obtain the admittance/frequency data are employed.

Granstaff, V.E.; Martin, S.J.

1993-04-13T23:59:59.000Z

378

Frostbite Theater - Liquid Nitrogen Experiments - Liquid Nitrogen in a  

NLE Websites -- All DOE Office Websites (Extended Search)

Freeze Liquid Nitrogen! Freeze Liquid Nitrogen! Previous Video (Let's Freeze Liquid Nitrogen!) Frostbite Theater Main Index Next Video (Freeze the Rainbow!) Freeze the Rainbow! Liquid Nitrogen in a Microwave! What happens when the world's most beloved cryogenic liquid meets one of the most common household appliances? Find out when we try to microwave liquid nitrogen! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: A little while ago we received an email from Star of the Sea Catholic School in Virginia Beach, Virginia, asking what happens when you place liquid nitrogen in a microwave. Well, I just happen to have some liquid nitrogen! Steve: And I just happen to have a microwave!

379

Lyophilic liquid porosimetry and a new liquid autoporosimeter  

SciTech Connect

Lyophilic liquid porosimetry determines the volumes of different size pores by measuring the amount of liquid in these pores, thus, providing pore volume distribution (PVD) data for porous structures. Any liquid that wets the sample may be used. This opens unique opportunities for porous structure evaluation. It provides realistic PVD analysis when the liquid of interest changes the porous structure. It determines uptake/drainage hysteresis of real liquids. It allows direct measurements of uptake and retention capillary pressures with different amounts of liquid in a sample. Lyophilic liquid porosimetry determines liquid/solid contact angles of different size pores within the sample. It can also be used for PVD analysis of both soft, brittle materials and porous metal materials.

Tyomkin, I. [TRI/Princeton, NJ (United States)

1998-12-31T23:59:59.000Z

380

Lasing Yb3+ in crystals with a wavelength dependence anisotropy displayed from La2CaB10O19  

Science Journals Connector (OSTI)

Concerning the applications, they are numerous: material processing, medical, laser nuclear fusion, military projects, etc.

A. Brenier; Y. Wu; J. Zhang; Y. Wu

2012-04-01T23:59:59.000Z

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


381

Method and apparatus for providing simultaneous displays in panoramic radiography  

SciTech Connect

Two different areas of a focal trough of a dental arch structure are simultaneously displayed on a radiograph when tubehead-camera assembly of an x-ray machine panoramically scans the dental arch structure. The different areas of the focal trough are obtained when a pair of parallel disposed film holding devices within the camera are caused to travel in proximate relationship to each other at different speeds. The x-rays activate and pass through one film before activating the other immediately therebehind.

Cushman, R.H.

1980-03-18T23:59:59.000Z

382

L&E: Refrigerated Display Case | The Better Buildings Alliance  

NLE Websites -- All DOE Office Websites (Extended Search)

Lighting & Electrical » Adopt the Lighting & Electrical » Adopt the refrigerated display case lighting performance specification and start saving on your case lighting costs Activities Technology Solutions Teams Lighting & Electrical Space Conditioning Plug & Process Loads Food Service Refrigeration Laboratories Energy Management & Information Systems Public Sector Teams Market Solutions Teams Adopt the refrigerated display case lighting performance specification and start saving on your case lighting costs The LED Refrigerated Display Case Lighting Specification delivers nearly 50% energy savings compared to typical display case lighting. If all retail refrigerated display cases switched today to LED systems, over 2.1 TWh of electricity could be saved annually. LED Refrigerated Display Case Lighting Specification

383

Viscosity of Liquids  

Science Journals Connector (OSTI)

6 November 1952 research-article Viscosity of Liquids E. N. da C. Andrade The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. www.jstor.org

1952-01-01T23:59:59.000Z

384

The Viscosity of Liquids  

Science Journals Connector (OSTI)

... of momentum between them. In the case of a gas, Maxwell showed how the viscosity can be derived by considering this momentum as being communicated by molecules transferring themselves bodily ... fulfilment of the conditions postulated in Maxwell's treatment, and the fact that while gas viscosity goes up with temperature liquid ...

E. N. DA C. ANDRADE

1930-04-12T23:59:59.000Z

385

Detonation in Liquid Explosives  

Science Journals Connector (OSTI)

... Laboratory, on the initiative of Dr. A. H. Davis, into the process of detonation in explosives, the programme including a photographic study of the ... in explosives, the programme including a photographic study of the detonation Waves in transparent liquid explosives—the sensitivity of some of which can be varied by ...

D. CRONEY

1948-09-25T23:59:59.000Z

386

Liquid Natural Gas  

Science Journals Connector (OSTI)

Liquid Natural Gas ... IN A new technique for storing natural gas at the East Ohio Gas Co. plant, Cleveland, Ohio, the gas is liquefied before passing to the gas holders. ... Natural gas contains moisture and carbon dioxide, both of which liquefy before the natural gas and are somewhat of a nuisance because upon solidification they clog the pipes. ...

W. F. SCHAPHORST

1941-04-25T23:59:59.000Z

387

Air Liquide- Biogas & Fuel Cells  

Energy.gov (U.S. Department of Energy (DOE))

Presentation about Air Liquide's biogas technologies and integration with fuel cells. Presented by Charlie Anderson, Air Liquide, at the NREL/DOE Biogas and Fuel Cells Workshop held June 11-13, 2012, in Golden, Colorado.

388

Questions and Answers - If you jumped into a pool of liquid oxygen, would  

NLE Websites -- All DOE Office Websites (Extended Search)

Is there anything colderthan liquid nitrogen? Is there anything colder<br>than liquid nitrogen? Previous Question (Is there anything colder than liquid nitrogen?) Questions and Answers Main Index Next Question (What's the melting point of steel?) What's the melting point of steel? If you jumped into a pool of liquid oxygen, would your body instantly crystallize? Nothing happens instantly. The first thing would be frostbite to the skin followed by the onset of hypothermia to the internal organs. No doubt everything would "freeze up" with time. What this really brings up though is safety issues with cryogenic fluids, that is, those substances that are normally gases (like oxygen, nitrogen, carbon dioxide, hydrogen, or helium) at room temperature but can be changed to liquid form through the use of

389

Electrical resistivity and thermal conductivity of liquid Fe alloys at high P and T, and  

E-Print Network (OSTI)

Electrical resistivity and thermal conductivity of liquid Fe alloys at high P and T, and heat flux to crystallize (1, 4). Existing estimates of thermal conductivity (kel) and electrical resistivity (el) of Earth of electrical resistivity to temperature, its invariability along and across the Fe liquidus, and adherence

Steinle-Neumann, Gerd

390

Magnetic Affinity Immunoassay Based Enzyme-labeled Phage Displayed Antibody  

Science Journals Connector (OSTI)

Abstract A novel magnetic affinity immunoassay (MAIA) strategy on the basis of enzyme-labeled phage displayed antibody was developed. The assay consisted of a sandwich format in which immobilized polyclonal antibody (pcAb) on magnetic microparticle was used as capture probe, and enzyme-labeled phage displayed antibody as specific detection probe to increase enzyme amount and enhance detection signal. By the proposed method, ?-bungarotoxin (?-BGT) was successfully detected. A linear relationship between absorbance value and the concentration of ?-BGT in the range of 0.016–62.5 ?g L?1 was obtained. The linear regression equation was Y = 0.641X + 1.355 (R = 0.9925, n = 13, p < 0.0001) with a detection limit of 0.016 ?g L?1. In comparison with the traditional ELISA, this method provided a 10-fold better sensitivity in ?-BGT detection. Also this method provided a 4-fold better sensitivity comparing with the MAIA based on enzyme labeled monoclonal antibody (mcAb). Due to the low detection limit, high accuracy and specificity, this method holds great promise in toxin trace detection.

Xi-Hui MU; Zhao-Yang TONG; Qi-Bin HUANG; Bing LIU; Zhi-Wei LIU; Lan-Qun HAO; Jin-Ping ZHANG

2014-01-01T23:59:59.000Z

391

Liquid metal thermal electric converter  

DOE Patents (OSTI)

A liquid metal thermal electric converter which converts heat energy to electrical energy. The design of the liquid metal thermal electric converter incorporates a unique configuration which directs the metal fluid pressure to the outside of the tube which results in the structural loads in the tube to be compressive. A liquid metal thermal electric converter refluxing boiler with series connection of tubes and a multiple cell liquid metal thermal electric converter are also provided.

Abbin, Joseph P. (Albuquerque, NM); Andraka, Charles E. (Albuquerque, NM); Lukens, Laurance L. (Albuquerque, NM); Moreno, James B. (Albuquerque, NM)

1989-01-01T23:59:59.000Z

392

32 - Fundamentals of Industrial Crystallization  

Science Journals Connector (OSTI)

Abstract Industrial crystallization processes aim at the large-scale production of crystalline products through the formation of involving a suspension of growing particles in a solution. The product quality is defined by the kind of crystalline phase produced, the crystal size distribution, the crystal morphology, and the product purity. These product quality aspects are determined by the subprocesses of crystallization of which crystal nucleation and growth are usually of main importance. The driving force for these subprocesses is usually established either by evaporating solvent to increase the concentration or cooling the solution to decrease the solubility. The recent pharmaceutical research interest in continuous crystallization processes is fortified by claims of improved product quality, efficient use of materials and energy resources, and waste stream reductions.

Joop H. ter Horst; Christiane Schmidt; Joachim Ulrich

2015-01-01T23:59:59.000Z

393

High temperature liquid level sensor  

DOE Patents (OSTI)

A length of metal sheathed metal oxide cable is perforated to permit liquid access to the insulation about a pair of conductors spaced close to one another. Changes in resistance across the conductors will be a function of liquid level, since the wetted insulation will have greater electrical conductivity than that of the dry insulation above the liquid elevation.

