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1

Optical waveguide device with an adiabatically-varying width  

DOE Patents (OSTI)

Optical waveguide devices are disclosed which utilize an optical waveguide having a waveguide bend therein with a width that varies adiabatically between a minimum value and a maximum value of the width. One or more connecting members can be attached to the waveguide bend near the maximum value of the width thereof to support the waveguide bend or to supply electrical power to an impurity-doped region located within the waveguide bend near the maximum value of the width. The impurity-doped region can form an electrical heater or a semiconductor junction which can be activated with a voltage to provide a variable optical path length in the optical waveguide. The optical waveguide devices can be used to form a tunable interferometer (e.g. a Mach-Zehnder interferometer) which can be used for optical modulation or switching. The optical waveguide devices can also be used to form an optical delay line.

Watts; Michael R. (Albuquerque, NM), Nielson; Gregory N. (Albuquerque, NM)

2011-05-10T23:59:59.000Z

2

Josephson device with a matched rf source  

SciTech Connect

Analog simulation of a resistance-shunted ac Josephson junction coupled to an rf source with matching impedance reveals (1) added structure in the device's V-I curve even when the source is quiescent and (2) rf-induced steps with peak amplitudes between those produced by voltage and current rf sources. Both results are consistent with experimental data.

Longacre, A. Jr.

1980-03-01T23:59:59.000Z

3

Adiabatic Formation of a Matched-beam Distribution for an Alternating-gradient Quadrupole Lattice  

SciTech Connect

The formation of a quasiequilibrium beam distribution matched to an alternating-gradient quadrupole focusing lattice by means of the adiabatic turn-on of the oscillating focusing field is studied numerically using particle-in-cell simulations. Quiescent beam propagation over several hundred lattice periods is demonstrated for a broad range of beam intensities and vacuum phase advances describing the strength of the oscillating focusing field. Properties of the matched-beam distribution are investigated. In particular, self-similar evolution of the beam density profile is observed over a wide range of system parameters. The numerical simulations are performed using the WARP particle-in-cell code.

Mikhail A. Dorf, Ronald C. Davidson, Edward A. Startsev, and Hong Qin

2010-02-02T23:59:59.000Z

4

MATCH Guide on Product Development Processes in the Medical Device Industry  

E-Print Network (OSTI)

of Technology Centre for Healthcare #12;EXECUTIVE SUMMARY This MATCH guide is aimed at SME medical device in practice and it is likely that many SMEs are operating well away from optimum. The long-term aim of MATCH

Oakley, Jeremy

5

Lattice-matched epitaxial GaInAsSb/GaSb thermophotovoltaic devices  

SciTech Connect

The materials development of Ga{sub 1{minus}x}In{sub x}As{sub y}Sb{sub 1{minus}y} alloys for lattice-matched thermophotovoltaic (TPV) devices is reported. Epilayers with cutoff wavelength 2--2.4 {micro}m at room temperature and lattice-matched to GaSb substrates were grown by both low-pressure organometallic vapor phase epitaxy and molecular beam epitaxy. These layers exhibit high optical and structural quality. For demonstrating lattice-matched thermophotovoltaic devices, p- and n-type doping studies were performed. Several TPV device structures were investigated, with variations in the base/emitter thicknesses and the incorporation of a high bandgap GaSb or AlGaAsSb window layer. Significant improvement in the external quantum efficiency is observed for devices with an AlGaAsSb window layer compared to those without one.

Wang, C.A.; Choi, H.K.; Turner, G.W.; Spears, D.L.; Manfra, M.J. [Massachusetts Inst. of Tech., Lexington, MA (United States). Lincoln Lab.; Charache, G.W. [Lockheed Martin, Inc., Schenectady, NY (United States)

1997-05-01T23:59:59.000Z

6

Printed circuit board impedance matching step for microwave (millimeter wave) devices  

DOE Patents (OSTI)

An impedance matching ground plane step, in conjunction with a quarter wave transformer section, in a printed circuit board provides a broadband microwave matching transition from board connectors or other elements that require thin substrates to thick substrate (>quarter wavelength) broadband microwave (millimeter wave) devices. A method of constructing microwave and other high frequency electrical circuits on a substrate of uniform thickness, where the circuit is formed of a plurality of interconnected elements of different impedances that individually require substrates of different thicknesses, by providing a substrate of uniform thickness that is a composite or multilayered substrate; and forming a pattern of intermediate ground planes or impedance matching steps interconnected by vias located under various parts of the circuit where components of different impedances are located so that each part of the circuit has a ground plane substrate thickness that is optimum while the entire circuit is formed on a substrate of uniform thickness.

Pao, Hsueh-Yuan; Aguirre, Jerardo; Sargis, Paul

2013-10-01T23:59:59.000Z

7

Adiabatic Quantum Transistors  

We describe a many-body quantum system that can be made to quantum compute by the adiabatic application of a large applied field to the system. Prior to the application of the field, quantum information is localized on one boundary of the device, and after the application of the field, this information propagates to the other side of the device, with a quantum circuit applied to the information. The applied circuit depends on the many-body Hamiltonian of the material, and the computation takes place in a degenerate ground space with symmetry-protected topological order. Such “adiabatic quantum transistors” are universal adiabatic quantum computing devices that have the added benefit of being modular. Here, we describe this model, provide arguments for why it is an efficient model of quantum computing, and examine these many-body systems in the presence of a noisy environment.

Bacon, Dave; Flammia, Steven T.; Crosswhite, Gregory M.

2013-06-01T23:59:59.000Z

8

Reconstructing adiabats  

E-Print Network (OSTI)

We give an explicit method for calculating the equations of state of a thermodynamical substance from the following information: in the calibrated case, the system of isotherms and a single adiabat, in the uncalibrated one, the same but with two adiabats. For simple examples the entropy function can be computed explicitly from this material but it involves steps (solution of non-linear equations and an integration) which will usually require numerical methods for their implementation.

James B. Cooper

2011-08-24T23:59:59.000Z

9

Adiabatic capture and debunching  

SciTech Connect

In the study of beam preparation for the g-2 experiment, adiabatic debunching and adiabatic capture are revisited. The voltage programs for these adiabbatic processes are derived and their properties discussed. Comparison is made with some other form of adiabatic capture program. The muon g-2 experiment at Fermilab calls for intense proton bunches for the creation of muons. A booster batch of 84 bunches is injected into the Recycler Ring, where it is debunched and captured into 4 intense bunches with the 2.5-MHz rf. The experiment requires short bunches with total width less than 100 ns. The transport line from the Recycler to the muon-production target has a low momentum aperture of {approx} {+-}22 MeV. Thus each of the 4 intense proton bunches required to have an emittance less than {approx} 3.46 eVs. The incoming booster bunches have total emittance {approx} 8.4 eVs, or each one with an emittance {approx} 0.1 eVs. However, there is always emittance increase when the 84 booster bunches are debunched. There will be even larger emittance increase during adiabatic capture into the buckets of the 2.5-MHz rf. In addition, the incoming booster bunches may have emittances larger than 0.1 eVs. In this article, we will concentrate on the analysis of the adiabatic capture process with the intention of preserving the beam emittance as much as possible. At this moment, beam preparation experiment is being performed at the Main Injector. Since the Main Injector and the Recycler Ring have roughly the same lattice properties, we are referring to adiabatic capture in the Main Injector instead in our discussions.

Ng, K.Y.; /Fermilab

2012-03-01T23:59:59.000Z

10

Adiabatic topological quantum computing  

E-Print Network (OSTI)

Topological quantum computing promises error-resistant quantum computation without active error correction. However, there is a worry that during the process of executing quantum gates by braiding anyons around each other, extra anyonic excitations will be created that will disorder the encoded quantum information. Here we explore this question in detail by studying adiabatic code deformations on Hamiltonians based on topological codes, notably Kitaev's surface codes and the more recently discovered color codes. We develop protocols that enable universal quantum computing by adiabatic evolution in a way that keeps the energy gap of the system constant with respect to the computation size and introduces only simple local Hamiltonian interactions. This allows one to perform holonomic quantum computing with these topological quantum computing systems. The tools we develop allow one to go beyond numerical simulations and understand these processes analytically.

Chris Cesare; Andrew J. Landahl; Dave Bacon; Steven T. Flammia; Alice Neels

2014-06-10T23:59:59.000Z

11

Aluminum tunnel junction detector operation in an adiabatic demagnetization refrigerator  

SciTech Connect

Superconducting tunnel junction detectors are being developed as both particle and X-ray detectors. Aluminum junctions are desirable for detectors because of their strong native oxide barriers, and because the small energy gap of aluminum is a good match to ballistic phonons generated by particle interactions in single crystals of silicon or other low acoustic-loss insulating crystals. Aluminum tunnel junction detectors must be operated near 0.1 T{sub C} which is 110 mK for aluminum. To operate detectors at these temperatures, we have developed adiabatic demagnetization refrigerators (ADRs) for the laboratory and prototype ADRs for space based operation. These cryogenic systems are simpler, more convenient and more portable than most dilution refrigerators. We have demonstrated that the magnetic field of the ADR need not compromise the performance of aluminum tunnel junctions. We have recently initiated a program to develop superconducting tunnel junctions (STJs) as high resolution X-ray detectors and low energy threshold particle detectors. This complements our existing program in which we are developing high resolution X-ray microcalorimeter detectors. One of our goals for both of these cryogenic detector development efforts is to observe X-ray emission from cosmic sources. This requires a refrigeration system that can operate under zero gravity space flight conditions. For the microcalorimeter project, temperatures of 100 mK and below are required to sufficiently reduce the heat capacity of the device. We have therefore developed an adiabatic demagnetization refrigerator (ADR) system which can be configured for space flight.

Labov, S.; Silver, E.; Le Gros, M. (Lawrence Livermore National Lab., CA (United States)); Bland, R.W.; Dickson, S.C.; Dignan, T.G.; Laws, K.; Johnson, R.T.; Simon, M.W.; Stricker, D.A.; Watson, R.M. (San Francisco State Univ., CA (United States)); Madden, N.; Landis, D. (Lawrence Berkeley Lab., CA (United States))

1992-01-30T23:59:59.000Z

12

Breast Patient Setup Error Assessment: Comparison of Electronic Portal Image Devices and Cone-Beam Computed Tomography Matching Results  

SciTech Connect

Purpose: To quantify the differences in setup errors measured with the cone-beam computed tomography (CBCT) and electronic portal image devices (EPID) in breast cancer patients. Methods and Materials: Repeat CBCT scan were acquired for routine offline setup verification in 20 breast cancer patients. During the CBCT imaging fractions, EPID images of the treatment beams were recorded. Registrations of the bony anatomy for CBCT to planning CT and EPID to digitally reconstructed-radiographs (DRRs) were compared. In addition, similar measurements of an anthropomorphic thorax phantom were acquired. Bland-Altman and linear regression analysis were performed for clinical and phantom registrations. Systematic and random setup errors were quantified for CBCT and EPID-driven correction protocols in the EPID coordinate system (U, V), with V parallel to the cranial-caudal axis and U perpendicular to V and the central beam axis. Results: Bland-Altman analysis of clinical EPID and CBCT registrations yielded 4 to 6-mm limits of agreement, indicating that both methods were not compatible. The EPID-based setup errors were smaller than the CBCT-based setup errors. Phantom measurements showed that CBCT accurately measures setup error whereas EPID underestimates setup errors in the cranial-caudal direction. In the clinical measurements, the residual bony anatomy setup errors after offline CBCT-based corrections were {Sigma}{sub U} = 1.4 mm, {Sigma}{sub V} = 1.7 mm, and {sigma}{sub U} = 2.6 mm, {sigma}{sub V} = 3.1 mm. Residual setup errors of EPID driven corrections corrected for underestimation were estimated at {Sigma}{sub U} = 2.2mm, {Sigma}{sub V} = 3.3 mm, and {sigma}{sub U} = 2.9 mm, {sigma}{sub V} = 2.9 mm. Conclusion: EPID registration underestimated the actual bony anatomy setup error in breast cancer patients by 20% to 50%. Using CBCT decreased setup uncertainties significantly.

Topolnjak, Rajko [Department of Radiation Oncology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam (Netherlands); Sonke, Jan-Jakob, E-mail: j.sonke@nki.n [Department of Radiation Oncology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam (Netherlands); Nijkamp, Jasper; Rasch, Coen; Minkema, Danny; Remeijer, Peter; Vliet-Vroegindeweij, Corine van [Department of Radiation Oncology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam (Netherlands)

2010-11-15T23:59:59.000Z

13

Plasma Adiabatic Lapse Rate  

Science Journals Connector (OSTI)

The plasma analog of an adiabatic lapse rate (or temperature variation with height) in atmospheric physics is obtained. A new source of plasma temperature gradient in a binary ion species mixture is found that is proportional to the concentration gradient ??? and difference in average ionization states Z2-Z1. Application to inertial-confinement-fusion implosions indicates a potentially strong effect in plastic (CH) ablators that is not modeled with mainline (single-fluid) simulations. An associated plasma thermodiffusion coefficient is derived, and charge-state diffusion in a single-species plasma is also predicted.

Peter Amendt; Claudio Bellei; Scott Wilks

2012-08-16T23:59:59.000Z

14

Non adiabatic quantum search algorithms  

E-Print Network (OSTI)

We present two new continuous time quantum search algorithms similar to the adiabatic search algorithm, but now without an adiabatic evolution. We find that both algorithms work for a wide range of values of the parameters of the Hamiltonian, and one of them has, as an additional feature that, for values of time larger than a characteristic one, it will converge to a state which can be close to the searched state.

A. Perez; A. Romanelli

2007-06-08T23:59:59.000Z

15

Adiabatic optimization without local minima  

E-Print Network (OSTI)

Several previous works have investigated the circumstances under which quantum adiabatic optimization algorithms can tunnel out of local energy minima that trap simulated annealing or other classical local search algorithms. Here we investigate the even more basic question of whether adiabatic optimization algorithms always succeed in polynomial time for trivial optimization problems in which there are no local energy minima other than the global minimum. Surprisingly, we find a counterexample in which the potential is a single basin on a graph, but the eigenvalue gap is exponentially small as a function of the number of vertices. In this counterexample, the ground state wavefunction consists of two "lobes" separated by a region of exponentially small amplitude. Conversely, we prove if the ground state wavefunction is single-peaked then the eigenvalue gap scales at worst as one over the square of the number of vertices.

Michael Jarret; Stephen P. Jordan

2014-05-29T23:59:59.000Z

16

Born-Oppenheimer Non-Adiabatic Diabatic Appendix ADIABATIC AND DIABATIC REPRESENTATIONS  

E-Print Network (OSTI)

Born-Oppenheimer Non-Adiabatic Diabatic Appendix ADIABATIC AND DIABATIC REPRESENTATIONS Andreas Representations #12;Born-Oppenheimer Non-Adiabatic Diabatic Appendix OUTLINE 1 THE BORN-OPPENHEIMER APPROXIMATION Dressed Kinetic Energy Group Born-Oppenheimer Approximation Singularities at Conical Intersections 3

Markmann, Andreas

17

Adiabatic Quantum Computation and Deutsch's Algorithm  

E-Print Network (OSTI)

We show that by a suitable choice of a time dependent Hamiltonian, Deutsch's algorithm can be implemented by an adiabatic quantum computer. We extend our analysis to the Deutsch-Jozsa problem and estimate the required running time for both global and local adiabatic evolutions.

Saurya Das; Randy Kobes; Gabor Kunstatter

2001-11-06T23:59:59.000Z

18

Quantum search by partial adiabatic evolution  

Science Journals Connector (OSTI)

A quantum search algorithm based on the partial adiabatic evolution [Phys. Rev. A 80, 052328 (2009)] is provided. We calculate its time complexity and find that the algorithm improves the time complexity, which is O(N/M), of the local adiabatic search algorithm [Phys. Rev. A 65, 042308 (2002)] to O(N/M).

Ying-Yu Zhang and Song-Feng Lu

2010-09-22T23:59:59.000Z

19

MobileMatch App  

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

MobileMatch VolunteerMatch Mobile App MobileMatch is a mobile extension (app) to LANL's VolunteerMatch site that allows volunteers to search, sign up and track hours. Contact...

20

Adiabatic Tip-Plasmon Focusing for Nano-Raman Spectroscopy. ...  

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

Adiabatic Tip-Plasmon Focusing for Nano-Raman Spectroscopy. Adiabatic Tip-Plasmon Focusing for Nano-Raman Spectroscopy. Abstract: True nanoscale optical spectroscopy requires the...

Note: This page contains sample records for the topic "adiabatic matching device" 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

Universal Non-adiabatic Holonomic Gates in Quantum Dots and Single-Molecule Magnets  

E-Print Network (OSTI)

Geometric manipulation of a quantum system offers a method for fast, universal, and robust quantum information processing. Here, we propose a scheme for universal all-geometric quantum computation using non-adiabatic quantum holonomies. We propose three different realizations of the scheme based on an unconventional use of quantum dot and single-molecule magnet devices, which offer promising scalability and robust efficiency.

Vahid Azimi Mousolou; Carlo M. Canali; Erik Sjöqvist

2012-09-17T23:59:59.000Z

22

Adiabatic theorems for generators of contracting evolutions  

E-Print Network (OSTI)

We develop an adiabatic theory for generators of contracting evolution on Banach spaces. This provides a uniform framework for a host of adiabatic theorems ranging from unitary quantum evolutions through quantum evolutions of open systems generated by Lindbladians all the way to classically driven stochastic systems. In all these cases the adiabatic evolution approximates, to lowest order, the natural notion of parallel transport in the manifold of instantaneous stationary states. The dynamics in the manifold of instantaneous stationary states and transversal to it have distinct characteristics: The former is irreversible and the latter is transient in a sense that we explain. Both the gapped and gapless cases are considered. Some applications are discussed.

J. E. Avron; M. Fraas; G. M. Graf; P. Grech

2012-06-04T23:59:59.000Z

23

General conditions for quantum adiabatic evolution  

SciTech Connect

Adiabaticity occurs when, during its evolution, a physical system remains in the instantaneous eigenstate of the Hamiltonian. Unfortunately, existing results, such as the quantum adiabatic theorem based on a slow down evolution [H({epsilon}t),{epsilon}{yields}0], are insufficient to describe an evolution driven by the Hamiltonian H(t) itself. Here we derive general criteria and exact bounds, for the state and its phase, ensuring an adiabatic evolution for any Hamiltonian H(t). As a corollary, we demonstrate that the commonly used condition of a slow Hamiltonian variation rate, compared to the spectral gap, is indeed sufficient to ensure adiabaticity but only when the Hamiltonian is real and nonoscillating (for instance, containing exponential or polynomial but no sinusoidal functions)

Comparat, Daniel [Laboratoire Aime Cotton, CNRS, Universite Paris-Sud, Batiment 505, 91405 Orsay (France)

2009-07-15T23:59:59.000Z

24

Lattice Boltzmann method for adiabatic acoustics  

Science Journals Connector (OSTI)

...Sauro Succi and Stefano Ubertini Lattice Boltzmann method for adiabatic acoustics...Burlington, MA 01803, USA The lattice Boltzmann method (LBM) has been proved...recovery of the full NS equations. lattice Boltzmann method|computational aero-acoustics...

2011-01-01T23:59:59.000Z

25

E-Print Network 3.0 - adiabatic demagnetization refrigerator...  

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

refrigerator Search Powered by Explorit Topic List Advanced Search Sample search results for: adiabatic demagnetization refrigerator...

26

Graph isomorphism and adiabatic quantum computing  

Science Journals Connector (OSTI)

In the graph isomorphism (GI) problem two N-vertex graphs G and G? are given and the task is to determine whether there exists a permutation of the vertices of G that preserves adjacency and transforms G?G?. If yes, then G and G? are said to be isomorphic; otherwise they are nonisomorphic. The GI problem is an important problem in computer science and is thought to be of comparable difficulty to integer factorization. In this paper we present a quantum algorithm that solves arbitrary instances of GI and which also provides an approach to determining all automorphisms of a given graph. We show how the GI problem can be converted to a combinatorial optimization problem that can be solved using adiabatic quantum evolution. We numerically simulate the algorithm's quantum dynamics and show that it correctly (i) distinguishes nonisomorphic graphs; (ii) recognizes isomorphic graphs and determines the permutation(s) that connect them; and (iii) finds the automorphism group of a given graph G. We then discuss the GI quantum algorithm's experimental implementation, and close by showing how it can be leveraged to give a quantum algorithm that solves arbitrary instances of the NP-complete subgraph isomorphism problem. The computational complexity of an adiabatic quantum algorithm is largely determined by the minimum energy gap ?(N) separating the ground and first-excited states in the limit of large problem size N?1. Calculating ?(N) in this limit is a fundamental open problem in adiabatic quantum computing, and so it is not possible to determine the computational complexity of adiabatic quantum algorithms in general, nor consequently, of the specific adiabatic quantum algorithms presented here. Adiabatic quantum computing has been shown to be equivalent to the circuit model of quantum computing, and so development of adiabatic quantum algorithms continues to be of great interest.

Frank Gaitan and Lane Clark

2014-02-28T23:59:59.000Z

27

Thermodynamics of systems with internal adiabatic constraints: time evolution of the adiabatic piston  

E-Print Network (OSTI)

piston Christian Gruber Institut de physique th'eorique Ecole Polytechnique F'ed'erale de Lausanne CH of the controversial adiabatic piston problem are obtained using a very primitive model of the fluids. It thus shows: the adiabatic piston problem For the last 30 years an ``elementary'' problem of thermostatics has raised

28

Send-side matching of data communications messages  

DOE Patents (OSTI)

Send-side matching of data communications messages includes a plurality of compute nodes organized for collective operations, including: issuing by a receiving node to source nodes a receive message that specifies receipt of a single message to be sent from any source node, the receive message including message matching information, a specification of a hardware-level mutual exclusion device, and an identification of a receive buffer; matching by two or more of the source nodes the receive message with pending send messages in the two or more source nodes; operating by one of the source nodes having a matching send message the mutual exclusion device, excluding messages from other source nodes with matching send messages and identifying to the receiving node the source node operating the mutual exclusion device; and sending to the receiving node from the source node operating the mutual exclusion device a matched pending message.

Archer, Charles J.; Blocksome, Michael A.; Ratterman, Joseph D.; Smith, Brian E.

2014-07-01T23:59:59.000Z

29

"Adiabatic Quantum Computing with the D-Wave One" | Princeton Plasma  

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

5, 2012, 4:15pm to 5:30pm 5, 2012, 4:15pm to 5:30pm Colloquia MSG Auditorium "Adiabatic Quantum Computing with the D-Wave One" Professor Robert F. Lucas University of Southern California Dr. Federico Spedalieri University of Southern California Presentation: WC05DEC2012_FSpedalieri.pptx The USC-Lockheed Martin Quantum Computing Center has taken delivery of a D-Wave One adiabatic quantum computer. In this talk, we will report on our experience assessing the quantum mechanical behavior of the device and benchmarking its performance. We will present experimental results that strongly indicate that quantum annealing is indeed being performed by D-Wave One, and show how the device performs when compared to classical computers on a particular optimization problem. We will also discuss a

30

Shortcuts to adiabaticity for trapped ultracold gases  

E-Print Network (OSTI)

We study, experimentally and theoretically, the controlled transfer of harmonically trapped ultracold gases between different quantum states. In particular we experimentally demonstrate a fast decompression and displacement of both a non-interacting gas and an interacting Bose-Einstein condensate which are initially at equilibrium. The decompression parameters are engineered such that the final state is identical to that obtained after a perfectly adiabatic transformation despite the fact that the fast decompression is performed in the strongly non-adiabatic regime. During the transfer the atomic sample goes through strongly out-of-equilibrium states while the external confinement is modified until the system reaches the desired stationary state. The scheme is theoretically based on the invariants of motion and scaling equations techniques and can be generalized to decompression trajectories including an arbitrary deformation of the trap. It is also directly applicable to arbitrary initial non-equilibrium sta...

Schaff, Jean-François; Labeyrie, Guillaume; Vignolo, Patrizia

2011-01-01T23:59:59.000Z

31

Shortcuts to adiabaticity for trapped ultracold gases  

E-Print Network (OSTI)

We study, experimentally and theoretically, the controlled transfer of harmonically trapped ultracold gases between different quantum states. In particular we experimentally demonstrate a fast decompression and displacement of both a non-interacting gas and an interacting Bose-Einstein condensate which are initially at equilibrium. The decompression parameters are engineered such that the final state is identical to that obtained after a perfectly adiabatic transformation despite the fact that the fast decompression is performed in the strongly non-adiabatic regime. During the transfer the atomic sample goes through strongly out-of-equilibrium states while the external confinement is modified until the system reaches the desired stationary state. The scheme is theoretically based on the invariants of motion and scaling equations techniques and can be generalized to decompression trajectories including an arbitrary deformation of the trap. It is also directly applicable to arbitrary initial non-equilibrium states.

Jean-François Schaff; Pablo Capuzzi; Guillaume Labeyrie; Patrizia Vignolo

2011-05-11T23:59:59.000Z

32

Holonomic Quantum Computation via Adiabatic Shortcut  

E-Print Network (OSTI)

Fast quantum gates based on geometric phases provide a platform for performing robust quantum computation. In particular, non-adiabatic holonomic quantum computation, which involves non-Abelian geometric phases to achieve universality, has recently been demonstrated in several experiments. Here, we generalize the transitionless quantum driving algorithm to a degenerate Hilbert space, with which we propose a route towards fast holonomic quantum computation. We propose a proof-of-principle experiment in a superconducting circuit architecture to realize our scheme.

J. Zhang; Thi Ha Kyaw; D. M. Tong; Erik Sjöqvist; L. C. Kwek

2014-12-09T23:59:59.000Z

33

Interconnector device  

SciTech Connect

This patent describes an interconnector device that allows a lithium-type battery to be substituted for a Leclanche battery. The Leclanche battery is of predetermined dimensions and has a pair of coil spring connection terminals at predetermined locations on the top surface thereof. The lithium battery of different predetermined dimensions than the Lechanche battery and has a pair of female connection sockets positioned at a predetermined off-center location on the top surface. The locations of the coil spring terminals and the connection sockets of the respective batteries are at substantially different non-matching positions, comprising a thin flat water of non-conducive material of predetermined size and configuration, the wafer having the same cross-section dimensions as the Leclanche battery. A pair of prongs on the underside surface of the wafer and at locations correspond to the locations of the female connection sockets of the lithium battery. The prongs received into the female connection sockets when the interconnector device is mounted on the lithium batter. A pair of coil spring connection terminals mounted on the opposite of top surface of the wafer and having a configuration which matches that of the connection terminals of the Leclanche battery and positioned at locations which corresponds to the locations of the coil spring connection terminals of the Leclanche battery. A pair of electrical conductors plated on the underside surface of the wafer for respectively interconnecting the pairs of prongs and the pair of coil spring connection terminals in parallel.

Christopulos, J.A.

1987-07-07T23:59:59.000Z

34

Bond selective chemistry beyond the adiabatic approximation  

SciTech Connect

One of the most important challenges in chemistry is to develop predictive ability for the branching between energetically allowed chemical reaction pathways. Such predictive capability, coupled with a fundamental understanding of the important molecular interactions, is essential to the development and utilization of new fuels and the design of efficient combustion processes. Existing transition state and exact quantum theories successfully predict the branching between available product channels for systems in which each reaction coordinate can be adequately described by different paths along a single adiabatic potential energy surface. In particular, unimolecular dissociation following thermal, infrared multiphoton, or overtone excitation in the ground state yields a branching between energetically allowed product channels which can be successfully predicted by the application of statistical theories, i.e. the weakest bond breaks. (The predictions are particularly good for competing reactions in which when there is no saddle point along the reaction coordinates, as in simple bond fission reactions.) The predicted lack of bond selectivity results from the assumption of rapid internal vibrational energy redistribution and the implicit use of a single adiabatic Born-Oppenheimer potential energy surface for the reaction. However, the adiabatic approximation is not valid for the reaction of a wide variety of energetic materials and organic fuels; coupling between the electronic states of the reacting species play a a key role in determining the selectivity of the chemical reactions induced. The work described below investigated the central role played by coupling between electronic states in polyatomic molecules in determining the selective branching between energetically allowed fragmentation pathways in two key systems.

Butler, L.J. [Univ. of Chicago, IL (United States)

1993-12-01T23:59:59.000Z

35

Adiabatic plastic deformation: the case of cutting process  

Science Journals Connector (OSTI)

Numerical and experimental research program was developed taking into account the high speed machining particularities. The results was analyzed by approaching the cutting process as adiabatic plastic deformation process. Firstly, the process of material ... Keywords: adiabatic cutting process, cutting thermodynamic system, high speed machining, surface layer

C. Maier; V. Vacarus; M. Banu; A. Epureanu

2009-10-01T23:59:59.000Z

36

Quantum tunneling in the adiabatic Dicke model  

SciTech Connect

The Dicke model describes N two-level atoms interacting with a single-mode bosonic field and exhibits a second-order phase transition from the normal to the superradiant phase. The energy levels are not degenerate in the normal phase but have degeneracy in the superradiant phase, where quantum tunneling occurs. By means of the Born-Oppenheimer approximation and the instanton method in quantum field theory, the tunneling splitting, inversely proportional to the tunneling rate for the adiabatic Dicke model, in the superradiant phase can be evaluated explicitly. It is shown that the tunneling splitting vanishes as exp(-N) for large N, whereas for small N it disappears as {radical}(N)/exp(N). The dependence of the tunneling splitting on the relevant parameters, especially on the atom-field coupling strength, is also discussed.

Chen Gang [Department of Physics, Shaoxing College of Arts and Sciences, Shaoxing 312000 (China); Institute of Theoretical Physics, Shanxi University, Taiyuan 030006 (China); Chen Zidong [Department of Physics, Shaoxing College of Arts and Sciences, Shaoxing 312000 (China); Liang Jiuqing [Institute of Theoretical Physics, Shanxi University, Taiyuan 030006 (China)

2007-10-15T23:59:59.000Z

37

Adiabatic Approximation, Semiclassical Scattering, and Unidirectional Invisibility  

E-Print Network (OSTI)

The transfer matrix of a possibly complex and energy-dependent scattering potential can be identified with the $S$-matrix of a two-level time-dependent non-Hermitian Hamiltonian H(t). We show that the application of the adiabatic approximation to H(t) corresponds to the semiclassical description of the original scattering problem. In particular, the geometric part of the phase of the evolving eigenvectors of H(t) gives the pre-exponential factor of the WKB wave functions. We use these observations to give an explicit semiclassical expression for the transfer matrix. This allows for a detailed study of the semiclassical unidirectional reflectionlessness and invisibility. We examine concrete realizations of the latter in the realm of optics.

Ali Mostafazadeh

2014-01-17T23:59:59.000Z

38

Adiabatic Quantum Optimization for Associative Memory Recall  

E-Print Network (OSTI)

Hopfield networks are a variant of associative memory that recall information stored in the couplings of an Ising model. Stored memories are fixed points for the network dynamics that correspond to energetic minima of the spin state. We formulate the recall of memories stored in a Hopfield network using energy minimization by adiabatic quantum optimization (AQO). Numerical simulations of the quantum dynamics allow us to quantify the AQO recall accuracy with respect to the number of stored memories and the noise in the input key. We also investigate AQO performance with respect to how memories are stored in the Ising model using different learning rules. Our results indicate that AQO performance varies strongly with learning rule due to the changes in the energy landscape. Consequently, learning rules offer indirect methods for investigating change to the computational complexity of the recall task and the computational efficiency of AQO.

Hadayat Seddiqi; Travis S. Humble

2014-07-07T23:59:59.000Z

39

Non-adiabatic molecular dynamics with complex quantum trajectories. II. The adiabatic representation  

SciTech Connect

We present a complex quantum trajectory method for treating non-adiabatic dynamics. Each trajectory evolves classically on a single electronic surface but with complex position and momentum. The equations of motion are derived directly from the time-dependent Schroedinger equation, and the population exchange arises naturally from amplitude-transfer terms. In this paper the equations of motion are derived in the adiabatic representation to complement our work in the diabatic representation [N. Zamstein and D. J. Tannor, J. Chem. Phys. 137, 22A517 (2012)]. We apply our method to two benchmark models introduced by John Tully [J. Chem. Phys. 93, 1061 (1990)], and get very good agreement with converged quantum-mechanical calculations. Specifically, we show that decoherence (spatial separation of wavepackets on different surfaces) is already contained in the equations of motion and does not require ad hoc augmentation.

Zamstein, Noa; Tannor, David J. [Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100 (Israel)

2012-12-14T23:59:59.000Z

40

E-Print Network 3.0 - adiabatic feedback model Sample Search...  

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Quantum Algorithm Minor-embedding Adiabatic Quantum Architecture Design ic Ising Model... -embedding Adiabatic Quantum Architecture Design ic Ising Model QUBO (J>0)...

Note: This page contains sample records for the topic "adiabatic matching device" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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41

E-Print Network 3.0 - adiabatic explosion model Sample Search...  

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Quantum Algorithm Minor-embedding Adiabatic Quantum Architecture Design ic Ising Model... -embedding Adiabatic Quantum Architecture Design ic Ising Model QUBO (J>0)...

42

E-Print Network 3.0 - adiabatic hamiltonian deformation Sample...  

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Minor-embedding Adiabatic Quantum Architecture Design Final Hamiltonian Hfinal for Ising... Adiabatic Quantum Algorithm Minor-embedding ... Source: Choi, Vicky - Department of...

43

E-Print Network 3.0 - adiabatic spatial-spectral refocusing Sample...  

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

of the modulated image is observed. This same procedure can be repeated to create a train of adiabatic refocusing... Communication Broadband phase modulation by adiabatic...

44

E-Print Network 3.0 - adiabatic quantum evolution Sample Search...  

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Chinese Academy of Sciences Collection: Physics 34 Quantum measurement via Born-Oppenheimer adiabatic dynamics C. P. Sun,1,2 Summary: , the adiabatic evolution of the system...

45

E-Print Network 3.0 - adiabatic compression heating Sample Search...  

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Heating 12;Adiabatic Descending... and Diabatic Adiabatic means occurring without loss or gain of heat. Diabatic means occurring... with an exchange of heat. ... Source:...

46

Match Pumps to System Requirements  

SciTech Connect

BestPractices Program tip sheet discussing pumping system efficiency matching pumps to system requirements

Not Available

2005-10-01T23:59:59.000Z

47

Macroscopic equations for the adiabatic piston  

E-Print Network (OSTI)

A simplified version of a classical problem in thermodynamics -- the adiabatic piston -- is discussed in the framework of kinetic theory. We consider the limit of gases whose relaxation time is extremely fast so that the gases contained on the left and right chambers of the piston are always in equilibrium (that is the molecules are uniformly distributed and their velocities obey the Maxwell-Boltzmann distribution) after any collision with the piston. Then by using kinetic theory we derive the collision statistics from which we obtain a set of ordinary differential equations for the evolution of the macroscopic observables (namely the piston average velocity and position, the velocity variance and the temperatures of the two compartments). The dynamics of these equations is compared with simulations of an ideal gas and a microscopic model of gas settled to verify the assumptions used in the derivation. We show that the equations predict an evolution for the macroscopic variables which catches the basic features of the problem. The results here presented recover those derived, using a different approach, by Gruber, Pache and Lesne in J. Stat. Phys. 108, 669 (2002) and 112, 1177 (2003).

Massimo Cencini; Luigi Palatella; Simone Pigolotti; Angelo Vulpiani

2007-09-13T23:59:59.000Z

48

Bounds for the adiabatic approximation with applications to quantum computation  

SciTech Connect

We present straightforward proofs of estimates used in the adiabatic approximation. The gap dependence is analyzed explicitly. We apply the result to interpolating Hamiltonians of interest in quantum computing.

Jansen, Sabine; Ruskai, Mary-Beth; Seiler, Ruedi [Institut fuer Mathematik, TU Berlin, MA 7-2, Strasse des 17, Juni 136, D-10623 Berlin (Germany); Department of Mathematics, Tufts University, Medford, Massachusetts 02155 (United States); Institut fuer Mathematik, TU Berlin, MA 7-2, Strasse des 17, Juni 136, D-10623 Berlin (Germany)

2007-10-15T23:59:59.000Z

49

Quantum state engineering in ion-traps via adiabatic passage  

Science Journals Connector (OSTI)

We propose two relatively robust schemes to generate entangled W states of three (or generally N) ions in ion trap systems by using adiabatic passage technique and appropriately designed ion-field couplings in a ...

M. Amniat-Talab; M. Saadati-Niari; S. Guérin

2012-08-01T23:59:59.000Z

50

General dynamical description of quasi-adiabatically encircling exceptional points  

E-Print Network (OSTI)

The appearance of so-called exceptional points in the complex spectra of non-Hermitian systems is often associated with phenomena that contradict our physical intuition. One example of particular interest is the state-exchange process predicted for an adiabatic encircling of an exceptional point. In this work we analyze this process for the generic system of two coupled oscillator modes with loss or gain. We identify a characteristic system evolution consisting of periods of quasi-stationarity interrupted by abrupt non-adiabatic transitions. Our findings explain the breakdown of the adiabatic theorem as well as the chiral behavior noticed previously in this context, and we provide a unified framework to describe quasi-adiabatic dynamical effects in non-Hermitian systems in a qualitative and quantitative way.

Thomas J. Milburn; Jörg Doppler; Catherine A. Holmes; Stefano Portolan; Stefan Rotter; Peter Rabl

2014-10-07T23:59:59.000Z

51

E-Print Network 3.0 - adiabatic diesel engine Sample Search Results  

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engine Search Powered by Explorit Topic List Advanced Search Sample search results for: adiabatic diesel engine...

52

Adiabatic Decoupling and Time-Dependent Born-Oppenheimer Theory  

E-Print Network (OSTI)

We reconsider the time-dependent Born-Oppenheimer theory with the goal to carefully separate between the adiabatic decoupling of a given group of energy bands from their orthogonal subspace and the semiclassics within the energy bands. Band crossings are allowed and our results are local in the sense that they hold up to the first time when a band crossing is encountered. The adiabatic decoupling leads to an effective Schroedinger equation for the nuclei, including contributions from the Berry connection.

Herbert Spohn; Stefan Teufel

2001-11-09T23:59:59.000Z

53

Ultra-high-speed optical and electronic distributed devices  

SciTech Connect

This report summarizes work on the development of ultra-high-speed semiconductor optical and electronic devices. High-speed operation is achieved by velocity matching the input stimulus to the output signal along the device`s length. Electronic devices such as field-effect transistors (FET`s), should experience significant speed increases by velocity matching the electrical input and output signals along the device. Likewise, optical devices, which are typically large, can obtain significant bandwidths by velocity matching the light being generated, detected or modulated with the electrical signal on the device`s electrodes. The devices discussed in this report utilize truly distributed electrical design based on slow-wave propagation to achieve velocity matching.

Hietala, V.M.; Plut, T.A.; Kravitz, S.H.; Vawter, G.A.; Wendt, J.R.; Armendariz, M.G.