Tokarz, Richard D. (West Richland, WA)

1983-01-01T23:59:59.000Z

394

Florida Nuclear Profile - Crystal River  

U.S. Energy Information Administration (EIA) Indexed Site

Crystal River1" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration date"...

395

Aperiodic crystals and superspace concepts  

Science Journals Connector (OSTI)

Aperiodic crystals may conveniently be described in a higher dimensional `superspace'. An overview of the method and applications to various families is given.

Janssen, T.

2014-07-31T23:59:59.000Z

396

Invisible defects in complex crystals  

E-Print Network (OSTI)

We show that invisible localized defects, i.e. defects that can not be detected by an outside observer, can be realized in a crystal with an engineered imaginary potential at the defect site. The invisible defects are synthesized by means of supersymmetric (Darboux) transformations of an ordinary crystal using band-edge wave functions to construct the superpotential. The complex crystal has an entire real-valued energy spectrum and Bragg scattering is not influenced by the defects. An example of complex crystal synthesis is presented for the Mathieu potential.

S. Longhi; G. Della Valle

2013-06-04T23:59:59.000Z

397

Ion Distributions Near a Liquid-Liquid Interface  

NLE Websites -- All DOE Office Websites (Extended Search)

Ion Distributions Near a Liquid-Liquid Interface Ion Distributions Near a Liquid-Liquid Interface Researchers from the University of Illinois at Chicago; Northern Illinois University; the University of California, Santa Cruz; and ChemMatCARS (sector 15 at the APS) used x-ray reflectivity from ion distributions at the liquid-liquid interface to provide strong evidence that the interfacial structure of a liquid alters the ion distributions near a charged interface, contrary to earlier theories about ions at charged surfaces. Coulomb's Law describes the interaction between two, otherwise isolated, point charges. If many charges are present in the region between these two charges, the net interaction between them is modified. This is commonly found in real systems, such as a plasma gas of electrons and ionized

398

Frostbite Theater - Liquid Nitrogen Experiments - Liquid Nitrogen and  

NLE Websites -- All DOE Office Websites (Extended Search)

Freeze the Rainbow! Freeze the Rainbow! Previous Video (Freeze the Rainbow!) Frostbite Theater Main Index Next Video (Liquid Nitrogen and Fire!) Liquid Nitrogen and Fire! Liquid Nitrogen and Antifreeze! What happens when the freezing power of liquid nitrogen meets the antifreezing power of ethylene glycol? [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: What happens when the freezing power of liquid nitrogen... Steve: ...meets the antifreezing power of ethylene glycol! Joanna: While a mix of 70 percent ethylene glycol and 30 percent water doesn't freeze until 60 degrees below zero, it's still no match for liquid nitrogen. At 321 degrees below zero, liquid nitrogen easily freezes

399

Frostbite Theater - Liquid Nitrogen Experiments - Let's Freeze Liquid  

NLE Websites -- All DOE Office Websites (Extended Search)

Shattering Pennies! Shattering Pennies! Previous Video (Shattering Pennies!) Frostbite Theater Main Index Next Video (Liquid Nitrogen in a Microwave!) Liquid Nitrogen in a Microwave! Let's Freeze Liquid Nitrogen! By removing the hottest molecules, we're able to freeze liquid nitrogen! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: Today, we're going to freeze liquid nitrogen! Joanna and Steve: Yeah! Joanna: The obvious way to do this is to put the liquid nitrogen into something colder. Something that we have lots of around here! Something like... liquid helium! Steve: Yes! Joanna: Yeah, but we're not going to do that. Instead, we're going to freeze the nitrogen by removing the hottest molecules!

400

Programmable window : a large-scale transparent electronic display using SPD film  

E-Print Network (OSTI)

This research demonstrates that Suspended Particle Device (SPD) film is a viable option for the development of large-scale transparent display systems. The thesis analyzes the SPD film from an architectural display application ...

Ramos, Martin (Ramos Rizo-Patron)

2004-01-01T23:59:59.000Z

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


401

BY SILICON CRYSTALS  

NLE Websites -- All DOE Office Websites (Extended Search)

c October 29, 1942 a 1 1 _MIGH aECTgFXCATIOH - BY SILICON CRYSTALS . . c .. I n. The excellent pesformmce of Brftieh "red dot" c r y s t a l s f e explained R R due t o the kgife edge contact i n a t A polfehod ~ X ' f l i C B o H i g h frequency m c t l f f c n t f o n 8ependre c r i t i c a l l y on the ape%e;y of the rectifytnc boundary layer o f the crystal, C, For hl#$ comvere~on e f f i c i e n c y , the product c d t h i ~ capacity m a o f ' t h e @forward" (bulk) re-. sistance Rb o f the crystnl must b@ sm%P, depende primarily on the breadth of tha b f f e edge i t s lbngth. The contact am &harefore ~ E L V Q a rather large area wMQh prevents burn-out, thh3 t h e breadth of &h@ knife edge should be bdt8~1 than E~$O$B% % f I - ' amo For a knife edge, this produet very 14ttle upom For a wavsIL~n+3tih of PO emo the eowp,o%a%8sne 4

402

Determinants of Hospital's Financial Liquidity  

Science Journals Connector (OSTI)

Abstract The purpose of the articles is to identify key factors that may affect the level of hospital's liquidity ratio. We’ve posed four research hypotheses, assuming that, the level of financial liquidity in hospitals depends on several factors (number of beds, annual income per bed, profitability ratios, debt ratio). We’ve found that: 1) there is a positive relationship between debt ratio and liquidity and profitability ratio and liquidity 2) the relationship between the size of the hospital and the financial liquidity is not statistically significant. In the study we’ve use statistical tools: Pearson's correlation coefficient, T-Student's test with Cohran-Cox's correction.

Agnieszka Bem; Katarzyna Pr?dkiewicz; Pawe? Pr?dkiewicz; Paulina Ucieklak-Je?

2014-01-01T23:59:59.000Z

403

Essential role of catalyst in vapor-liquid-solid growth of compounds  

Science Journals Connector (OSTI)

The mechanism of the solidification of compound materials, such as oxide crystals, in a vapor-liquid-solid (VLS) system is investigated by model molecular dynamics simulation. A simple model for the VLS growth of a compound crystal is proposed to clarify the general mechanism of how a liquid solvent catalyzes the growth rate. We find that the nucleation process at the solid surface is responsible for limiting the growth rate, and that the solvent catalyzes the nucleation by reducing the critical nucleation size at the liquid-solid interface. Our theoretical suggestion that the ratio of the vapor-solid (VS) growth rate to the VLS growth rate strongly depends on the supply rate qualitatively agrees well with the experimental result. Finally, we simulate the entire process of VLS nanowire formation.

Masaru Suzuki; Yoshiki Hidaka; Takeshi Yanagida; Annop Klamchuen; Masaki Kanai; Tomoji Kawai; Shoichi Kai

2011-06-28T23:59:59.000Z

404

HIPerPaper: Introducing Pen and Paper Interfaces for Ultra-Scale Wall Displays  

E-Print Network (OSTI)

.8 by 7.5 foot tiled wall display of 268,720,000 pixels. HIPerPaper provides a flexible, portable cost of displays and growing power of graph- ics processing units (GPUs) are enabling visualization (HIPerSpace1 ) is a 31.8 foot wide by 7.5 foot tall wall dis- play. Seventy tiled 30" Dell LCD displays

Wang, Deli

405

Pinch-drag-flick vs. spatial input: rethinking zoom & pan on mobile displays  

Science Journals Connector (OSTI)

The multi-touch-based pinch to zoom, drag and flick to pan metaphor has gained wide popularity on mobile displays, where it is the paradigm of choice for navigating 2D documents. But is finger-based navigation really the gold standard' In this paper, ... Keywords: mobile displays, multi-touch input, spatial input, spatially aware displays, user study

Martin Spindler; Martin Schuessler; Marcel Martsch; Raimund Dachselt

2014-04-01T23:59:59.000Z

406

Quantal Ising Liquid  

Science Journals Connector (OSTI)

An example is presented of a model of an amorphous quantum mechanical system, a liquid of quantal Ising spins, which can be solved exactly within certain many-body theories. Analytical solutions of the model in mean-field theory are shown to reveal a decrease in the extent of the ferromagnetic region (compared to an equivalent classical system) and the occurrence of some degree of quantum localization. Both phenomena are analyzed as a competition between quantum mechanics and the condensed phase.

Richard M. Stratt

1984-10-01T23:59:59.000Z

407

RHIC The Perfect Liquid  

ScienceCinema (OSTI)

Evidence to date suggests that gold-gold collisions the Relativistic Heavy Ion Collider at Brookhaven are indeed creating a new state of hot, dense matter, but one quite different and even more remarkable than had been predicted. Instead of behaving like a gas of free quarks and gluons, as was expected, the matter created in RHIC's heavy ion collisions appears to be more like a "perfect" liquid.

BNL

2009-09-01T23:59:59.000Z

408

Theory of fermion liquids  

Science Journals Connector (OSTI)

We develop a general theory of fermion liquids in spatial dimensions greater than 1. The principal method, bosonization, is applied to the cases of short- and long-range longitudinal interactions and to transverse gauge interactions. All the correlation funtions of the system may be obtained with the use of a generating functional. Short-range and Coulomb interactions do not destroy the Landau-Fermi fixed point. Non-Fermi liquid fixed points are found, however, in the cases of a super-long-range longitudinal interaction in two dimensions and transverse gauge interactions in two and three spatial dimensions. We consider in some detail the (2+1)-dimensional problem of a Chern-Simons gauge action combined with a longitudinal two-body interaction V(q)??q?y-1, which controls the density, and hence gauge, fluctuations. For y0 the interaction is relevant and the fixed point cannot be accessed by bosonization. Of special importance is the case y=0 (Coulomb interaction), which describes the Halperin-Lee-Read theory of the half-filled Landau level. We obtain the full quasiparticle propagator, which is of a marginal Fermi-liquid form. Using Ward identities, we show that neither the inclusion of nonlinear terms in the fermion dispersion nor vertex corrections alters our results: the fixed point is accessible by bosonization. As the two-point fermion Green’s function is not gauge invariant, we also invetigate the gauge-invariant density response function. Near momentum Q=2kF, in addition to the Kohn anomaly we find other nonanalytic behavior. In the appendies we present a numerical calculation of the spectral function for a Fermi liquid with Landau parameter f0?0. We also show how Kohn’s theorem is satisfied within the bosonization framework.

H.-J. Kwon; A. Houghton; J. B. Marston

1995-09-15T23:59:59.000Z

409

Development and evaluation of a function-oriented display system  

SciTech Connect

Although no clear design philosophy for screen-based HSIs exist, Screen-based Human System Interfaces (HSI) are gradually replacing the conventional panel-based HSIs. The current paper presents a comprehensive design philosophy where a function-analysis of the plant forms the backbone of the information requirements, information presentation and display organization. The main characteristics of the concept are described as well as the development process behind the first prototype. Findings from the first usability test of the prototype are reported and potential benefits of the HSI are discussed. Ideas and problem areas for a future improved prototype are also described in the paper. The work is part of OECD Halden Reactor Project's ongoing research on innovative design for advanced NPP control-rooms and is conducted in close co-operation with Electricite de France. (authors)

Andresen, G.; Broberg, H.; Kvalem, J. [IFE, OECD HRP (Norway)

2006-07-01T23:59:59.000Z

410

What constitutes a simple liquid?  

E-Print Network (OSTI)

Simple liquids are traditionally defined as many-body systems of classical particles interacting via radially symmetric pair potentials. We suggest that a simple liquid should be defined instead by the property of having strong correlation between virial and potential energy equilibrium fluctuations in the NVT ensemble. There is considerable overlap between the two definitions, but also some notable differences. For instance, in the new definition simplicity is not a property of the intermolecular potential only because a liquid is usually only strongly correlating in part of its phase diagram. Moreover, according to the new definition not all simple liquids are atomic (i.e., with radially symmetric pair potentials) and not all atomic liquids are simple. The main part of the paper motivates the new definition of liquid simplicity by presenting evidence that a liquid is strongly correlating if and only if its intermolecular interactions may be ignored beyond the first coordination shell (FCS). This is demonstrated by NVT simulations of structure and dynamics of 15 atomic and molecular model liquids with a shifted-forces cutoff placed at the first minimum of the radial distribution function. No proof is given that the chemical characterization follows from the strong correlation property, but it is shown to be consistent with the existence of isomorphs in strongly correlating liquids' phase diagram. Finally, we note that the FCS characterization of simple liquids calls into question the basis for standard perturbation theory, according to which the repulsive and attractive forces play fundamentally different roles for the physics of liquids.

Trond S. Ingebrigtsen; Thomas B. Schrøder; Jeppe C. Dyre

2011-11-15T23:59:59.000Z

411

Liquid fossil fuel technology  

SciTech Connect

Progress reports are presented under the following headings: (1) extraction (technology assessment, oil research, gas research); (2) liquid processing (characterization, thermodynamics, processing technology); (3) utilization (energy conservation); and (4) project integration and technology transfer. BETC publications are also listed. Some of the highlights for this period are: the Bartlesville Energy Technology Center was converted into NIPER, the National Institute for Petroleum and Energy Research on October 1, 1983; modelling of enthalpies, heat capacities and volumes of aqueous surfactant solutions began using a mass action model; a series of experiments were run on upgrading by hydrogenation SRC-II coal liquid at different degrees of severity and the products have been analyzed; heavy crude oil extracts were separated into fraction with high performance liquid chromatography by Lawrence Berkeley Laboratory and the mass spectra and electron spin resonance were determin ed; and particulates from exhaust gases of diesel engines using fire fuel types are being collected and will be analyzed by chemical methods and results will be compared with those obtained by biological assay. (ATT)

Not Available

1983-01-01T23:59:59.000Z

412

Hanford high-level waste evaporator/crystallizer corrosion evaluation  

SciTech Connect

The US Department of Energy, Hanford Site nuclear reservation, located in Southeastern Washington State, is currently home to 61 Mgal of radioactive waste stored in 177 large underground storage tanks. As an intermediate waste volume reduction, the 242-A Evaporator/Crystallizer processes waste solutions from most of the operating laboratories and plants on the Hanford Site. The waste solutions are concentrated in the Evaporator/Crystallizer to a slurry of liquid and crystallized salts. This concentrated slurry is returned to Hanford Site waste tanks at a significantly reduced volume. The Washington State Department of Ecology Dangerous Waste Regulations, WAC 173-393 require that a tank system integrity assessment be completed and maintained on file at the facility for all dangerous waste tank systems. This corrosion evaluation was performed in support of the 242-A Evaporator/Crystallizer Tank System Integrity Assessment Report. This corrosion evaluation provided a comprehensive compatibility study of the component materials and corrosive environments. Materials used for the Evaporator components and piping include austenitic stainless steels (SS) (primarily ASTM A240, Type 304L) and low alloy carbon steels (CS) (primarily ASTM A53 and A106) with polymeric or asbestos gaskets at flanged connections. Building structure and secondary containment is made from ACI 301-72 Structural Concrete for Buildings and coated with a chemically resistant acrylic coating system.

Ohl, P.C.; Carlos, W.C.

1993-10-01T23:59:59.000Z

413

Ultraslow growth rates of giant gypsum crystals  

Science Journals Connector (OSTI)

...gypsum crystals of Naica ore mines in Chihuahua, Mexico, a challenging subject in mineral...gypsum crystals of Naica ore mines in Chihuahua, Mexico, a challenging subject...gypsum crystals of Naica ore mines in Chihuahua, Mexico, a challenging subject...

A. E. S. Van Driessche; J. M. García-Ruíz; K. Tsukamoto; L. D. Patiño-Lopez; H. Satoh

2011-01-01T23:59:59.000Z

414

Abstract Red is a common colour signal in both aposematic warning displays, and in fruit displays. One common feature is that red is conspicuous against the natural  

E-Print Network (OSTI)

Abstract Red is a common colour signal in both aposematic warning displays, and in fruit displays. One common feature is that red is conspicuous against the natural background of the prey and fruits. However, there is a potential conflict between fruits and aposematic prey in how a bird predator should

Tullberg, Birgitta

415

Frostbite Theater - Liquid Nitrogen Experiments - Let's Pour Liquid  

NLE Websites -- All DOE Office Websites (Extended Search)

Shattering Flowers! Shattering Flowers! Previous Video (Shattering Flowers!) Frostbite Theater Main Index Next Video (Giant Koosh Ball!) Giant Koosh Ball! Let's Pour Liquid Nitrogen on the Floor! Liquid nitrogen?! On the floor?! Who's going to clean that mess up?! See what really happens when one of the world's most beloved cryogenic liquids comes into contact with a room temperature floor. [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: From time to time, we spill a little liquid nitrogen! The reaction we sometimes get is.... Shannon: Did they just pour LIQUID NITROGEN on the FLOOR?!?! Joanna: Yes. Yes we did. Steve: One thing people seem to have a problem with is the mess that liquid

416

Laser Crystallization of Phase Change Material  

NLE Websites -- All DOE Office Websites (Extended Search)

Geoffrey Campbell is the Principal Investigator for Laser Crystallization of Phase Change Material LLNL BES Programs Highlight Laser Crystallization of Phase Change Material False...

417

Seagate Crystal Reports - RADCM  

Office of Environmental Management (EM)

Cs/Sr Capsules Cs/Sr Capsules WASTE STREAM CODE: 02115 STREAM NAME:Cs/Sr Capsules MPC NAME:Salt Waste TOTAL CURIES: Approved Volume : Future Volume Avg: Future Volume Lower Limit: Future Volume Upper Limit: 100.000 Cs/Sr Capsules Isotopes Barium-137m Avg Concentration: 2.5941E+007 Ci/m3 Low Limit Concent: Upper Limit Concent: Cesium-137 Avg Concentration: 2.7391E+007 Ci/m3 Low Limit Concent: Upper Limit Concent: Yttrium-90 Avg Concentration: 1.1840E+007 Ci/m3 Low Limit Concent: Upper Limit Concent: Strontium-90 Avg Concentration: 1.1840E+007 Ci/m3 Low Limit Concent: Upper Limit Concent: % of Stream Hanford - High Level Waste - HLW to Treatment WASTE STREAM CODE: 03857 STREAM NAME:HLW to Treatment MPC NAME:Aqueous Liquids/Slurries TOTAL CURIES: Approved Volume : Future Volume Avg: Future Volume Lower Limit:

418

Radiation Chemistry of Ionic Liquids  

NLE Websites -- All DOE Office Websites (Extended Search)

Liquids Liquids James F. Wishart, Alison M. Funston, and Tomasz Szreder in "Molten Salts XIV" Mantz, R. A., et al., Eds.; The Electrochemical Society, Pennington, NJ, (2006) pp. 802-813. [Information about the volume (look just above this link)] Abstract: Ionic liquids have potentially important applications in nuclear fuel and waste processing, energy production, improving the efficiency and safety of industrial chemical processes, and pollution prevention. Successful use of ionic liquids in radiation-filled environments will require an understanding of ionic liquid radiation chemistry. For example, characterizing the primary steps of ionic liquid radiolysis will reveal radiolytic degradation pathways and suggest ways to prevent them or mitigate their effects on the properties of the material

419

PHOTOCATALYTIC AND PHOTOELECTROCHEMICAL HYDROGEN PRODUCTION ON STRONTIUM TITANATE SINGLE CRYSTALS  

E-Print Network (OSTI)

HYDROGEN PRODUCTION ON STRONTIUM TITANATE SINGLE CRYSTALS F.HYDROGEN PRODUCTION ON STRONTIUM TITANATE SINGLE CRYSTALS

Wagner, F.T.