1995-08-01T23:59:59.000Z

54

Multiple matching of parameterized patterns  

Science Journals Connector (OSTI)

We extend Baker's theory of parameterized pattern matching [Proc. 25th Annual STOC, 1993, pp. 71–80] to algorithms that match multiple patterns in a text. We first consider the case where the patterns are fixed a...

Ramana M. Idury; Alejandro A. Schäffer

1994-01-01T23:59:59.000Z

55

Shape matching by random sampling  

Science Journals Connector (OSTI)

In order to determine the similarity between two planar shapes, which is an important problem in computer vision and pattern recognition, it is necessary to first match the two shapes as well as possible. As sets of allowed transformation to match shapes ... Keywords: Geometric shape matching, Probabilistic algorithms

Helmut Alt; Ludmila Scharf

2012-07-01T23:59:59.000Z

56

Multiple matching of parameterized patterns  

Science Journals Connector (OSTI)

We extend Baker's theory of parameterized string matching (1993) to algorithms that match multiple patterns in a text. We first consider the case where the patterns are fixed and preprocessed once, and then the case where the pattern set can change by insertions and deletions. Baker's algorithms are based on suffix trees, whereas ours are based on pattern matching automata.

Ramana M. Idury; Alejandro A. Schäffer

1996-01-01T23:59:59.000Z

57

Current- and lattice-matched tandem solar cell  

DOE Patents (OSTI)

A multijunction (cascade) tandem photovoltaic solar cell device is fabricated of a Ga/sub x/In/sub 1-x/P (0.505 equal to or less than x equal to or less than 0.515) top cell semiconductor lattice-matched to a GaAs bottom cell semiconductor at a low resistance heterojunction, preferably a p/sup +//n/sup +/ heterojunction between the cells. The top and bottom cells are both lattice-matched and current-matched for high efficiency solar radiation conversion to electrical energy.

Olson, J.M.

1985-10-21T23:59:59.000Z

58

Single-electron source: Adiabatic versus nonadiabatic emission  

Science Journals Connector (OSTI)

We investigate adiabatic and nonadiabatic emission of single particles into an edge state using an analytically solvable dynamical scattering matrix model of an on-demand source. We compare adiabatic and nonadiabatic emissions by considering two geometries: a collider geometry where two emitters are coupled to two different edge states and a series geometry where two emitters are coupled to the same edge state. Most effects observed for adiabatic emitters also occur for nonadiabatic emitters. In particular this applies to effects arising due to the overlap of wave packets colliding at a quantum point contact. Specifically we compare the Pauli peak (the fermionic analog of the bosonic Hong-Ou-Mandel dip) for the adiabatic and nonadiabatic collider and find them to be similar. In contrast we find a striking difference between the two operating conditions in the series geometry in which particles are emitted into the same edge state. Whereas the squared average charge current can be nullified for both operating conditions, the heat current can be made to vanish only with adiabatic emitters.

Michael Moskalets; Géraldine Haack; Markus Büttiker

2013-03-29T23:59:59.000Z

59

To match or not to match: Economics of cookie matching in online advertising  

E-Print Network (OSTI)

To match or not to match: Economics of cookie matching in online advertising Arpita Ghosh, Yahoo Modern online advertising increasingly relies on the availability of user tracking technology called to share infor- mation about the websites a user has visited, making it possible to target advertisements

Fiat, Amos

60

To Match or Not to Match: Economics of Cookie Matching in Online Advertising  

E-Print Network (OSTI)

To Match or Not to Match: Economics of Cookie Matching in Online Advertising Arpita Ghosh, Yahoo Modern online advertising increasingly relies on the availability of user tracking technology called to share infor- mation about the websites a user has visited, making it possible to target advertisements

Fiat, Amos

Note: This page contains sample records for the topic "adiabatic matching device" 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

Implementing an ancilla-free 1?M economical phase-covariant quantum cloning machine with superconducting quantum-interference devices in cavity QED  

Science Journals Connector (OSTI)

We propose a simple scheme to realize 1?M economical phase-covariant quantum cloning machine (EPQCM) with superconducting quantum interference device (SQUID) qubits. In our scheme, multi-SQUIDs are fixed into a microwave cavity by adiabatic passage for their manipulation. Based on this model, we can realize the EPQCM with high fidelity via adiabatic quantum computation.

Long-Bao Yu; Wen-Hai Zhang; Liu Ye

2007-09-17T23:59:59.000Z

62

Classical nuclear motion coupled to electronic non-adiabatic transitions  

E-Print Network (OSTI)

We present a detailed derivation and numerical tests of a new mixed quantum-classical scheme to deal with non-adiabatic processes. The method is presented as the zero-th order approximation to the exact coupled dynamics of electrons and nuclei offered by the factorization of the electron-nuclear wave function [A. Abedi, N. T. Maitra and E. K. U. Gross, Phys. Rev. Lett., 105 (2010)]. Numerical results are presented for a model system for non-adiabatic charge transfer in order to test the performance of the method and to validate the underlying approximations.

Federica Agostini; Ali Abedi; E. K. U. Gross

2014-06-19T23:59:59.000Z

63

E-Print Network 3.0 - adiabatic surface ionization Sample Search...  

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

Stability & Skew-T - 48 points 1. (5 points) What is an adiabatic... process? Why are the moist and dry adiabatic rates of cooling different? An ... Source: Rutledge, Steven -...

64

Access to Legal Documents: Exact Match, Best Match, and Combinations  

E-Print Network (OSTI)

the Legal track uses a test collection, containing 6,910,192 documents (58Gb uncompressed). The documentsAccess to Legal Documents: Exact Match, Best Match, and Combinations Avi Arampatzis1 Jaap Kamps1 of Amsterdam 2 ISLA, Informatics Institute, University of Amsterdam Abstract: In this paper, we document our

Kamps, Jaap

65

An Assessment of the Performance and Requirements for "Adiabatic" Engines  

Science Journals Connector (OSTI)

...Adiabatic" Engines JAMES ZUCCHETrO...MILLER* A review of research...rejection engines, on cooperative...intermittent combustion engines...combustion chamber of diesel...ADVENT OF THE INTERNAL COMBUSTION...analytical and experimental evidence...systematic studies are not available...high-swirl engines (9). These...walls of the combustion chamber; the square...

JAMES ZUCCHETTO; PHILLIP MYERS; JOHN JOHNSON; DENNIS MILLER

1988-05-27T23:59:59.000Z

66

From the adiabatic piston to macroscopic motion induced by fluctuations  

E-Print Network (OSTI)

From the adiabatic piston to macroscopic motion induced by fluctuations J. Piasecki Institute. In the case of two infinite volume one­ dimensional ideal fluids separated by a piston whose mass is equal of the Boltzmann equation. It is shown that at equal pressures on both sides of the piston, the temperature

67

E-Print Network 3.0 - adiabatic fast passage Sample Search Results  

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

... 21 3.2 Transient Heat Transfer Loss... -piston Stirling engine. These losses are: adiabatic cylinder effects, transient heat transfer, ......

68

Biochip scanner device  

DOE Patents (OSTI)

A biochip scanner device used to detect and acquire fluorescence signal data from biological microchips or biochips and method of use are provided. The biochip scanner device includes a laser for emitting a laser beam. A modulator, such as an optical chopper modulates the laser beam. A scanning head receives the modulated laser beam and a scanning mechanics coupled to the scanning head moves the scanning head relative to the biochip. An optical fiber delivers the modulated laser beam to the scanning head. The scanning head collects the fluorescence light from the biochip, launches it into the same optical fiber, which delivers the fluorescence into a photodetector, such as a photodiode. The biochip scanner device is used in a row scanning method to scan selected rows of the biochip with the laser beam size matching the size of the immobilization site.

Perov, Alexander (Troitsk, RU); Belgovskiy, Alexander I. (Mayfield Heights, OH); Mirzabekov, Andrei D. (Darien, IL)

2001-01-01T23:59:59.000Z

69

DOE Matching Grant Program  

SciTech Connect

Funding used to support a portion of the Nuclear Engineering Educational Activities. Upgrade of teaching labs, student support to attend professional conferences, salary support for graduate students. The US Department of Energy (DOE) has funded Purdue University School of Nuclear Engineering during the period of five academic years covered in this report starting in the academic year 1996-97 and ending in the academic year 2000-2001. The total amount of funding for the grant received from DOE is $416K. In the 1990's, Nuclear Engineering Education in the US experienced a significant slow down. Student enrollment, research support, number of degrees at all levels (BS, MS, and PhD), number of accredited programs, University Research and Training Reactors, all went through a decline to alarmingly low levels. Several departments closed down, while some were amalgamated with other academic units (Mechanical Engineering, Chemical Engineering, etc). The School of Nuclear Engineering at Purdue University faced a major challenge when in the mid 90's our total undergraduate enrollment for the Sophomore, Junior and Senior Years dropped in the low 30's. The DOE Matching Grant program greatly strengthened Purdue's commitment to the Nuclear Engineering discipline and has helped to dramatically improve our undergraduate and graduate enrollment, attract new faculty and raise the School of Nuclear Engineering status within the University and in the National scene (our undergraduate enrollment has actually tripled and stands at an all time high of over 90 students; total enrollment currently exceeds 110 students). In this final technical report we outline and summarize how the grant was expended at Purdue University.

Tsoukalas, L.

2002-12-31T23:59:59.000Z

70

A modified quantum adiabatic evolution for the Deutsch-Jozsa problem  

E-Print Network (OSTI)

Deutsch-Jozsa algorithm has been implemented via a quantum adiabatic evolution by S. Das et al. [Phys. Rev. A 65, 062310 (2002)]. This adiabatic algorithm gives rise to a quadratic speed up over classical algorithms. We show that a modified version of the adiabatic evolution in that paper can improve the performance to constant time.

Zhaohui Wei; Mingsheng Ying

2005-12-01T23:59:59.000Z

71

Stationary Motion of the Adiabatic Piston Institut de Physique Th'eorique, '  

E-Print Network (OSTI)

Stationary Motion of the Adiabatic Piston Ch. Gruber Institut de Physique Th'eorique, ' Ecole , separated by an adiabatic movable piston whose mass M is much larger than the mass m of the fluid particules. This is the infinite version of the controversial adiabatic piston problem. The stationary non­equilibrium solution

72

Daydreaming Devices  

E-Print Network (OSTI)

Daydreaming Devices is a project on aspects of daydream and the design of convertible furniture within the context of art. This thesis addresses the concepts and the design of two daydreaming devices developed during my ...

Da Ponte, Ana Sofia Lopes

2008-01-01T23:59:59.000Z

73

Optimal Shortcuts to Adiabaticity for a Quantum Piston  

E-Print Network (OSTI)

In this paper we use optimal control to design minimum-time adiabatic-like paths for the expansion of a quantum piston. Under realistic experimental constraints, we calculate the minimum expansion time and compare it with that obtained from a state of the art inverse engineering method. We use this result to rederive the known upper bound for the cooling rate of a refrigerator, which provides a quantitative description for the unattainability of absolute zero, the third law of thermodynamics. We finally point out the relation of the present work to the fast adiabatic-like expansion of an accordion optical lattice, a system which can be used to magnify the initial quantum state (quantum microscope).

Dionisis Stefanatos

2013-01-22T23:59:59.000Z

74

Adiabatic Preparation of a Heisenberg Antiferromagnet Using an Optical Superlattice  

E-Print Network (OSTI)

We analyze the possibility to prepare a Heisenberg antiferromagnet with cold fermions in optical lattices, starting from a band insulator and adiabatically changing the lattice potential. The numerical simulation of the dynamics in 1D allows us to identify the conditions for success, and to study the influence that the presence of holes in the initial state may have on the protocol. We also extend our results to two-dimensional systems.

Michael Lubasch; Valentin Murg; Ulrich Schneider; J. Ignacio Cirac; Mari-Carmen Bañuls

2011-11-06T23:59:59.000Z

75

Adiabatic preparation of a Heisenberg antiferromagnet using an optical superlattice  

E-Print Network (OSTI)

We analyze the possibility to prepare a Heisenberg antiferromagnet with cold fermions in optical lattices, starting from a band insulator and adiabatically changing the lattice potential. The numerical simulation of the dynamics in 1D allows us to identify the conditions for success, and to study the influence that the presence of holes in the initial state may have on the protocol. We also extend our results to two-dimensional systems.

Lubasch, Michael; Schneider, Ulrich; Cirac, J Ignacio; Bañuls, Mari-Carmen

2011-01-01T23:59:59.000Z

76

Adiabatic trapping in coupled kinetic Alfven-acoustic waves  

SciTech Connect

In the present work, we have discussed the effects of adiabatic trapping of electrons on obliquely propagating Alfven waves in a low {beta} plasma. Using the two potential theory and employing the Sagdeev potential approach, we have investigated the existence of arbitrary amplitude coupled kinetic Alfven-acoustic solitary waves in both the sub and super Alfvenic cases. The results obtained have been analyzed and presented graphically and can be applied to regions of space where the low {beta} assumption holds true.

Shah, H. A.; Ali, Z. [Department of Physics, G.C. University, 54000 Lahore (Pakistan); Masood, W. [COMSATS, Institute of Information Technology, Park Road, Chak Shahzad, Islamabad 44000 (Pakistan); National Centre for Physics (NCP), Shahdara Valley Road, 44000 Islamabad (Pakistan); Theoretical Plasma Physics Division, P. O. Nilore, Islamabad (Pakistan)

2013-03-15T23:59:59.000Z

77

Roles of Dry Friction in Fluctuating Motion of Adiabatic Piston  

E-Print Network (OSTI)

The motion of an adiabatic piston under dry friction is investigated to clarify the roles of dry friction in non-equilibrium steady states. We clarify that dry friction can reverse the direction of the piston motion and causes a discontinuity or a cusp-like singularity for velocity distribution functions of the piston. We also show that the heat fluctuation relation is modified under dry friction.

Tomohiko G. Sano; Hisao Hayakawa

2014-03-08T23:59:59.000Z

78

Steam bottoming cycle for an adiabatic diesel engine  

SciTech Connect

A study of steam bottoming cycles using adiabatic diesel engine exhaust heat projected substantial performance and economic benefits for long haul trucks. A parametric analysis of steam cycle and system component variables, system cost, size and performance was conducted. An 811 K/6.90 MPa state-of-the-art reciprocating expander steam system with a monotube boiler and radiator core condenser was selected for preliminary design. When applied to a NASA specified turbo-charged adiabatic diesel the bottoming system increased the diesel output by almost 18%. In a comparison of the costs of the diesel with bottoming system (TC/B) and a NASA specified turbocompound adiabatic diesel with after-cooling with the same total output, the annual fuel savings less the added maintenance cost was determined to cover the increased initial cost of the TC/B system in a payback period of 2.3 years. Also during this program steam bottoming system freeze protection strategies were developed, technological advances required for improved system reliability were considered and the cost and performance of advanced systems were evaluated.

Poulin, E.; Demler, R.; Krepchin, I.; Walker, D.

1984-03-01T23:59:59.000Z

79

Deactivation models by fitting the progression of temperature profiles – Coking model for the MTG process in adiabatic reactors  

Science Journals Connector (OSTI)

Abstract A methodology for estimating deactivation models for catalysts in industrial application is proposed. The method applies the movement of the measured axial temperature profile to gain information of the deactivating phenomena. For adiabatic reactors the conditions must be obtained by controlled heat compensation in a reactor furnace. As an example a deactivation model for the industrial methanol-to-gasoline (MTG) process is developed. The deactivation model together with suitable reactor models is a system of coupled partial differential equations with time and spatial coordinate as the independent variables. The unknown model parameters are estimated via a non-linear least square method, by matching predicted axial temperature profiles with measured profiles obtained in a pilot reactor containing a gasoline synthesis test catalyst.

Martin Dan Palis Sørensen

2014-01-01T23:59:59.000Z

80

Electrochromic devices  

DOE Patents (OSTI)

An electrochromic device is disclosed having a selective ion transport layer which separates an electrochemically active material from an electrolyte containing a redox active material. The devices are particularly useful as large area architectural and automotive glazings due to there reduced back reaction.

Allemand, Pierre M. (Tucson, AZ); Grimes, Randall F. (Ann Arbor, MI); Ingle, Andrew R. (Tucson, AZ); Cronin, John P. (Tucson, AZ); Kennedy, Steve R. (Tuscon, AZ); Agrawal, Anoop (Tucson, AZ); Boulton, Jonathan M. (Tucson, AZ)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "adiabatic matching device" 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

Training a Large Scale Classifier with the Quantum Adiabatic Algorithm  

E-Print Network (OSTI)

In a previous publication we proposed discrete global optimization as a method to train a strong binary classifier constructed as a thresholded sum over weak classifiers. Our motivation was to cast the training of a classifier into a format amenable to solution by the quantum adiabatic algorithm. Applying adiabatic quantum computing (AQC) promises to yield solutions that are superior to those which can be achieved with classical heuristic solvers. Interestingly we found that by using heuristic solvers to obtain approximate solutions we could already gain an advantage over the standard method AdaBoost. In this communication we generalize the baseline method to large scale classifier training. By large scale we mean that either the cardinality of the dictionary of candidate weak classifiers or the number of weak learners used in the strong classifier exceed the number of variables that can be handled effectively in a single global optimization. For such situations we propose an iterative and piecewise approach in which a subset of weak classifiers is selected in each iteration via global optimization. The strong classifier is then constructed by concatenating the subsets of weak classifiers. We show in numerical studies that the generalized method again successfully competes with AdaBoost. We also provide theoretical arguments as to why the proposed optimization method, which does not only minimize the empirical loss but also adds L0-norm regularization, is superior to versions of boosting that only minimize the empirical loss. By conducting a Quantum Monte Carlo simulation we gather evidence that the quantum adiabatic algorithm is able to handle a generic training problem efficiently.

Hartmut Neven; Vasil S. Denchev; Geordie Rose; William G. Macready

2009-12-04T23:59:59.000Z

82

Combustion characteristics of coal fuels in adiabatic diesel engines  

SciTech Connect

An experimental investigation was conducted to determine the combustion characteristics of coal fuels in adiabatic diesel engines. For this purpose engine testing was carried out by the fumigation of fine coal powder to the intake of an insulated and uncooled single cylinder diesel engine. The engine tests conducted include three types of fuels - Diesel fuel No. 2 (DF-2), Dual fuel (DF-2 + Coal), and Coal fuel. Excellent combustion characteristics of coal fuels were obtained in the present work in an adiabatic engine operating at high temperatures. The ''thermal ignition'' concept uncovered in this investigation led to a hot ''ignition chamber'' which provided ignition of the coal fuel. The high temperature engine with the ''ignition chamber'' permitted engine operation on 100% coal fuel without any external ignition aids or compression ignition. With the addition of a glow plug, the coal fueled engine was successfully cold started. For the coal fueled engine tests, analysis of cylinder pressure data showed rapid heat release rates, shorter combustion duration and very fast burning of coal powder fuel. Preliminary results of the apparent indicated cycle efficiency calculated from the heat release data, indicate that 100% coal powder fueled engine has higher cycle efficiency than DF-2 fueled engine in an adiabatic configuration. The problems encountered during the engine tests include: variation in the engine speed and load due to non-uniform coal flow rate by the coal feed system, contamination of the lubricating oil with fine coal powder, and wear of conventional piston rings. However, these problems can be solved with an improved coal feed system and wear resistant ceramic materials for the piston rings. 33 refs.

Kamo, R.; Kakwani, R.M.; Woods, M.E.; Valdmanis, E.

1986-06-01T23:59:59.000Z

83

Piecewise Adiabatic Passage with a Series of Femtosecond Pulses  

SciTech Connect

We develop a method of executing complete population transfers between quantum states in a piecewise manner using a series of femtosecond laser pulses. The method can be applied to a large class of problems as it benefits from the high peak powers and large spectral bandwidths afforded by femtosecond pulses. The degree of population transfer is robust to a wide variation in the absolute and relative intensities, durations, and time ordering of the pulses. The method is studied in detail for atomic sodium where piecewise adiabatic population transfer, as well as the induction of Ramsey-type interferences, is demonstrated.

Shapiro, E. A. [Department of Chemistry, University of British Columbia, Vancouver, V6T1Z3 (Canada); Milner, V. [Department of Chemistry, University of British Columbia, Vancouver, V6T1Z3 (Canada); Department of Physics, University of British Columbia, Vancouver, V6T1Z3 (Canada); Menzel-Jones, C. [Department of Physics, University of British Columbia, Vancouver, V6T1Z3 (Canada); Shapiro, M. [Department of Chemistry, University of British Columbia, Vancouver, V6T1Z3 (Canada); Department of Physics, University of British Columbia, Vancouver, V6T1Z3 (Canada); Department of Chemical Physics, Weizmann Institute, Rehovot, 76100 (Israel)

2007-07-20T23:59:59.000Z

84

Adiabatic contraction revisited: implications for primordial black holes  

E-Print Network (OSTI)

We simulate the adiabatic contraction of a dark matter (DM) distribution during the process of the star formation, paying particular attention to the phase space distribution of the DM particles after the contraction. Assuming the initial uniform density and Maxwellian distribution of DM velocities, we find that the number $n(r)$ of DM particles within the radius $r$ scales like $n(r) \\propto r^{1.5}$, leading to the DM density profile $\\rho\\propto r^{-1.5}$, in agreement with the Liouville theorem and previous numerical studies. At the same time, the number of DM particles $\

Fabio Capela; Maxim Pshirkov; Peter Tinyakov

2014-10-13T23:59:59.000Z

85

Hilbert Space Average Method and adiabatic quantum search  

E-Print Network (OSTI)

We discuss some aspects related to the so-called Hilbert space Average Method, as an alternative to describe the dynamics of open quantum systems. First we present a derivation of the method which does not make use of the algebra satisfied by the operators involved in the dynamics, and extend the method to systems subject to a Hamiltonian that changes with time. Next we examine the performance of the adiabatic quantum search algorithm with a particular model for the environment. We relate our results to the criteria discussed in the literature for the validity of the above-mentioned method for similar environments.

A. Perez

2009-01-19T23:59:59.000Z

86

Non-adiabatic pumping in an oscillating-piston model  

E-Print Network (OSTI)

We consider the prototypical "piston pump" operating on a ring, where a circulating current is induced by means of an AC driving. This can be regarded as a generalized Fermi-Ulam model, incorporating a finite-height moving wall (piston) and non trivial topology (ring). The amount of particles transported per cycle is determined by a layered structure of phase-space. Each layer is characterized by a different drift velocity. We discuss the differences compared with the adiabatic and Boltzmann pictures, and highlight the significance of the "diabatic" contribution that might lead to a counter-stirring effect.

Maya Chuchem; Thomas Dittrich; Doron Cohen

2012-04-02T23:59:59.000Z

87

E-Print Network 3.0 - adiabatic quantum algorithms Sample Search...  

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

Physics ; Materials Science 9 Motivation: Maximum Independent Set(MIS) Problem vs Ising Problem Basics AQC Minor-embedding Introduction to Adiabatic Quantum Computation...

88

E-Print Network 3.0 - adiabatic evolution algorithm Sample Search...  

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

and Information Sciences 12 Motivation: Maximum Independent Set(MIS) Problem vs Ising Problem Basics AQC Minor-embedding Introduction to Adiabatic Quantum Computation...

89

E-Print Network 3.0 - adiabatic quantum optimization Sample Search...  

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

Collection: Mathematics 10 Motivation: Maximum Independent Set(MIS) Problem vs Ising Problem Basics AQC Minor-embedding Introduction to Adiabatic Quantum Computation...

90

E-Print Network 3.0 - adiabatic-rectangular pulse train Sample...  

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

rectangular pulse train Search Powered by Explorit Topic List Advanced Search Sample search results for: adiabatic-rectangular pulse train Page: << < 1 2 3 4 5 > >> 1 IEEE...

91

E-Print Network 3.0 - adiabatic burning velocity Sample Search...  

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

adiabatic process changes the temperature of the gas without heating it. 12;DC A steam engine and a Ferrari Source: Winokur, Michael - Department of Physics, University of...

92

E-Print Network 3.0 - adiabatic mass loss Sample Search Results  

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

Moisture Something about Water Summary: and Diabatic Adiabatic means occurring without loss or gain of heat. Diabatic means occurring... forms. 9% increase in volume. Density...

93

Theorem on the existence of a nonzero energy gap in adiabatic quantum computation  

E-Print Network (OSTI)

Adiabatic quantum computation, based on the adiabatic theorem, is a promising alternative to conventional quantum computation. The validity of an adiabatic algorithm depends on the existence of a nonzero energy gap between the ground and excited states. However, it is difficult to ascertain the exact value of the energy gap. In this paper, we put forward a theorem on the existence of nonzero energy gap for the Hamiltonians used in adiabatic quantum computation. It can help to effectively identify a large class of the Hamiltonians without energy-level crossing between the ground and excited states.

Da-Jian Zhang; Xiao-Dong Yu; D. M. Tong

2014-10-14T23:59:59.000Z

94

Cooling by adiabatic magnetization of a degenerate semiconductor in the ultra-quantum region  

Science Journals Connector (OSTI)

The possibility of using the adiabatic magnetization of a degenerate semiconductor in the ultra-quantum region for producing temperatures below 100 mK is examined.

J. -P. Jay-Gerin; A. Briggs

1981-11-01T23:59:59.000Z

95

E-Print Network 3.0 - adiabatic changing refractive Sample Search...  

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

Physics, University of Wisconsin at Madison Collection: Physics 14 Nanoconcentration of terahertz radiation in plasmonic waveguides Summary: (adiabatically) tapered off as a...

96

E-Print Network 3.0 - adiabatic clock generators Sample Search...  

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

logic (PAL) that operates from a single power-clock supply and outper- forms... a new pass-transistor CMOS adiabatic logic (PAL) that requires only one sinusoidal ......

97

Reasoning about record matching rules  

Science Journals Connector (OSTI)

To accurately match records it is often necessary to utilize the semantics of the data. Functional dependencies (FDs) have proven useful in identifying tuples in a clean relation, based on the semantics of the data. For all the reasons that FDs and their ...

Wenfei Fan; Xibei Jia; Jianzhong Li; Shuai Ma

2009-08-01T23:59:59.000Z

98

WEB-BASED AFFILIATION MATCHING (Research Paper)  

E-Print Network (OSTI)

WEB-BASED AFFILIATION MATCHING (Research Paper) David Aumueller, Erhard Rahm University of Leipzig or not they match. For affiliation matching we investigate web based similarity measures utilizing the cognitive in the result sets of affiliation web searches overlap. We evaluate the effectiveness of affiliation matching

Schüler, Axel

99

AB INITIO SIMULATIONS FOR MATERIAL PROPERTIES ALONG THE JUPITER ADIABAT  

SciTech Connect

We determine basic thermodynamic and transport properties of hydrogen-helium-water mixtures for the extreme conditions along Jupiter's adiabat via ab initio simulations, which are compiled in an accurate and consistent data set. In particular, we calculate the electrical and thermal conductivity, the shear and longitudinal viscosity, and diffusion coefficients of the nuclei. We present results for associated quantities like the magnetic and thermal diffusivity and the kinematic shear viscosity along an adiabat that is taken from a state-of-the-art interior structure model. Furthermore, the heat capacities, the thermal expansion coefficient, the isothermal compressibility, the Grueneisen parameter, and the speed of sound are calculated. We find that the onset of dissociation and ionization of hydrogen at about 0.9 Jupiter radii marks a region where the material properties change drastically. In the deep interior, where the electrons are degenerate, many of the material properties remain relatively constant. Our ab initio data will serve as a robust foundation for applications that require accurate knowledge of the material properties in Jupiter's interior, e.g., models for the dynamo generation.

French, Martin; Becker, Andreas; Lorenzen, Winfried; Nettelmann, Nadine; Bethkenhagen, Mandy; Redmer, Ronald [Institut fuer Physik, Universitaet Rostock, D-18051 Rostock (Germany); Wicht, Johannes [Max-Planck-Institut fuer Sonnensystemforschung, D-37191 Katlenburg-Lindau (Germany)

2012-09-15T23:59:59.000Z

100

Linear response of galactic halos to adiabatic gravitational perturbations  

E-Print Network (OSTI)

We determine the response of a self-similar isothermal stellar system to small adiabatic gravitational perturbations. For odd spherical harmonics, the response is identical to the response of the analogous isothermal fluid system. For even spherical harmonics, the response can be regarded as an infinite series of wavetrains in $\\log r$, implying alternating compression and rarefaction in equal logarithmic radius intervals. Partly because of the oscillatory nature of the solutions, tidal fields from external sources are not strongly amplified by an intervening isothermal stellar system, except at radii $\\lta 10^{-3.5}$ times the satellite radius; at some radii the stellar system can even screen the external tidal field in a manner analogous to Debye screening. As Weinberg has pointed out, individual resonances in a stellar system can strongly amplify external tidal fields over a limited radial range, but we cannot address this possibility because we examine only adiabatic perturbations. We also discuss the application of our method to the halo response caused by the slow growth of an embedded thin disk.

Chigurupati Murali; Scott Tremaine

1997-09-14T23:59:59.000Z

Note: This page contains sample records for the topic "adiabatic matching device" 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

Microchannel devices  

SciTech Connect

The fabrication of stainless steel microchannel heat exchangers was examined through microlamination, the process of diffusion bonding precision machined metallic foils. The influence of diffusion bonding parameters, as well as the device geometry on the strength of the bond between the foils and embedded channel integrity, was investigated. During diffusion bonding, high temperatures and/or pressures result in well bonded foils, but these conditions cause the embedded channels to deform, which will degrade the efficiency of fluid flow through the channels. Alternatively, low temperatures and/or pressures result in undeformed channels but weakly bonded foils. This causes failure of the device due to fluid leakage. Thus, a processing envelope exists for producing a sound device with no fluid leakage and no degradation of fluid flow properties. The theoretical limit on aspect ratio within two-fluid counter-flow microchannel heat exchangers was also investigated. A counter-flow device is comprised of alternating layers of microchannels, which allow the two fluids to flow in opposite directions separated by fins. A theoretical model for interpreting the span of the fin as a function of the fin thickness was established. The model was verified experimentally by fabricating specimens to simulate the counter-flow device. The results of these investigations were used to aid in the design and processing of prototype microchannel devices.

Alman, David E.; Wilson, Rick D.

2001-09-01T23:59:59.000Z

102

Surface tension effects on adiabatic gasliquid flow across micro pillars Santosh Krishnamurthy, Yoav Peles *  

E-Print Network (OSTI)

Surface tension effects on adiabatic gas­liquid flow across micro pillars Santosh Krishnamurthy s t r a c t The effect of surface tension on adiabatic two-phase flow across a bank of 100 lm diameter was developed to account for surface tension force. In addition, a modified form of Chisholm correlation

Peles, Yoav

103

What lies between a free adiabatic expansion and a quasi-static one?  

E-Print Network (OSTI)

An expression is found that relates the initial and final volumes and temperatures for any adiabatic process. It is given in terms of a parameter r that smoothly interpolates between a free adiabatic expansion (r = 0) and a quasi-static one (r = 1). The parameter has to be evaluated numerically, but an approximate expression is given.

E. N. Miranda

2012-09-26T23:59:59.000Z

104

Coupled-Channels Quantum Theory of Electronic Flux Density in Electronically Adiabatic Processes: Fundamentals  

Science Journals Connector (OSTI)

Coupled-Channels Quantum Theory of Electronic Flux Density in Electronically Adiabatic Processes: Fundamentals ... One’s understanding of the mechanism of this fundamental reaction, as well as those of other arguably more important electronically adiabatic processes, should be significantly advanced by a knowledge of the electronic flux density (je). ...

D. J. Diestler

2011-11-21T23:59:59.000Z

105

Steady-state domain wall motion driven by adiabatic spin-transfer torque with assistance of microwave field  

SciTech Connect

We have studied the current-induced displacement of a 180° Bloch wall by means of micromagnetic simulation and analytical approach. It is found that the adiabatic spin-transfer torque can sustain a steady-state domain wall (DW) motion in the direction opposite to that of the electron flow without Walker Breakdown when a transverse microwave field is applied. This kind of motion is very sensitive to the microwave frequency and can be resonantly enhanced by exciting the domain wall thickness oscillation mode. A one-dimensional analytical model was established to account for the microwave-assisted wall motion. These findings may be helpful for reducing the critical spin-polarized current density and designing DW-based spintronic devices.

Wang, Xi-guang; Guo, Guang-hua, E-mail: guogh@mail.csu.edu.cn; Nie, Yao-zhuang; Xia, Qing-lin; Tang, Wei [School of Physics and Electronics, Central South University, Changsha 410083 (China)] [School of Physics and Electronics, Central South University, Changsha 410083 (China); Wang, D. [Department of Physics, National University of Defense Technology, Changsha 410073 (China)] [Department of Physics, National University of Defense Technology, Changsha 410073 (China); Zeng, Zhong-ming [Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123 (China)] [Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123 (China)

2013-12-23T23:59:59.000Z

106

Quantum adiabatic computation with a constant gap is not useful in one dimension  

SciTech Connect

We show that it is possible to use a classical computer to efficiently simulate the adiabatic evolution of a quantum system in one dimension with a constant spectral gap, starting the adiabatic evolution from a known initial product state. The proof relies on a recently proven area law for such systems, implying the existence of a good matrix product representation of the ground state, combined with an appropriate algorithm to update the matrix product state as the Hamiltonian is changed. This implies that adiabatic evolution with such Hamiltonians is not useful for universal quantum computation. Therefore, adiabatic algorithms which are useful for universal quantum computation either require a spectral gap tending to zero or need to be implemented in more than one dimension (we leave open the question of the computational power of adiabatic simulation with a constant gap in more than one dimension).

Hastings, Matthew [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

107

Method and system for reducing device performance degradation of organic devices  

DOE Patents (OSTI)

Methods and systems for reducing the deleterious effects of gate bias stress on the drain current of an organic device, such as an organic thin film transistor, are provided. In a particular aspect, the organic layer of an organic device is illuminated with light having characteristics selected to reduce the gate bias voltage effects on the drain current of the organic device. For instance, the wavelength and intensity of the light are selected to provide a desired recovery of drain current of the organic device. If the characteristics of the light are appropriately matched to the organic device, recovery of the deleterious effects caused by gate bias voltage stress effects on the drain current of the organic device can be achieved. In a particular aspect, the organic device is selectively illuminated with light to operate the organic device in multiple modes of operation.

Teague, Lucile C.

2014-09-02T23:59:59.000Z

108

Non-adiabatic perturbations in decaying vacuum cosmology  

SciTech Connect

We investigate a spatially flat Friedmann-Lemaître-Robertson-Walker cosmology in which a decaying vacuum term causes matter production at late times. Assuming a decay proportional to the Hubble rate, the ratio of the background energy densities of dark matter and dark energy changes with the cosmic scale factor as a{sup ?3/2}. The intrinsically non-adiabatic two-component perturbation dynamics of this model is reduced to a single second-order equation. Perturbations of the vacuum term are shown to be negligible on scales that are relevant for structure formation. On larger scales, dark-energy perturbations give a somewhat higher contribution but remain always smaller than the dark-matter perturbations.

Zimdahl, W.; Fabris, J.C. [Departamento de Física, Universidade Federal do Espírito Santo, Vitória, ES (Brazil); Borges, H.A.; Carneiro, S. [Instituto de Física, Universidade Federal da Bahia, Salvador, BA (Brazil); Hipólito-Ricaldi, W.S., E-mail: winfried.zimdahl@pq.cnpq.br, E-mail: humberto@ufba.br, E-mail: saulo.carneiro@pq.cnpq.br, E-mail: fabris@pq.cnpq.br, E-mail: whipolito@gmail.com [Departamento de Ciências Matemáticas e Naturais, UFES, São Mateus, ES (Brazil)

2011-04-01T23:59:59.000Z

109

Adiabatic Dynamics of Edge Waves in Photonic Graphene  

E-Print Network (OSTI)

The propagation of localized edge modes in photonic honeycomb lattices, formed from an array of adiabatically varying periodic helical waveguides, is considered. Asymptotic analysis leads to an explicit description of the underlying dynamics. Depending on parameters, edge states can exist over an entire period or only part of a period; in the latter case an edge mode can effectively disintegrate and scatter into the bulk. In the presence of nonlinearity, a `time'-dependent one-dimensional nonlinear Schr\\"odinger (NLS) equation describes the envelope dynamics of edge modes. When the average of the `time varying' coefficients yields a focusing NLS equation, soliton propagation is exhibited. For both linear and nonlinear systems, certain long lived traveling modes with minimal backscattering are found; they exhibit properties of topologically protected states.

Ablowitz, M J; Ma, Y -P

2014-01-01T23:59:59.000Z

110

Pitch-angle scattering of energetic particles with adiabatic focusing  

E-Print Network (OSTI)

Understanding turbulent transport of charged particles in magnetized plasmas often requires a model for the description of random variations in the particle's pitch angle. The Fokker-Planck coefficient of pitch-angle scattering, which is used to describe scattering parallel to the mean magnetic field, is therefore of central importance. Whereas quasi-linear theory assumes a homogeneous mean magnetic field, such a condition is often not fulfilled, especially for high-energy particles. Here, a new derivation of the quasi-linear approach is given that is based on the unperturbed orbit found for an adiabatically focused mean magnetic field. The results show that, depending on the ratio of the focusing length and the particle's Larmor radius, the Fokker-Planck coefficient is significantly modified but agrees with the classical expression in the limit of a homogeneous mean magnetic field.

Tautz, R C; Dosch, A

2014-01-01T23:59:59.000Z

111

Adiabatic Pumping of Chern-Simons Axion Coupling  

E-Print Network (OSTI)

We study the adiabatic pumping of the Chern-Simons axion (CSA) coupling along a parametric loop characterized by a non-zero second Chern number $C^{(2)}$ from the viewpoint of the hybrid Wannier representation, in which the Wannier charge centers (WCCs) are visualized as sheets defined over a projected 2D Brillouin zone. We derive a new formula for the CSA coupling, expressing it as an integral involving Berry curvatures and potentials defined on the WCC sheets. We show that a loop characterized by a non-zero $C^{(2)}$ requires a series of sheet-touching events at which $2\\pi$ quanta of Berry curvature are passed from sheet to sheet, in such a way that $e^2/h$ units of CSA coupling are pumped by a lattice vector by the end of the cycle. We illustrate these behaviors via explicit calculations on a model tight-binding Hamiltonian and discuss their implications.