2012-01-01T23:59:59.000Z

420

Process for preparing liquid wastes  

DOE Patents (OSTI)

A process for preparing radioactive and other hazardous liquid wastes for treatment by the method of vitrification or melting is provided for.

Oden, Laurance L. (Albany, OR); Turner, Paul C. (Albany, OR); O'Connor, William K. (Lebanon, OR); Hansen, Jeffrey S. (Corvallis, OR)

1997-01-01T23:59:59.000Z

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


421

FLARE, Fermilab Liquid Argon Experiments  

E-Print Network (OSTI)

Mature technology of Liquid Argon Time Projection Chambers in conjunction with intense neutrino beams constructed at Fermilab offer a broad program of neutrino physics for the next decade.

L. Bartoszek

2004-08-24T23:59:59.000Z

422

X-Ray Crystallography What do you need? A crystal. But not just any crystal a well ordered crystal  

E-Print Network (OSTI)

X-Ray Crystallography What do you need? A crystal. But not just any crystal­ a well ordered crystal that will diffract x-rays strongly. A crystal handedness. This reduces number to 6- 12. #12;#12;Generally X-ray beam

Cavanagh, John

423

Frostbite Theater - Liquid Nitrogen Experiments - Liquid Nitrogen and Fire!  

NLE Websites -- All DOE Office Websites (Extended Search)

Antifreeze! Antifreeze! Previous Video (Liquid Nitrogen and Antifreeze!) Frostbite Theater Main Index Next Video (Liquid Nitrogen and the Tea Kettle Mystery!) Liquid Nitrogen and the Tea Kettle Mystery! Liquid Nitrogen and Fire! A burning candle is placed in a container of liquid nitrogen! Filmed in front of a live studio audience. Well, they were live when we started... [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Steve: Now, then. I'm a little bit afraid to ask this next question because I think I already know the answer, but is anyone in here feeling a little... dangerous? You're willing to take a chance? Because I am willing to do an experiment they haven't let me do since 'The Incident.' Now, because of the danger, I cannot have a volunteer. I must do this on my

424

Frostbite Theater - Liquid Nitrogen Experiments - Cells vs. Liquid  

NLE Websites -- All DOE Office Websites (Extended Search)

Superconductors! Superconductors! Previous Video (Superconductors!) Frostbite Theater Main Index Next Video (Liquid Oxygen and Fire!) Liquid Oxygen and Fire! Cells vs. Liquid Nitrogen! Let's say you've carelessly dunked your hand into a vat of liquid nitrogen and let it freeze solid. Every movie you've seen where this happens tells you that your hand will shatter like fine china should you bump it into something. If you're extremely careful, will your hand be okay once it thaws out? We'll explore this issue, using flower and onion cells rather than our hands! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: By now, we all know what happens when you place a flower in liquid

425

Power Supply Fundamentals  

Science Journals Connector (OSTI)

Liquid Crystal Displays require dedicated power supply circuits to support their specific requirements. Many different display technologies coexist in the market and compete for their market share. While the p...

Oliver Nachbaur

2012-01-01T23:59:59.000Z

426

Numerical simulations of the forward problem and compressive digital holographic reconstruction of weak scatterers on a planar substrate  

E-Print Network (OSTI)

TFT (Thin-film transistor) - LCD (Liquid-crystal display) is now widely used by the display industry for the reason that LCD is compact and light with very low power consumption; moreover, it has little or no flicker and ...

A., Disi

2014-01-01T23:59:59.000Z

427

Heat transport through ion crystals  

E-Print Network (OSTI)

We study the thermodynamical properties of crystals of trapped ions which are laser cooled to two different temperatures in two separate regions. We show that these properties strongly depend on the structure of the ion crystal. Such structure can be changed by varying the trap parameters and undergoes a series of phase transitions from linear to zig-zag or helicoidal configurations. Thus, we show that these systems are ideal candidates to observe and control the transition from anomalous to normal heat transport. All structures behave as `heat superconductors', with a thermal conductivity increasing linearly with system size and a vanishing thermal gradient inside the system. However, zig-zag and helicoidal crystals turn out to be hyper sensitive to disorder having a linear temperature profile and a length independent conductivity. Interestingly, disordered 2D ion crystals are heat insulators. Sensitivity to disorder is much smaller in the 1D case.

Nahuel Freitas; Esteban Martinez; Juan Pablo Paz

2013-12-23T23:59:59.000Z

428

Crystal-Like geometric modeling  

E-Print Network (OSTI)

faces, symmetry, and fractal geometry. The techniques have also been implemented in software, as a proof of concept. They are used in an interactive geometric modeling system, in which users can use these techniques to create crystal-like shapes...

Landreneau, Eric Benjamin

2006-08-16T23:59:59.000Z

429

Crystal Growth of Oxide and Sulphide  

Science Journals Connector (OSTI)

......film. The hexagonal shaped crystal was often formed on a needle crystals. One of the electron diffraction...the diffraction patterns of bent crystals, the unit cell of this crystal...was often observed that the spherical particles like dew drops......

Hatsujiro HASHIMOTO

1960-01-01T23:59:59.000Z

430

Graphene-based polaritonic crystal  

Science Journals Connector (OSTI)

It is shown that monolayer graphene deposited on a spatially periodic gate behaves as a polaritonic crystal. Its band structure depending on the applied gate voltage is studied. The scattering of electromagnetic radiation from such a crystal is presented calculated and its spectral dependence is analyzed in terms of Fano-type resonances between the reflected continuum and plasmon-polariton modes forming narrow bands.

Yu. V. Bludov; N. M. R. Peres; M. I. Vasilevskiy

2012-06-05T23:59:59.000Z

431

Breaking Through the Glass Ceiling: Recent Experimental Approaches to Probe the Properties of Supercooled Liquids near the Glass Transition.  

SciTech Connect

Experimental measurements of the properties supercooled liquids at temperatures near their respective glass transition temperatures, Tg, are requisite for understanding the behavior of glasses and amorphous solids. Unfortunately, many supercooled molecular liquids rapidly crystallize at temperatures far above their Tg making such measurements difficult to nearly impossible. In this perspective we discuss some recent alternative approaches to obtain experimental data in the temperature regime near Tg. These new approaches may yield the additional experimental data necessary to test current theoretical models of the dynamical slowdown that occurs in supercooled liquids approaching the glass transition.

Smith, R. Scott; Kay, Bruce D.

2012-03-15T23:59:59.000Z

432

Neutron diffraction by perfect crystals  

Science Journals Connector (OSTI)

The dynamical theory of neutron diffraction has been formulated to include the reflected waves from the boundaries of a crystal. This formulation allows a unified treatment of the neutron optical and diffraction phenomena in crystals. It is shown that the neutron propagation in the crystal is determined by two structure factors characterizing the lattice: the total structure factor and the structure factor of the neutron-spin-neutron-orbit interaction. Diffraction by a parallel crystal plate has been studied in considerable detail. It has been found that for a definite neutron-spin orientation, the diffracted and transmitted beams are modulated by six terms periodic in the thickness of the crystal. The period of the dominant term, in this Pendellösung fringe structure, has been calculated in several cases of experimental importance. If the glancing angle of incidence substantially exceeds the critical angle for total reflection, the results are identical with those obtained by a simple extension, to the neutron case, of the x-ray dynamical theory. The diffraction by a magnetized crystal has been examined in some detail and it is shown that measurement of the Pendellösung periods for the two neutron-spin orientations may be used to determine both the nuclear and magnetic neutron scattering amplitude.

C. Stassis and J. A. Oberteuffer

1974-12-15T23:59:59.000Z

433

Proceedings of the K-IDS Three-Dimensional Display Workshop 2006 (21 August 2006) The Compatibility of Consumer Displays with  

E-Print Network (OSTI)

Rourke, Ka Lun Yuen Centre for Marine Science & Technology, Curtin University of Technology, GPO Box U an alternating sequence of left and right perspective images on the display whilst the user is wearing a pair

434

Enhanced liquid hydrocarbon recovery process  

SciTech Connect

This patent describes a process for recovering liquid hydrocarbons. It comprises: injecting into a fractured subterranean formation a polymer enhanced foam comprising a polymer selected from a synthetic polymer or a biopolymer, a surfactant, an aqueous solvent and a gas, recovering liquid hydrocarbons from the formation.

Sydansk, R.D.

1992-07-14T23:59:59.000Z

435

Laboratory solvent reuse -- Liquid chromatography  

SciTech Connect

The objective of this work was to develop a method for reduction of waste solvent in the Process Engineering Chemistry Laboratory. The liquid chromatographs are the largest generators of explosive-contaminated waste in the laboratory. We developed a successful process for the reuse of solvents from the liquid chromatographs and demonstrated the utility of the process in the assay of hexanitrostilbene.

Quinlin, W.T.; Schaffer, C.L.

1992-11-01T23:59:59.000Z

436

Orifice mixing of immiscible liquids  

E-Print Network (OSTI)

measured with an Ostwald Viscosimeter relative to tap water also, All of these physical measurements were made at 83c F, the average tempera- ture noted during the runs. The liquid upon which these measurements were made were samples of the liquids...

McDonough, Joseph Aloysius

1960-01-01T23:59:59.000Z

437

Liquid-permeable electrode  

DOE Patents (OSTI)

Electrodes for use in an electrolytic cell, which are liquid-permeable and have low electrical resistance and high internal surface area are provided of a rigid, porous, carbonaceous matrix having activated carbon uniformly embedded throughout. The activated carbon may be catalyzed with platinum for improved electron transfer between electrode and electrolyte. Activated carbon is mixed with a powdered thermosetting phenolic resin and compacted to the desired shape in a heated mold to melt the resin and form the green electrode. The compact is then heated to a pyrolyzing temperature to carbonize and volatilize the resin, forming a rigid, porous structure. The permeable structure and high internal surface area are useful in electrolytic cells where it is necessary to continuously remove the products of the electrochemical reaction.

Folser, George R. (Lower Burrell, PA)

1980-01-01T23:59:59.000Z

438

Magnetically focused liquid drop radiator  

DOE Patents (OSTI)

A magnetically focused liquid drop radiator for application in rejecting energy from a spacecraft, characterized by a magnetizable liquid or slurry disposed in operative relationship within the liquid droplet generator and its fluid delivery system, in combination with magnetic means disposed in operative relationship around a liquid droplet collector of the LDR. The magnetic means are effective to focus streams of droplets directed from the generator toward the collector, thereby to assure that essentially all of the droplets are directed into the collector, even though some of the streams may be misdirected as they leave the generator. The magnetic focusing means is also effective to suppress splashing of liquid when the droplets impinge on the collector.

Botts, T.E.; Powell, J.R.; Lenard, R.

1984-12-10T23:59:59.000Z

439

Freezing of a Liquid Marble  

E-Print Network (OSTI)

In this study, we present for the first time the observations of a freezing liquid marble. In the experiment, liquid marbles are gently placed on the cold side of a Thermo-Electric Cooler (TEC) and the morphological changes are recorded and characterized thereafter. These liquid marbles are noticed to undergo a shape transition from a spherical to a flying-saucer shaped morphology. The freezing dynamics of liquid marbles is observed to be very different from that of a freezing water droplet on a superhydrophobic surface. For example, the pointy tip appearing on a frozen water drop could not be observed for a frozen liquid marble. In the end, we highlight a possible explanation for the observed morphology.

Ali Hashmi; Adam Strauss; Jie Xu

2012-07-03T23:59:59.000Z

440

Final Report of Project Nanometer Structures for Fuel Cells and Displays, etc.  

E-Print Network (OSTI)

Nanometer Structures for Fuel Cells and Displays, etc. Qingtechnologies (solar and fuel cells, lithium batteries). Intechnologies (solar and fuel cells, lithium batteries), and

Ji, Qing

2012-01-01T23:59:59.000Z

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


441

E-Print Network 3.0 - antibody phage display Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

Collection: Physics ; Biology and Medicine 3 Phage Display Technologies Nicole Stricker, Johns Hopkins University, Baltimore, Maryland, USA Summary: of antibody binding or...

442

Visualizing Audio in a First-Person Shooter With Directional Sound Display  

E-Print Network (OSTI)

Visualizing Audio in a First-Person Shooter With Directional Sound Display Alexandra Holloway representation of audio information for deaf and hearing impaired individuals. Specifically, it determines

California at Santa Cruz, University of

443

Freezing processes. Hydrate processes. Liquid-liquid extraction  

Science Journals Connector (OSTI)

The ice which separates from brine is almost pure. A salt concentration builds up at the interface of the brine and the ice. In freezing processes, as applied in desalting, many small ice crystals are formed w...

Anthony A. Delyannis; Eurydike A. Delyannis

1974-01-01T23:59:59.000Z

444

Heterogeneous nucleation of/on nanoparticles: a density functional study using the phase-field crystal model  

E-Print Network (OSTI)

Crystallization of supersaturated liquids usually starts by heterogeneous nucleation. Mounting evidence shows that even homogeneous nucleation in simple liquids takes place in two steps; first a dense amorphous precursor forms, and the crystalline phase appears via heterogeneous nucleation in/on the precursor cluster. Herein, we review recent results by a simple dynamical density functional theory, the phase-field crystal model, for (precursor-mediated) homogeneous and heterogeneous nucleation of nanocrystals. It will be shown that the mismatch between the lattice constants of the nucleating crystal and the substrate plays a decisive role in determining the contact angle and nucleation barrier, which were found to be non-monotonic functions of the lattice mismatch. Time dependent studies are essential as investigations based on equilibrium properties often cannot identify the preferred nucleation pathways. Modeling of these phenomena is essential for designing materials on the basis of controlled nucleation and/or nano-patterning.

László Gránásy; Frigyes Podmaniczky; Gyula I. Tóth; György Tegze; Tamás Pusztai

2014-07-14T23:59:59.000Z

445

Influence of cross-sectional geometry on the sensitivity and hysteresis of liquid-phase electronic pressure sensors  

E-Print Network (OSTI)

pressure sensors Yong-Lae Park, Daniel Tepayotl-Ramirez, Robert J. Wood, and Carmel Majidi Citation: Appl Institute of Physics. Related Articles Distant mechanical sensors based on cholesteric liquid crystals Appl microstructures Appl. Phys. Lett. 101, 191103 (2012) Silicon nanowire based Pirani sensor for vacuum measurements

Park, Yong-Lae

446

Method of measuring a liquid pool volume  

DOE Patents (OSTI)

A method of measuring a molten metal liquid pool volume and in particular molten titanium liquid pools, including the steps of (a) generating an ultrasonic wave at the surface of the molten metal liquid pool, (b) shining a light on the surface of a molten metal liquid pool, (c) detecting a change in the frequency of light, (d) detecting an ultrasonic wave echo at the surface of the molten metal liquid pool, and (e) computing the volume of the molten metal liquid.

Garcia, Gabe V. (Las Cruces, NM); Carlson, Nancy M. (Idaho Falls, ID); Donaldson, Alan D. (Idaho Falls, ID)

1991-01-01T23:59:59.000Z

447

Lattice Boltzmann simulations of liquid crystalline fluids: active gels and blue phases  

E-Print Network (OSTI)

Lattice Boltzmann simulations have become a method of choice to solve the hydrodynamic equations of motion of a number of complex fluids. Here we review some recent applications of lattice Boltzmann to study the hydrodynamics of liquid crystalline materials. In particular, we focus on the study of (a) the exotic blue phases of cholesteric liquid crystals, and (b) active gels - a model system for actin plus myosin solutions or bacterial suspensions. In both cases lattice Boltzmann studies have proved useful to provide new insights into these complex materials.

M. E. Cates; O. Henrich; D. Marenduzzo; K. Stratford

2010-09-06T23:59:59.000Z

448

New type of thermoelectric conversion of energy by semiconducting liquid anisotropic media  

E-Print Network (OSTI)

The paper describes preliminary investigations of a new effect in conducting anisotropic liquids, which leads to thermoelectric conversion of energy. Nematic liquid crystals with semiconducting dopes are used. A thermoelectric figure of merit ZT = 0.2 is obtained in experiments. The effect can be explained by assuming that the thermocurrent in semiconducting nematics, in contrast to the Seebeck effect, is a nonlinear function of the temperature gradient and of the temperature itself. Though the discovered effect has to be further investigated, the data obtained suggest that it can be effectively used in alternative energy engineering.

Sergey I. Trashkeev; Alexey N. Kudryavtsev

2012-11-02T23:59:59.000Z

449

Liquid Hydrogen Delivery - Strategic Directions for Hydrogen...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Liquid Hydrogen Delivery - Strategic Directions for Hydrogen Delivery Workshop Liquid Hydrogen Delivery - Strategic Directions for Hydrogen Delivery Workshop Targets, barriers and...

450

Toward photonic-crystal metamaterials: Creating magnetic emitters in photonic crystals  

E-Print Network (OSTI)

Toward photonic-crystal metamaterials: Creating magnetic emitters in photonic crystals M. L Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge explore the possibility of designing photonic crystals to act as magnetic metamaterials: structures

451

Retrieval of Cloud Phase and Ice Crystal Habit from Satellite Data  

SciTech Connect

Knowledge of cloud phase (liquid or ice) and crystal habit are of fundamental importance to both remote sensing and climate simulations. Using water droplets instead of ice crystals in retrieving cloud properties from satellite data can lead to errors in the retrieval of cloud height, optical thickness, and microphysical properties. Satellite retrievals of microphysical properties are also influenced by the crystal habit used in the retrieval, either indirectly via an assumed phase function or directly via assumed profiles of ice crystal habits. Realistic treatment of ice cloud radiative and microphysical properties, which depend on crystal habit, is important in climate simulations, especially in tropical anvil regions. In this work, we present a method for retrieving cloud phase and the dominant ice crystal habit from radiances measured by the Multi-angle Imaging Spectro-Radiometer (MISR) and the Moderate Resolution Imaging Spectroradiometer (MODIS). The shape of an atmospheric particle affects the scattering of light such that water droplets and ice crystals of various habits have somewhat different phase functions. Consequently the radiances measured by the MISR instrument, which observes light scattered from the same cloud at nine different viewing angles, are functions of the crystal shape. In principle, the measured angular radiance pattern can be used to infer the crystal shape. In this work, we present initial results from a cloud phase and ice crystal habit retrieval based on combining the MISR multi-angular visible wavelength measurements with MODIS shortwave infrared measurements. The nine angular measurements provided by the MISR cameras allow a wide range of scattering angles to be viewed in a single scene, which provides sensitivity to particle habit. The presence of the MODIS instrument on the same satellite allows additional information on particle size to be incorporated into the retrievals. Results of the retrieval method are presented for several case studies over the continental United States. Cloud phase can be determined from the MISR angular measurements alone, due to the large differences in the phase functions of water droplets and ice crystals. By combining the MISR and MODIS measurements, crystal habit, effective radius, and optical depth can be inferred simultaneously for ice clouds. Comparisons with ground-based retrieval methods and semi-coincident in situ data illustrate that the retrieved crystal habits and sizes are reasonable.