Maryam Taherinejad; David Vanderbilt

2014-11-06T23:59:59.000Z

112

Observational tests of non-adiabatic Chaplygin gas  

E-Print Network (OSTI)

In a previous paper it was shown that any dark sector model can be mapped into a non-adiabatic fluid formed by two interacting components, one with zero pressure and the other with equation-of-state parameter $\\omega = -1$. It was also shown that the latter does not cluster and, hence, the former is identified as the observed clustering matter. This guarantees that the dark matter power spectrum does not suffer from oscillations or instabilities. It applies in particular to the generalised Chaplygin gas, which was shown to be equivalent to interacting models at both background and perturbation levels. In the present paper we test the non-adiabatic Chaplygin gas against the Hubble diagram of type Ia supernovae, the position of the first acoustic peak in the anisotropy spectrum of the cosmic microwave background and the linear power spectrum of large scale structures. We consider two different samples of SNe Ia, namely the Constitution and SDSS compilations, both calibrated with the MLCS2k2 fitter, and for the power spectrum we use the 2dFGRS catalogue. The model parameters to be adjusted are the present Hubble parameter, the present matter density and the Chaplygin gas parameter $\\alpha$. The joint analysis best fit gives $\\alpha \\approx - 0.5$, which corresponds to a constant-rate energy flux from dark energy to dark matter, with the dark energy density decaying linearly with the Hubble parameter. The $\\Lambda$CDM model, equivalent to $\\alpha = 0$, stands outside the $3\\sigma$ confidence interval. This result is still valid if we use, as supernovae samples, the SDSS and Union2.1 compilations calibrated with the SALT2 fitter.

S. Carneiro; C. Pigozzo

2014-10-16T23:59:59.000Z

113

Matching Gifts Fund | ornl.gov  

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

Matching Gifts Form Matching Gifts Form News Home | ORNL | News | Communications | Community Outreach | Matching Gifts Fund SHARE Matching Gifts Fund The Program Each year, UT-Battelle employees generously give their time and talents to a variety of community organizations. The Matching Gifts Program is designed to further encourage employees to support local nonprofit organizations with personal financial donations. Who is Eligible to Participate? The Matching Gifts Fund is open to current UT-Battelle employees with a minimum of one year of service and will provide a minimum match of $50 and a maximum match of $250 per employee. Retirees, subcontractors, and vendors are not eligible to participate. Eligible Gifts Donations to organizations in the categories below may be eligible for

114

Detection device  

DOE Patents (OSTI)

The present invention is directed to a detection device comprising: (1) an entrance chamber, (2) a central chamber, and (3) an exit chamber. The central chamber includes an ionizing gas, anode, and means for connecting the anode with an external power supply and pulse counter.

Smith, Jay E. (Pittsburgh, PA)

1984-01-01T23:59:59.000Z

115

Resistance after firing protected electric match  

DOE Patents (OSTI)

An electric match having electrical leads embedded in flame-producing compound is protected against an accidental resistance across the leads after firing by a length of heat-shrinkable tubing encircling the match body and having a skirt portion extending beyond the leads. The heat of the burning match and an adjacent thermal battery causes the tubing to fold over the end of the match body, covering the ends of the leads and protecting them from molten pieces of the battery.

Montoya, Arsenio P. (Albuquerque, NM)

1981-11-10T23:59:59.000Z

116

Ontology matching system for future energy smart grids  

Science Journals Connector (OSTI)

Abstract Future power systems (commonly referred to as Smart Grids) will be managed by numerous intelligent electronic devices. These devices will have to interoperate; that is, they will need to exchange data with each other in order to co-operate over complex control tasks. Interoperability will only be achieved when Smart Grid devices share common semantics on the data they exchange. Standardization bodies have created standard data models defining these common semantics, but a unified standard data model has not been created for all Smart Grids. Consequently, in order to achieve interoperability in this domain, it is mandatory to find semantic correspondences (alignments) between different standard data models. Creating equivalent ontologies from the standard data models facilitates this task, because ontologies provide powerful reasoning services that can be used for automating ontology aligning. The majority of ontology matchers proposed in the state of the art, however, are only able to find simple equivalences of terms, while most alignments in Smart Grids are complex correspondences involving more than two terms. This paper presents an innovative ontology matching system that finds complex correspondences by processing expert knowledge from external domain ontologies and by using novel matching methods. The tests carried out in this study were based on the main interoperability issue within Smart Grids: interactions between CIM and SCL data models. In such tests, the proposed system outperformed one of the best ontology matchers according to the Ontology Alignment Evaluation Initiative (OAEI).

R. Santodomingo; S. Rohjans; M. Uslar; J.A. Rodríguez-Mondéjar; M.A. Sanz-Bobi

2014-01-01T23:59:59.000Z

117

Laser device  

DOE Patents (OSTI)

A laser device includes a virtual source configured to aim laser energy that originates from a true source. The virtual source has a vertical rotational axis during vertical motion of the virtual source and the vertical axis passes through an exit point from which the laser energy emanates independent of virtual source position. The emanating laser energy is collinear with an orientation line. The laser device includes a virtual source manipulation mechanism that positions the virtual source. The manipulation mechanism has a center of lateral pivot approximately coincident with a lateral index and a center of vertical pivot approximately coincident with a vertical index. The vertical index and lateral index intersect at an index origin. The virtual source and manipulation mechanism auto align the orientation line through the index origin during virtual source motion.

Scott, Jill R. (Idaho Falls, ID); Tremblay, Paul L. (Idaho Falls, ID)

2008-08-19T23:59:59.000Z

118

Comparison of Born-Oppenheimer and hyperspherical adiabatic approximations in the trinucleon problem  

Science Journals Connector (OSTI)

Ground state energies of the three-nucleon system interacting via standard S-projected potentials are studied using Born-Oppenheimer and hyperspherical adiabatic approximations. The extreme and the uncoupled hyperspherical adiabatic approximations, which are the lower and upper bounds for the exact ground state energy, are found to define a narrow band with the Born-Oppenheimer approximation lying close to it. While the hyperspherical adiabatic approximation conserves the basic symmetry requirements, the other does not. In spite of this, the Born-Oppenheimer approximation is found to be comparable to the other for potentials with a soft core repulsion.

T. K. Das; H. T. Coelho; V. P. Brito

1993-11-01T23:59:59.000Z

119

Mobile Device Guide Google Android based devices  

E-Print Network (OSTI)

Mobile Device Guide ­ Google Android based devices CSUF Date Last Revised: 1/20/11 Page 1 of 3;Mobile Device Guide ­ Google Android based devices CSUF Date Last Revised: 1/20/11 Page 2 of 3 2. Under' with your campus username and enter your password (case sensitive). 4. Tap `next'. #12;Mobile Device Guide

de Lijser, Peter

120

Resonantly phase-matched Josephson junction traveling wave parametric amplifier  

E-Print Network (OSTI)

We develop a technique to overcome phase-mismatch in Josephson-junction traveling wave parametric amplifiers in order to achieve high gain over a broad bandwidth. Using "resonant phase matching," we design a compact superconducting device consisting of a transmission line with subwavelength resonant inclusions that simultaneously achieves a gain of 20 dB, an instantaneous bandwidth of 3 GHz, and a saturation power of -98 dBm. Such an amplifier is well-suited to cryogenic broadband microwave measurements such as the multiplexed readout of quantum coherent circuits based on superconducting, semiconducting, or nano-mechanical elements as well as traditional astronomical detectors.

Kevin O'Brien; Chris Macklin; Irfan Siddiqi; Xiang Zhang

2014-06-09T23:59:59.000Z

Note: This page contains sample records for the topic "adiabatic matching device" 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

E-Print Network 3.0 - adiabatic temperature change Sample Search...  

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

adiabatic process changes the temperature of the gas without heating it. 12;DC A steam engine and a Ferrari... a phase change. Specific heat c of a substance is the energy...

122

E-Print Network 3.0 - adiabatic in-situ combustion Sample Search...  

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

Paul D. Ronney Summary: , corresponding to low Re, H can be negative, indicating self-sustaining combustion at highly sub-adiabatic... 1 Gas-phase and catalytic combustion in...

123

Analytical Investigation of Glaciation Time in Mixed-Phase Adiabatic Cloud Volumes  

Science Journals Connector (OSTI)

Glaciation in mixed-phase adiabatic cloudy parcels is investigated analytically using two new equations: the equation for coexistence of liquid water and ice and the mass balance equation. The analysis of glaciation time is performed for a ...

M. Pinsky; A. Khain; A. Korolev

2014-11-01T23:59:59.000Z

124

Born-Oppenheimer and hyperspherical adiabatic approximations in the nuclear- and molecular-mass limits  

Science Journals Connector (OSTI)

Ground-state energies of a three-particle system composed of a distinct and two equal-mass particles interacting via localS-wave potentials is studied using Born-Oppenheimer and hyperspherical adiabatic approxima...

Sadhan K. Adhikari; V. P. Brito; H. T. Coelho; T. K. Das

1992-01-01T23:59:59.000Z

125

Non-adiabatic flamelet modeling for combustion processes of oxy-natural gas flame  

Science Journals Connector (OSTI)

In order to realistically predict the combustion characteristics of the oxy-fuel flame, the present study employs the non-adiabatic flamelet approach. In this combustion model, the detailed equilibrium chemist...

Gunhong Kim; Yongmo Kim

2005-09-01T23:59:59.000Z

126

Electrochromic device  

DOE Patents (OSTI)

An electrochromic device includes a first substrate spaced from a second substrate. A first conductive member is formed over at least a portion of the first substrate. A first electrochromic material is formed over at least a portion of the first conductive member. The first electrochromic material includes an organic material. A second conductive member is formed over at least a portion of the second substrate. A second electrochromic material is formed over at least a portion of the second conductive member. The second electrochromic material includes an inorganic material. An ionic liquid is positioned between the first electrochromic material and the second electrochromic material.

Schwendemanm, Irina G. (Wexford, PA); Polcyn, Adam D. (Pittsburgh, PA); Finley, James J. (Pittsburgh, PA); Boykin, Cheri M. (Kingsport, TN); Knowles, Julianna M. (Apollo, PA)

2011-03-15T23:59:59.000Z

127

OLED devices  

DOE Patents (OSTI)

An OLED device having an emission layer formed of an ambipolar phosphine oxide host material and a dopant, a hole transport layer in electrical communication with an anode, an electron transport layer in communication with a cathode, wherein the HOMO energy of the hole transport layer is substantially the same as the HOMO energy of the ambipolar host in the emission layer, and the LUMO energy of the electron transport layer is substantially the same as the LUMO energy of the ambipolar host in the emission layer.

Sapochak, Linda Susan [Arlington, VA; Burrows, Paul Edward [Kennewick, WA; Bimalchandra, Asanga [Richland, WA

2011-02-22T23:59:59.000Z

128

Diversionary device  

DOE Patents (OSTI)

A diversionary device has a housing having at least one opening and containing a non-explosive propellant and a quantity of fine powder packed within the housing, with the powder being located between the propellant and the opening. When the propellant is activated, it has sufficient energy to propel the powder through the opening to produce a cloud of powder outside the housing. An igniter is also provided for igniting the cloud of powder to create a diversionary flash and bang, but at a low enough pressure to avoid injuring nearby people.

Grubelich, Mark C. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

129

HIV/Cancer DB Match Document  

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

COLLECTION AND VERIFICATION OF DATA FOR MATCHED RECORDS FROM US CANCER AND HIVAIDS REGISTRIES Janice Watkins, Oak Ridge Associated Universities, T. Borges, Robert Stafford, Oak...

130

Data hiding using run length matching  

Science Journals Connector (OSTI)

This paper proposes two data hiding methods based on run length matching encoding. All of the proposed methods use the location of accumulated run length values where it compares the run length of the cover data with that of the secret data. The run length matching (RLM) method uses the run length table, which is constructed from the cover data and secret data. The reduced run length matching (RRLM) method calculates the difference value before making the run length encoding table. The experimental results demonstrate that RLM and RRLM have their own strengths with respect to different types of data and run length encoding value matching.

Ki-Hyun Jung; Kee-Young Yoo

2009-01-01T23:59:59.000Z

131

Prospective Trial of a Pediatric Ventricular Assist Device  

Science Journals Connector (OSTI)

...weaning from the device, and removal of the device (without death within 30 days after device removal). For both groups, children who had not yet had any of these specific outcome events were classified as being alive and receiving support with the device. Additional data were collected for the ventricular... In a single-group trial, 48 children with severe heart failure received a ventricular assist device designed for children. Survival rates were significantly higher in this group than among propensity-score–matched children receiving support with extracorporeal membrane oxygenation.

Fraser C.D.; Jaquiss R.D.B.; Rosenthal D.N.

2012-08-09T23:59:59.000Z

132

Training a Binary Classifier with the Quantum Adiabatic Algorithm  

E-Print Network (OSTI)

This paper describes how to make the problem of binary classification amenable to quantum computing. A formulation is employed in which the binary classifier is constructed as a thresholded linear superposition of a set of weak classifiers. The weights in the superposition are optimized in a learning process that strives to minimize the training error as well as the number of weak classifiers used. No efficient solution to this problem is known. To bring it into a format that allows the application of adiabatic quantum computing (AQC), we first show that the bit-precision with which the weights need to be represented only grows logarithmically with the ratio of the number of training examples to the number of weak classifiers. This allows to effectively formulate the training process as a binary optimization problem. Solving it with heuristic solvers such as tabu search, we find that the resulting classifier outperforms a widely used state-of-the-art method, AdaBoost, on a variety of benchmark problems. Moreover, we discovered the interesting fact that bit-constrained learning machines often exhibit lower generalization error rates. Changing the loss function that measures the training error from 0-1 loss to least squares maps the training to quadratic unconstrained binary optimization. This corresponds to the format required by D-Wave's implementation of AQC. Simulations with heuristic solvers again yield results better than those obtained with boosting approaches. Since the resulting quadratic binary program is NP-hard, additional gains can be expected from applying the actual quantum processor.

Hartmut Neven; Vasil S. Denchev; Geordie Rose; William G. Macready

2008-11-04T23:59:59.000Z

133

Kohn anomalies and non-adiabaticity in doped carbon nanotubes  

E-Print Network (OSTI)

The high-frequency Raman-active phonon modes of metallic single-walled carbon nanotubes (SWNTs) are thought to be characterized by Kohn anomalies (KAs), which are expected to be modified by the doping-induced tuning of the Fermi energy level $\\epsilon_F$, obtained through the intercalation of SWNTs with alkali atoms or by the application of a gate potential. We present a Density-Functional Theory (DFT) study of the phonon properties of a (9,9) metallic SWNT as a function of electronic doping. For such study, we use, as in standard DFT calculations of vibrational properties, the Born-Oppenheimer (BO) approximation. We also develop an analytical model capable of reproducing and interpreting our DFT results. Both DFT calculations and this model predict, for increasing doping levels, a series of EPC-induced KAs in the vibrational mode parallel to the tube axis at the $\\mathbf\\Gamma$ point of the Brillouin zone, usually indicated in Raman spectroscopy as the $G^-$ peak. Such KAs would arise each time a new conduction band is populated. However, we show that they are an artifact of the BO approximation. The inclusion of non-adiabatic (NA) effects dramatically affects the results, predicting KAs at $\\mathbf\\Gamma$ only when $\\epsilon_F$ is close to a band crossing $E_{X}$. For each band crossing a double KA occurs for $\\epsilon_F=E_{X}\\pm \\hbar\\omega/2$, where $\\hbar\\omega$ is the phonon energy. In particular, for a 1.2 $nm$ metallic nanotube, we predict a KA to occur in the so-called $G^-$ peak at a doping level of about $N_{el}/C=\\pm 0.0015$ atom ($\\epsilon_F\\approx \\pm 0.1 ~eV$). Furthermore, we predict that the Raman linewidth of the $G^-$ peak significantly decreases for $|\\epsilon_F| \\geq \\hbar\\omega/2$.

Nicolas Caudal; A. Marco Saitta; Michele Lazzeri; Francesco Mauri

2007-02-21T23:59:59.000Z

134

Optoelectronic device  

DOE Patents (OSTI)

The invention is an optoelectronic device comprising an active portion which converts light to electricity or converts electricity to light, the active portion having a front side for the transmittal of the light and a back side opposite from the front side, at least two electrical leads to the active portion to convey electricity to or from the active portion, an enclosure surrounding the active portion and through which the at least two electrical leads pass wherein the hermetically sealed enclosure comprises at the front side of the active portion a barrier material which allows for transmittal of light, one or more getter materials disposed so as to not impede the transmission of light to or from the active portion, and a contiguous gap pathway to the getter material which pathway is disposed between the active portion and the barrier material.

Bonekamp, Jeffrey E.; Boven, Michelle L.; Gaston, Ryan S.

2014-09-09T23:59:59.000Z

135

Adiabatic many-body state preparation and information transfer in quantum dot arrays  

E-Print Network (OSTI)

Quantum simulation of many-body systems are one of the most interesting tasks of quantum technology. Among them is the preparation of a many-body system in its ground state when the vanishing energy gap makes the cooling mechanisms ineffective. Adiabatic theorem, as an alternative to cooling, can be exploited for driving the many-body system to its ground state. In this paper, we study two most common disorders in quantum dot arrays, namely exchange coupling fluctuations and hyperfine interaction, in adiabatically preparation of ground state in such systems. We show that the adiabatic ground state preparation is highly robust against those disorder effects making it good analog simulator. Moreover, we also study the adiabatic classical information transfer, using singlet-triplet states, across a spin chain. In contrast to ground state preparation the transfer mechanism is highly affected by disorder and in particular, the hyperfine interaction is very destructive for the performance. This suggests that for communication tasks across such arrays adiabatic evolution is not as effective and quantum quenches could be preferable.

Umer Farooq; Abolfazl Bayat; Stefano Mancini; Sougato Bose

2014-11-05T23:59:59.000Z

136

Proposal for a second-generation, lattice matched, multiple junction Ga{sub 2}AsSb TPV converter  

SciTech Connect

First order device modeling is used to show that spontaneously ordered Ga{sub 2}AsSb may prove useful in the newly-active field of thermophotovoltaic power generation. Optimal band gaps for single-, double- and triple-junction III-V devices are presented for a range of blackbody emitter temperatures (1000--2000 K), and it is shown that monolithic, current-matched devices may be constructed that are lattice-matched throughout the stack to an underlying InP substrate. Device efficiency, short-circuit current, fill factor, and open-circuit voltage calculations are presented. The power generation capabilities are expected to be substantial due to the proximity of the devices to the thermal radiators. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

Horner, G.S. [Keithley Instruments, Solon Ohio (United States); Coutts, T.J.; Wanlass, M.W. [National Renewable Energy Laboratory, Golden Colorado (United States)

1995-01-05T23:59:59.000Z

137

Connector device for building integrated photovoltaic device  

SciTech Connect

The present invention is premised upon a connector device and method that can more easily electrically connect a plurality of PV devices or photovoltaic system components and/or locate these devices/components upon a building structure. It also may optionally provide some additional sub-components (e.g. at least one bypass diode and/or an indicator means) and may enhance the serviceability of the device.

Keenihan, James R.; Langmaid, Joseph A.; Eurich, Gerald K.; Lesniak, Michael J.; Mazor, Michael H.; Cleereman, Robert J.; Gaston, Ryan S.

2014-06-03T23:59:59.000Z

138

MATCH Program (North Dakota) | Department of Energy  

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

MATCH Program (North Dakota) MATCH Program (North Dakota) MATCH Program (North Dakota) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State North Dakota Program Type Loan Program The MATCH Program supports the funding needs of a borrower whose financial capacity is very strong. The borrower must have a long-term credit rating

139

Automated change detection with area matching  

Science Journals Connector (OSTI)

When resurveying a geographic area of the seafloor during sidescan change detection operations an automated method to match bottom objects imaged previously with objects imaged in the resurvey can increase efficiency and accuracy. The geographic position of a new object relative to a historical object is a good indicator of a match. However due to position error within either survey there may be more than one spatially?close object in the new imagery. To complicate matters further the reflected energy from the new object may be significantly different given a different incidence angle in the resurvey or the partial burial of the object. In addition the resurveyed object image may be below the threshold set for automatic recognition and falsely eliminated. This presentation will address these problems and suggest possible methods for matching “constellations” of bottom objects by Dijkstra's minimum cost ? maximum flow algorithm control point matching and the data?association procedure.

John Dubberley; Marlin Gendron; Maura Lohrenz

2008-01-01T23:59:59.000Z

140

Engineered Phase-Matching for Quantum Photonics  

Science Journals Connector (OSTI)

We demonstrate Gaussian-shaped quasi-phase matching of a nonlinear optical crystal via custom duty-cycle modulation on its grating structure. Our analysis shows this crystal can...

Dixon, P Ben; Shapiro, Jeffrey H; Wong, Franco N

Note: This page contains sample records for the topic "adiabatic matching device" 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

The Dynamics of Entanglement in the Adiabatic Search and Deutsch Algorithms  

E-Print Network (OSTI)

The goal of this paper is to study the effect of entanglement on the running time of a quantum computation. Adiabatic quantum computation is suited to this kind of study, since it allows us to explicitly calculate the time evolution of the entanglement throughout the calculation. On the other hand however, the adiabatic formalism makes it impossible to study the roles of entanglement and fidelity separately, which means that results have to be interpreted carefully. We study two algorithms: the search algorithm and the Deutsch-Jozsa algorithm. We find some evidence that entanglement can be considered a resource in quantum computation.

K. Choy; G. Passante; D. Ahrensmeier; M. E. Carrington; T. Fugleberg; R. Kobes; G. Kunstatter

2006-05-03T23:59:59.000Z

142

Piecewise Adiabatic Population Transfer in a Molecule via a Wave Packet  

SciTech Connect

We propose a class of schemes for robust population transfer between quantum states that utilize trains of coherent pulses, thus forming a generalized adiabatic passage via a wave packet. We study piecewise stimulated Raman adiabatic passage with pulse-to-pulse amplitude variation, and piecewise chirped Raman passage with pulse-to-pulse phase variation, implemented with an optical frequency comb. In the context of production of ultracold ground-state molecules, we show that with almost no knowledge of the excited potential, robust high-efficiency transfer is possible.

Shapiro, Evgeny A. [Department of Chemistry, University of British Columbia, Vancouver, V6T 1Z2 (Canada); Peer, Avi; Ye Jun [JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440 (United States); Shapiro, Moshe [Department of Chemistry, University of British Columbia, Vancouver, V6T 1Z2 (Canada); Department of Physics, University of British Columbia, Vancouver, V6T 1Z2 (Canada); Department of Chemical Physics, Weizmann Institute, Rehovot, 76100 (Israel)

2008-07-11T23:59:59.000Z

143

Radial pulsations of neutron stars: computing alternative polytropic models regarding density and adiabatic index  

E-Print Network (OSTI)

We revisit the problem of radial pulsations of neutron stars by computing four general-relativistic polytropic models, in which "density" and "adiabatic index" are involved with their discrete meanings: (i) "rest-mass density" or (ii) "mass-energy density" regarding the density, and (i) "constant" or (ii) "variable" regarding the adiabatic index. Considering the resulting four discrete combinations, we construct corresponding models and compute for each model the frequencies of the lowest three radial modes. Comparisons with previous results are made. The deviations of respective frequencies of the resolved models seem to exhibit a systematic behavior, an issue discussed here in detail.

Vassilis Geroyannis; Georgios Kleftogiannis

2014-06-14T23:59:59.000Z

144

Game, Set, and Match A Personal Journey  

E-Print Network (OSTI)

be called Lo Shu. . . Or Tic-Tac-Toe! 8 1 6 3 5 7 4 9 2 Carl Lee (UK) Game, Set, and Match KYMAA -- April. . . Or Tic-Tac-Toe! 8 1 6 3 5 7 4 9 2 This was one of my early encounters with the notion of isomorphism (and Coxeter).) Carl Lee (UK) Game, Set, and Match KYMAA -- April 2013 9 / 54 #12;Three Dimensional Tic

Lee, Carl

145

Game matching number of graphs Douglas B. West  

E-Print Network (OSTI)

. Game: Two players, Max and Min, alternately choose edges of a matching, ending with a maximal matching. Max wants it to be large; Min wants it to be small. #12;The Matching Game We want a large matching but can't pick all the edges. Game: Two players, Max and Min, alternately choose edges of a matching

West, Douglas B.

146

Process to Accomplish Autothermal or Steam Reforming Via a Reciprocating Compression Device  

SciTech Connect

The invention provides a method and apparatus for producing a synthesis gas from a variety of hydrocarbons. The apparatus (device) consists of a semi-batch, non-constant volume reactor to generate a synthesis gas. While the apparatus feeds mixtures of air, steam, and hydrocarbons into a cylinder where work is performed on the fluid by a piston to adiabatically raise its temperature without heat transfer from an external source.

Lyons, David K.; James, Robert; Berry, David A.; Gardern, Todd

2004-09-21T23:59:59.000Z

147

Non-adiabatic ab initio molecular dynamics of supersonic beam epitaxy of silicon carbide at room temperature  

E-Print Network (OSTI)

Non-adiabatic ab initio molecular dynamics of supersonic beam epitaxy of silicon carbide at room-adiabatic ab initio molecular dynamics of supersonic beam epitaxy of silicon carbide at room temperature Simone film crystal growth of silicon carbide (SiC), a semiconductor syn- thesized to replace silicon in harsh

Alfè, Dario

148

Pecar P et al 2008 Nanotechnology 19 495401 c 2008 IOP Publishing Ltd Adiabatic pipelining: A key to ternary computing  

E-Print Network (OSTI)

Pecar P et al 2008 Nanotechnology 19 495401 c 2008 IOP Publishing Ltd Adiabatic pipelining: A key serve their faster adoption. PACS numbers: 85.35 Submitted to: Nanotechnology #12;Adiabatic pipelined, that with nanotechnology, which enables the manipulation of materials on the level of atoms, time has come to reconsider

Bajec, Iztok Lebar

149

Direct determination of the adiabatic ionization energy of NO2 as measured by guided ion-beam mass spectrometry  

E-Print Network (OSTI)

Direct determination of the adiabatic ionization energy of NO2 as measured by guided ion-beam mass the past 60 years the value for the ionization energy (IE) of nitrogen dioxide has been measured many times, Utah 84112 (Received 16 April 1992; accepted 4 May 1992) The adiabatic ionization energy (IE) of NOa

Clemmer, David E.

150

Determination of Non{Adiabatic Scattering Wave Functions in a Born{Oppenheimer Model  

E-Print Network (OSTI)

Determination of Non{Adiabatic Scattering Wave Functions in a Born{Oppenheimer Model George A for the time dependent molecular Schrodinger equation in the Born{Oppenheimer limit. We assume the elec- tron. This component is shown to be exponentially small in the square of the Born{Oppenheimer parameter, due

Hagedorn, George A.

151

Determination of Non--Adiabatic Scattering Wave Functions in a Born--Oppenheimer Model  

E-Print Network (OSTI)

Determination of Non--Adiabatic Scattering Wave Functions in a Born--Oppenheimer Model George A molecular SchrË?odinger equation in the Born--Oppenheimer limit. We assume the elec­ tron Hamiltonian has to be exponentially small in the square of the Born--Oppenheimer parameter, due to the Landau­Zener mechanism

152

Adiabatic Decoupling and Time-Dependent Born-Oppenheimer Herbert Spohn and Stefan Teufel  

E-Print Network (OSTI)

Adiabatic Decoupling and Time-Dependent Born-Oppenheimer Theory Herbert Spohn and Stefan Teufel: spohn@ma.tum.de, teufel@ma.tum.de July 9, 2001 Abstract We reconsider the time-dependent Born-Oppenheimer , and heavy nuclei, mass M which depends on the type of nucleus. Born and Oppenheimer [3] wanted to explain

153

Thermal hazard evaluations of 18650 lithium-ion batteries by an adiabatic calorimeter  

Science Journals Connector (OSTI)

In this study, the thermal hazard features of various lithium-ion batteries, such as LiCoO2 and LiFePO4..., were assessed properly by calorimetric techniques. Vent sizing package 2 (VSP2), an adiabatic calorimete...

Tien-Yuan Lu; Chung-Cheng Chiang…

2013-12-01T23:59:59.000Z

154

Non-adiabatic pumping in an oscillating-piston model Maya Chuchem1  

E-Print Network (OSTI)

Non-adiabatic pumping in an oscillating-piston model Maya Chuchem1 , Thomas Dittrich2 , Doron Cohen Universidad Nacional de Colombia PACS ­ Abstract. - We consider the prototypical "piston pump" operating as a generalized Fermi-Ulam model, incorporating a finite-height moving wall (piston) and non trivial topology

Cohen, Doron

155

Macroscopic equations for the adiabatic piston Massimo Cencini,1,2  

E-Print Network (OSTI)

Macroscopic equations for the adiabatic piston Massimo Cencini,1,2 Luigi Palatella,1,3 Simone piston--is discussed in the framework of kinetic theory. We consider the limit of gases whose relaxation time is extremely fast so that the gases contained in the left and right chambers of the piston

Cencini, Massimo

156

Callen's Adiabatic Piston and the Limits of the Second Law of Thermodynamics  

E-Print Network (OSTI)

The limits of the Second Law of Thermodynamics, which reigns undisputed in the macroscopic world, are investigated at the mesoscopic level, corresponding to spatial dimensions of a few microns. An extremely simple isolated system, modeled after Callen's adiabatic piston, [1] can, under appropriate conditions, be described as a self-organizing Brownian motor and shown to exhibit a perpetuum mobile behavior.

Bruno Crosignani; Paolo Di Porto; Claudio Conti

2006-06-08T23:59:59.000Z

157

Non-adiabatic pumping in an oscillating-piston model Maya Chuchem1  

E-Print Network (OSTI)

Non-adiabatic pumping in an oscillating-piston model Maya Chuchem1 , Thomas Dittrich2 , Doron Cohen Universidad Nacional de Colombia We consider the prototypical "piston pump" operating on a ring, where-Ulam model, incorporating a finite-height moving wall (piston) and non trivial topology (ring). The amount

Cohen, Doron

158

Surface Science 425 (1999) 114 Non-adiabatic charge transfer process of oxygen on  

E-Print Network (OSTI)

Surface Science 425 (1999) 1­14 Non-adiabatic charge transfer process of oxygen on metal surfaces November 1998 Abstract The dynamics of charge transfer processes of oxygen on metal surfaces a different charged oxygen species. Empirical universal potential energy functions have been constructed

Zeiri, Yehuda

159

Congressional Black Caucus Foundation, Inc. Meet/Match Procurement...  

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

Congressional Black Caucus Foundation, Inc. MeetMatch Procurement Forum Congressional Black Caucus Foundation, Inc. MeetMatch Procurement Forum Presented by Congresswoman Sheila...

160

Match Pumps to System Requirements | Department of Energy  

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

Match Pumps to System Requirements Match Pumps to System Requirements This tip sheet describes how to correct imbalanced pumping systems and improve system efficiency. PUMPING...

Note: This page contains sample records for the topic "adiabatic matching device" 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

Effect of human-biometric sensor interaction on fingerprint matching performance, image quality and minutiae count  

Science Journals Connector (OSTI)

This study investigated the effect of force levels (3, 5, 7, 9 and 11N) on fingerprint matching performance, image quality scores and minutiae count between optical and capacitance sensors. Three images were collected from the right index fingers of 75 participants for each sensing technology. Descriptive statistics analysis of variance and Kruskal-Wallis non-parametric tests were conducted to assess significant differences in minutiae counts and image quality scores, by force level. The results reveal a significant difference in image quality score by force level and sensor technology in contrast to minutiae count for the capacitance sensor. The image quality score is one of the many factors that influence the system matching performance, yet the removal of low quality images does not improve the system performance at each force level. Further research is needed to identify other manipulatable factors to improve the interaction between a user and device and the subsequent matching performance.

Eric P. Kukula; Christine R. Blomeke; Shimon K. Modi; Stephen J. Elliott

2009-01-01T23:59:59.000Z

162

Farmers Electric Cooperative (Kalona) - Residential Efficiency Matching  

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

Farmers Electric Cooperative (Kalona) - Residential Efficiency Farmers Electric Cooperative (Kalona) - Residential Efficiency Matching Grant Program Farmers Electric Cooperative (Kalona) - Residential Efficiency Matching Grant Program < Back Eligibility Residential Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Cooling Appliances & Electronics Commercial Lighting Lighting Commercial Heating & Cooling Program Info State Iowa Program Type Utility Grant Program Rebate Amount 50% of cost, up to $100 Provider Farmers Electric Cooperative Farmers Electric Cooperative (FEC) offers a grant program which splits the cost of simple energy efficient improvements to the home. The utility will cover 50% of the cost of eligible improvements made by the participating member. Grants are limited to $100 per year. A variety of measures and

163

Common Platform Enumeration: Name Matching Specification  

E-Print Network (OSTI)

the U.S. economy and public welfare by providing technical leadership for the nation's measurement of The MITRE Corporation, Paul Cichonski of NIST, Adam Halbardier of Booz Allen Hamilton, Seth Hanford of Cisco and explains the requirements that IT products must meet for conformance with the CPE Name Matching version 2

164

Faster Compressed Dictionary Matching (extended abstract)  

E-Print Network (OSTI)

The past few years have witnessed several exciting results on compressed represen- tation of a string T that supports e±cient pattern matching, and the space complexity has been reduced to jTjHk(T)+o(jTj log ¾) bits [8, ...

Hon, Wing-Kai; Lam, Tak-Wah; Shah, Rahul; Tam, Siu-Lung; Vitter, Jeffrey Scott

2010-01-01T23:59:59.000Z

165

Compressed Index for Dictionary Matching (extended abstract)  

E-Print Network (OSTI)

The past few years have witnessed several exciting results on compressed represen- tation of a string T that supports e±cient pattern matching, and the space complexity has been reduced to jTjHk(T)+o(jTj log ¾) bits [8, ...

Hon, Wing-Kai; Lam, Tak-Wah; Shah, Rahul; Tam, Siu-Lung; Vitter, Jeffrey Scott

2008-01-01T23:59:59.000Z

166

Putting Context into Schema Matching Philip Bohannon  

E-Print Network (OSTI)

. . . (b) Instance of target book table RT .music id title asin price sale label 80 x&y B0006L16N8 13.29 12 a wide variety of ev- idence that may indicate a match, including similarity of data, sim- ilarity

Fan, Wenfei

167

GEOMETRIC CONSTRAINTS FROM PLANAR SURFACE PATCH MATCHING  

E-Print Network (OSTI)

GEOMETRIC CONSTRAINTS FROM PLANAR SURFACE PATCH MATCHING Robert B. Fisher Dept. of Artificial dimensional scene analysis programs pair data surface patches (i.e. as extracted from range data) to model surface patch features. From the correspon- dences, a variety of rotation and translation constraints

Fisher, Bob

168

Ideal gas matching for thermal Galilean holography  

E-Print Network (OSTI)

We exhibit a nonrelativistic ideal gas with a Kaluza-Klein tower of species, featuring a singular behavior of thermodynamic functions at zero chemical potential. In this way, we provide a qualitative match to the thermodynamics of recently found black holes in backgrounds with asymptotic nonrelativistic conformal symmetry.

Jose L. F. Barbon; Carlos A. Fuertes

2009-03-26T23:59:59.000Z

169

Impedance-matched drilling telemetry system  

DOE Patents (OSTI)

A downhole telemetry system that uses inductance or capacitance as a mode through which signal is communicated across joints between assembled lengths of pipe wherein efficiency of signal propagation through a drill string, for example, over multiple successive pipe segments is enhanced through matching impedances associated with the various telemetry system components.

Normann, Randy A. (Edgewood, NM); Mansure, Arthur J. (Albuquerque, NM)

2008-04-22T23:59:59.000Z

170

Method of adiabatic modes in studying problems of smoothly irregular open waveguide structures  

SciTech Connect

Basic steps in developing an original method of adiabatic modes that makes it possible to solve the direct and inverse problems of simulating and designing three-dimensional multilayered smoothly irregular open waveguide structures are described. A new element in the method is that an approximate solution of Maxwell's equations is made to obey 'inclined' boundary conditions at the interfaces between themedia being considered. These boundary conditions take into account the obliqueness of planes tangent to nonplanar boundaries between the media and lead to new equations for coupled vector quasiwaveguide hybrid adiabatic modes. Solutions of these equations describe the phenomenon of 'entanglement' of two linear polarizations of an irregular multilayered waveguide, the appearance of a new mode in an entangled state, and the effect of rotation of the polarization plane of quasiwaveguide modes. The efficiency of the method is demonstrated by considering the example of numerically simulating a thin-film generalized waveguide Lueneburg lens.

Sevastianov, L. A., E-mail: sevast@sci.pfu.edu.ru [Peoples' Friendship University of Russia (Russian Federation); Egorov, A. A. [Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation)] [Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation); Sevastyanov, A. L. [Peoples' Friendship University of Russia (Russian Federation)] [Peoples' Friendship University of Russia (Russian Federation)

2013-02-15T23:59:59.000Z

171

Determination of Non-Adiabatic Scattering Wave Functions in a Born-Oppenheimer Model  

E-Print Network (OSTI)

We study non--adiabatic transitions in scattering theory for the time dependent molecular Schroedinger equation in the Born--Oppenheimer limit. We assume the electron Hamiltonian has finitely many levels and consider the propagation of coherent states with high enough total energy. When two of the electronic levels are isolated from the rest of the electron Hamiltonian's spectrum and display an avoided crossing, we compute the component of the nuclear wave function associated with the non--adiabatic transition that is generated by propagation through the avoided crossing. This component is shown to be exponentially small in the square of the Born--Oppenheimer parameter, due to the Landau-Zener mechanism. It propagates asymptotically as a free Gaussian in the nuclear variables, and its momentum is shifted. The total transition probability for this transition and the momentum shift are both larger than what one would expect from a naive approximation and energy conservation.

G. A. Hagedorn; A. Joye

2004-06-21T23:59:59.000Z

172

Multi-objective optimization of Stirling engine using non-ideal adiabatic method  

Science Journals Connector (OSTI)

Abstract In the recent years, remarkable attention is drawn to Stirling engine due to noticeable advantages, for instance a lot of resources such as biomass, fossil fuels and solar energy can be applied as heat source. Great numbers of studies are conducted on Stirling engines and non-ideal adiabatic method is one of them. In the present study, the efficiency and the power loss due to pressure drop into the heat exchangers are optimized for a Stirling system using non-ideal adiabatic analysis and the second-version Non-dominated Sorting Genetic Algorithm. The optimized answers are chosen from the results using three decision-making methods. The applied methods were compared at last and the best results were obtained for the technique for order preference by similarity to ideal solution decision making method.

Somayeh Toghyani; Alibakhsh Kasaeian; Mohammad H. Ahmadi

2014-01-01T23:59:59.000Z

173

Bipolar thermoelectric devices  

E-Print Network (OSTI)

The work presented here is a theoretical and experimental study of heat production and transport in bipolar electrical devices, with detailed treatment of thermoelectric effects. Both homojunction and heterojunction devices ...

Pipe, Kevin P. (Kevin Patrick), 1976-

2004-01-01T23:59:59.000Z

174

Pulse flux measuring device  

DOE Patents (OSTI)

A device for measuring particle flux comprises first and second photodiode detectors for receiving flux from a source and first and second outputs for producing first and second signals representing the flux incident to the detectors. The device is capable of reducing the first output signal by a portion of the second output signal, thereby enhancing the accuracy of the device. Devices in accordance with the invention may measure distinct components of flux from a single source or fluxes from several sources.

Riggan, William C. (Albuquerque, NM)

1985-01-01T23:59:59.000Z

175

Pulse detecting device  

DOE Patents (OSTI)

A device for measuring particle flux comprises first and second photodiode detectors for receiving flux from a source and first and second outputs for producing first and second signals representing the flux incident to the detectors. The device is capable of reducing the first output signal by a portion of the second output signal, thereby enhancing the accuracy of the device. Devices in accordance with the invention may measure distinct components of flux from a single source or fluxes from several sources.

Riggan, W.C.

1984-01-01T23:59:59.000Z

176

Transient energy excitation in shortcuts to adiabaticity for the time-dependent harmonic oscillator  

SciTech Connect

We study for the time-dependent harmonic oscillator the transient energy excitation in speed-up processes ('shortcuts to adiabaticity') designed to reproduce the initial populations at some predetermined final frequency and time. We provide lower bounds and examples. Implications for the limits imposed to the process times and for the principle of unattainability of the absolute zero, in a single expansion or in quantum refrigerator cycles, are drawn.

Chen Xi [Departamento de Quimica Fisica, UPV-EHU, Apartado 644, E-48080 Bilbao (Spain); Department of Physics, Shanghai University, 200444 Shanghai (China); Muga, J. G. [Departamento de Quimica Fisica, UPV-EHU, Apartado 644, E-48080 Bilbao (Spain); Max Planck Institute for the Physics of Complex Systems, Noethnitzer Strasse 38, D-01187 Dresden (Germany)

2010-11-15T23:59:59.000Z

177

Adiabatic Mach-Zehnder Interferometry on a Quantized Bose-Josephson Junction  

SciTech Connect

We propose a scheme to achieve Mach-Zehnder interferometry using a quantized Bose-Josephson junction with a negative charging energy. The quantum adiabatic evolution through a dynamical bifurcation is used to accomplish the beam splitting and recombination. The negative charging energy ensures the existence of a path-entangled state which enhances the phase measurement precision to the Heisenberg limit. A feasible detection procedure is also presented. The scheme should be realizable with current technology.

Lee, Chaohong [Nonlinear Physics Centre and ARC Centre of Excellence for Quantum-Atom Optics, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200 (Australia)

2006-10-13T23:59:59.000Z

178

Adiabatic Mach-Zehnder Interferometry on A Quantized Bose-Josephson Junction  

E-Print Network (OSTI)

We propose a scheme to achieve a Mach-Zehnder interferometry using a quantized Bose-Josephson junction with negative charging energy. The quantum adiabatic evolution through a dynamical bifurcation is used to accomplish the beam splitting and recombination. The negative charging energy ensures the existence of a path-entangled state which enhances the phase measurement precision to the Heisenberg limit. A feasible detection procedure is also presented. The scheme should be realizable with current technology.

Chaohong Lee

2006-09-14T23:59:59.000Z

179

Universality of spin relaxation for spin-1/2 particles diffusing over magnetic-field inhomogeneities in the adiabatic regime  

Science Journals Connector (OSTI)

We present a theoretical analysis of spin relaxation, for a polarized gas of spin 1/2 particles undergoing restricted adiabatic diffusive motion within a container of arbitrary shape, due to magnetic field inhomogeneities of arbitrary form.

M. Guigue; G. Pignol; R. Golub; A. K. Petukhov

2014-07-09T23:59:59.000Z

180

Vibrational states of the triplet electronic state of H3+. The role of non-adiabatic coupling and geometrical phase  

E-Print Network (OSTI)

Vibrational energies and wave functions of the triplet state of the H3+ ion have been determined. In the calculations, the ground and first excited triplet electronic states are included as well as the non-Born-Oppenheimer coupling between them. A diabatization procedure transforming the two adiabatic ab initio potential energy surfaces of the triplet-H3+ state into a 2x2 matrix is employed. The diabatization takes into account the non-Born-Oppenheimer coupling and the effect of the geometrical phase due to the conical intersection between the two adiabatic potential surfaces. The results are compared to the calculation involving only the lowest adiabatic potential energy surface of the triplet-H3+ ion and neglecting the geometrical phase. The energy difference between results with and without the non-adiabatic coupling and the geometrical phase is about a wave number for the lowest vibrational levels.

Alijah, Alexander

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "adiabatic matching device" 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

Containment of an adiabatic plasma on magnetic lines of force by a self-generated electrostatic field  

Science Journals Connector (OSTI)

One component of a three-fluid adiabatic plasma is under certain conditions contained in a restricted region of space by a large-scale electrostatic field generated within the plasma. The containment is discus...

A. Hruška

182

Articulating feedstock delivery device  

DOE Patents (OSTI)

A fully articulable feedstock delivery device that is designed to operate at pressure and temperature extremes. The device incorporates an articulating ball assembly which allows for more accurate delivery of the feedstock to a target location. The device is suitable for a variety of applications including, but not limited to, delivery of feedstock to a high-pressure reaction chamber or process zone.

Jordan, Kevin

2013-11-05T23:59:59.000Z

183

Organic photosensitive devices  

DOE Patents (OSTI)

The present invention generally relates to organic photosensitive optoelectronic devices. More specifically, it is directed to organic photosensitive optoelectronic devices having a photoactive organic region containing encapsulated nanoparticles that exhibit plasmon resonances. An enhancement of the incident optical field is achieved via surface plasmon polariton resonances. This enhancement increases the absorption of incident light, leading to a more efficient device.

Rand, Barry P; Forrest, Stephen R

2013-11-26T23:59:59.000Z

184

Optimization of the Coherent Intensity from Multi-Segment Undulators by Phase Matching  

SciTech Connect

The use of inline insertion devices at third-generation synchrotron radiation sources can result in destructive interference effects if the relative phase between the devices is not properly adjusted. The destructive interference can strongly affect the emission spectrum and coherent wavefront of a compound insertion device. We simulate the photon source generated by a dual-inline elliptically polarizing undulator (EPU) situated in a low-{beta} straight section of the planned NSLS-II storage ring and show that a magnetic chicane with adjustable field integral can be used to phase-match the devices. Furthermore, we show that the maximum coherent intensity is delivered by a focusing x-ray beamline if the chicane is adjusted to phase-match the off-axis and red-shifted radiation. Such a system will be installed at the coherent soft x-ray (CSX) beamline of the NSLS-II in order to provide the highest possible coherent flux for coherent soft x-ray scattering experiments.

Shapiro, D.; Chubar, O.; Reininger, R.; Sanchez-Hanke, C. [NSLS and NSLS-II, Brookhaven National Laboratory, Upton, NY 11973 (United States)

2011-09-09T23:59:59.000Z

185

Optimization of the Coherent Intensity from Multi-Segment Undulators by Phase Matching  

SciTech Connect

The use of inline insertion devices at third-generation synchrotron radiation sources can result in destructive interference effects if the relative phase between the devices is not properly adjusted. The destructive interference can strongly affect the emission spectrum and coherent wavefront of a compound insertion device. We simulate the photon source generated by a dual-inline elliptically polarizing undulator (EPU) situated in a low-{beta} straight section of the planned NSLS-II storage ring and show that a magnetic chicane with adjustable field integral can be used to phase-match the devices. Furthermore, we show that the maximum coherent intensity is delivered by a focusing x-ray beamline if the chicane is adjusted to phase-match the off-axis and red-shifted radiation. Such a system will be installed at the coherent soft x-ray (CSX) beamline of the NSLS-II in order to provide the highest possible coherent flux for coherent soft x-ray scattering experiments.

Shapiro D.; Chubar, O.; Reininger, R.; Sanchez-Hanke, C.

2012-08-15T23:59:59.000Z

186

Quantification of uncertainty during history matching  

E-Print Network (OSTI)

technology requirements and possibly marginal investment indicators. Our method of quantifying uncertainty uses a set of history-match runs and includes a method to determine the probability density function (pdf) of future oil production (reserves... side)?????. 29 3.16 Marginal cumulative oil production correlates well with total error?.. 32 ix FIGURE Page 3.17 Weighted standard deviation is smaller than non weighted?..?..?? 37 3.18 Shows sets of weighted and non weighted mean...

Alvarado, Martin Guillermo

2004-09-30T23:59:59.000Z

187

Matched Index of Refraction Flow Facility  

ScienceCinema (OSTI)

What's 27 feet long, 10 feet tall and full of mineral oil (3000 gallons' worth)? If you said INL's Matched Index of Refraction facility, give yourself a gold star. Scientists use computers to model the inner workings of nuclear reactors, and MIR helps validate those models. INL's Hugh McIlroy explains in this video. You can learn more about INL energy research at the lab's facebook site http://www.facebook.com/idahonationallaboratory.

Mcllroy, Hugh

2013-05-28T23:59:59.000Z

188

Impedance Matched Absorptive Thermal Blocking Filters  

E-Print Network (OSTI)

We have designed, fabricated and characterized absorptive thermal blocking filters for cryogenic microwave applications. The transmission line filter's input characteristic impedance is designed to match $50\\,\\Omega$ and its response has been validated from 0-to-50\\,GHz. The observed return loss in the 0-to-20\\,GHz design band is greater than $20\\,$dB and shows graceful degradation with frequency. Design considerations and equations are provided that enable this approach to be scaled and modified for use in other applications.

Wollack, E J; Rostem, K; U-Yen, K

2014-01-01T23:59:59.000Z

189

Substrate structures for InP-based devices  

DOE Patents (OSTI)

A substrate structure for an InP-based semiconductor device having an InP based film is disclosed. The substrate structure includes a substrate region having a lightweight bulk substrate and an upper GaAs layer. An interconnecting region is disposed between the substrate region and the InP-based device. The interconnecting region includes a compositionally graded intermediate layer substantially lattice-matched at one end to the GaAs layer and substantially lattice-matched at the opposite end to the InP-based film. The interconnecting region further includes a dislocation mechanism disposed between the GaAs layer and the InP-based film in cooperation with the graded intermediate layer, the buffer mechanism blocking and inhibiting propagation of threading dislocations between the substrate region, and the InP-based device.

Wanlass, Mark W. (Golden, CO); Sheldon, Peter (Lakewood, CO)

1990-01-01T23:59:59.000Z

190

Improved substrate structures for InP-based devices  

SciTech Connect

A substrate structure for an InP-based semiconductor device having an InP-based film is disclosed. The substrate structure includes a substrate region having a light-weight bulk substrate and an upper GaAs layer. An interconnecting region is disposed between the substrate region and the InP-based device. The interconnecting region includes a compositionally graded intermediate layer substantially lattice matched at its one end to the GaAs layer and substantially lattice matched at its opposite end to the InP-based film. The interconnecting region further includes a dislocation mechanism disposed between the GaAs layer and the InP-based film in cooperation with the graded intermediate layer, the buffer mechanism blocking and inhibiting propagation of threading dislocations between the substrate region and the InP-based device. 1 fig.

Wanlass, M.; Sheldon, P.

1988-09-30T23:59:59.000Z

191

History Matching in Parallel Computational Environments  

SciTech Connect

A novel methodology for delineating multiple reservoir domains for the purpose of history matching in a distributed computing environment has been proposed. A fully probabilistic approach to perturb permeability within the delineated zones is implemented. The combination of robust schemes for identifying reservoir zones and distributed computing significantly increase the accuracy and efficiency of the probabilistic approach. The information pertaining to the permeability variations in the reservoir that is contained in dynamic data is calibrated in terms of a deformation parameter rD. This information is merged with the prior geologic information in order to generate permeability models consistent with the observed dynamic data as well as the prior geology. The relationship between dynamic response data and reservoir attributes may vary in different regions of the reservoir due to spatial variations in reservoir attributes, well configuration, flow constrains etc. The probabilistic approach then has to account for multiple r{sub D} values in different regions of the reservoir. In order to delineate reservoir domains that can be characterized with different rD parameters, principal component analysis (PCA) of the Hessian matrix has been done. The Hessian matrix summarizes the sensitivity of the objective function at a given step of the history matching to model parameters. It also measures the interaction of the parameters in affecting the objective function. The basic premise of PC analysis is to isolate the most sensitive and least correlated regions. The eigenvectors obtained during the PCA are suitably scaled and appropriate grid block volume cut-offs are defined such that the resultant domains are neither too large (which increases interactions between domains) nor too small (implying ineffective history matching). The delineation of domains requires calculation of Hessian, which could be computationally costly and as well as restricts the current approach to some specific simulators. Therefore a robust technique to evaluate a covariance matrix, which is analogous to ''Hessian matrix'', from a set of equi-probable realizations has also been developed. This technique is easy to implement and provides the domains, which could be intuitively justified. Since the domain delineation process yields zones that are least correlated with each other, each r{sub D} parameter can be optimized independently and simultaneously using individual nodes of a cluster of computers. Further least correlation criteria help in retaining the simplicity of 1-D optimization during the history matching. Upon convergence, the perturbed regions are put together and the history match is verified. The proposed approach results in a set of independent tasks of equal magnitude and thus is particularly suited for distributed computing. The methodology has been successfully tested on various synthetic cases.

Steven Bryant; Sanjay Srinivasan; Alvaro Barrera; Sharad Yadav

2005-10-01T23:59:59.000Z

192

Mobile Device Guide Apple iPhone Devices  

E-Print Network (OSTI)

Mobile Device Guide ­ Apple iPhone Devices CSUF Date Last Revised: 1/20/11 Page 1 of 3 ConnectingPhone desktop. 1a. Expand `Mail, Contacts, Calendars' as shown. #12;Mobile Device Guide ­ Apple iPhone Devices (case sensitive). 4. Tap `next'. #12;Mobile Device Guide ­ Apple iPhone Devices CSUF Date Last Revised

de Lijser, Peter

193

Practical Characterization of Quantum Devices without Tomography  

Science Journals Connector (OSTI)

Quantum tomography is the main method used to assess the quality of quantum information processing devices. However, the amount of resources needed for quantum tomography is exponential in the device size. Part of the problem is that tomography generates much more information than is usually sought. Taking a more targeted approach, we develop schemes that enable (i) estimating the fidelity of an experiment to a theoretical ideal description, (ii) learning which description within a reduced subset best matches the experimental data. Both these approaches yield a significant reduction in resources compared to tomography. In particular, we demonstrate that fidelity can be estimated from a number of simple experiments that is independent of the system size, removing an important roadblock for the experimental study of larger quantum information processing units.

Marcus P. da Silva; Olivier Landon-Cardinal; David Poulin

2011-11-16T23:59:59.000Z

194

Allocating energy in a first-to-n match  

Science Journals Connector (OSTI)

......expenditure. The modelling of energy replenishment during the match...deal with a limited supply of energy. R EFERENCES BLACKWELL,D...Games and Statistical Decisions.New York: Wiley. ALLOCATING ENERGY IN A FIRST-TOn MATCH 37 GAESSER......

Jack Brimberg; W. J. Hurley; D. U. Lior

2004-01-01T23:59:59.000Z

195

Barrier breaching device  

DOE Patents (OSTI)

A barrier breaching device that is designed primarily for opening holes in interior walls of buildings uses detonating fuse for explosive force. The fuse acts as the ribs or spokes of an umbrella-like device that may be opened up to form a cone. The cone is placed against the wall so that detonating fuse that rings the base of the device and which is ignited by the spoke-like fuses serves to cut a circular hole in the wall.

Honodel, Charles A. (Tracy, CA)

1985-01-01T23:59:59.000Z

196

Barrier breaching device  

DOE Patents (OSTI)

A barrier breaching device that is designed primarily for opening holes in interior walls of buildings uses detonating fuse for explosive force. The fuse acts as the ribs or spokes of an umbrella-like device that may be opened up to form a cone. The cone is placed against the wall so that detonating fuse that rings the base of the device and which is ignited by the spoke-like fuses serves to cut a circular hole in the wall.

Honodel, C.A.

1983-06-01T23:59:59.000Z

197

Image Mining by Matching Exemplars Using Entropy Clark F. Olson  

E-Print Network (OSTI)

different sensors (e.g. CCD versus FLIR). Current matching techniques are effi- cient for single images

Olson, Clark F.

198

Resistance after firing protected electric match. [Patent application  

DOE Patents (OSTI)

An electric match having electrical leads embedded in flame-producing compound is protected against an accidental resistance across the leads after firing by a length of heat-shrinkable tubing encircling the match body and having a skirt portion extending beyond the leads. The heat of the burning match and an adjacent thermal battery causes the tubing to fold over the end of the match body, covering the ends of the leads and protecting them from molten pieces of the battery.

Montoya, A.P.

1980-03-20T23:59:59.000Z

199

Active Terahertz Metamaterial Devices  

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

Active Terahertz Metamaterial Devices Active Terahertz Metamaterial Devices Active Terahertz Metamaterial Devices Metamaterial structures are taught which provide for the modulation of terahertz frequency signals. Available for thumbnail of Feynman Center (505) 665-9090 Email Active Terahertz Metamaterial Devices Metamaterial structures are taught which provide for the modulation of terahertz frequency signals. Each element within an array of metamaterial (MM) elements comprises multiple loops and at least one gap. The MM elements may comprise resonators with conductive loops and insulated gaps, or the inverse in which insulated loops are present with conductive gaps; each providing useful transmissive control properties. The metamaterial elements are fabricated on a semiconducting substrate configured with a

200

Composite Thermoelectric Devices  

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

Composite thermoelectric devices incorporating common conductors laminated between P- and N-type thermoelectric plates demonstrate internal ohmic loss reduction and enhanced performance

Note: This page contains sample records for the topic "adiabatic matching device" 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

Hidden Markov map matching through noise and sparseness  

Science Journals Connector (OSTI)

The problem of matching measured latitude/longitude points to roads is becoming increasingly important. This paper describes a novel, principled map matching algorithm that uses a Hidden Markov Model (HMM) to find the most likely road route represented ... Keywords: driving routes, location, map matching, road map

Paul Newson; John Krumm

2009-11-01T23:59:59.000Z

202

Non-Rigid Matching Tat-Jun Chin  

E-Print Network (OSTI)

-rigid "keystoning" (correcting projector output) in projector-camera systems. ­ Non-rigid structure from motion (can Matching Using Shape Context, PAMI 2005. #12;Typical pipeline Input images Feature detection and matching ­ How non-rigid is it? · Conclusions #12;Typical pipeline Input images Feature detection and matching

Carneiro, Gustavo

203

Conceptual design and engineering studies of adiabatic compressed air energy storage (CAES) with thermal energy storage  

SciTech Connect

The objective of this study was to perform a conceptual engineering design and evaluation study and to develop a design for an adiabatic CAES system using water-compensated hard rock caverns for compressed air storage. The conceptual plant design was to feature underground containment for thermal energy storage and water-compensated hard rock caverns for high pressure air storage. Other design constraints included the selection of turbomachinery designs that would require little development and would therefore be available for near-term plant construction and demonstration. The design was to be based upon the DOE/EPRI/PEPCO-funded 231 MW/unit conventional CAES plant design prepared for a site in Maryland. This report summarizes the project, its findings, and the recommendations of the study team; presents the development and optimization of the plant heat cycle and the selection and thermal design of the thermal energy storage system; discusses the selection of turbomachinery and estimated plant performance and operational capability; describes the control system concept; and presents the conceptual design of the adiabatic CAES plant, the cost estimates and economic evaluation, and an assessment of technical and economic feasibility. Particular areas in the plant design requiring further development or investigation are discussed. It is concluded that the adiabatic concept appears to be the most attractive candidate for utility application in the near future. It is operationally viable, economically attractive compared with competing concerns, and will require relatively little development before the construction of a plant can be undertaken. It is estimated that a utility could start the design of a demonstration plant in 2 to 3 years if research regarding TES system design is undertaken in a timely manner. (LCL)

Hobson, M.J.

1981-11-01T23:59:59.000Z

204

Mobile Device Management Android Device Enrollment  

E-Print Network (OSTI)

to manage your device. c. Enter your password. #12;d. Accept the Terms and Conditions e. You have completed. 2. Get Touchdown from Google Play a. Open up the Google Play Store. b. Search for Touchdown. c. Use the application. #12;3. Get Citrix Mobile Connect from Google Play a. Open up the Google Play Store. b. Search

205

The adiabatic phase mixing and heating of electrons in Buneman turbulence  

SciTech Connect

The nonlinear development of the strong Buneman instability and the associated fast electron heating in thin current layers with ?{sub e}/?{sub pe}<1 is explored. Phase mixing of the electrons in wave potential troughs and a rapid increase in temperature are observed during the saturation of the instability. We show that the motion of trapped electrons can be described using a Hamiltonian formalism in the adiabatic approximation. The process of separatrix crossing as electrons are trapped and de-trapped is irreversible and guarantees that the resulting electron energy gain is a true heating process.

Che, H.; Goldstein, M. L. [Goddard Space Flight Center, NASA, Greenbelt, Maryland 20771 (United States)] [Goddard Space Flight Center, NASA, Greenbelt, Maryland 20771 (United States); Drake, J. F.; Swisdak, M. [IREAP, University of Maryland, College Park, Maryland 20742 (United States)] [IREAP, University of Maryland, College Park, Maryland 20742 (United States)

2013-06-15T23:59:59.000Z

206

Critical behavior of two freely evolving granular gases separated by an adiabatic piston  

E-Print Network (OSTI)

Two granular gases separated by an adiabatic piston and initially in the same macroscopic state are considered. It is found that a phase transition with an spontaneous symmetry breaking occurs. When the mass of the piston is increased beyond a critical value, the piston moves to a stationary position different from the middle of the system. The transition is accurately described by a simple kinetic model that takes into account the velocity fluctuations of the piston. Interestingly, the final state is not characterized by the equality of the temperatures of the subsystems but by the cooling rates being the same. Some relevant consequences of this feature are discussed.

J. Javier Brey; Nagi Khalil

2010-09-23T23:59:59.000Z

207

Self-actuated device  

DOE Patents (OSTI)

A self-actuated device, of particular use as a valve or an orifice for nuclear reactor fuel and blanket assemblies, in which a gas produced by a neutron induced nuclear reaction gradually accumulates as a function of neutron fluence. The gas pressure increase occasioned by such accumulation of gas is used to actuate the device.

Hecht, Samuel L. (Richland, WA)

1984-01-01T23:59:59.000Z

208

Pulse charging device  

SciTech Connect

This paper describes a device for pulse charging of capacitor storage devices of high-power nanosecond generators. The charging voltage reaches 30 kV, the charged capacitance is 2-100 nF, the charging time is 5-10 usec, the pulse frequency reaches 10 kHz, and the average power of the device is 15 kW. The device uses two-section oscillatory charging of the capacitors from a dc supply through high-speed thyristors and a pulse transformer. The described device is intended for use as part of a test bench for high-power nanosecond pulse generators for pumping gas lasers and their components.

Butakov, L.D.; Dubich, V.K.; Lashuk, N.A.; Shubkin, N.G.; Vizir', V.A.

1986-03-01T23:59:59.000Z

209

Fluidic nanotubes and devices  

DOE Patents (OSTI)

Fluidic nanotube devices are described in which a hydrophilic, non-carbon nanotube, has its ends fluidly coupled to reservoirs. Source and drain contacts are connected to opposing ends of the nanotube, or within each reservoir near the opening of the nanotube. The passage of molecular species can be sensed by measuring current flow (source-drain, ionic, or combination). The tube interior can be functionalized by joining binding molecules so that different molecular species can be sensed by detecting current changes. The nanotube may be a semiconductor, wherein a tubular transistor is formed. A gate electrode can be attached between source and drain to control current flow and ionic flow. By way of example an electrophoretic array embodiment is described, integrating MEMs switches. A variety of applications are described, such as: nanopores, nanocapillary devices, nanoelectrophoretic, DNA sequence detectors, immunosensors, thermoelectric devices, photonic devices, nanoscale fluidic bioseparators, imaging devices, and so forth.

Yang, Peidong (El Cerrito, CA); He, Rongrui (El Cerrito, CA); Goldberger, Joshua (Berkeley, CA); Fan, Rong (El Cerrito, CA); Wu, Yiying (Albany, CA); Li, Deyu (Albany, CA); Majumdar, Arun (Orinda, CA)

2010-01-10T23:59:59.000Z

210

Planar electrochemical device assembly  

DOE Patents (OSTI)

A pre-fabricated electrochemical device having a dense electrolyte disposed between an anode and a cathode preferably deposited as thin films is bonded to a porous electrically conductive support. A second porous electrically conductive support may be bonded to a counter electrode of the electrochemical device. Multiple electrochemical devices may be bonded in parallel to a single porous support, such as a perforated sheet to provide a planar array. Planar arrays may be arranged in a stacked interconnected array. A method of making a supported electrochemical device is disclosed wherein the method includes a step of bonding a pre-fabricated electrochemical device layer to an existing porous metal or porous metal alloy layer.

Jacobson; Craig P. (Lafayette, CA), Visco; Steven J. (Berkeley, CA), De Jonghe; Lutgard C. (Lafayette, CA)

2010-11-09T23:59:59.000Z

211

Applying Machine Learning to Catalogue Matching in Astrophysics  

E-Print Network (OSTI)

We present the results of applying automated machine learning techniques to the problem of matching different object catalogues in astrophysics. In this study we take two partially matched catalogues where one of the two catalogues has a large positional uncertainty. The two catalogues we used here were taken from the HI Parkes All Sky Survey (HIPASS), and SuperCOSMOS optical survey. Previous work had matched 44% (1887 objects) of HIPASS to the SuperCOSMOS catalogue. A supervised learning algorithm was then applied to construct a model of the matched portion of our catalogue. Validation of the model shows that we achieved a good classification performance (99.12% correct). Applying this model, to the unmatched portion of the catalogue found 1209 new matches. This increases the catalogue size from 1887 matched objects to 3096. The combination of these procedures yields a catalogue that is 72% matched.

D J Rohde; M J Drinkwater; M R Gallagher; T Downs; M T Doyle

2005-04-01T23:59:59.000Z

212

A Simple shower and matching algorithm  

SciTech Connect

We present a simple formalism for parton-shower Markov chains. As a first step towards more complete 'uncertainty bands', we incorporate a comprehensive exploration of the ambiguities inherent in such calculations. To reduce this uncertainty, we then introduce a matching formalism which allows a generated event sample to simultaneously reproduce any infrared safe distribution calculated at leading or next-to-leading order in perturbation theory, up to sub-leading corrections. To enable a more universal definition of perturbative calculations, we also propose a more general definition of the hadronization cutoff. Finally, we present an implementation of some of these ideas for final-state gluon showers, in a code dubbed VINCIA.

Giele, Walter T.; /Fermilab; Kosower, David A.; /Saclay, SPhT; Skands, Peter Z.; /Fermilab

2007-07-01T23:59:59.000Z

213

Ideal quantum gas in expanding cavity: nature of non-adiabatic force  

E-Print Network (OSTI)

We consider a quantum gas of non-interacting particles confined in the expanding cavity, and investigate the nature of the non-adiabatic force which is generated from the gas and acts on the cavity wall. Firstly, with use of the time-dependent canonical transformation which transforms the expanding cavity to the non-expanding one, we can define the force operator. Secondly, applying the perturbative theory which works when the cavity wall begins to move at time origin, we find that the non-adiabatic force is quadratic in the wall velocity and thereby does not break the time-reversal symmetry, in contrast with the general belief. Finally, using an assembly of the transitionless quantum states, we obtain the nonadiabatic force exactly. The exact result justifies the validity of both the definition of force operator and the issue of the perturbative theory. The mysterious mechanism of nonadiabatic transition with use of transitionless quantum states is also explained. The study is done on both cases of the hard-wall and soft-wall confinement with the time-dependent confining length.

K. Nakamura; S. K. Avazbaev; Z. A. Sobirov; D. U. Matrasulov; T. Monnai

2011-05-21T23:59:59.000Z

214

The effect of laser pulse shape variations on the adiabat of NIF capsule implosions  

SciTech Connect

Indirectly driven capsule implosions on the National Ignition Facility (NIF) [Moses et al., Phys. Plasmas 16, 041006 (2009)] are being performed with the goal of compressing a layer of cryogenic deuterium-tritium (DT) fuel to a sufficiently high areal density (?R) to sustain the self-propagating burn wave that is required for fusion power gain greater than unity. These implosions are driven with a temporally shaped laser pulse that is carefully tailored to keep the DT fuel on a low adiabat (ratio of fuel pressure to the Fermi degenerate pressure). In this report, the impact of variations in the laser pulse shape (both intentionally and unintentionally imposed) on the in-flight implosion adiabat is examined by comparing the measured shot-to-shot variations in ?R from a large ensemble of DT-layered ignition target implosions on NIF spanning a two-year period. A strong sensitivity to variations in the early-time, low-power foot of the laser pulse is observed. It is shown that very small deviations (?0.1% of the total pulse energy) in the first 2 ns of the laser pulse can decrease the measured ?R by 50%.

Robey, H. F.; MacGowan, B. J.; Landen, O. L.; LaFortune, K. N.; Widmayer, C.; Celliers, P. M.; Moody, J. D.; Ross, J. S.; Ralph, J.; LePape, S.; Berzak Hopkins, L. F.; Spears, B. K.; Haan, S. W.; Clark, D.; Lindl, J. D.; Edwards, M. J. [LLNL, Livermore, California 94550 (United States)] [LLNL, Livermore, California 94550 (United States)

2013-05-15T23:59:59.000Z

215

Non-adiabatic quantum pumping by a randomly moving quantum dot  

E-Print Network (OSTI)

We look at random time dependent fluctuations of the electrical charge in an open 1D quantum system represented by a quantum dot experiencing random lateral motion. In essentially non-adiabatic settings we study both diffusive and ballistic (Levy) regimes of the barrier motion. Here the electric current as well as the net pumped electric charge experience random fluctuations over the static background. We show that in the large-time limit $t \\to \\infty$ the wavefunction is naturally separated into the Berry-phase component (resulting from the singular part of the wave amplitude in the co-moving frame) and the non-adiabatic correction (arising from fast oscillating, slow decaying tails of the same amplitude). In the special limit of a delta-correlated continuous Gaussian random walk we obtain closed analytical expressions for the ensemble averaged amplitude in the co-moving frame and demonstrate that the main contribution to the average wavefunction and probability current comes from the Berry-phase component which leads to the saturation of the fluctuations of the electric current and the pumped charge. We also derive the exact expressions for the average propagator (in the co-moving basis representation) for both types of motion.

Stanislav Derevyanko; Daniel Waltner

2015-02-10T23:59:59.000Z

216

Unipolar arc simulation device  

SciTech Connect

We describe a simple laboratory device for establishing a vacuum arc plasma discharge that can serve to simulate a unipolar arc. The technique makes use of a triggered vacuum arc plasma gun to generate a plasma plume that in turn causes breakdown of a secondary discharge. The device is in fact a secondary vacuum arc discharge that is triggered by a primary vacuum arc discharge, with some of the features of the secondary plasma discharge having similarities with a unipolar arc configuration. Here we describe the experimental setup and outline how the device can be used for some areas of unipolar arc materials research. [copyright] [ital 1999 American Institute of Physics.

Wang, S.G.; Brown, I.G. (Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720 (United States))

1999-09-01T23:59:59.000Z

217

Flat designs of impedance-matched nonmagnetic phase transformer and wave-shaping polarization splitter via transformation optics  

Science Journals Connector (OSTI)

Abstract Based on transformation optics, we propose a method to realize an arbitrary wavefront transformation through an impedance-matched nonmagnetic slab. First, we follow the principle of equal optical path length to realize arbitrary phase transformations by a flat configuration, adopt a nonlinear coordinate transformation to ensure impedance match, and preserve the dispersion relation to render the device nonmagnetic. Applying this method, a phase transformer is designed such that both the wave shape and propagation direction can be changed. Second, we choose distinct deflection angles for two orthogonal polarizations and combine the two sets of material parameters into an anisotropic slab, whereby a wavefront-controllable polarization splitter is achieved. The results are further validated by numerical simulations. The method proposed can be used to develop all-dielectric, lossless and broadband devices that can be easily constructed at optical frequencies.

Weixing Shu; Shuaisai Yang; Wenyan Yan; Yougang Ke; Trevor Smith

2015-01-01T23:59:59.000Z

218

Low-bandgap, monolithic, multi-bandgap, optoelectronic devices  

DOE Patents (OSTI)

Low bandgap, monolithic, multi-bandgap, optoelectronic devices (10), including PV converters, photodetectors, and LED's, have lattice-matched (LM), double-heterostructure (DH), low-bandgap GaInAs(P) subcells (22, 24) including those that are lattice-mismatched (LMM) to InP, grown on an InP substrate (26) by use of at least one graded lattice constant transition layer (20) of InAsP positioned somewhere between the InP substrate (26) and the LMM subcell(s) (22, 24). These devices are monofacial (10) or bifacial (80) and include monolithic, integrated, modules (MIMs) (190) with a plurality of voltage-matched subcell circuits (262, 264, 266, 270, 272) as well as other variations and embodiments.

Wanlass, Mark W.; Carapella, Jeffrey J.

2014-07-08T23:59:59.000Z

219

Wireless device monitoring systems and monitoring devices, and associated methods  

DOE Patents (OSTI)

Wireless device monitoring systems and monitoring devices include a communications module for receiving wireless communications of a wireless device. Processing circuitry is coupled with the communications module and configured to process the wireless communications to determine whether the wireless device is authorized or unauthorized to be present at the monitored area based on identification information of the wireless device. Methods of monitoring for the presence and identity of wireless devices are also provided.

McCown, Steven H; Derr, Kurt W; Rohde, Kenneth W

2014-05-27T23:59:59.000Z

220

Bring Your Own Device  

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

Bring your own Device, or BYOD, has been a popular topic for some time now. While government organizations and private companies continue to struggle with how to enjoy the business and economic...

Note: This page contains sample records for the topic "adiabatic matching device" 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

Optical Signal Processing Devices  

Science Journals Connector (OSTI)

In the previous chapters we have presented advanced optoelectronic devices which performed a specific task: generation of coherent radiation, modulation, light detection or multi/demultiplexing. In this chapte...

Professor Daniela Dragoman; Professor Mircea Dragoman

1999-01-01T23:59:59.000Z

222

Multimaterial rectifying device fibers  

E-Print Network (OSTI)

Electronic and optoelectronic device processing is commonly thought to be incompatible with much simpler thermal drawing techniques used in optical fiber production. The incorporation of metals, polymer insulators, and ...

Orf, Nicholas D

2009-01-01T23:59:59.000Z

223

Ion Channels as Devices  

Science Journals Connector (OSTI)

Ion channels are proteins with a hole down ... biological function. Channels are devices in the engineering sense of the word and engineering analysis helps understand their function. In particular ... The curren...

Bob Eisenberg

2003-12-01T23:59:59.000Z

224

Multimaterial multifunctional fiber devices  

E-Print Network (OSTI)

Optical fibers and semiconductor devices differ significantly in their properties and their processing approaches. The latter require an assembly of metal, insulator and semiconductor materials into complex geometries with ...

Sorin, Fabien

2008-01-01T23:59:59.000Z

225

Comment on "A close examination of the motion of an adiabatic piston," by Eric A. Gislason Am. J. Phys. 78 ,,10..., 9951001 ,,2010...  

E-Print Network (OSTI)

Comment on "A close examination of the motion of an adiabatic piston," by Eric A. Gislason Am. J 2010; accepted 4 January 2011 A recent paper by Gislason treats the adiabatic piston, a system of two ideal gases in a horizontal cylinder and separated by an insulating piston that moves without friction

Guerra, Vasco

226

A quantitative method for measuring the quality of history matches  

SciTech Connect

History matching can be an efficient tool for reservoir characterization. A {open_quotes}good{close_quotes} history matching job can generate reliable reservoir parameters. However, reservoir engineers are often frustrated when they try to select a {open_quotes}better{close_quotes} match from a series of history matching runs. Without a quantitative measurement, it is always difficult to tell the difference between a {open_quotes}good{close_quotes} and a {open_quotes}better{close_quotes} matches. For this reason, we need a quantitative method for testing the quality of matches. This paper presents a method for such a purpose. The method uses three statistical indices to (1) test shape conformity, (2) examine bias errors, and (3) measure magnitude of deviation. The shape conformity test insures that the shape of a simulated curve matches that of a historical curve. Examining bias errors assures that model reservoir parameters have been calibrated to that of a real reservoir. Measuring the magnitude of deviation assures that the difference between the model and the real reservoir parameters is minimized. The method was first tested on a hypothetical model and then applied to published field studies. The results showed that the method can efficiently measure the quality of matches. It also showed that the method can serve as a diagnostic tool for calibrating reservoir parameters during history matching.

Shaw, T.S. [Kerr-McGee Corp., Oklahoma City, OK (United States); Knapp, R.M. [Univ. of Oklahoma, Norman, OK (United States)

1997-08-01T23:59:59.000Z

227

The Use of Phosphorus in the Manufacture of Lucifer Matches  

Science Journals Connector (OSTI)

... never occurred, In Germany, Austria, and Switzerland, there is, how ever, the surreptitious manufacture of matches as r home industry to be contended with; this disastrou practice ...

1899-05-18T23:59:59.000Z

228

Matching Government Needs with Energy Efficient Fuel Cells |...  

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

Government Needs with Energy Efficient Fuel Cells Matching Government Needs with Energy Efficient Fuel Cells The Fuel Cell Technologies Office, Federal Energy Management Program,...

229

Matching National Laboratory Needs with Energy Efficient Fuel...  

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

National Laboratory Needs with Energy Efficient Fuel Cells Matching National Laboratory Needs with Energy Efficient Fuel Cells The Fuel Cell Technologies Office, Federal Energy...

230

A Simple Audio Conductivity Device  

Science Journals Connector (OSTI)

A Simple Audio Conductivity Device ... To solve these problems, the authors have built a simple audio conductivity device that is very sensitive to current flow. ...

Gregory Berenato; David F. Maynard

1997-04-01T23:59:59.000Z

231

Adiabatic Hyperspherical Representation for the Three-body Problem in Two Dimensions  

E-Print Network (OSTI)

We explore the three-body problem in two dimensions using the adiabatic hyperspherical representation. We develop the main equations in terms of democratic hyperangular coordinates and determine several symmetry properties and boundary conditions for both interacting and non-interacting solutions. From the analysis of the three-body effective potentials, we determine the threshold laws for low energy three-body recombination, collision-induced dissociation as well as inelastic atom-diatom collisions in two dimensions. Our results show that the hyperspherical representation can offer a simple and conceptually clear physical picture for three-body process in two dimensions which is also suitable for calculations using finite range two-body interactions supporting a number of bound states.

J. P. D'Incao; B. D. Esry

2014-04-01T23:59:59.000Z

232

Quantum state specific reactant preparation in a molecular beam by rapid adiabatic passage  

SciTech Connect

Highly efficient preparation of molecules in a specific rovibrationally excited state for gas/surface reactivity measurements is achieved in a molecular beam using tunable infrared (IR) radiation from a single mode continuous wave optical parametric oscillator (cw-OPO). We demonstrate that with appropriate focusing of the IR radiation, molecules in the molecular beam crossing the fixed frequency IR field experience a Doppler tuning that can be adjusted to achieve complete population inversion of a two-level system by rapid adiabatic passage (RAP). A room temperature pyroelectric detector is used to monitor the excited fraction in the molecular beam and the population inversion is detected and quantified using IR bleaching by a second IR-OPO. The second OPO is also used for complete population transfer to an overtone or combination vibration via double resonance excitation using two spatially separated RAP processes.