McFarlane, Sally A.; Marchand, Roger T.; Ackerman, Thomas P.

2004-07-19T23:59:59.000Z

452

Frostbite Theater - Liquid Nitrogen Experiments - Instant Liquid Nitrogen  

NLE Websites -- All DOE Office Websites (Extended Search)

Freezing Balloons! Freezing Balloons! Previous Video (Freezing Balloons!) Frostbite Theater Main Index Next Video (Shattering Flowers!) Shattering Flowers! Instant Liquid Nitrogen Balloon Party! Need a bunch of balloons blown-up quickly? Liquid nitrogen to the rescue! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: We've been making videos for a while now and we've learned that people like balloons and liquid nitrogen! Steve: So... Here you go! Balloon: Crackling... Balloon: Pop! Joanna: Ooh! Balloon: Pop! Balloon: Pop! Steve: If you'd like to know the science of what's going on behind this, please one of our first videos, "Liquid Nitrogen Experiments: The Balloon."

453

Haze Formation and Behavior in Liquid-Liquid Extraction Processes  

SciTech Connect

Aqueous haze formation and behavior was studied in the liquid-liquid system tri-n-butyl phosphate in odorless kerosene and 3M nitric acid with uranyl nitrate and cesium nitrate representing the major solute and an impurity, respectively. A pulsed column, mixer-settler and centrifugal contactor were chosen to investigate the effect of different turbulence characteristics on the manifestation of haze since these contactors exhibit distinct mixing phenomena. The dispersive processes of drop coalescence and breakage, and water precipitation in the organic phase were observed to lead to the formation of haze drops of {approx}1 um in diameter. The interaction between the haze and primary drops of the dispersion was critical to the separation efficiency of the liquid-liquid extraction equipment. Conditions of high power input and spatially homogeneous mixing enabled the haze drops to become rapidly assimilated within the dispersion to maximize the scrub performance and separation efficiency of the equipment.

Arm, Stuart T.; Jenkins, J. A.

2006-07-31T23:59:59.000Z

454

Laser Pointer System Intuitive Interaction for Large High-Res Displays  

E-Print Network (OSTI)

Laser Pointer System Intuitive Interaction for Large High-Res Displays LEDs Accelerometer Vibration Buttons Laser & LEDs Unlike conventional input devices like mouse and keyboard, laser pointers do that are displayed on large high-resolution screens. The laser pointer technology was developed in cooperation

Reiterer, Harald

455

Interactive opinion polls on public displays: studying privacy requirements in the wild  

Science Journals Connector (OSTI)

Interactive opinion polls are a promising novel use case for public urban displays. However, voicing one's opinion at such a public installation poses special privacy requirements. In this paper, we introduce our ongoing work on investigating the roles ... Keywords: mobile interaction, privacy, public display, public poll

Matthias Baldauf, Stefan Suette, Peter Fröhlich, Ulrich Lehner

2014-09-01T23:59:59.000Z

456

Two Dimensional Radiation Pressure Tactile Display Takayuki Iwamoto, Yoshimichi Ikeda, and Hiroyuki Shinoda  

E-Print Network (OSTI)

Two Dimensional Radiation Pressure Tactile Display Takayuki Iwamoto, Yoshimichi Ikeda, and Hiroyuki Shinoda The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan {iwa, ikeda, shino, radiation pressure 1. Introduction One of the difficulties in designing tactile displays is to find

Shinoda, Hiroyuki

457

Exploring user preferences for indoor navigation support through a combination of mobile and fixed displays  

Science Journals Connector (OSTI)

In this paper we explore, through a formative study, user preferences for indoor navigation support using a combination of mobile and fixed displays along with a range of navigation content such as digital 2D maps, 3D route visualizations (presented ... Keywords: 3D visualization, digital displays, digital maps, graphical directional signage, indoor navigation, mobile phones

Faisal Taher; Keith Cheverst

2011-08-01T23:59:59.000Z

458

Autopoiesic Content: A Conceptual Model for Enabling Situated Self-generative Content for Public Displays  

E-Print Network (OSTI)

that are not part of themselves ­ such as a car factory. #12;A set of carefully crafted matching templates would- able) "ambient displays", e.g., colored orbs2 showing stock trends, water fountains3 indicating information. A more power- ful concept (b) is the idea of connecting different display systems based

Krause, Rolf

459

DISPLAY OF FRICTION IN VIRTUAL ENVIRONMENTS BASED ON HUMAN FINGER PAD CHARACTERISTICS  

E-Print Network (OSTI)

DISPLAY OF FRICTION IN VIRTUAL ENVIRONMENTS BASED ON HUMAN FINGER PAD CHARACTERISTICS A. Nahvi, J City, UT 84112 ABSTRACT A friction display system is proposed for virtual environ- ments. Since a user the frictional properties of the human finger pad on 9 subjects by simultaneously recording force and movement

Hollerbach, John M.

460

Eye Contact Communication System between Mobile Robots Using Invisible Code Display  

E-Print Network (OSTI)

Eye Contact Communication System between Mobile Robots Using Invisible Code Display Takeru Furukawa. To solve this problem, this paper describes an information transmission system using an invisible code on displays which show an expression of robot's eyes. Keywords: 2D code, polarized invisible code, polarized

Paris-Sud XI, Université de

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


461

Lunch line: using public displays and mobile devices to encourage healthy eating in an organization  

Science Journals Connector (OSTI)

In this paper, we explore using large digital displays in combination with a personal mobile application to publicly and privately encourage people to make healthy choices. We designed, built, and deployed an experimental system called Lunch Line that ... Keywords: health challenges, healthy eating, mobile devices, persuasive technology, public displays

Kerry Shih-Ping Chang, Catalina M. Danis, Robert G. Farrell

2014-09-01T23:59:59.000Z

462

Design, implementation and evaluation of a novel public display for pedestrian navigation: the rotating compass  

Science Journals Connector (OSTI)

Important drawbacks of map-based navigation applications for mobile phones are their small screen size and that users have to associate the information provided by the mobile phone with the real word. Therefore, we designed, implemented and evaluated ... Keywords: mobile navigation, public displays, synchronized displays

Enrico Rukzio; Michael Müller; Robert Hardy

2009-04-01T23:59:59.000Z

463

Liquid-crystalline phases formed by DNA duplexes containing pyrophosphate groups  

SciTech Connect

We have studied the interaction between synthetic DNA molecules containing pyrophosphate (PP) groups in various positions, which makes it possible to control the charge distribution along the DNA chain. The PP groups were either symmetrically arranged at the ends or at the center of DNA molecules or uniformly distributed along these molecules. It is shown that, similar to nonmodified DNA, the synthetic PP-modified DNA molecules can form cholesteric liquid crystals. Minima of the pair interaction potential are found, conditions of the symmetry of this potential are formulated, and the dependence of conformation angles on the effective charge is determined. The results of calculations show that the system exhibits polymorphism (i.e., several phases of cholesteric liquid crystals can exist in DNA solutions)

Volkov, Yu. S., E-mail: yu.volkov@gmail.com; Golo, V. L. [Moscow State University (Russian Federation); Kats, E. I. [Russian Academy of Sciences Chernogolovka, Landau Institute for Theoretical Physics (Russian Federation); Kuznetsova, S. A. [Institut Laue-Langevin (France)

2009-03-15T23:59:59.000Z

464

Crystal Systems | Open Energy Information  

Open Energy Info (EERE)

Crystal Systems Crystal Systems Name Crystal Systems Address 27 Congress Street Place Salem, Massachusetts Zip 01970 Sector Solar Product Silicon producer Year founded 1971 Website http://www.crystalsystems.com/ Coordinates 42.5190384°, -70.8896271° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.5190384,"lon":-70.8896271,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

465

Calibrating Curved Crystals Used for Plasma Spectroscopy  

SciTech Connect

The throughput and resolving power of an X-ray spectrometer that uses a curved crystal as the diffraction element is determined primarily by the crystal X-ray reflectivity properties. This poster presents a measurement technique for these crystal parameters using a simple diode source to produce a narrow spectral band. The results from measurements on concave elliptical polyethylene terephthalate (PET) crystals and convex potassium acid phthalate (KAP) crystals show large variations in the key parameters compared to those from the flat crystal.

Haugh, M. J., Jacoby, K. D., Ross, P. W., Rochau, G. Wu, M., Regan, S. P., Barrios, M. A.

2012-10-29T23:59:59.000Z

466

Precision Crystal Calorimeters in High Energy Physics  

ScienceCinema (OSTI)

Precision crystal calorimeters traditionally play an important role in high energy physics experiments. In the last two decades, it faces a challenge to maintain its precision in a hostile radiation environment. This paper reviews the performance of crystal calorimeters constructed for high energy physics experiments and the progress achieved in understanding crystal?s radiation damage as well as in developing high quality scintillating crystals for particle physics. Potential applications of new generation scintillating crystals of high density and high light yield, such as LSO and LYSO, in particle physics experiments is also discussed.