Chadwick, Helen, E-mail: helen.chadwick@epfl.ch; Hundt, P. Morten; Reijzen, Maarten E. van; Yoder, Bruce L.; Beck, Rainer D. [Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne, Lausanne (Switzerland)] [Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne, Lausanne (Switzerland)

2014-01-21T23:59:59.000Z

233

Adiabatic transfer of light in a double cavity and the optical Landau-Zener problem  

SciTech Connect

We analyze the evolution of an electromagnetic field inside a double cavity when the difference in length between the two cavities is changed, e.g., by translating the common mirror. We find that this allows photons to be moved deterministically from one cavity to the other. We are able to obtain the conditions for adiabatic transfer by first mapping the Maxwell wave equation for the electric field onto a Schroedinger-like wave equation and then using the Landau-Zener result for the transition probability at an avoided crossing. Our analysis reveals that this mapping only rigorously holds when the two cavities are weakly coupled (i.e., in the regime of a highly reflective common mirror) and that, generally speaking, care is required when attempting a Hamiltonian description of cavity electrodynamics with time-dependent boundary conditions.

Miladinovic, N.; Hasan, F.; Linnington, I. E.; O'Dell, D. H. J. [Department of Physics and Astronomy, McMaster University, 1280 Main St. W., Hamilton, Ontario, L8S 4M1 (Canada); Chisholm, N. [School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States); Hinds, E. A. [Centre for Cold Matter, Imperial College, Prince Consort Road, London SW7 2AZ (United Kingdom)

2011-10-15T23:59:59.000Z

234

An improved weighted average reactor temperature estimation for simulation of adiabatic industrial hydrotreaters  

Science Journals Connector (OSTI)

A study on the improvement of the representative operating temperature from the temperature profile of an industrial adiabatic reactor is presented. This temperature is used to simulate the reactor performance by small scale laboratory isothermal reactors. An improved methodology for the estimation of a Weighted Average Bed Temperature (WABT) was elaborated to simulate an industrial multi-bed HDS reactor. The improved WABT, so called Weighted Average Reactor Temperature (WART), was compared with the most usually used WABT in a wide range of operational conditions as well as of kinetic parameters. In case of a multi-bed industrial hydrotreater, where quench zones are located between the beds and the H2 flow rate, which enters each bed, is different, the optimal gas to oil ratio was estimated for the laboratory-scale reactor.

G.D. Stefanidis; G.D. Bellos; N.G. Papayannakos

2005-01-01T23:59:59.000Z

235

Dark energy with non-adiabatic sound speed: initial conditions and detectability  

SciTech Connect

Assuming that the universe contains a dark energy fluid with a constant linear equation of state and a constant sound speed, we study the prospects of detecting dark energy perturbations using CMB data from Planck, cross-correlated with galaxy distribution maps from a survey like LSST. We update previous estimates by carrying a full exploration of the mock data likelihood for key fiducial models. We find that it will only be possible to exclude values of the sound speed very close to zero, while Planck data alone is not powerful enough for achieving any detection, even with lensing extraction. We also discuss the issue of initial conditions for dark energy perturbations in the radiation and matter epochs, generalizing the usual adiabatic conditions to include the sound speed effect. However, for most purposes, the existence of attractor solutions renders the perturbation evolution nearly independent of these initial conditions.

Ballesteros, Guillermo [Museo Storico della Fisica e Centro Studi e Ricerche ''Enrico Fermi'', Piazza del Viminale 1, I-00184, Rome (Italy); Lesgourgues, Julien, E-mail: ballesteros@pd.infn.it, E-mail: julien.lesgourgues@cern.ch [CERN, Theory Division, CH-1211 Geneva 23 (Switzerland)

2010-10-01T23:59:59.000Z

236

Coherent and optimal control of adiabatic motion of ions in a trap Meiyu Zhao and Dmitri Babikov*  

E-Print Network (OSTI)

scenarios have been proposed and implemented 3­8 . Usually, the trapping potential in the experiment is har controlling the motional states of ions adiabatically using electric fields. In this paper several important explore an alternative ap- proach. We propose to create some small anharmonicity in the trapping potential

Reid, Scott A.

237

Z .Mechanics of Materials 28 1998 227236 Adiabatic shearband in WHA in high-strain-rate compression  

E-Print Network (OSTI)

, the deformation of a Z .conventional depleted uranium DU penetrator quickly localizes into intense adiabatic of the impacting face of the penetra- tor. Therefore, the uranium projectile is an efficient penetrator. The DU however, causes health hazards. There is, therefore, a need to replace the DU penetra- Ztors

Nemat-Nasser, Sia

238

On the Construction of Diabatic and Adiabatic Potential Energy Surfaces Based on Ab Initio Valence Bond Theory  

E-Print Network (OSTI)

that the VDC-MOVB method has been described previously. Employing the symmetric SN2 reaction between NH3 and CH bond (MOVB) approach to construct the CDC diabatic and adiabatic states for a chemical reaction. Note method is a reasonable model for VB simulations of condensed phase reactions. The results indicate

Minnesota, University of

239

Statistical mechanics of Roskilde liquids: Configurational adiabats, specific heat contours, and density dependence of the scaling exponent  

SciTech Connect

We derive exact results for the rate of change of thermodynamic quantities, in particular, the configurational specific heat at constant volume, C{sub V}, along configurational adiabats (curves of constant excess entropy S{sub ex}). Such curves are designated isomorphs for so-called Roskilde liquids, in view of the invariance of various structural and dynamical quantities along them. The slope of the isomorphs in a double logarithmic representation of the density-temperature phase diagram, ?, can be interpreted as one third of an effective inverse power-law potential exponent. We show that in liquids where ? increases (decreases) with density, the contours of C{sub V} have smaller (larger) slope than configurational adiabats. We clarify also the connection between ? and the pair potential. A fluctuation formula for the slope of the C{sub V}-contours is derived. The theoretical results are supported with data from computer simulations of two systems, the Lennard-Jones fluid, and the Girifalco fluid. The sign of d?/d? is thus a third key parameter in characterizing Roskilde liquids, after ? and the virial-potential energy correlation coefficient R. To go beyond isomorph theory we compare invariance of a dynamical quantity, the self-diffusion coefficient, along adiabats and C{sub V}-contours, finding it more invariant along adiabats.

Bailey, Nicholas P.; Bøhling, Lasse; Veldhorst, Arno A.; Schrøder, Thomas B.; Dyre, Jeppe C. [DNRF Center “Glass and Time,” IMFUFA, Dept. of Sciences, Roskilde University, P. O. Box 260, DK-4000 Roskilde (Denmark)] [DNRF Center “Glass and Time,” IMFUFA, Dept. of Sciences, Roskilde University, P. O. Box 260, DK-4000 Roskilde (Denmark)

2013-11-14T23:59:59.000Z

240

Electrical apparatus lockout device  

SciTech Connect

A simple lockout device for electrical equipment equipped with recessed power blades is described. The device comprises a face-plate (12) having a threaded member (14) attached thereto and apertures suitable for accommodating the power blades of a piece of electrical equipment, an elastomeric nose (16) abutting the face-plate having a hole for passage of the threaded member therethrough and power blade apertures in registration with those of the face-plate, a block (20) having a recess (34) in its forward face for receiving at least a portion of the hose, a hole therein for receiving the threaded member and an integral extension (26) extending from its rear face. A thumb screw (22) suitable for turning with the hands and having internal threads suitable for engaging the threaded member attached to the face-plate is inserted into a passage in the integral extension to engage the threaded member in such a fashion that when the device is inserted over the recessed power blades of a piece of electrical equipment and the thumb screw (22) tightened, the elastomeric nose (16) is compressed between the face-plate (12) and the block (20) forcing it to expand laterally thereby securing the device in the recess and precluding the accidental or intentional energization of the piece of equipment by attachment of a power cord to the recessed power blades. Means are provided in the interval extension and the thumb screw for the attachment of a locking device (46) which will satisfy OSHA standards.

Gonzales, R.

1999-10-12T23:59:59.000Z

Note: This page contains sample records for the topic "adiabatic matching device" 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

Electrical apparatus lockout device  

DOE Patents (OSTI)

A simple lockout device for electrical equipment equipped with recessed power blades is described. The device comprises a face-plate (12) having a threaded member (14) attached thereto and apertures suitable for accommodating the power blades of a piece of electrical equipment, an elastomeric nose (16) abutting the face-plate having a hole for passage of the threaded member therethrough and power blade apertures in registration with those of the face-plate, a block (20) having a recess (34) in its forward face for receiving at least a portion of the hose, a hole therein for receiving the threaded member and an integral extension (26) extending from its rear face. A thumb screw (22) suitable for turning with the hands and having internal threads suitable for engaging the threaded member attached to the face-plate is inserted into a passage in the integral extension to engage the threaded member in such a fashion that when the device is inserted over the recessed power blades of a piece of electrical equipment and the thumb screw (22) tightened, the elastomeric nose (16) is compressed between the face-plate (12) and the block (20) forcing it to expand laterally thereby securing the device in the recess and precluding the accidental or intentional energization of the piece of equipment by attachment of a power cord to the recessed power blades. Means are provided in the interval extension and the thumb screw for the attachment of a locking device (46) which will satisfy OSHA standards.

Gonzales, Rick (Chesapeake, VA)

1999-01-01T23:59:59.000Z

242

Fuel processing for fuel cells: a model for fuel conversion and carbon formation in the adiabatic steam reformer  

SciTech Connect

In present fuel cell power plants the fuel processor is a catalytic steam reformer which is limited to the use of fuels such as naphtha and natural gas. The sulfur content of these feeds must be reduced to low levels by hydrotreatment before contacting the nickel catalyst in the reformer. However, future fuel cell power plants may be required to ue coal-derived liquid fuel or heavy petroleum distillates which are more difficult to hydrotreat and reform. To meet this requirement, an adiabatic steam reformer is being developed by United Technologies Corporation with the support of the Electric Power Research Institute. In the adiabatic reformer, air is added to the process stream to provide, by combustion, the heat for endothermic reforming in a catalyst bed. In the inlet section of the reformer, air and fuel combust, and reforming is initiated on special catalysts whose primary functon is to prevent formation and accumulation of carbon. Following the inlet section, catalysts with high activity for steam reforming complete the conversion of the remaining fuel, principally methane. The objective of the present program is to establish a reactor model for the adiabatic reformer which would predict process stream compositions and temperatures and include carbon formation processes. Progress is reported on the four tasks: (1) determine rate expressions for catalytic reactions occurring in the adiabatic reformer; (2) establish a reactor model to predict process stream compositions in the adiabatic reformer using data from Task 1 for cataytic reactions and data from the literature for homogeneous gas-phase reactions; (3) determine critical conditions for carbon formation on selected catalysts using microbalance experiments; and (4) establish a model to predict carbon formation by combination of the model for process stream composition from Task 2 and data for carbon formation from Task 3. (WHK)

Bett, J.A.S.; Cutlip, M.C.; Foley, P.F.; Lesieur, R.R.; Meyer, A.P.; Sederquist, R.A.; Setzer, H.J.

1981-01-01T23:59:59.000Z

243

Fragment capture device  

DOE Patents (OSTI)

A fragment capture device for use in explosive containment. The device comprises an assembly of at least two rows of bars positioned to eliminate line-of-sight trajectories between the generation point of fragments and a surrounding containment vessel or asset. The device comprises an array of at least two rows of bars, wherein each row is staggered with respect to the adjacent row, and wherein a lateral dimension of each bar and a relative position of each bar in combination provides blockage of a straight-line passage of a solid fragment through the adjacent rows of bars, wherein a generation point of the solid fragment is located within a cavity at least partially enclosed by the array of bars.

Payne, Lloyd R. (Los Lunas, NM); Cole, David L. (Albuquerque, NM)

2010-03-30T23:59:59.000Z

244

Electrochromic optical switching device  

DOE Patents (OSTI)

An electrochromic cell is disclosed which comprises an electrochromic layer, a polymerizable organo-sulfur layer which comprises the counter electrode of the structure, and an ionically conductive electronically insulating material which comprises the separator between the electrodes. In a preferred embodiment, both the separator and the organo-sulfur electrode (in both its charged and uncharged states) are transparent either to visible light or to the entire solar spectrum. An electrochromic device is disclosed which comprises such electrodes and separator encased in glass plates on the inner surface of each of which is formed a transparent electrically conductive film in respective electrical contact with the electrodes which facilitates formation of an external electrical connection or contact to the electrodes of the device to permit electrical connection of the device to an external potential source. 3 figs.

Lampert, C.M.; Visco, S.J.

1992-08-25T23:59:59.000Z

245

Electrochromic optical switching device  

DOE Patents (OSTI)

An electrochromic cell is disclosed which comprises an electrochromic layer, a polymerizable organo-sulfur layer which comprises the counter electrode of the structure, and an ionically conductive electronically insulating material which comprises the separator between the electrodes. In a preferred embodiment, both the separator and the organo-sulfur electrode (in both its charged and uncharged states) are transparent either to visible light or to the entire solar spectrum. An electrochromic device is disclosed which comprises such electrodes and separator encased in glass plates on the inner surface of each of which is formed a transparent electrically conductive film in respective electrical contact with the electrodes which facilitates formation of an external electrical connection or contact to the electrodes of the device to permit electrical connection of the device to an external potential source.

Lampert, Carl M. (El Sobrante, CA); Visco, Steven J. (Berkeley, CA)

1992-01-01T23:59:59.000Z

246

Ion manipulation device  

DOE Patents (OSTI)

An ion manipulation method and device is disclosed. The device includes a pair of substantially parallel surfaces. An array of inner electrodes is contained within, and extends substantially along the length of, each parallel surface. The device includes a first outer array of electrodes and a second outer array of electrodes. Each outer array of electrodes is positioned on either side of the inner electrodes, and is contained within and extends substantially along the length of each parallel surface. A DC voltage is applied to the first and second outer array of electrodes. A RF voltage, with a superimposed electric field, is applied to the inner electrodes by applying the DC voltages to each electrode. Ions either move between the parallel surfaces within an ion confinement area or along paths in the direction of the electric field, or can be trapped in the ion confinement area.

Anderson, Gordon A; Smith, Richard D; Ibrahim, Yehia M; Baker, Erin M

2014-09-16T23:59:59.000Z

247

Nonaqueous Electrical Storage Device  

DOE Patents (OSTI)

An electrochemical capacitor is disclosed that features two, separated, high surface area carbon cloth electrodes sandwiched between two current collectors fabricated of a conductive polymer having a flow temperature greater than 130.degree. C., the perimeter of the electrochemical capacitor being sealed with a high temperature gasket to form a single cell device. The gasket material is a thermoplastic stable at temperatures greater than 100.degree. C., preferably a polyester or a polyurethane, and having a reflow temperature above 130.degree. C. but below the softening temperature of the current collector material. The capacitor packaging has good mechanical integrity over a wide temperature range, contributes little to the device equivalent series resistance (ESR), and is stable at high potentials. In addition, the packaging is designed to be easily manufacturable by assembly line methods. The individual cells can be stacked in parallel or series configuration to reach the desired device voltage and capacitance.

McEwen, Alan B. (Melrose, MA); Evans, David A. (Seekonk, MA); Blakley, Thomas J. (Woburn, MA); Goldman, Jay L. (Mansfield, MA)

1999-10-26T23:59:59.000Z

248

Maximizing efficiency of solar-powered systems by load matching  

Science Journals Connector (OSTI)

Solar power is an important source of renewable energy for many low-power systems. Matching the power consumption level with the supply level can make a great difference in the efficiency of power utilization. This paper proposes a source-tracking power ... Keywords: load matching, photovoltaics, power management, power model, solar energy, solar-aware

Dexin Li; Pai H. Chou

2004-08-01T23:59:59.000Z

249

DUK - A Fast and Efficient Kmer Based Sequence Matching Tool  

SciTech Connect

A new tool, DUK, is developed to perform matching task. Matching is to find whether a query sequence partially or totally matches given reference sequences or not. Matching is similar to alignment. Indeed many traditional analysis tasks like contaminant removal use alignment tools. But for matching, there is no need to know which bases of a query sequence matches which position of a reference sequence, it only need know whether there exists a match or not. This subtle difference can make matching task much faster than alignment. DUK is accurate, versatile, fast, and has efficient memory usage. It uses Kmer hashing method to index reference sequences and Poisson model to calculate p-value. DUK is carefully implemented in C++ in object oriented design. The resulted classes can also be used to develop other tools quickly. DUK have been widely used in JGI for a wide range of applications such as contaminant removal, organelle genome separation, and assembly refinement. Many real applications and simulated dataset demonstrate its power.

Li, Mingkun; Copeland, Alex; Han, James

2011-03-21T23:59:59.000Z

250

Precision alignment device  

DOE Patents (OSTI)

Apparatus for providing automatic alignment of beam devices having an associated structure for directing, collimating, focusing, reflecting, or otherwise modifying the main beam. A reference laser is attached to the structure enclosing the main beam producing apparatus and produces a reference beam substantially parallel to the main beam. Detector modules containing optical switching devices and optical detectors are positioned in the path of the reference beam and are effective to produce an electrical output indicative of the alignment of the main beam. This electrical output drives servomotor operated adjustment screws to adjust the position of elements of the structure associated with the main beam to maintain alignment of the main beam. 5 figs.

Jones, N.E.

1988-03-10T23:59:59.000Z

251

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

252

Complementary Chemistry and Matched Materials | Department of Energy  

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

Complementary Chemistry and Matched Materials Complementary Chemistry and Matched Materials Complementary Chemistry and Matched Materials November 15, 2013 - 1:45pm Addthis DNA linkers allow different kinds of nanoparticles to self-assemble and form relatively large-scale nanocomposite arrays. This approach allows for mixing and matching components for the design of multifunctional materials. | Image courtesy of Brookhaven National Laboratory. DNA linkers allow different kinds of nanoparticles to self-assemble and form relatively large-scale nanocomposite arrays. This approach allows for mixing and matching components for the design of multifunctional materials. | Image courtesy of Brookhaven National Laboratory. Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What are the key facts?

253

Device Oriented Project Controller  

SciTech Connect

This proposal is directed at the issue of developing control systems for very large HEP projects. A de-facto standard in accelerator control is the Experimental Physics and Industrial Control System (EPICS), which has been applied successfully to many physics projects. EPICS is a channel based system that requires that each channel of each device be configured and controlled. In Phase I, the feasibility of a device oriented extension to the distributed channel database was demonstrated by prototyping a device aware version of an EPICS I/O controller that functions with the current version of the channel access communication protocol. Extensions have been made to the grammar to define the database. Only a multi-stage position controller with limit switches was developed in the demonstration, but the grammar should support a full range of functional record types. In phase II, a full set of record types will be developed to support all existing record types, a set of process control functions for closed loop control, and support for experimental beam line control. A tool to configure these records will be developed. A communication protocol will be developed or extensions will be made to Channel Access to support introspection of components of a device. Performance bench marks will be made on both communication protocol and the database. After these records and performance tests are under way, a second of the grammar will be undertaken.

Dalesio, Leo; Kraimer, Martin

2013-11-20T23:59:59.000Z

254

Condensate removal device  

DOE Patents (OSTI)

A condensate removal device is disclosed which incorporates a strainer in unit with an orifice. The strainer is cylindrical with its longitudinal axis transverse to that of the vapor conduit in which it is mounted. The orifice is positioned inside the strainer proximate the end which is remoter from the vapor conduit.

Maddox, James W. (Newport News, VA); Berger, David D. (Alexandria, VA)

1984-01-01T23:59:59.000Z

255

Solar Innovator | Alta Devices  

SciTech Connect

Selected to participate in the Energy Department's SunShot Initiative, Alta Devices produces solar cells that convert sunlight into electricity at world record-breaking levels of efficiency. Through its innovative solar technology Alta is helping bring down the cost of solar. Learn more about the Energy Department's efforts to advance solar technology at energy.gov/solar .

Mattos, Laila; Le, Minh

2012-01-01T23:59:59.000Z

256

Multiple gap photovoltaic device  

DOE Patents (OSTI)

A multiple gap photovoltaic device having a transparent electrical contact adjacent a first cell which in turn is adjacent a second cell on an opaque electrical contact, includes utilizing an amorphous semiconductor as the first cell and a crystalline semiconductor as the second cell.

Dalal, Vikram L. (Newark, DE)

1981-01-01T23:59:59.000Z

257

Substrate structures for InP-based devices  

SciTech Connect

A substrate structure for an InP-based semiconductor device having an InP based film is described. The substrate structure includes a substrate region having a lightweight bulk substrate and an upper GaAs layer. An interconnecting region is disposed between the substrate region and the InP-based device. The interconnecting region includes a compositionally graded intermediate layer substantially lattice-matched at the opposite end to the InP=based film. The interconnecting region further includes a dislocation mechanism disposed between the GaAs layer and the InP-based film in cooperation with the graded intermediate layer, the buffer mechanism blocking and inhibiting propagation of threading dislocations between the substrate region, and the InP-based device.

Wanlass, M.W.; Sheldon, P.

1990-10-16T23:59:59.000Z

258

Analysis of non-adiabatic heat-recirculating combustors Paul D. Ronney  

E-Print Network (OSTI)

combustion are discussed. #12;1 Introduction Recently interest in heat-recirculating "excess enthalpy times more energy per unit mass than lithium-ion batteries, thus devices converting of fuel

259

Gunshot triangulation device testing  

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

Gunshot triangulation device testing Gunshot triangulation device testing Report to the Fermilab Community Advisory Board, Oct. 28, 2010 The Fermilab security director outlined for the board last month a recurring problem of people shooting guns near the edges of the laboratory and bullets coming onto the site. Fermilab is installing a system to triangulate the gunshots to improve police response time. This will require a set-up calibration of two dozen gunshots during a total of 6 minutes at the laboratory site. The board was asked for recommendations about how and whom to inform of the test firing. In response to the board discussion, Fermilab plans to take the following actions: ï‚· The test firing will occur during the mid-day of a week day to minimize the number of residents

260

Dielectrokinetic chromatography devices  

DOE Patents (OSTI)

Disclosed herein are methods and devices for dielectrokinetic chromatography. As disclosed, the devices comprise microchannels having at least one perturber which produces a non-uniformity in a field spanning the width of the microchannel. The interaction of the field non-uniformity with a perturber produces a secondary flow which competes with a primary flow. By decreasing the size of the perturber the secondary flow becomes significant for particles/analytes in the nanometer-size range. Depending on the nature of a particle/analyte present in the fluid and its interaction with the primary flow and the secondary flow, the analyte may be retained or redirected. The composition of the primary flow can be varied to affect the magnitude of primary and/or secondary flows on the particles/analytes and thereby separate and concentrate it from other particles/analytes.

Chirica, Gabriela S; Fiechtner, Gregory J; Singh, Anup K

2014-12-16T23:59:59.000Z

Note: This page contains sample records for the topic "adiabatic matching device" 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

Light modulating device  

DOE Patents (OSTI)

In a device for transmitting light, means for controlling the transmissivity of the device, including a ceramic, reversibly electrochromic, crystalline element having a highly reflective state when injected with electrons and charge compensating ions and a highly transmissive state when the electrons and ions are removed, the crystalline element being characterized as having a reflectivity of at least 50% in the reflective state and not greater than 10% in the transmissive state, and means for modulating the crystalline element between the reflective and transmissive states by injecting ions into the crystalline element in response to an applied electrical current of a first polarity and removing the ions in response to an applied electrical current of a second polarity.

Rauh, R. David (Newton, MA); Goldner, Ronald B. (Lexington, MA)

1989-01-01T23:59:59.000Z

262

Light modulating device  

DOE Patents (OSTI)

In a device for transmitting light, means for controlling the transmissivity of the device, including a ceramic, reversibly electrochromic, crystalline element having a highly reflective state when injected with electrons and charge compensating ions and a highly transmissive state when the electrons and ions are removed, the crystalline element being characterized as having a reflectivity of at least 50% in the reflective state and not greater than 10% in the transmissive state, and means for modulating the crystalline element between the reflective and transmissive states by injecting ions into the crystalline element in response to an applied electrical current of a first polarity and removing the ions in response to an applied electrical current of a second polarity are disclosed. 1 fig.

Rauh, R.D.; Goldner, R.B.

1989-12-26T23:59:59.000Z

263

Support and maneuvering device  

DOE Patents (OSTI)

A support and maneuvering device includes an elongated flexible inflatable enclosure having a fixed end and a movable end. The movable end is collapsible toward the fixed end to a contracted position when the enclosure is in a noninflated condition. Upon inflation, the movable end is movable away from the fixed end to an extended position. The movable end includes means for mounting an article such as a solar reflector thereon. The device also includes a plurality of position controlling means disposed about the movable end to effect adjusting movement of portions thereof by predetermined amounts and for controlling an angle at which the article disposed at the movable end is oriented. The plurality of position controlling means limits a suitable number degrees of freedom of the movable end for transmitting a steering motion thereto and for controlling the position thereof. 9 figs.

Wood, R.L.

1987-03-23T23:59:59.000Z

264

Wire brush fastening device  

DOE Patents (OSTI)

A fastening device is provided which is a variation on the conventional nut and bolt. The bolt has a longitudinal axis and threading helically affixed thereon along the longitudinal axis. A nut having a bore extending therethrough is provided. The bore of the nut has a greater diameter than the diameter of the bolt so the bolt can extend through the bore. An array of wire bristles are affixed within the bore so as to form a brush. The wire bristles extend inwardly from the bore and are constructed and arranged of the correct size, length and stiffness to guide the bolt within the bore and to restrain the bolt within the bore as required. A variety of applications of the wire brush nut are disclosed, including a bolt capture device and a test rig apparatus. 13 figs.

Meigs, R.A.

1995-09-19T23:59:59.000Z

265

Support and maneuvering device  

DOE Patents (OSTI)

A support and maneuvering device includes an elongated flexible inflatable enclosure having a fixed end and a movable end. The movable end is collapsible toward the fixed end to a contracted position when the enclosure is in a noninflated condition. Upon inflation, the movable end is movable away from the fixed end to an extended position. The movable end includes means for mounting an article such as a solar reflector thereon. The device also includes a plurality of position controlling means disposed about the movable end to effect adjusting movement of portions thereof by predetermined amounts and for controlling an angle at which the article disposed at the movable end is oriented. The plurality of position controlling means limits a suitable number degrees of freedom of the movable end for transmitting a steering motion thereto and for controlling the position thereof.

Wood, Richard L. (Arvada, CO)

1988-01-01T23:59:59.000Z

266

Residual gas analysis device  

DOE Patents (OSTI)

A system is provided for testing the hermeticity of a package, such as a microelectromechanical systems package containing a sealed gas volume, with a sampling device that has the capability to isolate the package and breach the gas seal connected to a pulse valve that can controllably transmit small volumes down to 2 nanoliters to a gas chamber for analysis using gas chromatography/mass spectroscopy diagnostics.

Thornberg, Steven M. (Peralta, NM)

2012-07-31T23:59:59.000Z

267

Non-adiabatic ab initio molecular dynamics of supersonic beam epitaxy of silicon carbide at room temperature  

SciTech Connect

In this work, we investigate the processes leading to the room-temperature growth of silicon carbide thin films by supersonic molecular beam epitaxy technique. We present experimental data showing that the collision of fullerene on a silicon surface induces strong chemical-physical perturbations and, for sufficient velocity, disruption of molecular bonds, and cage breaking with formation of nanostructures with different stoichiometric character. We show that in these out-of-equilibrium conditions, it is necessary to go beyond the standard implementations of density functional theory, as ab initio methods based on the Born-Oppenheimer approximation fail to capture the excited-state dynamics. In particular, we analyse the Si-C{sub 60} collision within the non-adiabatic nuclear dynamics framework, where stochastic hops occur between adiabatic surfaces calculated with time-dependent density functional theory. This theoretical description of the C{sub 60} impact on the Si surface is in good agreement with our experimental findings.

Taioli, Simone [Interdisciplinary Laboratory for Computational Science, FBK-Center for Materials and Microsystems and University of Trento, Trento (Italy); Department of Physics, University of Trento, Trento (Italy); Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (Italy); Department of Chemistry, University of Bologna, Bologna (Italy); Garberoglio, Giovanni [Interdisciplinary Laboratory for Computational Science, FBK-Center for Materials and Microsystems and University of Trento, Trento (Italy); Simonucci, Stefano [Interdisciplinary Laboratory for Computational Science, FBK-Center for Materials and Microsystems and University of Trento, Trento (Italy); Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (Italy); Department of Physics, University of Camerino, Camerino (Italy); Beccara, Silvio a [Interdisciplinary Laboratory for Computational Science, FBK-Center for Materials and Microsystems and University of Trento, Trento (Italy); Department of Physics, University of Trento, Trento (Italy); Aversa, Lucrezia [Institute of Materials for Electronics and Magnetism, IMEM-CNR, Trento (Italy); Nardi, Marco [Institute of Materials for Electronics and Magnetism, IMEM-CNR, Trento (Italy); Institut fuer Physik, Humboldt-Universitaet zu Berlin, Berlin (Germany); Verucchi, Roberto [Institute of Materials for Electronics and Magnetism, FBK-CNR, Trento (Italy); Iannotta, Salvatore [Institute of Materials for Electronics and Magnetism, IMEM-CNR, Parma (Italy); Dapor, Maurizio [Interdisciplinary Laboratory for Computational Science, FBK-Center for Materials and Microsystems and University of Trento, Trento (Italy); Department of Materials Engineering and Industrial Technologies, University of Trento, Trento (Italy); Istituto Nazionale di Fisica Nucleare, Sezione di Padova (Italy); and others

2013-01-28T23:59:59.000Z

268

THE ADIABATIC DEMAGNETIZATION REFRIGERATOR FOR THE MICRO-X SOUNDING ROCKET TELESCOPE  

SciTech Connect

The Micro-X Imaging X-ray Spectrometer is a sounding rocket payload slated for launch in 2011. An array of Transition Edge Sensors, which is operated at a bath temperature of 50 mK, will be used to obtain a high resolution spectrum of the Puppis-A supernova remnant. An Adiabatic Demagnetization Refrigerator (ADR) with a 75 gram Ferric Ammonium Alum (FAA) salt pill in the bore of a 4 T superconducting magnet provides a stable heat sink for the detector array only a few seconds after burnout of the rocket motors. This requires a cold stage design with very short thermal time constants. A suspension made from Kevlar strings holds the 255 gram cold stage in place. It is capable of withstanding loads in excess of 200 g. Stable operation of the TES array in proximity to the ADR magnet is ensured by a three-stage magnetic shielding system which consists of a superconducting can, a high-permeability shield and a bucking coil. The development and testing of the Micro-X payload is well underway.

Wikus, P.; Bagdasarova, Y.; Figueroa-Feliciano, E.; Leman, S. W.; Rutherford, J. M.; Trowbridge, S. N. [Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Adams, J. S.; Bandler, S. R.; Eckart, M. E.; Kelley, R. L.; Kilbourne, C. A.; Porter, F. S. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Doriese, W. B. [National Institute of Standards and Technology, Boulder, CO 80305 (United States); McCammon, D. [University of Wisconsin, Madison, WI 53706 (United States)

2010-04-09T23:59:59.000Z

269

Impact of orbital motion on the structure and stability of adiabatic shocks in colliding wind binaries  

E-Print Network (OSTI)

The collision of winds from massive stars in binaries results in the formation of a double-shock structure with observed signatures from radio to X-rays. We study the structure and stability of the colliding wind region as it turns into a spiral due to orbital motion. We focus on adiabatic winds, where mixing between the two winds is expected to be restricted to the Kelvin-Helmholtz instability (KHI). Mixing of the Wolf-Rayet wind with hydrogen-rich material is important for dust formation in pinwheel nebulae such as WR 104, where the spiral structure has been resolved in infrared. We use the hydrodynamical code RAMSES with an adaptive grid. A wide range of binary systems with different wind velocities and mass loss rates are studied with 2D simulations. A specific 3D simulation is performed to model WR 104. Orbital motion leads to the formation of two distinct spiral arms where the KHI develops differently. We find that the spiral structure is destroyed when there is a large velocity gradient between the win...

Lamberts, Astrid; Lesur, Geoffroy; Fromang, Sebastien

2012-01-01T23:59:59.000Z

270

Second law analysis of water flow through smooth microtubes under adiabatic conditions  

SciTech Connect

In the study, a second law analysis for a steady-laminar flow of water in adiabatic microtubes has been conducted. Smooth microtubes with the diameters between 50 and 150 {mu}m made of fused silica were used in the experiments. Considerable temperature rises due to viscous dissipation and relatively high pressure losses of flow were observed in experiments. To identify irreversibility of flow, rate of entropy generation from the experiments have been determined in the laminar flow range of Re = 20-2200. The second law of thermodynamics was applied to predict the entropy generation. The results of model taken from the literature, proposed to predict the temperature rise caused by viscous heating, correspond well with the experimental data. The second law analysis results showed that the flow characteristics in the smooth microtubes distinguish substantially from the conventional theory for flow in the larger tubes with respect to viscous heating/dissipation (temperature rise of flow) total entropy generation rate and lost work. (author)

Parlak, Nezaket; Guer, Mesut; Ari, Vedat; Kuecuek, Hasan; Engin, Tahsin [The University of Sakarya, Faculty of Engineering, Department of Mechanical Engineering, Esentepe Campus, 54187 Sakarya (Turkey)

2011-01-15T23:59:59.000Z

271

Hot-film anemometer measurements in adiabatic two-phase flow through a vertical duct  

SciTech Connect

A hot-film anemometer (HFA) probe was used to obtain local measurements of void fraction and bubble frequency in a vertically oriented, high aspect ratio duct containing R-134a under selected adiabatic two-phase flow conditions. Data were obtained along a narrow dimension scan over the range 0.03 {le} {bar Z} {le} 0.80, where {bar Z} is the distance from the wall normalized with the duct spacing dimension. The void fraction profiles displayed large gradients in the near-wall regions and broad maxima near the duct centerline. The trends in the bubble frequency data generally follow those for the local void fraction data. However, the relatively large number of bubbles at higher pressure implies a larger magnitude of the interfacial area concentration, for the same cross-sectional average void fraction. For the two annular flow conditions tested, analysis of the HFA output voltage signal enabled identification of three distinct regions of the flow field; liquid film with dispersed bubbles, interfacial waves, and continuous vapor with dispersed droplets.

Trabold, T.A.; Moore, W.E.; Morris, W.O. [Lockheed Martin Corp., Schenectady, NY (United States)

1997-06-01T23:59:59.000Z

272

Implementing Lottery Scheduling: Matching the Specializations in Traditional Schedulers  

E-Print Network (OSTI)

present in traditional non- real time process schedulers. Lottery scheduling enables flexible control over this while maintaining lottery scheduling's flexible control over relative execution rates and loadImplementing Lottery Scheduling: Matching the Specializations in Traditional Schedulers David

273

MATCH: Metadata Access Tool for Climate and Health Datasets  

DOE Data Explorer (OSTI)

MATCH is a searchable clearinghouse of publicly available Federal metadata (i.e. data about data) and links to datasets. Most metadata on MATCH pertain to geospatial data sets ranging from local to global scales. The goals of MATCH are to: 1) Provide an easily accessible clearinghouse of relevant Federal metadata on climate and health that will increase efficiency in solving research problems; 2) Promote application of research and information to understand, mitigate, and adapt to the health effects of climate change; 3) Facilitate multidirectional communication among interested stakeholders to inform and shape Federal research directions; 4) Encourage collaboration among traditional and non-traditional partners in development of new initiatives to address emerging climate and health issues. [copied from http://match.globalchange.gov/geoportal/catalog/content/about.page

274

Interoperable Semantic & Syntactic Service Matching for Ambient Computing Environments  

E-Print Network (OSTI)

. For service discovery protocols (SDP), one of the main functions of service-oriented architectures (SOA this purpose, the Service- Oriented Architecture (SOA) computing paradigm is particularly appropriate environments. Keywords: Service-oriented ambient computing, service discovery, matching and ranking

Paris-Sud XI, Université de

275

Review Paper. Matching marine reserve design to reserve objectives  

Science Journals Connector (OSTI)

...resource management|biodiversity conservation|marine protected | Matching marine...Getting to the bottom of marine biodiversity: sedimentary habitats...approach to conserving marine biodiversity. Conserv. Biol. 14...

2003-01-01T23:59:59.000Z

276

Matching Wits with Melanoma Brain Metastases: From Biology to Therapeutics  

Science Journals Connector (OSTI)

...Translations Matching Wits with Melanoma Brain Metastases: From Biology to Therapeutics...Pittsburgh, Pennsylvania. Melanoma brain metastases (MBM) present a significant...extensive molecular profiling of melanoma brain metastases (MBM), including a set of...

Hussein Tawbi

2014-11-01T23:59:59.000Z

277

ON THE DIFFERENT ANALYTICAL RESULTS OBTAINED FOR THE PARALLEL DIFFUSION COEFFICIENT OF COSMIC PARTICLES WITH ADIABATIC FOCUSING  

SciTech Connect

A spatially varying mean magnetic field gives rise to so-called adiabatic focusing of energetic particles propagating through the universe. In the past, different analytical approaches have been proposed to calculate the particle diffusion coefficient along the mean field with focusing. In the present paper, we show how these different results are related to each other. New results for the parallel diffusion coefficient that are more general than previous results are also presented.

Shalchi, A.; Danos, R. J., E-mail: andreasm4@yahoo.com [Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada)

2013-03-10T23:59:59.000Z

278

Adiabatic Channel Capture Theory Applied to Cold Atom-Molecule Reactions: Li + CaH -> LiH + Ca at 1 K  

E-Print Network (OSTI)

We use quantum and classical adiabatic capture theories to study the chemical reaction Li + CaH -> LiH + Ca. Using a recently developed ab initio potential energy surface, which provides an accurate representation of long-range interactions in the entrance reaction channel, we calculate the adiabatic channel potentials by diagonalizing the atom-molecule Hamiltonian as a function of the atom-molecule separation. The resulting adiabatic channel potentials are used to calculate both the classical and quantum capture probabilities as a function of collision energy, as well as the temperature dependencies of the partial and total reaction rates. The calculated reaction rate agrees well with the measured value at 1 K [V. Singh et al., Phys. Rev. Lett. 108, 203201 (2012)], suggesting that the title reaction proceeds without an activation barrier. The calculated classical adiabatic capture rate agrees well with the quantum result in the multiple partial wave regime of relevance to the experiment. Significant differen...

Tscherbul, Timur V

2014-01-01T23:59:59.000Z

279

Energy Management on Handheld Devices  

Science Journals Connector (OSTI)

Handheld devices are becoming ubiquitous and as their capabilities increase, they are starting to displace laptop computers - much as laptop computers have displaced desktop computers in many roles. Handheld devices are evolving from today's PDAs, organizers, ...