Ren-Yuan Zhu

2010-01-08T23:59:59.000Z

467

Estimating the lunar mantle water budget from phosphates: Complications associated with silicate-liquid-immiscibility  

Science Journals Connector (OSTI)

Abstract The discovery of water within the lunar mantle has broad implications for the formation of the Earth–Moon system, differentiation of the Moon, and the magmatic evolution of lunar basalts, as well as the highland rocks. Recently, there has been considerable interest in using combined water abundances and H-isotope systematics of lunar apatites from mare basalts to quantify the origin and extent of water within the Moon’s mantle. However, the petrologic and geochemical conditions that govern apatite crystallization are not well-constrained, especially for high-FeO basaltic melts that crystallize at fO2 values below the iron–wüstite buffer. Apatites are typically located within the late-stage interstitial regions. In this contribution, we present detailed textural descriptions of late-stage inter-cumulus, residual-liquid pockets (i.e., mesostasis pockets), in order to understand the petrogenesis of lunar apatite. Results from five mare basalts demonstrate that the majority of the residual liquids in mesostasis regions have undergone silicate-liquid immiscibility (SLI) splitting into Si–K-rich (felsic) and Fe-rich (Fe-basaltic) conjugate liquids. We demonstrate the complexity of these residual liquids by documenting a wide range of water contents for apatites in several mesostasis pockets within a single mare basalt, a complexity common to many basalts. These data illustrate that individual apatite-hosting mesostasis pockets behave as independent sub-systems, even within a single rock. Furthermore, we present water concentrations for another phosphate phase, merrillite, indicating additional uncertainties during considerations of water partitioning into apatite. Fractional crystallization trends have been used in order to assess the conditions under which magmas are likely to undergo SLI. Predicted liquid lines of descent indicate that it is the late-stage residual liquids of lunar basalts with relatively low-Mg# (e.g., ?50) may not intersect the two-liquid field depending upon the fractionation trends in the late-stage mesostasis pockets. For samples that undergo SLI, the apatite/melt-partition coefficients required for back-calculating water abundances of the parental melts are compromised by the generation of two populations of apatites-merrillites from conjugate immiscible liquids. This process highlights an important complexity inherent to all water back-calculations that use apatite, as this requires an additional set of partition coefficients. We emphasize that the complex petrologic nature and common development of SLI of apatite-bearing, late-stage mesostasis pockets have not been considered in published apatite-volatile data. These factors, in additional to other considerations, illustrate why water back-calculations to model the primary melts from such data must be viewed with caution.

J.F. Pernet-Fisher; G.H. Howarth; Y. Liu; Y. Chen; L.A. Taylor

2014-01-01T23:59:59.000Z

468

Molecular Simulation of Henry's Constant at Vapor-Liquid and Liquid-Liquid Phase Richard J. Sadus  

E-Print Network (OSTI)

coexistence. 1. Introduction Henry's constant is a well-known measure of a solute's solubility in a particularMolecular Simulation of Henry's Constant at Vapor-Liquid and Liquid-Liquid Phase Boundaries Richard to determine Henry's constant from the residual chemical potential at infinite dilution at the vapor-liquid

469

The Viscosity of Liquid Helium  

Science Journals Connector (OSTI)

2 September 1935 research-article The Viscosity of Liquid Helium J. O. Wilhelm A. D. Misener A. R. Clark The Royal Society is collaborating with JSTOR to digitize, preserve...

1935-01-01T23:59:59.000Z

470

Liquid Oxygen and its Uses  

Science Journals Connector (OSTI)

... of the liquid. At present, however, there is no known method of rendering them flameless, and their use in the majority of coal-mines is therefore inadmissible. If this ...

HENRY BRIGGS

1924-02-02T23:59:59.000Z

471

Gaseous and Liquid Hydrogen Storage  

Energy.gov (U.S. Department of Energy (DOE))

Today's state of the art for hydrogen storage includes 5,000- and 10,000-psi compressed gas tanks and cryogenic liquid hydrogen tanks for on-board hydrogen storage.

472

Liquid helium cryo TEM | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

cryo TEM Liquid helium cryo TEM The JEOL JEM-3000SFF was designed for high-resolution cryogenic transmission electron microscopy (cryo-EM) of biological samples and expands EMSL...

473

Essays on liquidity and information  

E-Print Network (OSTI)

This dissertation studies the interaction of liquidity and incomplete or asymmetric information. In Chapter 1, I study a dynamic economy with illiquidity due to adverse selection in financial markets. Investment is undertaken ...

Kurlat, Pablo (Pablo Daniel)

2010-01-01T23:59:59.000Z

474

Ionic-Liquid Induced Changes in Cellulose Structure Associated with Enhanced Biomass Hydrolysis  

SciTech Connect

The effects of varying ionic liquid pretreatment parameters on various sources of lignocellulosic biomass have been studied using X-ray powder diffraction, X-ray fiber diffraction, and compositional analysis. Comparative enzymatic hydrolysis and sugar analysis were used to relate the observed changes in cellulose structure to biomass digestibility. In this study, the factor most clearly associated with enhanced biomass hydrolysis is the conversion of cellulose fibers from the cellulose I to the cellulose II crystal phase.

Samayam, Indira P.; Hanson, B. Leif; Langan, Paul; Schall, Constance A. (Toledo)

2011-11-07T23:59:59.000Z

475

PHASE CHANGE LIQUIDS  

SciTech Connect

Work is being performed to develop a new shipping system for frozen environmental samples (or other materials) that uses an optimal phase change liquid (PCL) formulation and an insulated shipping container with an on-board digital temperature data logger to provide a history of the temperature profile within the container during shipment. In previous work, several PCL formulations with temperatures of fusion ranging from approximately -14 to -20 C were prepared and evaluated. Both temperature of fusion and heat of fusion of the formulations were measured, and an optimal PCL formulation was selected. The PCL was frozen in plastic bags and tested for its temperature profile in a cooler using a digital temperature data logger. This testing showed that the PCL formulation can maintain freezer temperatures (< -7 to -20 C) for an extended period, such as the time for shipping samples by overnight courier. The results of the experiments described in this report provide significant information for use in developing an integrated freezer system that uses a PCL formulation to maintain freezer temperatures in coolers for shipping environmental samples to the laboratory. Experimental results show the importance of the type of cooler used in the system and that use of an insulating material within the cooler improves the performance of the freezer system. A new optimal PCL formulation for use in the system has been determined. The new formulation has been shown to maintain temperatures at < -7 to -20 C for 47 hours in an insulated cooler system containing soil samples. These results are very promising for developing the new technology.

Susan S. Sorini; John F. Schabron

2006-03-01T23:59:59.000Z

476

Extremely Correlated Fermi Liquids B. Sriram Shastry  

E-Print Network (OSTI)

Extremely Correlated Fermi Liquids B. Sriram Shastry Physics Department, University of California the theory of an extremely correlated Fermi liquid with U ! 1. This liquid has an underlying auxiliary Fermi liquid Green's function that is further caparisoned by extreme correlations. The theory leads to two

California at Santa Cruz, University of

477

Electrowetting on liquid-infused film (EWOLF): Complete reversibility and controlled droplet oscillation suppression for fast optical imaging  

E-Print Network (OSTI)

Electrowetting on dielectric (EWOD) has emerged as a powerful tool to electrically manipulate tiny individual droplets in a controlled manner. Despite tremendous progress over the past two decades, current EWOD operating in ambient conditions has limited functionalities posing challenges for its applications, including electronic display, energy generation, and microfluidic systems. Here, we demonstrate a new paradigm of electrowetting on liquid-infused film (EWOLF) that allows for complete reversibility and tunable transient response simultaneously. We determine that these functionalities in EWOLF are attributed to its novel configuration, which allows for the formation of viscous liquid-liquid interfaces as well as additional wetting ridges, thereby suppressing the contact line pinning and severe droplet oscillation encountered in the conventional EWOD. Finally, by harnessing these functionalities demonstrated in EWOLF, we also explore its application as liquid lens for fast optical focusing.

Hao, Chonglei; Chen, Xuemei; He, Yuncheng; Li, Qiusheng; Li, K Y; Wang, Zuankai

2014-01-01T23:59:59.000Z

478

ARM - Field Campaign - CRYSTAL-FACE  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsCRYSTAL-FACE govCampaignsCRYSTAL-FACE Campaign Links CRYSTAL-FACE Website Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : CRYSTAL-FACE 2002.06.26 - 2002.08.01 Lead Scientist : James Mather Data Availability Data is available to the general public at the ARM Archive. Questions regarding CRYSTAL-FACE or the PARSL data set may be directed to Jim Mather at the Pacific Northwest National Laboratory (Jim.Mather@pnl.gov) or visit the CRYSTAL-FACE web site at http://cloud1.arc.nasa.gov/crystalface/ For data sets, see below. Description From July 3-29, 2002 ARM took part in CRYSTAL-FACE (The Cirrus Regional Study of Tropical Anvils and Cirrus Layers -Florida Area Cirrus Experiment). CRYSTAL-FACE was organized by NASA but many agencies and

479

IR laser-induced protein crystal transformation  

Science Journals Connector (OSTI)

A novel method and the associated instrumentation for improving crystalline order (higher resolution of X-ray diffraction and reduced mosaicity) of protein crystals by precisely controlled heating is demonstrated. Crystal transformation is optically controlled by a video system.

Kiefersauer, R.

2014-04-26T23:59:59.000Z

480

Photon tunnelling microscopy of polyethylene single crystals  

E-Print Network (OSTI)

Photon tunnelling microscopy of polyethylene single crystals Mohan Srinivasarao* and Richard S:photon tunnellingmicroscopy;single crystals; polyethylene) INTRODUCTION The study of morphology of polymers is an area

Srinivasarao, Mohan

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


481

Fluid Inclusions in Hydrothermally Synthesized Brucite Crystals  

Science Journals Connector (OSTI)

Brucite crystals were grown hydrothermally from Mg(OH)2 powder in 7.5 and 15 mol% NaOH solutions. It is established from the observation of the surface microtopographs that the crystals grew by the spiral mechani...

Kazuo Nakamura; Shin-Ichi Hirano…

1989-01-01T23:59:59.000Z

482

Crystallization of the crenarchaeal SRP core  

Science Journals Connector (OSTI)

The conserved ribonucleoprotein core of the signal recognition particle (SRP) has been crystallized. Both crystal forms are highly twinned and an explanation for the possible tetartohedral twinning is presented.

Rosendal, K.R.