Marc A Viredaz; Lawrence S Brakmo; William R Hamburgen

2003-10-01T23:59:59.000Z

280

Broadband calibrated scattering parameters characterization of a superconducting quantum interference device amplifier  

SciTech Connect

In this work, we characterize the 2-port scattering parameters of a superconducting quantum interference device amplifier at {approx}20 mK over several gigahertz of bandwidth. The measurement reference plane is positioned on a 6.25 {Omega} microstrip line situated directly at the input and output of the device by means of a thru-reflect-line cryogenic calibration procedure. From the scattering parameters, we derive the device available power gain, isolation, and input impedance over the 2-8 GHz range. This measurement methodology provides a path towards designing wide-band matching circuits for low impedance superconducting amplifiers operating at dilution refrigerator temperatures.

Ranzani, Leonardo [National Institute of Standards and Technology, Boulder, Colorado 80305 (United States); University of Colorado at Boulder, Boulder, Colorado 80309 (United States); Spietz, Lafe; Aumentado, Jose [National Institute of Standards and Technology, Boulder, Colorado 80305 (United States)

2013-07-08T23:59:59.000Z

Note: This page contains sample records for the topic "adiabatic matching device" 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

Effect of thesaurus size on schema matching quality  

Science Journals Connector (OSTI)

Abstract Thesaurus is used in many Information Retrieval (IR) applications such as data integration, data warehousing, semantic query processing and schema matching. Schema matching or mapping is one of the most important basic steps in data integration. It is the process of identifying the semantic correspondence or equivalent between two or more schemas. Considering the fact of the existence of many thesauri for identical knowledge domain, the quality and the change in the results of schema matching when using different thesauri in specific knowledge field are not predictable. In this research, we studied the effect of thesaurus size on schema matching quality by conducting many experiments using different thesauri. In addition, a new method in calculating the similarity between vectors extracted from thesaurus database is proposed. The method is based on the ratio of individual shared elements to the elements in the compound set of the vectors. Moreover, we explained in details the efficient algorithm used in searching thesaurus database. After describing the experiments, results that show enhancement in the average of the similarity is presented. The completeness, effectiveness, and their harmonic mean measures were calculated to quantify the quality of matching. Experiments on two different thesauri show positive results with average Precision of 35% and a less value in the average of Recall. The effect of thesaurus size on the quality of matching was statically insignificant; however, other factors affecting the output and the exact value of change are still in the focus of our future study.

Thabit Sabbah; Ali Selamat; Mahmood Ashraf; Tutut Herawan

2014-01-01T23:59:59.000Z

282

Born–Oppenheimer breakdown and non-adiabatic lifetimes of rovibrational levels of D2 lying near the n = 2 dissociation limit: Experiment and theory  

Science Journals Connector (OSTI)

The singlet gerade states of the hydrogen molecule are strongly affected by the breakdown of the Born–Oppenheimer approximation. This leads to strong non-adiabatic coupling resulting in large changes of the energies and lifetimes of the quantum levels compared to the values obtained in the Born–Oppenheimer or even the adiabatic levels of approximation. The non-adiabatic calculations of Quadrelli, Dressler, and Wolniewicz (1990) [7] (hereinafter QDW) for the three highest vibrational levels (? = 44, 45, and 46) of the EF 1?g+ state of D2 predicted an enormous increase of the lifetimes upon excitation of just one quantum of rotational motion. However, although our experimental results for these levels just below the n = 2 dissociation limit do show a strong increase in lifetime, the non-adiabatic lifetimes calculated by QDW are longer than experiment by as much as three orders of magnitude. In their work on isotopomers of hydrogen QDW and Yu and Dressler (1994) [5] published extensive summary tables of ab initio non-adiabatic coupling data. We present a technique which allows us to use their summary data to calculate approximate non-adiabatic ab initio lifetimes. The results reconcile our observed lifetimes with the non-adiabatic coupling from those previous ab initio calculations and also provide a detailed quantitative and qualitative understanding of the unusual rotational dependence of the lifetimes of these very highly excited levels. We also test the current technique by calculating the lifetimes of other levels involved in interactions with these EF levels and by calculating the lifetimes of the EF ? = 33 level of H2, for which no corresponding level exists in the Born–Oppenheimer or adiabatic approximations.

Stephen C. Ross; Koichi Tsukiyama

2011-01-01T23:59:59.000Z

283

High-Efficiency Solar Cell Concepts: Physics, Materials, and Devices  

SciTech Connect

Over the past three decades, significant progress has been made in the area of high-efficiency multijunction solar cells, with the effort primarily directed at current-matched solar cells in tandem. The key materials issues here have been obtaining semiconductors with the required bandgaps for sequential absorption of light in the solar spectrum and that are lattice matched to readily available substrates. The GaInP/GaAs/Ge cell is a striking example of success achieved in this area. Recently, several new approaches for high-efficiency solar cell design have emerged, that involve novel methods for tailoring alloy bandgaps, as well as alternate technologies for hetero-epitaxy of III-V's on Si. The advantages and difficulties expected to be encountered with each approach will be discussed, addressing both the materials issues and device physics whilst contrasting them with other fourth-generation solar cell concepts.

Mascarenhas, A.; Francoeur, S.; Seong, M. J.; Fluegel, B.; Zhang, Y.; Wanlass, M. W.

2005-01-01T23:59:59.000Z

284

Design and evaluation of an advanced adiabatic compressed air energy storage system at the Michigan-Utah mine.  

E-Print Network (OSTI)

??Compressed air energy storage (CAES) is considered a viable option for matching intermittent sustainable energy and the production of peak electrical demand. Economic advantages of… (more)

Beeman, Michael G

2010-01-01T23:59:59.000Z

285

Nanotube resonator devices  

DOE Patents (OSTI)

A fully-functional radio receiver fabricated from a single nanotube is being disclosed. Simultaneously, a single nanotube can perform the functions of all major components of a radio: antenna, tunable band-pass filter, amplifier, and demodulator. A DC voltage source, as supplied by a battery, can power the radio. Using carrier waves in the commercially relevant 40-400 MHz range and both frequency and amplitude modulation techniques, successful music and voice reception has been demonstrated. Also disclosed are a radio transmitter and a mass sensor using a nanotube resonator device.

Jensen, Kenneth J; Zettl, Alexander K; Weldon, Jeffrey A

2014-05-06T23:59:59.000Z

286

Radiography Device | Department of Energy  

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

Radiography Device Radiography Device Radiography Device This scenario provides the planning instructions, guidance, and evaluation forms necessary to conduct an exercise involving a highway shipment of a radiography device (Class 7 - Radioactive). This exercise manual is one in a series of five scenarios developed by the Department of Energy Transportation Emergency Preparedness Program. Responding agencies may include several or more of the following: local municipal and county fire, police, sheriff, and Emergency Medical Services (EMS) personnel; state, local, and federal emergency response teams; emergency response contractors; and other emergency response resources that could potentially be provided by the carrier and the originating facility (shipper). Radiography Device.docx

287

Stretchable and foldable electronic devices  

DOE Patents (OSTI)

Disclosed herein are stretchable, foldable and optionally printable, processes for making devices and devices such as semiconductors, electronic circuits and components thereof that are capable of providing good performance when stretched, compressed, flexed or otherwise deformed. Strain isolation layers provide good strain isolation to functional device layers. Multilayer devices are constructed to position a neutral mechanical surface coincident or proximate to a functional layer having a material that is susceptible to strain-induced failure. Neutral mechanical surfaces are positioned by one or more layers having a property that is spatially inhomogeneous, such as by patterning any of the layers of the multilayer device.

Rogers, John A; Huang, Yonggang; Ko, Heung Cho; Stoykovich, Mark; Choi, Won Mook; Song, Jizhou; Ahn, Jong Hyun; Kim, Dae Hyeong

2014-12-09T23:59:59.000Z

288

Stretchable and foldable electronic devices  

DOE Patents (OSTI)

Disclosed herein are stretchable, foldable and optionally printable, processes for making devices and devices such as semiconductors, electronic circuits and components thereof that are capable of providing good performance when stretched, compressed, flexed or otherwise deformed. Strain isolation layers provide good strain isolation to functional device layers. Multilayer devices are constructed to position a neutral mechanical surface coincident or proximate to a functional layer having a material that is susceptible to strain-induced failure. Neutral mechanical surfaces are positioned by one or more layers having a property that is spatially inhomogeneous, such as by patterning any of the layers of the multilayer device.

2013-10-08T23:59:59.000Z

289

Fluid flow monitoring device  

DOE Patents (OSTI)

A flow meter and temperature measuring device are described comprising a tube with a body centered therein for restricting flow and a sleeve at the upper end of the tube to carry several channels formed longitudinally in the sleeve to the appropriate axial location where they penetrate the tube to allow pressure measurements and temperature measurements with thermocouples. The high pressure measurement is made using a channel penetrating the tube away from the body and the low pressure measurement is made at a location at the widest part of the body. An end plug seals the end of the device and holes at its upper end allow fluid to pass from the interior of the tube into a plenum. The channels are made by cutting grooves in the sleeve, the grooves widened at the surface of the sleeve and then a strip of sleeve material is welded to the grooves closing the channels. Preferably the sleeve is packed with powdered graphite before cutting the grooves and welding the strips. 7 figures.

McKay, M.D.; Sweeney, C.E.; Spangler, B.S. Jr.

1993-11-30T23:59:59.000Z

290

Fluid flow monitoring device  

DOE Patents (OSTI)

A flow meter and temperature measuring device comprising a tube with a body centered therein for restricting flow and a sleeve at the upper end of the tube to carry several channels formed longitudinally in the sleeve to the appropriate axial location where they penetrate the tube to allow pressure measurements and temperature measurements with thermocouples. The high pressure measurement is made using a channel penetrating the tube away from the body and the low pressure measurement is made at a location at the widest part of the body. An end plug seals the end of the device and holes at its upper end allow fluid to pass from the interior of the tube into a plenum. The channels are made by cutting grooves in the sleeve, the grooves widened at the surface of the sleeve and then a strip of sleeve material is welded to the grooves closing the channels. Preferably the sleeve is packed with powdered graphite before cutting the grooves and welding the strips.

McKay, Mark D. (1426 Socastee Dr., North Augusta, SC 29841); Sweeney, Chad E. (3600 Westhampton Dr., Martinez, GA 30907-3036); Spangler, Jr., B. Samuel (2715 Margate Dr., Augusta, GA 30909)

1993-01-01T23:59:59.000Z

291

E-Print Network 3.0 - assisted history matching Sample Search...  

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

and Information Sciences 9 Modeling, History Matching, Forecasting and Analysis of Shale Reservoirs Performance Using Artificial Intelligence Summary: . The history matched...

292

Antimony Based III-V Thermophotovoltaic Devices  

SciTech Connect

Antimony-based III-V thermophotovoltaic (TPV) cells are attractive converters for systems with low radiator temperature around 1100 to 1700 K, since these cells potentially can be spectrally matched to the thermal source. Cells under development include GaSb and the lattice-matched GaInAsSb/GaSb and InPAsSb/InAs quaternary systems. GaSb cell technology is the most mature, owing in part to the relative ease in preparation of the binary alloy compared to quaternary GaInAsSb and InPAsSb alloys. Device performance of 0.7-eV GaSb cells exceeds 90% of the practical limit. GaInAsSb TPV cells have been the primary focus of recent research, and cells with energy gap E{sub g} ranging from {approx}0.6 to 0.49 eV have been demonstrated. Quantum efficiency and fill factor approach theoretical limits. Open-circuit voltage factor is as high as 87% of the practical limit for the higher-E{sub g} cells, but degrades to below 80% with decreasing E{sub g} of the alloy, which might be due to Auger recombination. InPAsSb cells are the least studied, and a cell with E{sub g} = 0.45-eV has extended spectral response out to 4.3 {micro}m. This paper briefly reviews the main contributions that have been made for antimonide-based TPV cells, and suggests additional studies for further performance enhancements.

CA Wang

2004-06-09T23:59:59.000Z

293

Green Energy Match: Linking Behavioral Energy Savings Programs to Job  

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

Green Energy Match: Linking Behavioral Energy Savings Programs to Job Green Energy Match: Linking Behavioral Energy Savings Programs to Job Creation Speaker(s): Martha Amram Date: October 25, 2011 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Laura Wong Douglas Davenport The "holy grail" of energy efficiency is proving the linkage between job creation to energy-saving actions. While residential home improvements have been the focus of numerous programs - particularly those funded by the American Recovery and Reinvestment Act (ARRA) - this talk introduces an innovative program mounted by the city of San José and WattzOn, a Santa Clara County-based company, to catalyze behavior-based energy savings, and to direct the ensuing increase in household income to local merchants. The program, Green Energy Match (GEM), engages residents in energy savings,

294

Use of adaptive matching filters to improve reservoir definition  

SciTech Connect

Improvements in seismic resolution through better seismic acquisition and processing coupled with geometric improvements provided by 3-D surveys should allow better depiction of reservoir settings. To more fully benefit from these data improvements, is is desirable to translate the seismic acoustic attributes into a form that has more lithologic meaning. Tuning and thin bed effects etc. are automatically taken into account, and the acoustic data rendered into rock terms by matched filtering. The advantage of the present method is that the matching filter is allowed to adapt over time, but only slowly. The result is adaptive filters that give better prediction of lithologic characteristics in areas adjacent to the control data. Slowly adaptive matching filters can provide better prediction of reservoir characteristics between control points (wells). Such techniques are particularly suitable in multiwell settings where it is possible to frequently calibrate the filters.

DuBose, J.B. Jr; Blackwelder, B.

1995-12-31T23:59:59.000Z

295

Fuel vapor control device  

SciTech Connect

A fuel vapor control device is described having a valve opening and closing a passage connecting a carburetor and a charcoal canister according to a predetermined temperature. A first coil spring formed by a ''shape memory effect'' alloy is provided to urge the valve to open the passage when the temperature is high. A second coil spring urges the valve to close the passage. A solenoid is provided to urge an armature against the valve to close the passage against the force of the first coil spring when the engine is running. The solenoid heats the first coil spring to generate a spring force therein when the engine is running. When the engine is turned off, the solenoid is deactivated, and the force of the first spring overcomes the force of the second spring to open the passage until such time as the temperature of the first spring drops below the predetermined temperature.

Ota, I.; Nishimura, Y.; Nishio, S.; Yogo, K.

1987-10-20T23:59:59.000Z

296

Ceramics for fusion devices  

SciTech Connect

Ceramics are required for a number of applications in fusion devices, among the most critical of which are magnetic coil insulators, windows for RF heating systems, and structural uses. Radiation effects dominate consideration of candidate materials, although good pre-irradiation properties are a requisite. Materials and components can be optimized by careful control of chemical and microstructural content, and application of brittle material design and testing techniques. Future directions for research and development should include further extension of the data base in the areas of electrical, structural, and thermal properties; establishment of a fission neutron/fusion neutron correlation including transmutation gas effects; and development of new materials tailored to meet the specific needs of fusion reactors.

Clinard, F.W. Jr.

1984-01-01T23:59:59.000Z

297

False color viewing device  

DOE Patents (OSTI)

This invention consists of a viewing device for observing objects in near-infrared false-color comprising a pair of goggles with one or more filters in the apertures, and pads that engage the face for blocking stray light from the sides so that all light reaching, the user`s eyes come through the filters. The filters attenuate most visible light and pass near-infrared (having wavelengths longer than approximately 700 nm) and a small amount of blue-green and blue-violet (having wavelengths in the 500 to 520 nm and shorter than 435 nm, respectively). The goggles are useful for looking at vegetation to identify different species and for determining the health of the vegetation, and to detect some forms of camouflage.

Kronberg, J.W.

1991-05-08T23:59:59.000Z

298

Electrical safety device  

DOE Patents (OSTI)

An electrical safety device for use in power tools that is designed to automatically discontinue operation of the power tool upon physical contact of the tool with a concealed conductive material. A step down transformer is used to supply the operating power for a disconnect relay and a reset relay. When physical contact is made between the power tool and the conductive material, an electrical circuit through the disconnect relay is completed and the operation of the power tool is automatically interrupted. Once the contact between the tool and conductive material is broken, the power tool can be quickly and easily reactivated by a reset push button activating the reset relay. A remote reset is provided for convenience and efficiency of operation.

White, David B. (Greenock, PA)

1991-01-01T23:59:59.000Z

299

A novel design of dielectric perfect invisibility devices  

Science Journals Connector (OSTI)

The aim of an invisibility device is to guide light around any object put inside being able to hide objects from sight. In this work we propose a novel design of dielectric invisibility media based on negative refraction and optical conformal mapping that seems to create perfect invisibility. This design has some advantages and more relaxed constraints compared with already proposed schemes. In particular it represents an example where the time delay in a dielectric invisibility device is zero. Furthermore due to the impedance matching of negatively refracting materials the reflection should be close to zero. These findings strongly indicate that perfect invisibility with optically isotropic materials is possible. Finally the area of the invisible space is also discussed.

T. Ochiai; U. Leonhardt; J. C. Nacher

2008-01-01T23:59:59.000Z

300

Disposable Electrochemical Immunosensor Diagnosis Device Based...  

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

Disposable Electrochemical Immunosensor Diagnosis Device Based on Nanoparticle Probe and Immunochromatographic Strip. Disposable Electrochemical Immunosensor Diagnosis Device Based...

Note: This page contains sample records for the topic "adiabatic matching device" 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

Alta Devices | Open Energy Information  

Open Energy Info (EERE)

Devices Devices Jump to: navigation, search Name Alta Devices Place Santa Clara, California Zip 95054 Product California-based stealth mode company developing low-cost compound-PV-semiconductors. Website https://www.altadevices.com/ References Alta Devices[1] Information About Partnership with NREL Partnership with NREL Yes Partnership Type Incubator Partnering Center within NREL National Center for Photovoltaics Partnership Year 2010 Link to project description http://www.nrel.gov/news/press/2010/802.html LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Alta Devices is a company located in Santa Clara, California . References ↑ "Alta Devices" Retrieved from

302

Microbiopsy/precision cutting devices  

DOE Patents (OSTI)

Devices are disclosed for performing tissue biopsy on a small scale (microbiopsy). By reducing the size of the biopsy tool and removing only a small amount of tissue or other material in a minimally invasive manner, the risks, costs, injury and patient discomfort associated with traditional biopsy procedures can be reduced. By using micromachining and precision machining capabilities, it is possible to fabricate small biopsy/cutting devices from silicon. These devices can be used in one of four ways (1) intravascularly, (2) extravascularly, (3) by vessel puncture, and (4) externally. Additionally, the devices may be used in precision surgical cutting. 6 figs.

Krulevitch, P.A.; Lee, A.P.; Northrup, M.A.; Benett, W.J.

1999-07-27T23:59:59.000Z

303

Microbiopsy/precision cutting devices  

DOE Patents (OSTI)

Devices for performing tissue biopsy on a small scale (microbiopsy). By reducing the size of the biopsy tool and removing only a small amount of tissue or other material in a minimally invasive manner, the risks, costs, injury and patient discomfort associated with traditional biopsy procedures can be reduced. By using micromachining and precision machining capabilities, it is possible to fabricate small biopsy/cutting devices from silicon. These devices can be used in one of four ways 1) intravascularly, 2) extravascularly, 3) by vessel puncture, and 4) externally. Additionally, the devices may be used in precision surgical cutting.

Krulevitch, Peter A. (Pleasanton, CA); Lee, Abraham P. (Walnut Creek, CA); Northrup, M. Allen (Berkeley, CA); Benett, William J. (Livermore, CA)

1999-01-01T23:59:59.000Z

304

Automated control of microfluidics devices.  

E-Print Network (OSTI)

??In order for microfluidics devices to be marketable, they must be inexpensive and easy to use. Two projects were pursued in this study for this… (more)

Gerstel, Ian.

2010-01-01T23:59:59.000Z

305

Adiabatic description of dissipative processes in heavy-ion reactions and fission. I. Microscopic theory: Statistics of matrix elements  

Science Journals Connector (OSTI)

The statistical properties of matrix elements which couple the collective (or shape) degrees of nuclear motion with the intrinsic degrees of freedom, are evaluated in the adiabatic representation. The results will be used in a future paper for the calculation of transport coefficients which describe the irreversible (dissipative) transfer of energy from the collective degrees of freedom to the intrinsic ones. As input we use a random-matrix model for the residual interaction, and salient properties of single-particle levels in nonspherical potentials.[NUCLEAR REACTIONS Random-matrix model applied to heavy-ion reaction and fission.

M. C. Nemes and Hans. A. Weidenmüller

1981-08-01T23:59:59.000Z

306

Symmetrical windowing for quantum states in quasi-classical trajectory simulations: Application to electronically non-adiabatic processes  

SciTech Connect

A recently described symmetrical windowing methodology [S. J. Cotton and W. H. Miller, J. Phys. Chem. A 117, 7190 (2013)] for quasi-classical trajectory simulations is applied here to the Meyer-Miller [H.-D. Meyer and W. H. Miller, J. Chem. Phys. 70, 3214 (1979)] model for the electronic degrees of freedom in electronically non-adiabatic dynamics. Results generated using this classical approach are observed to be in very good agreement with accurate quantum mechanical results for a variety of test applications, including problems where coherence effects are significant such as the challenging asymmetric spin-boson system.

Cotton, Stephen J.; Miller, William H., E-mail: millerwh@berkeley.edu [Department of Chemistry and Kenneth S. Pitzer Center for Theoretical Chemistry, University of California, Berkeley, and Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

2013-12-21T23:59:59.000Z

307

Complete transfer of populations from a single state to a preselected superposition of states using piecewise adiabatic passage: Experiment  

SciTech Connect

We demonstrate a method of adiabatic population transfer from a single quantum state into a coherent superposition of states. The transfer is executed with femtosecond pulses, spectrally shaped in a simple and intuitive manner, which does not require iterative feedback-controlled loops. In contrast to nonadiabatic methods of excitation, our approach is not sensitive to the exact value of laser intensity. We show that the population transfer is complete, and analyze the possibility of controlling the relative phases and amplitudes of the excited eigenstates. We discuss the limitations of the proposed control methods due to the dynamic level shifts and suggest ways of reducing their influence.

Zhdanovich, S. [Departments of Physics and Astronomy, University of British Columbia, Vancouver (Canada); Laboratory for Advanced Spectroscopy and Imaging Research (LASIR), University of British Columbia, Vancouver (Canada); Shapiro, E. A. [Department of Chemistry, University of British Columbia, Vancouver (Canada); Hepburn, J. W.; Shapiro, M.; Milner, V. [Departments of Physics and Astronomy, University of British Columbia, Vancouver (Canada); Department of Chemistry, University of British Columbia, Vancouver (Canada); Laboratory for Advanced Spectroscopy and Imaging Research (LASIR), University of British Columbia, Vancouver (Canada)

2009-12-15T23:59:59.000Z

308

Sensitivity Enhancement in Solid-State Separated Local Field NMR Experiments by the Use of Adiabatic Cross-Polarization  

Science Journals Connector (OSTI)

Measurement of dipolar couplings using separated local field (SLF) NMR experiment is a powerful tool for structural and dynamics studies of oriented molecules such as liquid crystals and membrane proteins in aligned lipid bilayers. ... Enhancing the sensitivity of such SLF techniques is of significant importance in present-day solid-state NMR methodology. ... The present study considers the use of adiabatic cross-polarization for this purpose, which is applied for the first time to one of the well-known SLF techniques, namely, polarization inversion spin exchange at the magic angle (PISEMA). ...

Nitin P. Lobo; Krishna V. Ramanathan

2011-04-28T23:59:59.000Z

309

UC Santa Barbara ERGONOMICS MATCHING FUNDS APPLICATION FORM  

E-Print Network (OSTI)

UC Santa Barbara ERGONOMICS MATCHING FUNDS APPLICATION FORM INSTRUCTIONS: 1. Complete and copy of invoices or receipt to: Julie McAbee, Ergonomics Coordinator, Mail Code: 5132. REIMBURSEMENT); and d) Pre-approved furniture and accessories as recommended by Ergonomics Coordinator. 2. Limits

California at Santa Barbara, University of

310

Search-based metamodel matching with structural and syntactic measures  

Science Journals Connector (OSTI)

Abstract The use of different domain-specific modeling languages and diverse versions of the same modeling language often entails the need to translate models between the different languages and language versions. The first step in establishing a transformation between two languages is to find their corresponding concepts, i.e., finding correspondences between their metamodel elements. Although, metamodels use heterogeneous terminologies and structures, they often still describe similar language concepts. In this paper, we propose to combine structural metrics (e.g., number of properties per concept) and syntactic metrics to generate correspondences between metamodels. Because metamodel matching requires to cope with a huge search space of possible element combinations, we adapted a local and a global metaheuristic search algorithm to find the best set of correspondences between metamodels. The efficiency and effectiveness of our proposal is evaluated on different matching scenarios based on existing benchmarks. In addition, we compared our technique to state-of-the-art ontology matching and model matching approaches.

Marouane Kessentini; Ali Ouni; Philip Langer; Manuel Wimmer; Slim Bechikh

2014-01-01T23:59:59.000Z

311

Phase matching using Bragg reflection waveguides for monolithic nonlinear optics  

E-Print Network (OSTI)

-2945 (1998). 4. A. S. Helmy, D. C. Hutchings, T. C. Kleckner, J. H. Marsh, A. C. Bryce, J. M. Arnold, C. R, 1370-1373 (2000). 5. R. Haidar, N. Forget, E. Rosencher, "Optical parametric oscillation in micro. Helmy, Brian R. West "Phase Matching using Bragg Reflector Waveguides," IEEE LEOS Annual Meeting, Sydney

312

A Hierarchical History Matching Method and its Applications  

E-Print Network (OSTI)

......................................................................... 3 1.3 Software Prototype ................................................................................................... 5 CHAPTER II GLOBAL-LOCAL MODEL CALIBRATIONS ................................. 7 2.1 Introduction... .............................................................................................................. 7 2.2 Approach Outline ................................................................................................... 10 2.2.1 Outline of Hierarchical History Matching Method ......................................... 10 2.2.2 Illustration...

Yin, Jichao

2012-02-14T23:59:59.000Z

313

Fuel Cells Meeting: Matching Federal Government Needs with Energy  

E-Print Network (OSTI)

Fuel Cells Meeting: Matching Federal Government Needs with Energy Efficient Fuel Cells Hosted MORNING 9:00 - 9:10 a.m. Welcoming Remarks Schuyler Schell, Federal Energy Management Program Jo Council 9:10 - 10:40 a.m. Buildings and Facility Power Keith Spitznagel, LOGANEnergy Portable and Back

314

Feasibility Study of silkworm pupa sex identification with pattern matching  

Science Journals Connector (OSTI)

Silkworm sex identification is one of the important processes in the sericulture industry because it can assist in effectively separating strong and healthy silkworm pupae from the weak ones. In this paper, we study and show that a desired moderate accuracy ... Keywords: Agri-photonics, Normalized cross correlation, Optical sensors, Pattern matching, Sericulture, Silkworm pupae

Chakkrit Kamtongdee; Sarun Sumriddetchkajorn; Chiranut Sa-Ngiamsak

2013-07-01T23:59:59.000Z

315

Better Non-Local Games from Hidden Matching Harry Buhrman  

E-Print Network (OSTI)

Better Non-Local Games from Hidden Matching Harry Buhrman Giannicola Scarpa Ronald de Wolf July 15 variable R, sometimes called the "hidden variable". Its distribution is independent of the inputs and its value r is seen by both Alice and Bob, who can use this to coordinate their behaviour. A classical

de Wolf, Ronald

316

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.

317

Protein structure topological comparison, discovery and matching service  

Science Journals Connector (OSTI)

......Torrance 1 D. R. Gilbert 1 * I. Michalopoulos...of Biochemistry and Microbiology, University of Leeds...the EBI for a while (Gilbert et al., 1999; 2001...149-158 Viksna, J. and Gilbert, D. 2001Pattern matching...of Biochemistry and Microbiology, University of Leeds......

G. M. Torrance; D. R. Gilbert; I. Michalopoulos; D. W. Westhead

2005-05-01T23:59:59.000Z

318

Super-compound Engines Enable Multifuel Vehicles to Match Efficiency  

E-Print Network (OSTI)

Super-compound Engines Enable Multifuel Vehicles to Match Efficiency of Diesel-powered Vehicles is a 30 percent increase in lightload efficiency for a 2.0 liter (L) General Motors Ecotec engine in the last 25 years. Lightduty truck engines historically have poor efficiency, converting only 20 percent

319

Maximizing Efficiency of Solar-Powered Systems by Load Matching  

E-Print Network (OSTI)

energy. However, solar powered sys- tems must also consider the output level of the solar panel for power be counterproductive. Another problem that is of particular importance to solar pan- els is load matching. Solar panels is around 0.7­1.2, solar panels have a much larger Ri value as a function of the solar output and current

Shinozuka, Masanobu

320

An Audio Watermarking Method Based On Molecular Matching Pursuit  

E-Print Network (OSTI)

An Audio Watermarking Method Based On Molecular Matching Pursuit Mathieu Parvaix1 , Sridhar (Sri of the signal introduced by the MMP to get a precise representation of audio signals, and then by using TF representation techniques as viable watermarking schemes. Index Terms -- audio coding, time

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "adiabatic matching device" 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

Temperature differential detection device  

DOE Patents (OSTI)

A temperature differential detection device for detecting the temperature differential between predetermined portions of a container wall is disclosed as comprising a Wheatstone bridge circuit for detecting resistance imbalance with a first circuit branch having a first elongated wire element mounted in thermal contact with a predetermined portion of the container wall, a second circuit branch having a second elongated wire element mounted in thermal contact with a second predetermined portion of a container wall with the wire elements having a predetermined temperature-resistant coefficient, an indicator interconnected between the first and second branches remote from the container wall for detecting and indicating resistance imbalance between the first and second wire elements, and connector leads for electrically connecting the wire elements to the remote indicator in order to maintain the respective resistance value relationship between the first and second wire elements. The indicator is calibrated to indicate the detected resistance imbalance in terms of a temperature differential between the first and second wall portions.

Girling, Peter M. (Allentown, PA)

1986-01-01T23:59:59.000Z

322

Mobile Device Policy & Program Considerations  

E-Print Network (OSTI)

Page 1 Mobile Device Policy & Program Considerations To BYOD or not to BYOD (bring to manage the use of mobile devices within their corporate resources. Every business will naturally have different mobility requirements, and developing a policy in the first place, let alone an appropriate policy

Fisher, Kathleen

323

NETL: Pressure Swing Absorption Device  

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

Pressure Swing Absorption Device and Process for Separating CO2 from Shifted Syngas and its Capture for Subsequent Storage Pressure Swing Absorption Device and Process for Separating CO2 from Shifted Syngas and its Capture for Subsequent Storage Project No.: DE-FE0001323 New Jersey Institute of Technology is developing an advanced pressure swing absorption-based (PSAB) device via laboratory-based experiments. The device will be used to accomplish a cyclic process to process low temperature post-shift-reactor synthesis gas resulting from the gasification process into purified hydrogen at high pressure for use by the combustion turbine of an integrated gasification combined cycle (IGCC) plant. The overall goal of the proposed work is to develop an advanced PSAB device and cyclic process for use in a coal-fired IGCC plant to produce purified hydrogen at high pressure and a highly purified CO2 stream suitable for use or sequestration.

324

Notes on Conformal Invisibility Devices  

E-Print Network (OSTI)

As a consequence of the wave nature of light, invisibility devices based on isotropic media cannot be perfect. The principal distortions of invisibility are due to reflections and time delays. Reflections can be made exponentially small for devices that are large in comparison with the wavelength of light. Time delays are unavoidable and will result in wave-front dislocations. This paper considers invisibility devices based on optical conformal mapping. The paper shows that the time delays do not depend on the directions and impact parameters of incident light rays, although the refractive-index profile of any conformal invisibility device is necessarily asymmetric. The distortions of images are thus uniform, which reduces the risk of detection. The paper also shows how the ideas of invisibility devices are connected to the transmutation of force, the stereographic projection and Escheresque tilings of the plane.

Ulf Leonhardt

2006-05-25T23:59:59.000Z

325

Energy and Exergy Analysis of Water-LiBr Absorption Systems with Adiabatic Absorbers for Heating and Cooling  

Science Journals Connector (OSTI)

Abstract Solar energy can be used to produce cold through absorption systems. In this study, the energy and exergy analysis on a single effect water-LiBr absorption facility is presented. The work is carried out for heating and cooling applications. Performance parameters are the coefficient of performance and exergy efficiency. The influence of operating temperatures on such parameters is included. An analysis of individual components is also presented. The most noticeable effect is observed for the case of exergy efficiency for absorber and generator. This parameter increases with an increase of absorption temperature. The opposite effect is observed when the generation temperature increases. Results obtained allow the identification of parameters that may influence the exergy efficiency of the adiabatic absorption system. The first candidate to optimize is the absorber, due to the lowest value of exergy efficiency obtained among all components of the system. For adiabatic absorbers, the recirculation ratio emerges as a new parameter. The solution heat exchanger is also susceptible to optimization.

G. Gutiérrez-Urueta; A. Huicochea; P. Rodríguez-Aumente; W. Rivera

2014-01-01T23:59:59.000Z

326

Quasi-adiabatic Continuation for Disordered Systems: Applications to Correlations, Lieb-Schultz-Mattis, and Hall Conductance  

E-Print Network (OSTI)

We present a possible definition of a mobility gap for a many-body quantum system, in analogy to definitions of dynamical localization for single particle systems. Using this definition, we construct "corrected" quasi-adiabatic continuation operators. Under an appropriate definition of a unique ground state, we show how to introduce virtual fluxes. Armed with these results, we can directly carry over previous results in the case of a spectral gap. We present a proof of decay of correlation functions and we present a proof of Hall conductance quantization under very mild density-of-states assumptions defined later. We also generalize these definitions to the case of a "bulk mobility gap", in the case of a system with boundaries, and present a proof of Hall conductance quantization on an annulus under appropriate assumptions. Further, we present a new "optimized" quasi-adiabatic continuation operator which simplifies previous estimates and tightens bounds in certain cases. This is presented in an appendix which can be read independently of the rest of the paper as it also improves estimates in the case of systems with a spectral gap. This filter function used decays in time at least as fast as ${\\cal O}(\\exp(-t^\\alpha))$ for all $\\alpha<1$, a class of decay called subexponential (a tighter description of what is possible is below). Using this function it is possible to tighten recent estimates of the Hall conductance quantization for gapped systems\\cite{hall} to a decay which is subexponential in system size.

M. B. Hastings

2010-01-28T23:59:59.000Z

327

Empirical correlations for the modeling of R-134a flow through adiabatic capillary tubes  

SciTech Connect

This paper presents the results of an experimental study on capillary tubes commonly used as an expansion device in household refrigerators and freezers. The experiments were performed with the hydrofluorocarbon R-134a at different condensing pressures and levels of subcooling. The pressure and temperature profiles along the capillary tubes were measured in each test run. The data set was then used to evaluate the suitability of some equations previously reported in the literature for the single-phase friction factor, the underpressure of vaporization, and the entrance contraction loss factor. Correlations for the average and local two-phase friction factors were also developed based on the measured data.

Melo, C.; Neto, C.B.; Silva Ferreira, R.T. da

1999-07-01T23:59:59.000Z

328

Similarity Matching Techniques for Fault Diagnosis in Automotive Infotainment Electronics  

E-Print Network (OSTI)

Fault diagnosis has become a very important area of research during the last decade due to the advancement of mechanical and electrical systems in industries. The automobile is a crucial field where fault diagnosis is given a special attention. Due to the increasing complexity and newly added features in vehicles, a comprehensive study has to be performed in order to achieve an appropriate diagnosis model. A diagnosis system is capable of identifying the faults of a system by investigating the observable effects (or symptoms). The system categorizes the fault into a diagnosis class and identifies a probable cause based on the supplied fault symptoms. Fault categorization and identification are done using similarity matching techniques. The development of diagnosis classes is done by making use of previous experience, knowledge or information within an application area. The necessary information used may come from several sources of knowledge, such as from system analysis. In this paper similarity matching tec...

Kabir, Mashud

2009-01-01T23:59:59.000Z

329

MATCHED FILTER COMPUTATION ON FPGA, CELL, AND GPU  

SciTech Connect

The matched filter is an important kernel in the processing of hyperspectral data. The filter enables researchers to sift useful data from instruments that span large frequency bands. In this work, they evaluate the performance of a matched filter algorithm implementation on accelerated co-processor (XD1000), the IBM Cell microprocessor, and the NVIDIA GeForce 6900 GTX GPU graphics card. They provide extensive discussion of the challenges and opportunities afforded by each platform. In particular, they explore the problems of partitioning the filter most efficiently between the host CPU and the co-processor. Using their results, they derive several performance metrics that provide the optimal solution for a variety of application situations.

BAKER, ZACHARY K. [Los Alamos National Laboratory; GOKHALE, MAYA B. [Los Alamos National Laboratory; TRIPP, JUSTIN L. [Los Alamos National Laboratory

2007-01-08T23:59:59.000Z

330

Implementing wide baseline matching algorithms on a graphics processing unit.  

SciTech Connect

Wide baseline matching is the state of the art for object recognition and image registration problems in computer vision. Though effective, the computational expense of these algorithms limits their application to many real-world problems. The performance of wide baseline matching algorithms may be improved by using a graphical processing unit as a fast multithreaded co-processor. In this paper, we present an implementation of the difference of Gaussian feature extractor, based on the CUDA system of GPU programming developed by NVIDIA, and implemented on their hardware. For a 2000x2000 pixel image, the GPU-based method executes nearly thirteen times faster than a comparable CPU-based method, with no significant loss of accuracy.

Rothganger, Fredrick H.; Larson, Kurt W.; Gonzales, Antonio Ignacio; Myers, Daniel S.

2007-10-01T23:59:59.000Z

331

Split ring containment attachment device  

DOE Patents (OSTI)

A containment attachment device 10 for operatively connecting a glovebag 200 to plastic sheeting 100 covering hazardous material. The device 10 includes an inner split ring member 20 connected on one end 22 to a middle ring member 30 wherein the free end 21 of the split ring member 20 is inserted through a slit 101 in the plastic sheeting 100 to captively engage a generally circular portion of the plastic sheeting 100. A collar potion 41 having an outer ring portion 42 is provided with fastening means 51 for securing the device 10 together wherein the glovebag 200 is operatively connected to the collar portion 41.

Sammel, Alfred G. (Pittsburgh, PA)

1996-01-01T23:59:59.000Z

332

Hydrogen & Fuel Cell Activity USFCC -Matching Federal Government Needs  

E-Print Network (OSTI)

Hydrogen & Fuel Cell Activity USFCC - Matching Federal Government Needs Presented by: Mr. John Christensen, PE Chief Logistics R&D Division, DLA 26 April 2007 The DLA Enterprise $21.5B $25B $28B $31.8B $35 · Aviation: $3.4B · Troop Support: $12.7B · Energy: $12.5B · Distribution: $1.5B · Other: $1.1B 1 #12;2 DOD

333

Semiconductor device PN junction fabrication using optical processing of amorphous semiconductor material  

DOE Patents (OSTI)

Systems and methods for semiconductor device PN junction fabrication are provided. In one embodiment, a method for fabricating an electrical device having a P-N junction comprises: depositing a layer of amorphous semiconductor material onto a crystalline semiconductor base, wherein the crystalline semiconductor base comprises a crystalline phase of a same semiconductor as the amorphous layer; and growing the layer of amorphous semiconductor material into a layer of crystalline semiconductor material that is epitaxially matched to the lattice structure of the crystalline semiconductor base by applying an optical energy that penetrates at least the amorphous semiconductor material.

Sopori, Bhushan; Rangappan, Anikara

2014-11-25T23:59:59.000Z

334

Novel GaAs Devices  

Science Journals Connector (OSTI)

As the dimensions of GaAs devices shrink, the effective electron velocity should increase, leading to a shorter transit time and to a ballistic or near-ballistic mode of operation (see Chapter 2). At the same ...

Michael Shur

1987-01-01T23:59:59.000Z

335

Optical and optoelectronic fiber devices  

E-Print Network (OSTI)

The ability to integrate materials with disparate electrical, thermal, and optical properties into a single fiber structure enabled the realization of fiber devices with diverse and complex functionalities. Amongst those, ...

Shapira, Ofer, Ph. D. Massachusetts Institute of Technology

2007-01-01T23:59:59.000Z

336

Biomedical devices from ultraviolet LEDs  

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

Biomedical devices from ultraviolet LEDs Biomedical devices from ultraviolet LEDs Light-emitting nanocrystal diodes go ultraviolet Biomedical devices with active components could be made from nanostructured systems. February 24, 2012 Researcher working with nanocrystals A researcher at LANL works with nanocrystals. Get Expertise Researcher Sergio Brovelli Physical Chem & Applied Spectroscopy Email Research Team Leader Alberto Paleari University of Milano-Bicocca in Italy Such devices could, for example, selectively activate light-sensitive drugs for better medical treatment or probe for the presence of fluorescent markers in medical diagnostics. LEDs produce light in the ultraviolet range A process for creating glass-based, inorganic light-emitting diodes (LEDs) that produce light in the ultraviolet range has been developed by a

337

Towards Decentralized, Energy- and Privacy-Aware Device-to-Device Content Delivery  

Science Journals Connector (OSTI)

Device-to-Device (D2D) content delivery is a new approach to directly exchange content between mobile devices, which allows to offload ... operator to discover nearby devices and initiate a content transfer, in d...

Leonhard Nobach…

2014-01-01T23:59:59.000Z

338

Wireless device monitoring methods, wireless device monitoring systems, and articles of manufacture  

DOE Patents (OSTI)

Wireless device monitoring methods, wireless device monitoring systems, and articles of manufacture are described. According to one embodiment, a wireless device monitoring method includes accessing device configuration information of a wireless device present at a secure area, wherein the device configuration information comprises information regarding a configuration of the wireless device, accessing stored information corresponding to the wireless device, wherein the stored information comprises information regarding the configuration of the wireless device, comparing the device configuration information with the stored information, and indicating the wireless device as one of authorized and unauthorized for presence at the secure area using the comparing.

McCown, Steven H. (Rigby, ID); Derr, Kurt W. (Idaho Falls, ID); Rohde, Kenneth W. (Idaho Falls, ID)

2012-05-08T23:59:59.000Z

339

"Develop enabling optoelectronic devices for broadband  

E-Print Network (OSTI)

"Develop enabling optoelectronic devices for broadband communications and photonic systems Group Our group focuses on optoelectronic devices and photonic integrated circuits to photodiodes with the highest linearity and output power to date. High-Speed Optoelectronic Devices Driven

Acton, Scott

340

MDCF Tutorial Device Interface and App Development  

E-Print Network (OSTI)

-generated Device Interface (ICE Device Model) Vision: IDE for Driver Development & Validation Vision: IntegratedMDCF Tutorial Device Interface and App Development Acknowledgements: Funding provided by US National Science Foundation awards 0734204, 0930647 Clinical documentation and hardware provided by CIMIT

Huth, Michael

Note: This page contains sample records for the topic "adiabatic matching device" 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

Cryogenic scanning force microscopy of quantum Hall samples: Adiabatic transport originating in anisotropic depletion at contact interfaces  

Science Journals Connector (OSTI)

Anisotropic magnetoresistances and intrinsic adiabatic transport features are generated on quantum Hall samples based on an (Al,Ga)As/GaAs heterostructure with alloyed Au/Ge/Ni contacts. We succeed to probe the microscopic origin of these transport features with a cryogenic scanning force microscope by measuring the local potential distribution within the two-dimensional electron system (2DES). These local measurements reveal the presence of an incompressible strip in front of contacts with insulating properties depending on the orientation of the contact/2DES interface line relatively to the crystal axes of the heterostructure. Such an observation gives another microscopic meaning to the term “nonideal contact” used in context with the Landauer-Büttiker formalism applied to the quantum Hall effect.

F. Dahlem; E. Ahlswede; J. Weis; K. v. Klitzing

2010-09-10T23:59:59.000Z

342

Stimulated Raman adiabatic passage from an atomic to a molecular Bose-Einstein condensate P. D. Drummond and K. V. Kheruntsyan  

E-Print Network (OSTI)

to maintain high conversion efficiencies with smaller Rabi frequencies and under experimentally less demanding of the condensates. The result is that the STIRAP process appears feasible at high laser pulse intensities, providedStimulated Raman adiabatic passage from an atomic to a molecular Bose-Einstein condensate P. D

Heinzen, Daniel J.

343

An Automated Raman Device for Gout Diagnosis  

Science Journals Connector (OSTI)

This study reports an automated Raman device to identify crystals in synovial aspirates from patients with gout symptoms. Combined with sample preparation, the device could diagnose...

Li, Bolan

344

Functionalized Graphene Nanoroads for Quantum Well Device. |...  

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

Nanoroads for Quantum Well Device. Functionalized Graphene Nanoroads for Quantum Well Device. Abstract: Using density functional theory, a series of calculations of structural and...

345

Energy Conversion Devices | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Name: Energy Conversion Devices Place: Rochester Hills, MI Website: http:www.energyconversiondev References: Energy Conversion Devices1...

346

Power Device Packaging | Department of Energy  

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

Power Device Packaging Power Device Packaging 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

347

Power Device Packaging | Department of Energy  

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

Power Device Packaging Power Device Packaging 2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington...

348

DISSERTATION DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS  

E-Print Network (OSTI)

DISSERTATION DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS Submitted by Russell M Reserved #12;ABSTRACT DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS Thin-film photovoltaics

Sites, James R.

349

Asymmetric perfectly matched layer for the absorption of waves  

SciTech Connect

The Perfectly Matched Layer (PML) has become a standard for comparison in the techniques that have been developed to close the system of Maxwell equations (more generally wave equations) when simulating an open system. The original Berenger PML formulation relies on a split version of Maxwell equations with numerical electric and magnetic conductivities. They present here an extension of this formulation which introduces counterparts of the electric and magnetic conductivities affecting the term which is spatially differentiated in the equations. they phase velocity along each direction is also multiplied by an additional coefficient. They show that, under certain constraints on the additional numerical coefficients, this ''medium'' does not generate any reflection at any angle and any frequency and is then a Perfectly Matched Layer. Technically it is a super-set of Berenger's PML to which it reduces for a specific set of parameters and like it, it is anisotropic. However, unlike the PML, it introduces some asymmetry in the absorption rate and is therefore labeled an APML for Asymmetric Perfectly Matched Layer. They present here the numerical considerations that have led them to introduce such a medium as well as its theory. Several finite-different numerical implementations are derived (in one, two and three dimensions) and the performance of the APML is contrasted with that of the PML in one and two dimensions. Using plane wave analysis, they show that the APML implementations lead to higher absorption rates than the considered PML implementations. Although they have considered in this paper the finite-different discretization of Maxwell-like equations only, the APML system of equations may be used with other discretization schemes, such as finite-elements, and may be applied to other equations, for applications beyond electromagnetics.

Vay, Jean-Luc

2002-02-10T23:59:59.000Z

350

Matching Services with Users in Opportunistic Network Environments  

Science Journals Connector (OSTI)

Opportunistic Networks are a specific type of wireless ad hoc network where there is an absence of a continuous end-to-end path. The proliferation of mobile devices with Wi-Fi capability creates opportunities to forward packets by utilizing nodes as ... Keywords: ad hoc network, opportunistic network, matchmaking, service oriented computing

Anthony Smith, Stuart Berry, Richard Hill

2014-07-01T23:59:59.000Z

351

Acoustic tomography of currents in the ocean by the linearized method of matched nonreciprocity  

Science Journals Connector (OSTI)

The matched nonreciprocity method recently developed for acoustic diagnostics of ocean currents is based on matching the nonreciprocity of a sound field propagating along the current and against it. In this paper...

V. V. Goncharov

2001-01-01T23:59:59.000Z

352

Matching O2 Delivery to O2 Demand in Muscle: II. Allometric Variation in Energy Demand  

Science Journals Connector (OSTI)

This paper and the preceding paper by Weibel and Kayar address the question of whether, or to what extent, the structures involved in O2 consumption and delivery are matched to each other. This match between stru...

C. Richard Taylor; Kim E. Longworth…

1988-01-01T23:59:59.000Z

353

Distilling quantum entanglement via mode-matched filtering  

SciTech Connect

We propose an avenue toward distillation of quantum entanglement that is implemented by directly passing the entangled qubits through a mode-matched filter. This approach can be applied to a common class of entanglement impurities appearing in photonic systems, where the impurities inherently occupy different spatiotemporal modes than the entangled qubits. As a specific application, we show that our method can be used to significantly purify the telecom-band entanglement generated via the Kerr nonlinearity in single-mode fibers where a substantial amount of Raman-scattering noise is concomitantly produced.

Huang Yuping; Kumar, Prem [Center for Photonic Communication and Computing, EECS Department, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3118 (United States)

2011-09-15T23:59:59.000Z

354

Radiation-tolerant imaging device  

DOE Patents (OSTI)

A barrier at a uniform depth for an entire wafer is used to produce imaging devices less susceptible to noise pulses produced by the passage of ionizing radiation. The barrier prevents charge created in the bulk silicon of a CCD detector or a semiconductor logic or memory device from entering the collection volume of each pixel in the imaging device. The charge barrier is a physical barrier, a potential barrier, or a combination of both. The physical barrier is formed by an SiO{sub 2} insulator. The potential barrier is formed by increasing the concentration of majority carriers (holes) to combine with the electron`s generated by the ionizing radiation. A manufacturer of CCD imaging devices can produce radiation-tolerant devices by merely changing the wafer type fed into his process stream from a standard wafer to one possessing a barrier beneath its surface, thus introducing a very small added cost to his production cost. An effective barrier type is an SiO{sub 2} layer. 7 figs.

Colella, N.J.; Kimbrough, J.R.

1996-11-19T23:59:59.000Z

355

Combined use of adiabatic calorimetry and heat conduction calorimetry for quantifying propellant cook-off hazards  

Science Journals Connector (OSTI)

Recent work performed at DERA (now QinetiQ) has shown how accelerating rate calorimetry (ARC) can be used to obtain time to maximum rate curves using larger samples of energetic materials. The use of larger samples reduces the influence of thermal inertia, permitting experimental data to be gathered at temperatures closer to those likely to be encountered during manufacture, transportation or storage of an explosive device. However, in many cases, extrapolation of the time to maximum rate curve will still be necessary. Because of its low detection limit compared to the ARC, heat conduction calorimetry can be used to obtain data points at, or below, the region where an explosive system might exceed its temperature of no return and undergo a thermal explosion. Paired ARC and heat conduction calorimetry experiments have been conducted on some energetic material samples to explore this possibility further. Examples of where both agreement and disagreement are found between the two techniques are reported and the significance of these discussed. Ways in which combining ARC and heat conduction calorimetry experiments can enhance, complement and validate the results obtained from each technique are examined.

P.F. Bunyan; T.T. Griffiths; V.J. Norris

2003-01-01T23:59:59.000Z

356

M. A. Abdelmoneum, M. U. Demirci, S.-S. Li, and C. T.-C. Nguyen, "Post-fabrication laser trimming of micromechanical filters," Technical Digest, IEEE Int. Electron Devices Mtg., San Francisco, California, Dec. 13-15, 2004, pp. 39-42.  

E-Print Network (OSTI)

of micromechanical filters," Technical Digest, IEEE Int. Electron Devices Mtg., San Francisco, California, Dec. 13 absolute and matching tolerances in planar processes, this trim procedure might eventually be instrumental

Nguyen, Clark T.-C.

357

Illumination and Affine-Invariant Point Matching using an Ordinal Approach Indian Institute Of Technology Madras  

E-Print Network (OSTI)

Illumination and Affine- Invariant Point Matching using an Ordinal Approach Raj Gupta Indian://www.cs.iitm.ernet.in/~rgupta/ Anurag Mittal Indian Institute Of Technology Madras I.I.T Post Office Chennai-600 036 amittal- invariant point matching using ordinal features. Ordinal measures for matching only consider the order

Mittal, Anurag

358

SA_MetaMatch: relevant document discovery through document metadata and indexing  

Science Journals Connector (OSTI)

SA_MetaMatch, a component of the Standards Advisor (SA), is designed to find relevant documents through matching indices of metadata and document content. The elements in the metadata schema are mainly adopted from the Dublin Core (DC). The implementation ... Keywords: Dublin Core, document matching, index, metadata

Hiu S. Yau; J. Scott Hawker

2004-04-01T23:59:59.000Z

359

Robust Spatio-temporal Matching of Electronic Slides to Presentation Videos  

E-Print Network (OSTI)

1 Robust Spatio-temporal Matching of Electronic Slides to Presentation Videos Quanfu Fan, Kobus- matically matching and time-aligning electronic slides to videos of corresponding presentations. Matching electronic slides to videos provides new methods for indexing, searching, and browsing videos in distance

Barnard, Kobus

360

Microelectroporation device for genomic screening  

DOE Patents (OSTI)

We have developed an microelectroporation device that combines microarrays of oligonucleotides, microfluidic channels, and electroporation for cell transfection and high-throughput screening applications (e.g. RNA interference screens). Microarrays allow the deposition of thousands of different oligonucleotides in microscopic spots. Microfluidic channels and microwells enable efficient loading of cells into the device and prevent cross-contamination between different oligonucleotides spots. Electroporation allows optimal transfection of nucleic acids into cells (especially hard-to-transfect cells such as primary cells) by minimizing cell death while maximizing transfection efficiency. This invention has the advantage of a higher throughput and lower cost, while preventing cross-contamination compared to conventional screening technologies. Moreover, this device does not require bulky robotic liquid handling equipment and is inherently safer given that it is a closed system.

Perroud, Thomas D.; Renzi, Ronald F.; Negrete, Oscar; Claudnic, Mark R.

2014-09-09T23:59:59.000Z

Note: This page contains sample records for the topic "adiabatic matching device" 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

The Price of Matching Selfish Vertices or: How much love is lost because our governments do not arrange marriages?  

E-Print Network (OSTI)

The Price of Matching Selfish Vertices or: How much love is lost because our governments do of minimum-cost perfect matchings with selfish vertices through the price of anarchy (PoA) and price the cost of her own matching edge. Keywords: minimum-cost perfect matching, stable matching, price

362

Map Matching and Real World Integrated Sensor Data Warehousing (Presentation)  

SciTech Connect

The inclusion of interlinked temporal and spatial elements within integrated sensor data enables a tremendous degree of flexibility when analyzing multi-component datasets. The presentation illustrates how to warehouse, process, and analyze high-resolution integrated sensor datasets to support complex system analysis at the entity and system levels. The example cases presented utilizes in-vehicle sensor system data to assess vehicle performance, while integrating a map matching algorithm to link vehicle data to roads to demonstrate the enhanced analysis possible via interlinking data elements. Furthermore, in addition to the flexibility provided, the examples presented illustrate concepts of maintaining proprietary operational information (Fleet DNA) and privacy of study participants (Transportation Secure Data Center) while producing widely distributed data products. Should real-time operational data be logged at high resolution across multiple infrastructure types, map matched to their associated infrastructure, and distributed employing a similar approach; dependencies between urban environment infrastructures components could be better understood. This understanding is especially crucial for the cities of the future where transportation will rely more on grid infrastructure to support its energy demands.

Burton, E.

2014-02-01T23:59:59.000Z

363

Application of an impedance matching transformer to a plasma focus  

Science Journals Connector (OSTI)

A plasma focus was constructed using an impedance matching transformer to improve power transfer between the pulse power and the dynamic plasma load. The system relied on two switches and twelve transformer cores to produce a 100 kA pulse in short circuit on the secondary at 27 kV on the primary with 110 J stored. With the two transformer systems in parallel the Thevenin equivalent circuit parameters on the secondary side of the driver are: C = 10.9 ?F V0 = 4.5 kV L = 17 nH and R = 5 m?. An equivalent direct drive circuit would require a large number of switches in parallel to achieve the same Thevenin equivalent. The benefits of this approach are replacement of consumable switches with non-consumable transformer cores reduction of the driver inductance and resistance as viewed by the dynamic load and reduction of the stored energy to produce a given peak current. The system is designed to operate at 100 Hz so minimizing the stored energy results in less load on the thermal management system. When operated at 1 Hz the neutron yield from the transformer matched plasma focus was similar to the neutron yield from a conventional (directly driven) plasma focus at the same peak current.

B. L. Bures; C. James; M. Krishnan; R. Adler

2011-01-01T23:59:59.000Z

364

Beta ray flux measuring device  

DOE Patents (OSTI)

A beta ray flux measuring device in an activated member in-core instrumentation system for pressurized water reactors. The device includes collector rings positioned about an axis in the reactor's pressure boundary. Activated members such as hydroballs are positioned within respective ones of the collector rings. A response characteristic such as the current from or charge on a collector ring indicates the beta ray flux from the corresponding hydroball and is therefore a measure of the relative nuclear power level in the region of the reactor core corresponding to the specific exposed hydroball within the collector ring.

Impink, Jr., Albert J. (Murrysville, PA); Goldstein, Norman P. (Murrysville, PA)

1990-01-01T23:59:59.000Z

365

Metamaterials for terahertz polarimetric devices  

SciTech Connect

We present experimental and numerical investigations of planar terahertz metamaterial structures designed to interact with the state of polarization. The dependence of metamaterial resonances on polarization results in unique amplitude and phase characteristics of the terahertz transmission, providing the basis for polarimetric terahertz devices. We highlight some potential applications for polarimetric devices and present simulations of a terahertz quarter-wave plate and a polarizing terahertz beam splitter. Although this work was performed at terahertz frequencies, it may find applications in other frequency ranges as well.

O'hara, John F [Los Alamos National Laboratory; Taylor, Antoinette J [Los Alamos National Laboratory; Smirnova, Evgenya [Los Alamos National Laboratory; Azad, Abul [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

366

Inertial impaction air sampling device  

DOE Patents (OSTI)

An inertial impactor is designed which is to be used in an air sampling device for collection of respirable size particles in ambient air. The device may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

Dewhurst, K.H.

1990-05-22T23:59:59.000Z

367

Biocompatible wireless power transferring and charging based on ultrasonic resonance devices  

Science Journals Connector (OSTI)

To increase application area of implantable devices for medical treatment including implantable cardiac defibrillator or deep brain stimulator the rechargeable battery module is highly requested. The previous Li-type battery has limited current sources so that the patient is forced to have surgery just for changing battery. Previous technologies such as magnetic resonance and induction coupling have limited applications because of its short transfer distance compared to device size and magnetic field intensity limitation for the safety of body exposure. As an alternative the biocompatible wireless power transferring and charging technology is proposed using ultrasonic resonance devices. For the high efficient power transferring optimal transfer frequency is calculated based on the acoustic radiation and damping effect. Then the optimal load resistance is selected for matching power condition in receiver. And transmitter is designed to match the optimal transfer frequency. The ultrasonic resonance transmitter and receiver are manufactured with the size of 20 mm diameter 6.0 mm height. The energy conversion efficiency from input electrical power of transmitter and output power of receiver is about 25.6% at 10 cm distance experimentally. The maximum transferring power is up to 15 mW. This result is quite high considered with the device size and the power transfer distance.

2013-01-01T23:59:59.000Z

368

Implantable biomedical devices on bioresorbable substrates  

DOE Patents (OSTI)

Provided herein are implantable biomedical devices, methods of administering implantable biomedical devices, methods of making implantable biomedical devices, and methods of using implantable biomedical devices to actuate a target tissue or sense a parameter associated with the target tissue in a biological environment. Each implantable biomedical device comprises a bioresorbable substrate, an electronic device having a plurality of inorganic semiconductor components supported by the bioresorbable substrate, and a barrier layer encapsulating at least a portion of the inorganic semiconductor components. Upon contact with a biological environment the bioresorbable substrate is at least partially resorbed, thereby establishing conformal contact between the implantable biomedical device and the target tissue in the biological environment.

Rogers, John A; Kim, Dae-Hyeong; Omenetto, Fiorenzo; Kaplan, David L; Litt, Brian; Viventi, Jonathan; Huang, Yonggang; Amsden, Jason

2014-03-04T23:59:59.000Z

369

Encapsulation methods for organic electrical devices  

DOE Patents (OSTI)

The disclosure provides methods and materials suitable for use as encapsulation barriers in electronic devices. In one embodiment, for example, there is provided an electroluminescent device or other electronic device encapsulated by alternating layers of a silicon-containing bonding material and a ceramic material. The encapsulation methods provide, for example, electronic devices with increased stability and shelf-life. The invention is useful, for example, in the field of microelectronic devices.

Blum, Yigal D.; Chu, William Siu-Keung; MacQueen, David Brent; Shi, Yijian

2013-06-18T23:59:59.000Z

370

Mechanical scriber for semiconductor devices  

DOE Patents (OSTI)

A mechanical scriber using a scribing tip, such as a diamond, provides controlled scriber forces with a spring-loaded compound lever arrangement. The scribing force and range of scribing depth are adjusted by a pair of adjustable micrometer heads. A semiconductor device, such as a multilayer solar cell, can be formed into scribed strips at each layer. 5 figs.

Lin, P.T.

1985-03-05T23:59:59.000Z

371

Chapter 13 - Covert Listening Devices  

Science Journals Connector (OSTI)

Publisher Summary This chapter discusses a variety of cover listening devices that might be available to the Zukin. Although a range of eavesdropping tools is available, one should gravitate toward passive methods of eavesdropping. Such methods can enable to avoid entering the locations that one wish to monitor. It discusses the use of radio frequency scanners for monitoring several methods of communication. One can use such devices to monitor Bluetooth, cellular, and data networks, and other radio sources as well. Although specialized equipment is required for listening to some forms of radio communication, others are accessible with low-cost devices off the shelf or equipment that we can cobble together ourselves. It discusses the use of key loggers, in both hardware and software forms. Such devices can be used to record everything from keystrokes to complete video of the user's desktop for later perusal. It also discusses some of the issues in using key loggers, such as placement, retrieving data, and taking steps to not be discovered. It concludes with clandestinely placed sensors, including video and audio bugs.

Thomas Wilhelm; Jason Andress

2011-01-01T23:59:59.000Z

372

High performance thermoelectric nanocomposite device  

DOE Patents (OSTI)

A thermoelectric device includes a nanocomposite material with nanowires of at least one thermoelectric material having a predetermined figure of merit, the nanowires being formed in a porous substrate having a low thermal conductivity and having an average pore diameter ranging from about 4 nm to about 300 nm.

Yang, Jihui (Lakeshore, CA); Snyder, Dexter D. (Birmingham, MI)

2011-10-25T23:59:59.000Z

373

Graphene Growth and Device Integration  

E-Print Network (OSTI)

screens, photonic applications, energy generation, and batteries [3], [12], [13]. The first graphene filmsINVITED P A P E R Graphene Growth and Device Integration This paper describes one of the emerging methods for growing grapheneVthe chemical vapor deposition methodVwhich is based on a catalytic reaction

374

Evaluation of Miscellaneous and Electronic Device Energy Use in Hospitals  

E-Print Network (OSTI)

of Devices Device Category Infusion Pump Sphygmomanometer,Fixed Sphygmomanometer, Portable Pulse Oximeters, Portable

Black, Douglas R.

2014-01-01T23:59:59.000Z

375

Hardware device binding and mutual authentication  

DOE Patents (OSTI)

Detection and deterrence of device tampering and subversion by substitution may be achieved by including a cryptographic unit within a computing device for binding multiple hardware devices and mutually authenticating the devices. The cryptographic unit includes a physically unclonable function ("PUF") circuit disposed in or on the hardware device, which generates a binding PUF value. The cryptographic unit uses the binding PUF value during an enrollment phase and subsequent authentication phases. During a subsequent authentication phase, the cryptographic unit uses the binding PUF values of the multiple hardware devices to generate a challenge to send to the other device, and to verify a challenge received from the other device to mutually authenticate the hardware devices.

Hamlet, Jason R; Pierson, Lyndon G

2014-03-04T23:59:59.000Z

376

Comparative evaluation of three alternative power cycles for waste heat recovery from the exhaust of adiabatic diesel engines  

SciTech Connect

Three alternative power cycles were compared in application as an exhaust-gas heat-recovery system for use with advanced ''adiabatic'' diesel engines. The power cycle alternatives considered were steam Rankine, organic Rankine with RC-1 as the working fluid, and variations of an air Brayton cycle. The comparison was made in terms of fuel economy and economic payback potential for heavy-duty trucks operating in line-haul service. The results indicate that, in terms of engine rated specific fuel consumption, a diesel/alternative-power-cycle engine offers a significant improvement over the turbocompound diesel used as the baseline for comparison. The maximum improvement resulted from the use of a Rankine cycle heat-recovery system in series with turbocompounding. The air Brayton cycle alternatives studied, which included both simple-cycle and compression-intercooled configurations, were less effective and provided about half the fuel consumption improvement of the Rankine cycle alternatives under the same conditions. Capital and maintenance cost estimates were also developed for each of the heat-recovery power cycle systems. These costs were integrated with the fuel savings to identify the time required for net annual savings to pay back the initial capital investment. The sensitivity of capital payback time to arbitrary increases in fuel price, not accompanied by corresponding hardware cost inflation, was also examined. The results indicate that a fuel price increase is required for the alternative power cycles to pay back capital within an acceptable time period.

Bailey, M.M.

1985-07-01T23:59:59.000Z

377

Implementation of controlled phase shift gates and Collins version of Deutsch-Jozsa algorithm on a quadrupolar spin-7/2 nucleus using non-adiabatic geometric phases  

E-Print Network (OSTI)

In this work Controlled phase shift gates are implemented on a qaudrupolar system, by using non-adiabatic geometric phases. A general procedure is given, for implementing controlled phase shift gates in an 'N' level system. The utility of such controlled phase shift gates, is demonstrated here by implementing 3-qubit Deutsch-Jozsa algorithm on a 7/2 quadrupolar nucleus oriented in a liquid crystal matrix.

T. Gopinath; Anil Kumar

2009-09-22T23:59:59.000Z

378

Ion plated electronic tube device  

DOE Patents (OSTI)

An electronic tube and associated circuitry which is produced by ion plating techniques. The process is carried out in an automated process whereby both active and passive devices are produced at very low cost. The circuitry is extremely reliable and is capable of functioning in both high radiation and high temperature environments. The size of the electronic tubes produced are more than an order of magnitude smaller than conventional electronic tubes.

Meek, T.T.

1983-10-18T23:59:59.000Z

379

Infrared emitting device and method  

DOE Patents (OSTI)

An infrared emitting device and method. The infrared emitting device comprises a III-V compound semiconductor substrate upon which are grown a quantum-well active region having a plurality of quantum-well layers formed of a ternary alloy comprising InAsSb sandwiched between barrier layers formed of a ternary alloy having a smaller lattice constant and a larger energy bandgap than the quantum-well layers. The quantum-well layers are preferably compressively strained to increase the threshold energy for Auger recombination; and a method is provided for determining the preferred thickness for the quantum-well layers. Embodiments of the present invention are described having at least one cladding layer to increase the optical and carrier confinement in the active region, and to provide for waveguiding of the light generated within the active region. Examples have been set forth showing embodiments of the present invention as surface- and edge-emitting light emitting diodes (LEDs), an optically-pumped semiconductor laser, and an electrically-injected semiconductor diode laser. The light emission from each of the infrared emitting devices of the present invention is in the midwave infrared region of the spectrum from about 2 to 6 microns.

Kurtz, Steven R. (Albuquerque, NM); Biefeld, Robert M. (Albuquerque, NM); Dawson, L. Ralph (Albuquerque, NM); Howard, Arnold J. (Albuquerque, NM); Baucom, Kevin C. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

380

Release strategies for making transferable semiconductor structures, devices and device components  

DOE Patents (OSTI)

Provided are methods for making a device or device component by providing a multilayer structure having a plurality of functional layers and a plurality of release layers and releasing the functional layers from the multilayer structure by separating one or more of the release layers to generate a plurality of transferable structures. The transferable structures are printed onto a device substrate or device component supported by a device substrate. The methods and systems provide means for making high-quality and low-cost photovoltaic devices, transferable semiconductor structures, (opto-)electronic devices and device components.

Rogers, John A; Nuzzo, Ralph G; Meitl, Matthew; Ko, Heung Cho; Yoon, Jongseung; Menard, Etienne; Baca, Alfred J

2014-11-25T23:59:59.000Z

Note: This page contains sample records for the topic "adiabatic matching device" 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

Definition: Energy Management Device | Open Energy Information  

Open Energy Info (EERE)

Device Device Jump to: navigation, search Dictionary.png Energy Management Device A device in the customer's premise, including hardware and software, designed to control the operation of other energy devices according to customer preferences and objectives such as reducing energy costs, or maintaining comfort or convenience. Controlled devices could include, but are not limited to, thermostats, lighting, and smart appliances. Among other control inputs, an energy management device can accept energy pricing signals from a utility or third party energy services provider.[1] Related Terms energy, smart appliance References ↑ https://www.smartgrid.gov/category/technology/energy_management_device [[Ca LikeLike UnlikeLike You like this.Sign Up to see what your friends like.

382

U-005: Apache mod_proxy Pattern Matching Bug Lets Remote Users Access  

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

5: Apache mod_proxy Pattern Matching Bug Lets Remote Users 5: Apache mod_proxy Pattern Matching Bug Lets Remote Users Access Internal Servers U-005: Apache mod_proxy Pattern Matching Bug Lets Remote Users Access Internal Servers October 6, 2011 - 9:30am Addthis PROBLEM: Apache mod_proxy Pattern Matching Bug Lets Remote Users Access Internal Servers. PLATFORM: Apache HTTP Server 1.3.x, 2.2.21 and prior versions ABSTRACT: A remote user can access internal servers. reference LINKS: The Apache HTTP Server Project SecurityTracker Alert ID: 1026144 CVE-2011-3368 IMPACT ASSESSMENT: High Discussion: A vulnerability was reported in Apache mod_proxy. A remote user can access internal servers. When this system is configured in reverse proxy mode and uses the RewriteRule or ProxyPassMatch directives with a pattern match, a remote user can send a specially crafted request to access internal

383

Acoustic enhancement for photo detecting devices  

DOE Patents (OSTI)

Provided are improvements to photo detecting devices and methods for enhancing the sensitivity of photo detecting devices. A photo detecting device generates an electronic signal in response to a received light pulse. An electro-mechanical acoustic resonator, electrically coupled to the photo detecting device, damps the electronic signal and increases the signal noise ratio (SNR) of the electronic signal. Increased photo detector standoff distances and sensitivities will result.

Thundat, Thomas G; Senesac, Lawrence R; Van Neste, Charles W

2013-02-19T23:59:59.000Z

384

First Thermonuclear Device Successfully Tested | National Nuclear...  

National Nuclear Security Administration (NNSA)

Thermonuclear Device Successfully Tested | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing...

385

Student Mobile Device Survey Table of Contents  

E-Print Network (OSTI)

CiCS. Student Mobile Device Survey 2011 Table of Contents Section Number Subject Page 1 With little information and supporting evidence on student ownership and usage of mobile devices at the University of Sheffield, making decisions on our services and support for mobile devices has been based

Martin, Stephen John

386

Portable control device for networked mobile robots  

DOE Patents (OSTI)

A handheld control device provides a way for controlling one or multiple mobile robotic vehicles by incorporating a handheld computer with a radio board. The device and software use a personal data organizer as the handheld computer with an additional microprocessor and communication device on a radio board for use in controlling one robot or multiple networked robots.

Feddema, John T. (Albuquerque, NM); Byrne, Raymond H. (Albuquerque, NM); Bryan, Jon R. (Edgewood, NM); Harrington, John J. (Albuquerque, NM); Gladwell, T. Scott (Albuquerque, NM)

2002-01-01T23:59:59.000Z

387

Protecting health information on mobile devices  

Science Journals Connector (OSTI)

Mobile applications running on devices such as smart phones and tablets will be increasingly used to provide convenient access to health information to health professionals and patients. Also, patients will use these devices to transmit health information ... Keywords: healthcare data protection, mobile devices, security

Musheer Ahmed; Mustaque Ahamad

2012-02-01T23:59:59.000Z

388

Technische Universiteit Eindhoven Opto-Electronic Devices  

E-Print Network (OSTI)

in micro­ and optoelectronic devices. TUHH Heinrich Voss Iterative projection methods New Orleans 2005 4 and their potential for applications in micro­ and optoelectronic devices. In such nanostructures, the free carriers of their special physical properties and their potential for applications in micro­ and optoelectronic devices

Lipari, Giuseppe

389

Wave energy devices with compressible volumes  

Science Journals Connector (OSTI)

...author and source are credited. Wave energy devices with compressible volumes Adi...1BJ, UK We present an analysis of wave energy devices with air-filled compressible...wave period range of about-4s. wave energy|compressible volume|axisymmetric device...

2014-01-01T23:59:59.000Z

390

Apparatus and methods for using achromatic phase matching at high orders of dispersion  

DOE Patents (OSTI)

Achromatic phase-matching (APM) is used for efficiently multiplying the frequency of broad bandwidth light by using a nonlinear optical medium comprising a second-harmonic generation (SHG) crystal. Stationary optical elements whose configuration, properties, and arrangement have been optimized to match the dispersion characteristics of the SHG crystal to at least the second order. These elements include a plurality of prismatic elements for directing an input light beam onto the SHG crystal such that each ray wavelength is aligned to match the phase-matching angle for the crystal at each wavelength of light to at least the second order and such that every ray wavelength overlap within the crystal.

Richman, Bruce (1134 Portola Meadows Rd., Apt. 124, Livermore, CA 64550); Trebino, Rick (340 Kelson Dr., Atlanta, GA 30327); Bisson, Scott (143 Diamond Dr., Livermore, CA 94550); Sidick, Erkin (3897 Aragon Ave., San Ramon, CA 94583)

2001-01-01T23:59:59.000Z

391

E-Print Network 3.0 - affine invariant matching Sample Search...  

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

Viewpoint simulation Conclusion Similarity and affine invariant point Summary: the patch around each IP? 4 Matching IP: limitations 5 A new way to attain affine invariance:...

392

E-Print Network 3.0 - anomalous dispersion phase-matching Sample...  

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

to travel at its luminal group velocity but phase-match to dispersive waves... dispersive radiation to be ... Source: Gaeta, Alexander L. - School of Applied and Engineering...

393

Device-scale perpendicular alignment of colloidal nanorods  

E-Print Network (OSTI)

direction (necessary for optoelectronics), but such arrayssolution-processed optoelectronics with performance matching

Baker, Jessica L.

2010-01-01T23:59:59.000Z

394

Protective laser beam viewing device  

DOE Patents (OSTI)

A protective laser beam viewing system or device including a camera selectively sensitive to laser light wavelengths and a viewing screen receiving images from the laser sensitive camera. According to a preferred embodiment of the invention, the camera is worn on the head of the user or incorporated into a goggle-type viewing display so that it is always aimed at the area of viewing interest to the user and the viewing screen is incorporated into a video display worn as goggles over the eyes of the user.

Neil, George R.; Jordan, Kevin Carl

2012-12-18T23:59:59.000Z

395

Inertial impaction air sampling device  

DOE Patents (OSTI)

An inertial impactor to be used in an air sampling device for collection of respirable size particles in ambient air which may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

Dewhurst, K.H.

1987-12-10T23:59:59.000Z

396

Inertial impaction air sampling device  

DOE Patents (OSTI)

An inertial impactor to be used in an air sampling device for collection of respirable size particles in ambient air which may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry.

Dewhurst, Katharine H. (13150 Wenonah SE. Apt. 727, Albuquerque, NM 87123)

1990-01-01T23:59:59.000Z

397

Health Sciences Library Resources for Mobile Device Users Wireless Access for Mobile Devices  

E-Print Network (OSTI)

1 Health Sciences Library Resources for Mobile Device Users Wireless Access for Mobile Devices to configure your mobile device; instructions are available at http://www.usask.ca/ict/services/network-services/wireless/index.php - Assistance with accessing University services (such as wireless) on mobile devices is available from the ICT

Peak, Derek

398

Mobile Communication Device Allowance Authorization Form Revised: April 2011 MOBILE COMMUNICATION DEVICE ALLOWANCE AUTHORIZATION FORM  

E-Print Network (OSTI)

Mobile Communication Device Allowance Authorization Form Revised: April 2011 MOBILE COMMUNICATION list your CURRENT PLAN features: Mobile service provider Name: ________ Monthly Charge: $ Device.edu/policy/itc/FINAL%20Policy%20on%20Mobile%20Comm%20Devices.htm I have read the Mobile Communication Devices Policy

Dyer, Bill

399

Electrical device fabrication from nanotube formations  

DOE Patents (OSTI)

A method for forming nanotube electrical devices, arrays of nanotube electrical devices, and device structures and arrays of device structures formed by the methods. Various methods of the present invention allow creation of semiconducting and/or conducting devices from readily grown SWNT carpets rather than requiring the preparation of a patterned growth channel and takes advantage of the self-controlling nature of these carpet heights to ensure a known and controlled channel length for reliable electronic properties as compared to the prior methods.

Nicholas, Nolan Walker; Kittrell, W. Carter; Kim, Myung Jong; Schmidt, Howard K.

2013-03-12T23:59:59.000Z

400

Organic light emitting devices for illumination  

SciTech Connect

An organic light emitting device an a method of obtaining illumination from such a device is provided. The device has a plurality of regions, each region having an organic emissive layer adapted to emit a different spectrum of light. The regions in combination emit light suitable for illumination purposes. The area of each region may be selected such that the device is more efficient than an otherwise equivalent device having regions of equal size. The regions may have an aspect ratio of at least about four. All parts of any given region may be driven at the same current.

Hack, Michael (Lambertville, NJ); Lu, Min-Hao Michael (Lawrenceville, NJ); Weaver, Michael S. (Princeton, NJ)

2012-01-24T23:59:59.000Z

Note: This page contains sample records for the topic "adiabatic matching device" 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

Using audio in secure device pairing  

Science Journals Connector (OSTI)

Secure pairing of electronic devices is an important issue that must be addressed in many contexts. In the absence of prior security context, the need to involve the user in the pairing process is a prominent challenge. In this paper, we investigate the use of the audio channel for human-assisted device pairing. First we assume a common (insecure) wireless channel between devices. We then obviate the assumption of a pre-existing common channel with a single-channel device pairing approach only based on audio. Both approaches are applicable to a wide range of devices and place light burden on the user.