2003-12-18T23:59:59.000Z

483

Commercialization of Coal-to-Liquids Technology  

SciTech Connect

The report provides an overview of the current status of coal-to-liquids (CTL) commercialization efforts, including an analysis of efforts to develop and implement large-scale, commercial coal-to-liquids projects to create transportation fuels. Topics covered include: an overview of the history of coal usage and the current market for coal; a detailed description of what coal-to-liquids technology is; the history of coal-to-liquids development and commercial application; an analysis of the key business factors that are driving the increased interest in coal-to-liquids; an analysis of the issues and challenges that are hindering the commercialization of coal-to-liquids technology; a review of available coal-to-liquids technology; a discussion of the economic drivers of coal-to-liquids project success; profiles of key coal-to-liquids developers; and profiles of key coal-to-liquids projects under development.

NONE

2007-08-15T23:59:59.000Z

484

Crystal structure of guggulsterone Z  

SciTech Connect

The crystal structure of the title compound (4,17(20)-trans-pregnadiene-3,16-dione, C{sub 21}H{sub 28}O{sub 2}) has been determined by direct methods using single-crystal X-ray diffraction data. The compound crystallizes into the orthorhombic space group P2{sub 1}2{sub 1}2{sub 1} with the unit cell parameters a = 7.908(2) A, b = 13.611(3) A, c = 16.309(4) A, and Z = 4. The structure has been refined to R = 0.058 for 3667 observed reflections. The bond distances and angles are in good agreement with guggulsterone E and other related steroid molecules. Ring A exists in the distorted sofa conformation, while rings B and C adopt the distorted chair conformation. Five-membered ring D is intermediate between the half-chair and envelope conformations. The A/B ring junction is quasi-trans, while ring systems B/C and C/D are trans fused about the C(8)-C(9) and C(13)-C(14) bonds, respectively. The steroid nucleus has a small twist, as shown by the C(19)-C(10)...C(13)-C(18) pseudo-torsion angle of 7.2{sup o}. The crystal structure is stabilized by intra-and intermolecular C-H...O hydrogen bonds.

Gupta, V. K., E-mail: vivek_gupta2k2@hotmail.com; Bandhoria, P. [University of Jammu, Post Graduate Department of Physics (India); Gupta, B. D.; Gupta, K. K. [Regional Research Laboratory (India)

2006-03-15T23:59:59.000Z

485

Crystal Engineering: Strategies and Architectures  

Science Journals Connector (OSTI)

This review takes a look at some of the strategies that have been devised for research in crystal engineering, in particular, those based around hydrogen-bonded architectures. In addition, some of the history and possibilites of the field itself are alluded to.

Aakeröy, C.B.

1997-08-01T23:59:59.000Z

486

Photocatalytic activity of glass ceramics containing Nasicon-type crystals  

SciTech Connect

Graphical abstract: Display Omitted Highlights: ? Glass ceramics containing Nasicon-type crystals were prepared. ? The glass ceramics showed photocatalytic activity under UV irradiation. ? Higher activity was observed in the MgTi{sub 4}(PO{sub 4}){sub 6}- and CaTi{sub 4}(PO{sub 4}){sub 6}-containing glass ceramics. -- Abstract: Glass ceramics were prepared by heat-treating MO–TiO{sub 2}–P{sub 2}O{sub 5} (M = Mg, Ca, Sr and Ba) and R{sub 2}O–TiO{sub 2}–P{sub 2}O{sub 5}–SiO{sub 2} (R = Li, Na and K) glasses, and their photocatalytic activity was investigated. The crystalline phases precipitated in the glasses were only Nasicon-type crystals, MTi{sub 4}(PO{sub 4}){sub 6} or RTi{sub 2}(PO{sub 4}){sub 3}. Decomposition experiments of both methylene blue (MB) and acetaldehyde showed that the glass ceramics exhibited effective photocatalytic activity. The activity did not depend on the radius of the M{sup 2+} or R{sup +} ion, and higher activity was observed in the MgTi{sub 4}(PO{sub 4}){sub 6} and CaTi{sub 4}(PO{sub 4}){sub 6} precipitated glass ceramics.

Fu, Jie, E-mail: fu@ohara-inc.co.jp [R and D Department, Ohara Inc., Sagamihara-shi, Kanagawa 252-5286 (Japan)] [R and D Department, Ohara Inc., Sagamihara-shi, Kanagawa 252-5286 (Japan)

2013-01-15T23:59:59.000Z

487

Core-softened Fluids, Water-like Anomalies and the Liquid-Liquid Critical Points  

E-Print Network (OSTI)

. INTRODUCTION Water is characterized by well-known thermodynamic and kinetic liquid-state anomalies; for examplePREPRINT Core-softened Fluids, Water-like Anomalies and the Liquid-Liquid Critical Points Evy simulations are used to examine the relationship between water-like anoma- lies and the liquid-liquid critical

Barbosa, Marcia C. B.

488

Laser Assisted Crystallization of Ferromagnetic Amorphous Ribbons...  

NLE Websites -- All DOE Office Websites (Extended Search)

Ferromagnetic Amorphous Ribbons: A Multimodal Characterization and Thermal Model Study. Laser Assisted Crystallization of Ferromagnetic Amorphous Ribbons: A Multimodal...

489

Ames Lab 101: Growing Crystals in Space  

SciTech Connect

Rohit Trivedi, distinguished professor of materials science and engineering, discusses his research with NASA to grow crystals in space.

Trivedi, Rohit

2011-01-01T23:59:59.000Z

490

Crystal of GTP Cyclohydrolase Type IB  

DOE Patents (OSTI)

This invention relates to a novel, bacterial GTP Cyclohydrolase Type IB enzyme, and the crystal structure thereof.

Swairjo, Manal A.; Iwata-Reuyl, Dirk; de Crecy-Lagard, Valerie

2012-12-11T23:59:59.000Z

491

Robotic CCD microscope for enhanced crystal recognition  

DOE Patents (OSTI)

A robotic CCD microscope and procedures to automate crystal recognition. The robotic CCD microscope and procedures enables more accurate crystal recognition, leading to fewer false negative and fewer false positives, and enable detection of smaller crystals compared to other methods available today.

Segelke, Brent W. (San Ramon, CA); Toppani, Dominique (Livermore, CA)

2007-11-06T23:59:59.000Z

492

Nanoscale Calorimetry of Isolated Polyethylene Single Crystals  

E-Print Network (OSTI)

Nanoscale Calorimetry of Isolated Polyethylene Single Crystals A. T. KWAN, M. YU. EFREMOV, E. A-film differential scanning calorimetry to investigate the melt- ing of isolated polyethylene single crystals of lamellar single crystals of polyethylene (PE). We obtain thickness, diffraction, and calorimetry data

Allen, Leslie H.

493

Transition from Irradiation-Induced Amorphization to Crystallization...  

NLE Websites -- All DOE Office Websites (Extended Search)

from Irradiation-Induced Amorphization to Crystallization in Nanocrystalline Silicon Carbide. Transition from Irradiation-Induced Amorphization to Crystallization in...

494

Final approach guidance using an altimeter-aided Loran-C display system  

E-Print Network (OSTI)

Introduction: The goal of this thesis is to test the flyability of a display system that uses a King Radio KEAO-346 altimeter and Micrologic ML-3000 LORAN-C receiver for final approach guidance and to model the dynamics ...

Dogan, Norry

1986-01-01T23:59:59.000Z

495

In Vivo Bacteriophage Peptide Display to Tailor Pharmacokinetics of Biological Nanoparticles  

Science Journals Connector (OSTI)

Clinical use of most radiolabeled targeting agents has been limited because of the uptake and retention in kidney and/or liver. We hypothesized that bacteriophage (phage) display could be exploited to select f...

Jessica R. Newton-Northup; Marie T. Dickerson…

2014-12-01T23:59:59.000Z

496

Comparison of Pilots'' Situational Awareness While Monitoring Autoland Approaches Using Conventional and Advanced Flight Display Formats  

Science Journals Connector (OSTI)

A simulation experiment was performed to assess situation awareness (SA) and workload of pilots while monitoring simulated autoland operations in Instrument Meteorological Conditions with three advanced display concepts: two enhanced electronic flight ...

Kramer Lynda J.; Busquets Anthony M.

2000-05-01T23:59:59.000Z

497

An optical see-through head mounted display with addressable focal planes  

Science Journals Connector (OSTI)

Most existing stereoscopic head mounted displays (HMDs), presenting a pair of stereoscopic images at a fixed focal distance, lack the ability to correctly render the naturally coupled accommodation and convergence cues. Psychophysical studies have shown ...

Sheng Liu; Dewen Cheng; Hong Hua

2008-09-01T23:59:59.000Z

498

Beyond Parallax Barriers: Applying Formal Optimization Methods to Multi-Layer Automultiscopic Displays  

E-Print Network (OSTI)

with arbitrary opacities on each layer. Second, we consider general multi-layer architectures containing three. The High-Rank 3D (HR3D) display contains a stacked pair of LCD panels; rather than using heuristically

Heidrich, Wolfgang

499

A Study on Users' Preference on Interruption When Using Wearable Computers and Head Mounted Displays  

E-Print Network (OSTI)

Displays Marcus Nilsson1 , Mikael Drugge1 , Urban Liljedahl2 , Kre Synnes1 , Peter Parnes1 Lule°a Technology, 2 Division of Computer Science and Networking SE­971 87 Lule°a, Sweden {marcus.nilsson, mikael

Madiraju, Praveen

500

A Directory of Dedicated Commemorative Groves, Trees and Display Plantings (sorted by common name)  

E-Print Network (OSTI)

) University of Idaho Arboretum Botanical Garden Paul Warnick Common Name Scientific Name Commemorating Ash North America Fraxinus pennsylvanica, americana etc. Idaho Public Utilities Executives' Course Aspen Groves, Trees and Display Plantings (sorted by common name) University of Idaho Arboretum Botanical

Waits, Lisette