Michael T. Goodrich; Michael Sirivianos; John Solis; Claudio Soriente; Gene Tsudik; Ersin Uzun

2009-01-01T23:59:59.000Z

402

Numerical Modeling of Non-adiabatic Heat-Recirculating Combustors C. H. Kuo and P. D. Ronney  

E-Print Network (OSTI)

of temperature-dependent gas and solid properties, viscous flow, surface-to-surface radiative heat transfer, heat affect the performance of heat-recirculating combustors, but the relative importance of such effects, however, heat and friction losses become more significant, thus fuel-to-electricity conversion devices

403

Catalytic Device International LLC | Open Energy Information  

Open Energy Info (EERE)

Catalytic Device International LLC Catalytic Device International LLC Jump to: navigation, search Name Catalytic Device International LLC Place Pleasanton, California Product California-based, firm focused on portable, heat-on-demand products. References Catalytic Device International LLC[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Catalytic Device International LLC is a company located in Pleasanton, California . References ↑ "Catalytic Device International LLC" Retrieved from "http://en.openei.org/w/index.php?title=Catalytic_Device_International_LLC&oldid=343285" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages

404

Infrared emitting device and method  

DOE Patents (OSTI)

The infrared emitting device comprises a III-V compound semiconductor substrate upon which are grown a quantum-well active region having a plurality of quantum-well layers formed of a ternary alloy comprising InAsSb sandwiched between barrier layers formed of a ternary alloy having a smaller lattice constant and a larger energy bandgap than the quantum-well layers. The quantum-well layers are preferably compressively strained to increase the threshold energy for Auger recombination; and a method is provided for determining the preferred thickness for the quantum-well layers. Embodiments of the present invention are described having at least one cladding layer to increase the optical and carrier confinement in the active region, and to provide for waveguiding of the light generated within the active region. Examples have been set forth showing embodiments of the present invention as surface- and edge-emitting light emitting diodes (LEDs), an optically-pumped semiconductor laser, and an electrically-injected semiconductor diode laser. The light emission from each of the infrared emitting devices of the present invention is in the midwave infrared region of the spectrum from about 2 to 6 microns. 8 figs.

Kurtz, S.R.; Biefeld, R.M.; Dawson, L.R.; Howard, A.J.; Baucom, K.C.

1997-04-29T23:59:59.000Z

405

Recent progress in InGaAsSb/GaSb TPV devices  

SciTech Connect

AstroPower is developing InGaAsSb thermophotovoltaic (TPV) devices. This photovoltaic cell is a two-layer epitaxial InGaAsSb structure formed by liquid-phase epitaxy on a GaSb substrate. The (direct) bandgap of the In{sub 1{minus}x}Ga{sub x}As{sub 1{minus}y}Sb{sub y} alloy is 0.50 to 0.55 eV, depending on its exact alloy composition (x,y); and is closely lattice-matched to the GaSb substrate. The use of the quaternary alloy, as opposed to a ternary alloy--such as, for example InGaAs/InP--permits low bandgap devices optimized for 1,000 to 1,500 C thermal sources with, at the same time, near-exact lattice matching to the GaSb substrate. Lattice matching is important since even a small degree of lattice mismatch degrades device performance and reliability and increases processing complexity. Internal quantum efficiencies as high as 95% have been measured at a wavelength of 2 microns. At 1 micron wavelengths, internal quantum efficiencies of 55% have been observed. The open-circuit voltage at currents of 0.3 A/cm{sup 2} is 0.220 volts and 0.280 V for current densities of 2 A/cm{sup 2}. Fill factors of 56% have been measured at 60 mA/cm{sup 2}. However, as current density increases there is some decrease in fill factor. The results to date show that the GaSb-based quaternary compounds provide a viable and high performance energy conversion solution for thermophotovoltaic systems operating with 1,000 to 1,500 C source temperatures.

Shellenbarger, Z.A.; Mauk, M.G.; DiNetta, L.C. [AstroPower, Inc., Newark, DE (United States); Charache, G.W. [Lockheed Martin Corp., Schenectady, NY (United States)

1996-05-01T23:59:59.000Z

406

Efficient broadband energy transfer via momentum matching at hybrid junctions of guided-waves  

E-Print Network (OSTI)

Efficient broadband energy transfer via momentum matching at hybrid junctions of guided://apl.aip.org/about/rights_and_permissions #12;Efficient broadband energy transfer via momentum matching at hybrid junctions of guided, The American University in Cairo, New Cairo 11835, Egypt (Received 2 August 2012; accepted 5 September 2012

407

Matching Robot Appearance and Behavior to Tasks to Improve Human-Robot Cooperation  

E-Print Network (OSTI)

Matching Robot Appearance and Behavior to Tasks to Improve Human-Robot Cooperation Jennifer Goetz Interaction Institute Carnegie Mellon University apowers@cmu.edu Abstract A robot's appearance and behavior provide cues to the robot's abilities and propensities. We hypothesize that an appropriate match between

Kiesler, Sara

408

Recovery of 3D Solar Magnetic Field Model Parameter Using Image Structure Matching  

Science Journals Connector (OSTI)

An approach to recover a 3D solar magnetic field model parameter using intensity images of the Sun's corona is introduced. The approach is a quantitative approach in which the 3D model parameter is determined via an image structure matching scheme. The ... Keywords: 3D Parameter Recovery, Image-based Modeling, Structure Matching

Jong Kwan Lee; G. Allen Gary

2009-05-01T23:59:59.000Z

409

Inverted Index Compression for Scalable Image Matching David M. Chen1  

E-Print Network (OSTI)

Inverted Index Compression for Scalable Image Matching David M. Chen1 , Sam S. Tsai1 , Vijay Abstract To perform fast image matching against large databases, a Vocabulary Tree (VT) uses an inverted index that maps from each tree node to database images which have visited that node. The inverted index

Girod, Bernd

410

Chlamydia trachomatis Load at Matched Anatomic Sites: Implications for Screening Strategies  

Science Journals Connector (OSTI)

...quantified chlamydial organism load in matched specimens from...between chlamydial organism load in matched samples and...consultation, and these data were obtained retrospectively...prevalence and organism load analyses. The numbers...leukocytes per high-power field (PMNLs/HPF...

Claude-Edouard C. Michel; Christopher Sonnex; Christopher A. Carne; John A. White; Jose Paolo V. Magbanua; Elpidio Cesar B. Nadala Jr.; Helen H. Lee

2007-03-21T23:59:59.000Z

411

An acoustical study of vocal pitch matching in congenital Sean Hutchinsa  

E-Print Network (OSTI)

An acoustical study of vocal pitch matching in congenital amusia Sean Hutchinsa International November 2009; accepted 10 November 2009 Vocal pitch matching is a foundational skill for singing and is an interesting place to study the relationship between pitch perception and production. To better understand

412

Hamilton Cycles which Extend Transposition Matchings in Cayley Graphs of S n  

E-Print Network (OSTI)

Hamilton Cycles which Extend Transposition Matchings in Cayley Graphs of S n Frank Ruskey \\Lambda matching M b in Cay(B : S n ). We show here when n ? 4 that for any b 2 B, there is a Hamilton cycle in Cay only a Hamilton path, the question is still open and is, in fact, a special case of the more general

Savage, Carla D.

413

DTW for Matching Radon Features: A Pattern Recognition and Retrieval Method  

E-Print Network (OSTI)

. This allows to exploit the Radon property to include both boundary as internal structure of shapes, whileDTW for Matching Radon Features: A Pattern Recognition and Retrieval Method Santosh K.C.1 , Bart. It is basically based on dynamic programming for matching the Radon features. The key char- acteristic

Boyer, Edmond

414

Electro-optic component mounting device  

DOE Patents (OSTI)

A technique is provided for integrally mounting a device such as an electro-optic device (50) in a transmission line to avoid series resonant effects. A center conductor (52) of the transmission line has an aperture (58) formed therein for receiving the device (50). The aperture (58) splits the center conductor into two parallel sections on opposite sides of the device. For a waveguide application, the center conductor is surrounded by a conductive ground surface (54), which is spaced apart from the center conductor with a dielectric material (56). One set of electrodes formed on the surface of the electro-optic device (50) is directly connected to the center conductor 52 and an electrode formed on the surface of the electro-optic device is directly connected to the conductive ground surface (54). The electrodes formed on the surface of the electro-optic device are formed on curved sections of the surface of the device to mate with correspondingly shaped electrodes on the conductor and ground surface to provide a uniform electric field across the electro-optic device. The center conductor includes a passage ( 60) formed therein for passage of optical signals to an electro-optic device.

Gruchalla, Michael E. (Albuquerque, NM)

1994-01-01T23:59:59.000Z

415

Electro-optic component mounting device  

DOE Patents (OSTI)

A technique is provided for integrally mounting a device such as an electro-optic device in a transmission line to avoid series resonant effects. A center conductor of the transmission line has an aperture formed therein for receiving the device. The aperture splits the center conductor into two parallel sections on opposite sides of the device. For a waveguide application, the center conductor is surrounded by a conductive ground surface which is spaced apart from the center conductor with a dielectric material. One set of electrodes formed on the surface of the electro-optic device is directly connected to the center conductor and an electrode formed on the surface of the electro-optic device is directly connected to the conductive ground surface. The electrodes formed on the surface of the electro-optic device are formed on curved sections of the surface of the device to mate with correspondingly shaped electrodes on the conductor and ground surface to provide a uniform electric field across the electro-optic device. The center conductor includes a passage formed therein for passage of optical signals to an electro-optic device. 10 figs.

Gruchalla, M.E.

1994-09-13T23:59:59.000Z

416

Graphene: from functionalization to devices  

Science Journals Connector (OSTI)

The year 2014 marks the first decade of the rise of graphene. Graphene, a single atomic layer of carbon atoms in sp2 bonding configuration having a honeycomb structure, has now become a well-known and well-established material. Among some of its many outstanding fundamental properties, one can mention a very high carrier mobility, a very large spin diffusion length, unsurpassed mechanical properties as graphene is the strongest material ever measured and an exceptional thermal conductivity scaling more than one order of magnitude above that of copper. After the first years of the graphene rush, graphene growth is now well controlled using various methods like epitaxial growth on silicon carbide substrate, chemical vapour deposition (CVD) or plasma techniques on metal, insulator or semiconductor substrates. More applied research is now taking over the initial studies on graphene production. Indeed, graphene is a promising material for many advanced applications such as, but not limited to, electronic, spintronics, sensors, photonics, micro/nano-electromechanical (MEMS/NEMS) systems, super-capacitors or touch-screen technologies. In this context, this Special Issue of the Journal of Physics D: Applied Physics on graphene reviews some of the recent achievements, progress and prospects in this field. It includes a collection of seventeen invited articles covering the current status and future prospects of some selected topics of strong current interest. This Special Issue is organized in four sections. The first section is dedicated to graphene devices, and opens with an article by de Heer et al on an investigation of integrating graphene devices with silicon complementary metal–oxide–semiconductor (CMOS) technology. Then, a study by Svintsov et al proposes a lateral all-graphene tunnel field-effect transistor (FET) with a high on/off current switching ratio. Next, Tsukagoshi et al present how a band-gap opening occurs in a graphene bilayer by using a perpendicular electric field to operate logic gates. Plaçais et al then show the realization of graphene microwave nano-transistors that are especially suitable for fast charge detectors. Matsumoto et al describe next some interesting graphene-based biosensor applications, while the following article by Otsuji et al shows recent advances in plasmonics in terahertz device applications. This section ends with the Dollfus et al article dealing with non-linear effects in graphene devices investigated by simulation methods. The second section concerns the electronic and transport properties and includes four articles. The first one by Gurzadyan et al provides an investigation of graphene oxide in water by femtosecond pump–probe spectroscopy to study its transient absorption properties. Jouault et al then review the quantum Hall effect of self-organized graphene monolayers epitaxially grown on the C-face of SiC. Next, Petkovic et al report on the observation of edge magneto-plasmons in graphene. Finally, Roche and Valenzuela focus on the limits of conventional views in graphene spin transport and offer novel perspectives for further progress. The third section addresses graphene tailoring and functionalization as studied by Genorio and Znidarsic for graphene nanoribbons, or by atomic intercalation as shown by the two articles from Starke and Forti, and from Bisson et al. The last section is devoted to graphene growth and morphology. Ogino et al first describe a method to grow graphene on insulating substrates using polymer films as a carbon source. Then, Suemitsu et al show the recent progresses in epitaxial graphene formation on cubic silicon carbide thin films. Finally, Norimatsu and Kusunoki investigate the structural properties and morphology of epitaxial graphene grown on hexagonal silicon carbide substrates by using a high-resolution transmission electron microscope, their article closing this Special Issue .

Antonio Tejeda; Patrick G Soukiassian

2014-01-01T23:59:59.000Z

417

Volatile organic compound sensing devices  

DOE Patents (OSTI)

Apparatus employing vapochromic materials in the form of inorganic double complex salts which change color reversibly when exposed to volatile organic compound (VOC) vapors is adapted for VOC vapor detection, VOC aqueous matrix detection, and selective VOC vapor detection. The basic VOC vapochromic sensor is incorporated in various devices such as a ground probe sensor, a wristband sensor, a periodic sampling monitor, a soil/water penetrometer, an evaporative purge sensor, and various vacuum-based sensors which are particularly adapted for reversible/reusable detection, remote detection, continuous monitoring, or rapid screening of environmental remediation and waste management sites. The vapochromic sensor is used in combination with various fiber optic arrangements to provide a calibrated qualitative and/or quantitative indication of the presence of VOCs.

Lancaster, Gregory D. (Idaho Falls, ID); Moore, Glenn A. (Idaho Falls, ID); Stone, Mark L. (Idaho Falls, ID); Reagen, William K. (Stillwater, MN)

1995-01-01T23:59:59.000Z

418

Volatile organic compound sensing devices  

DOE Patents (OSTI)

Apparatus employing vapochromic materials in the form of inorganic double complex salts which change color reversibly when exposed to volatile organic compound (VOC) vapors is adapted for VOC vapor detection, VOC aqueous matrix detection, and selective VOC vapor detection. The basic VOC vapochromic sensor is incorporated in various devices such as a ground probe sensor, a wristband sensor, a periodic sampling monitor, a soil/water penetrometer, an evaporative purge sensor, and various vacuum-based sensors which are particularly adapted for reversible/reusable detection, remote detection, continuous monitoring, or rapid screening of environmental remediation and waste management sites. The vapochromic sensor is used in combination with various fiber optic arrangements to provide a calibrated qualitative and/or quantitative indication of the presence of VOCs. 15 figs.

Lancaster, G.D.; Moore, G.A.; Stone, M.L.; Reagen, W.K.

1995-08-29T23:59:59.000Z

419

Haptic device for telerobotic surgery  

DOE Patents (OSTI)

A haptic device for telerobotic surgery, including a base; a linkage system having first and second linkage members coupled to the base; a motor that provides a motor force; a transmission including first and second driving pulleys arranged such that their faces form an angle and their axes form a plane, first and second idler pulleys offset from the plane and arranged between the first and second driving pulleys such that their axes divide the angle between the first and second driving pulleys, and a cable that traverses the first and second driving pulleys and the set of idler pulleys and transfers the motor force to the linkage system; an end effector coupled to distal ends of the first and second linkage members and maneuverable relative to the base; and a controller that modulates the motor force to simulate a body part at a point portion of the end effector.

Salisbury, Curt; Salisbury, Jr., J. Kenneth

2014-12-30T23:59:59.000Z

420

Heating device for semiconductor wafers  

DOE Patents (OSTI)

An apparatus for heat treating semiconductor wafers is disclosed. The apparatus includes a heating device which contains an assembly of light energy sources for emitting light energy onto a wafer. In particular, the light energy sources are positioned such that many different radial heating zones are created on a wafer being heated. For instance, in one embodiment, the light energy sources form a spiral configuration. In an alternative embodiment, the light energy sources appear to be randomly dispersed with respect to each other so that no discernable pattern is present. In a third alternative embodiment of the present invention, the light energy sources form concentric rings. Tuning light sources are then placed in between the concentric rings of light.

Vosen, Steven R. (Berkeley, CA)

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "adiabatic matching device" 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

Heating device for semiconductor wafers  

DOE Patents (OSTI)

An apparatus for heat treating semiconductor wafers is disclosed. The apparatus includes a heating device which contains an assembly of light energy sources for emitting light energy onto a wafer. In particular, the light energy sources are positioned such that many different radial heating zones are created on a wafer being heated. For instance, in one embodiment, the light energy sources form a spiral configuration. In an alternative embodiment, the light energy sources appear to be randomly dispersed with respect to each other so that no discernible pattern is present. In a third alternative embodiment of the present invention, the light energy sources form concentric rings. Tuning light sources are then placed in between the concentric rings of light. 4 figs.

Vosen, S.R.

1999-07-27T23:59:59.000Z

422

Seal device for ferromagnetic containers  

DOE Patents (OSTI)

A temporary seal or patch assembly prevents the escape of contents, e.g., fluids and the like, from within a container having a breach there through until the contents can be removed and/or a repair effected. A frame that supports a sealing bladder can be positioned over the breach and the frame is then attached to the container surface, which must be of a ferromagnet material, by using switchable permanent magnets. The permanent magnets are designed to have a first condition that is not attracted to the ferromagnetic surface and a second conditions whereby the magnets are attracted to the surface with sufficient force to support the seal assembly on the surface. Latching devices may be attached to the frame and engage the container surface with hardened pins to prevent the lateral movement of the seal assembly along the container surface from external forces such as fluid drag or gravity. 10 figs.

Meyer, R.E.; Jason, A.J.

1994-10-18T23:59:59.000Z

423

Seal device for ferromagnetic containers  

DOE Patents (OSTI)

A temporary seal or patch assembly prevents the escape of contents, e.g., fluids and the like, from within a container having a breach therethrough until the contents can be removed and/or a repair effected. A frame that supports a sealing bladder can be positioned over the breach and the frame is then attached to the container surface, which must be of a ferromagnet material, by using switchable permanent magnets. The permanent magnets are designed to have a first condition that is not attracted to the ferromagnetic surface and a second conditions whereby the magnets are attracted to the surface with sufficient force to support the seal assembly on the surface. Latching devices may be attached to the frame and engage the container surface with hardened pins to prevent the lateral movement of the seal assembly along the container surface from external forces such as fluid drag or gravity.

Meyer, Ross E. (Los Alamos, NM); Jason, Andrew J. (Los Alamos, NM)

1994-01-01T23:59:59.000Z

424

Cryogenic vacuumm RF feedthrough device  

DOE Patents (OSTI)

A cryogenic vacuum rf feedthrough device comprising: 1) a probe for insertion into a particle beam; 2) a coaxial cable comprising an inner conductor and an outer conductor, a dielectric/insulating layer surrounding the inner conductor, the latter being connected to the probe for the transmission of higher mode rf energy from the probe; and 3) a high thermal conductivity stub attached to the coaxial dielectric about and in thermal contact with the inner conductor which high thermal conductivity stub transmits heat generated in the vicinity of the probe efficiently and radially from the area of the probe and inner conductor all while maintaining useful rf transmission line characteristics between the inner and outer coaxial conductors.

Wu, Genfa (Yorktown, VA); Phillips, Harry Lawrence (Hayes, VA)

2008-12-30T23:59:59.000Z

425

Emission Zone Control in Blue Organic Electrophosphorescent Devices...  

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

Electrophosphorescent Devices Through Chemical Modification of Host Materials . Emission Zone Control in Blue Organic Electrophosphorescent Devices Through Chemical...

426

Microfabricated fuel heating value monitoring device  

DOE Patents (OSTI)

A microfabricated fuel heating value monitoring device comprises a microfabricated gas chromatography column in combination with a catalytic microcalorimeter. The microcalorimeter can comprise a reference thermal conductivity sensor to provide diagnostics and surety. Using microfabrication techniques, the device can be manufactured in production quantities at a low per-unit cost. The microfabricated fuel heating value monitoring device enables continuous calorimetric determination of the heating value of natural gas with a 1 minute analysis time and 1.5 minute cycle time using air as a carrier gas. This device has applications in remote natural gas mining stations, pipeline switching and metering stations, turbine generators, and other industrial user sites. For gas pipelines, the device can improve gas quality during transfer and blending, and provide accurate financial accounting. For industrial end users, the device can provide continuous feedback of physical gas properties to improve combustion efficiency during use.

Robinson, Alex L. (Albuquerque, NM); Manginell, Ronald P. (Albuquerque, NM); Moorman, Matthew W. (Albuquerque, NM)

2010-05-04T23:59:59.000Z

427

Infections of Cardiovascular Implantable Electronic Devices  

Science Journals Connector (OSTI)

...-culture results are negative in those with previously positive culture results and until infection at the pocket site has been controlled. In addition to removal of the device, antimicrobial therapy is needed. Owing to the predominance of staphylococcal species as pathogens and the frequency of oxacillin... As cardiac implantable electronic devices become increasingly common, infections (generally caused by staphylococci) are also more frequent. In addition to antibiotic therapy, complete removal of the device is required for cure.

Baddour L.M.Cha Y.-M.Wilson W.R.

2012-08-30T23:59:59.000Z

428

Stable blue phosphorescent organic light emitting devices  

DOE Patents (OSTI)

Novel combination of materials and device architectures for organic light emitting devices is provided. An organic light emitting device, is provided, having an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer includes a host and a phosphorescent emissive dopant having a peak emissive wavelength less than 500 nm, and a radiative phosphorescent lifetime less than 1 microsecond. Preferably, the phosphorescent emissive dopant includes a ligand having a carbazole group.

Forrest, Stephen R.; Thompson, Mark; Giebink, Noel

2014-08-26T23:59:59.000Z

429

NREL: Measurements and Characterization - Device Performance Measurement  

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

Device Performance Measurement Device Performance Measurement The National Renewable Energy Laboratory is the premier U.S. Department of Energy (DOE) research laboratory for testing performance of commercial, developmental, and research photovoltaic (PV) devices. Our Device Performance group is one of only two laboratories in the world to hold an International Organization for Standardization (ISO) 17025 accreditation for primary reference cell and secondary module calibration, in addition to accreditation for secondary reference cell calibration under American Society for Testing Materials (ASTM), and International Electrotechnical Commission (IEC) standards. One of only four laboratories in the world certified in accordance with the IEC standard for calibrating terrestrial primary reference PV cells, we

430

Smart prevention device for foot infection  

Science Journals Connector (OSTI)

The device "Power Insoles" is an electronic shoe insole that ... throughout the day, and prevent apparition of foot ulcers by informing the patient through biofeedback...

M Rocklinger; P Vacherand; F Brönnimann; A Mathieu; A Stéphane; Z Pataky

2011-06-01T23:59:59.000Z

431

Organic light emitting devices for illumination  

DOE Patents (OSTI)

An organic light emitting device is provided. The device has a plurality of regions, each region having an organic emissive layer adapted to emit a different spectrum of light. The regions in combination emit light suitable for illumination purposes. The area of each region may be selected such that the device is more efficient that an otherwise equivalent device having regions of equal size. The regions may have an aspect ratio of at least about four. All parts of any given region may be driven at the same current.

Hack, Michael (Lambertville, NJ); Lu, Min-Hao Michael (Lawrenceville, NJ); Weaver, Michael S. (Princeton, NJ)

2010-02-16T23:59:59.000Z

432

Tunable Graphene Electronic Devices - Energy Innovation Portal  

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

Advanced Materials Advanced Materials Find More Like This Return to Search Tunable Graphene Electronic Devices Lawrence Berkeley National Laboratory Contact LBL About This...

433

Passive gas separator and accumulator device  

DOE Patents (OSTI)

A separation device employing a gas separation filter and swirler vanes for separating gas from a gasliquid mixture is provided. The cylindrical filter utilizes the principle that surface tension in the pores of the filter prevents gas bubbles from passing through. As a result, the gas collects in the interior region of the filter and coalesces to form larger bubbles in the center of the device. The device is particularly suited for use in microgravity conditions since the swirlers induce a centrifugal force which causes liquid to move from the inner region of the filter, pass the pores, and flow through the outlet of the device while the entrained gas is trapped by the filter. The device includes a cylindrical gas storage screen which is enclosed by the cylindrical gas separation filter. The screen has pores that are larger than those of the filters. The screen prevents larger bubbles that have been formed from reaching and interfering with the pores of the gas separation filter. The device is initially filled with a gas other than that which is to be separated. This technique results in separation of the gas even before gas bubbles are present in the mixture. Initially filling the device with the dissimilar gas and preventing the gas from escaping before operation can be accomplished by sealing the dissimilar gas in the inner region of the separation device with a ruptured disc which can be ruptured when the device is activated for use.

Choe, Hwang (Saratoga, CA); Fallas, Thomas T. (Berkeley, CA)

1994-01-01T23:59:59.000Z

434

Passive gas separator and accumulator device  

DOE Patents (OSTI)

A separation device employing a gas separation filter and swirler vanes for separating gas from a gas-liquid mixture is provided. The cylindrical filter utilizes the principle that surface tension in the pores of the filter prevents gas bubbles from passing through. As a result, the gas collects in the interior region of the filter and coalesces to form larger bubbles in the center of the device. The device is particularly suited for use in microgravity conditions since the swirlers induce a centrifugal force which causes liquid to move from the inner region of the filter, pass the pores, and flow through the outlet of the device while the entrained gas is trapped by the filter. The device includes a cylindrical gas storage screen which is enclosed by the cylindrical gas separation filter. The screen has pores that are larger than those of the filters. The screen prevents larger bubbles that have been formed from reaching and interfering with the pores of the gas separation filter. The device is initially filled with a gas other than that which is to be separated. This technique results in separation of the gas even before gas bubbles are present in the mixture. Initially filling the device with the dissimilar gas and preventing the gas from escaping before operation can be accomplished by sealing the dissimilar gas in the inner region of the separation device with a ruptured disc which can be ruptured when the device is activated for use. 3 figs.

Choe, H.; Fallas, T.T.

1994-08-02T23:59:59.000Z

435

Low temperature proton conducting oxide devices  

DOE Patents (OSTI)

A device for conducting protons at a temperature below 550.degree. C. includes a LAMOX ceramic body characterized by an alpha crystalline structure.

Armstrong, Timothy R. (Clinton, TN); Payzant, Edward A. (Oak Ridge, TN); Speakman, Scott A. (Oak Ridge, TN); Greenblatt, Martha (Highland Park, NJ)

2008-08-19T23:59:59.000Z

436

Silicon Materials and Devices (Fact Sheet)  

SciTech Connect

This National Center for Photovoltaics sheet describes the capabilities of its silicon materials and devices research. The scope and core competencies and capabilities are discussed.

Not Available

2013-06-01T23:59:59.000Z

437

Silicon Materials and Devices (Fact Sheet)  

SciTech Connect

Capabilities fact sheet for the National Center for Photovoltaics: Silicon Materials and Devices that includes scope, core competencies and capabilities, and contact/web information.

Not Available

2011-06-01T23:59:59.000Z

438

Application of microfluidic device to malaria diagnosis .  

E-Print Network (OSTI)

??Of many diagnostic devices and technology developed, microfluidics could be superior in terms of ease of fabrication, cost, portability, speed and sensitivity. The application of… (more)

Zhang, Rou

2007-01-01T23:59:59.000Z

439

Novel Nanoparticle Tracking Device | The Ames Laboratory  

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

Novel Nanoparticle Tracking Device A new technique simultaneously illuminates the location, orientation and rotation in 3D of individual gold nanorods. Gold nanorods have been used...

440

Environmental Effects on Power Electronic Devices | Department...  

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

Publications Environmental Effects on Power Electronic Devices Direct-Cooled Power Electronic Substrate ORNL: Low-Cost Direct Bonded Aluminum (DBA) Substrates (Agreement ID:23278)...

Note: This page contains sample records for the topic "adiabatic matching device" 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

Environmental Effects on Power Electronic Devices | Department...  

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

Publications Environmental Effects on Power Electronic Devices ORNL: Low-Cost Direct Bonded Aluminum (DBA) Substrates (Agreement ID:23278) Direct-Cooled Power Electronic Substrate...

442

RF Micro Devices | Open Energy Information  

Open Energy Info (EERE)

for Others) for this property. Partnering Center within NREL National Center for Photovoltaics Partnership Year 2009 RF Micro Devices is a company located in Greensboro, NC....

443

Chemical beam epitaxy for high efficiency photovoltaic devices  

SciTech Connect

InP-based multijunction tandem solar cells show great promise for the conversion efficiency (eta) and high radiation resistance. InP and its related ternary and quanternary compound semiconductors such as InGaAs and InGaAsP offer desirable combinations for energy bandgap values which are very suitable for multijunction tandem solar cell applications. The monolithically integrated InP/In(0.53)Ga(0.47)As tandem solar cells are expected to reach efficiencies above 30 percent. Wanlass, et.al., have reported AMO efficiencies as high as 20.1% for two terminal cells fabricated using atmospheric-pressure metalorganic vapor phase epitaxy (APMOVPE). The main limitations in their technique are first related to the degradation of the intercell ohmic contact (IOC), in this case the In(0.53)Ga(0.47)As tunnel junction during the growth of the top InP subcell structure, and second to the current matching, often limited by the In(0.53)Ga(0.47)As bottom subcell. Chemical beam epitaxy (CBE) has been shown to allow the growth of high quality materials with reproducible complex compositional and doping profiles. The main advantage of CBE compared to metalorganic chemical vapor deposition (MOCVD), the most popular technique for InP-based photovoltaic device fabrication, is the ability to grow high purity epilayers at much lower temperatures (450 C - 530 C). In a recent report it was shown that cost-wise CBE is a breakthrough technology for photovoltaic (PV) solar energy progress in the energy conversion efficiency of InP-based solar cells fabricated using chemical beam epitaxy. This communication summarizes recent results on PV devices and demonstrates the strength of this new technology.

Bensaoula, A.; Freundlich, A.; Vilela, M. F.; Medelci, N.; Renaud, P.

1994-09-01T23:59:59.000Z

444

Performance of Installed Cooking Exhaust Devices  

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

Performance of Installed Cooking Exhaust Devices Performance of Installed Cooking Exhaust Devices Title Performance of Installed Cooking Exhaust Devices Publication Type Journal Article Refereed Designation Refereed LBNL Report Number LBNL-5265E Year of Publication 2012 Authors Singer, Brett C., William W. Delp, Michael G. Apte, and Phillip N. Price Journal Indoor Air Volume 22 Issue 3 Pagination 224-234 Date Published 06/2012 Keywords carbon monoxide, natural gas burners, nitrogen dioxide, range hood, task ventilation, unvented combustion, indoor environment group, Range Hood Test Facility Abstract The performance metrics of airflow, sound, and combustion product capture efficiency (CE) were measured for a convenience sample of fifteen cooking exhaust devices, as installed in residences. Results were analyzed to quantify the impact of various device- and installation-dependent parameters on CE. Measured maximum airflows were 70% or lower than values noted on product literature for 10 of the devices. Above-the-cooktop devices with flat bottom surfaces (no capture hood) - including exhaust fan/microwave combination appliances - were found to have much lower CE at similar flow rates, compared to devices with capture hoods. For almost all exhaust devices and especially for rear-mounted downdraft exhaust and microwaves, CE was substantially higher for back compared with front burner use. Flow rate, and the extent to which the exhaust device extends over the burners that are in use, also had a large effect on CE. A flow rate of 95 liters per second (200 cubic feet per minute) was necessary, but not sufficient, to attain capture efficiency in excess of 75% for the front burners. A-weighted sound levels in kitchens exceeded 57 dB when operating at the highest fan setting for all 14 devices evaluated for sound performance.

445

Portable basketball rim testing device  

DOE Patents (OSTI)

A portable basketball rim rebound testing device 10 is illustrated in two preferred embodiments for testing the rebound or energy absorption characteristics of a basketball rim 12 and its accompanying support to determine likely rebound or energy absorption charcteristics of the system. The apparatus 10 includes a depending frame 28 having a C-clamp 36 for releasably rigidly connecting the frame to the basketball rim 12. A glide weight 60 is mounted on a guide rod 52 permitting the weight 60 to be dropped against a calibrated spring 56 held on an abutment surface on the rod to generate for deflecting the basketball rim and then rebounding the weight upwardly. A photosensor 66 is mounted on the depending frame 28 to sense passage of reflective surfaces 75 on the weight to thereby obtain sufficient data to enable a processing means 26 to calculate the rebound velocity and relate it to an energy absorption percentage rate of the rim system 12. A readout is provided to display the energy absorption percentage.

Abbott, W. Bruce (610 Clover St., Cheney, WA 99004); Davis, Karl C. (Box 722, Richland, WA 99352)

1993-01-01T23:59:59.000Z

446

Josephson-junction logic device  

SciTech Connect

A Josephson-junction logic device having inductances and forming and AND circuit is described comprising: at least two superconductive loops, each having at least two Josephson-junction elements and a loop inductance connected between each of at least two Josephson-junction elements; at least two logic input signal lines, operatively connected to receive input currents, for supplying logic input signals; a bias line, operatively connected to at least two super conductive loops, for supplying a bias current to at least two superconductive loops, the bias current satisfying the condition vertical bar I/sub ml/ vertical bar > vertical bar I/sub mo/ vertical bar, where I/sub ml/ is a first threshold current, for switching the AND circuit, determined when at least two logic input signal lines receive different magnitude input currents and where I/sub mo/ is a second threshold current for switching the AND circuit, determined when at least two logic input signal lines receive the same magnitude input currents; and output terminals, operatively connected to one of at least two Josephson-junction elements, for outputting a logic output signal as a result of a logic operation performed on the logic input signals, whereby an operating margin of the AND circuit is expanded.

Suzuki, H.

1987-12-01T23:59:59.000Z

447

Control device for vehicle speed  

SciTech Connect

This patent describes a control device for vehicle speed comprising: a throttle driving means operatively coupled to a throttle valve of a vehicle; a set switch means for commanding memorization of the vehicle speed; a resume switch means for commanding read of the vehicle speed; a vehicle speed detecting means for generating a signal in accordance with the vehicle speed; a vehicle speed memory; an electronical control means for memorizing in the vehicle speed memory vehicle speed information corresponding to the signal obtained from the vehicle speed detecting means in response to actuation of the set switch means. The control means is also for reading out the content of the vehicle speed memory in response to actuation of the resume switch means to control the throttle driving means in accordance with the read-out content; a power supply means for supplying power to the electronical control means; and a power supply control switch means for controlling supply of power to the electronical control means in response to the state of at least one of the set switch means and the resume switch means and the state of the electronical control means. The improvement described here comprises the electronical control means sets the power supply control switch means into such a state that supply of power to the electronical control means is turned OFF, when vehicle speed information is not memorized in the vehicle speed memory.

Kawata, S.; Hyodo, H.

1987-03-03T23:59:59.000Z

448

Adiabatic-connection fluctuation-dissipation DFT for the structural properties of solids-the renormalized ALDA and electron gas kernels  

E-Print Network (OSTI)

We present calculations of the correlation energies of crystalline solids and isolated systems within the adiabatic-connection fluctuation-dissipation formulation of density-functional theory. We perform a quantitative comparison of a set of model exchange-correlation kernels originally derived for the homogeneous electron gas (HEG), including the recently-introduced renormalized adiabatic local-density approximation (rALDA) and also kernels which (a) satisfy known exact limits of the HEG, (b) carry a frequency dependence or (c) display a 1/$k^2$ divergence for small wavevectors. After generalizing the kernels to inhomogeneous systems through a reciprocal-space averaging procedure, we calculate the lattice constants and bulk moduli of a test set of 10 solids consisting of tetrahedrally-bonded semiconductors (C, Si, SiC), ionic compounds (MgO, LiCl, LiF) and metals (Al, Na, Cu, Pd). We also consider the atomization energy of the H$_2$ molecule. We compare the results calculated with different kernels to those ...

Patrick, Christopher E

2015-01-01T23:59:59.000Z

449

Methods for dispensing mercury into devices  

DOE Patents (OSTI)

A process for dispensing mercury into devices which requires mercury. Mercury is first electrolytically separated from either HgO or Hg.sub.2 Cl.sub.2 and plated onto a cathode wire. The cathode wire is then placed into a device requiring mercury.

Grossman, Mark W. (Belmont, MA); George, William A. (Rockport, MA)

1987-04-28T23:59:59.000Z

450

Methods for dispensing mercury into devices  

DOE Patents (OSTI)

A process is described for dispensing mercury into devices which requires mercury. Mercury is first electrolytically separated from either HgO or Hg[sub 2]Cl[sub 2] and plated onto a cathode wire. The cathode wire is then placed into a device requiring mercury. 2 figs.

Grossman, M.W.; George, W.A.

1987-04-28T23:59:59.000Z

451

Chapter 13 -Firearms, Weapons, Destructive Devices  

E-Print Network (OSTI)

53 Chapter 13 - Firearms, Weapons, Destructive Devices The Oregon Administrative Rules contain OAR Definitions (1) "Firearm" means a weapon or device, by whatever name known, which is designed to expel chemical action, and which is readily capable for use as a weapon. (2) "Weapon" means any knife having

452

Protection of microelectronic devices during packaging  

DOE Patents (OSTI)

The present invention relates to a method of protecting a microelectronic device during device packaging, including the steps of applying a water-insoluble, protective coating to a sensitive area on the device; performing at least one packaging step; and then substantially removing the protective coating, preferably by dry plasma etching. The sensitive area can include a released MEMS element. The microelectronic device can be disposed on a wafer. The protective coating can be a vacuum vapor-deposited parylene polymer, silicon nitride, metal (e.g. aluminum or tungsten), a vapor deposited organic material, cynoacrylate, a carbon film, a self-assembled monolayered material, perfluoropolyether, hexamethyldisilazane, or perfluorodecanoic carboxylic acid, silicon dioxide, silicate glass, or combinations thereof. The present invention also relates to a method of packaging a microelectronic device, including: providing a microelectronic device having a sensitive area; applying a water-insoluble, protective coating to the sensitive area; providing a package; attaching the device to the package; electrically interconnecting the device to the package; and substantially removing the protective coating from the sensitive area.

Peterson, Kenneth A. (Albuquerque, NM); Conley, William R. (Tijeras, NM)

2002-01-01T23:59:59.000Z

453

The history of nuclear weapon safety devices  

SciTech Connect

The paper presents the history of safety devices used in nuclear weapons from the early days of separables to the latest advancements in MicroElectroMechanical Systems (MEMS). Although the paper focuses on devices, the principles of Enhanced Nuclear Detonation Safety implementation will also be presented.

Plummer, D.W.; Greenwood, W.H.

1998-06-01T23:59:59.000Z

454

Performance of Installed Cooking Exhaust Devices  

SciTech Connect

The performance metrics of airflow, sound, and combustion product capture efficiency (CE) were measured for a convenience sample of fifteen cooking exhaust devices, as installed in residences. Results were analyzed to quantify the impact of various device- and installation-dependent parameters on CE. Measured maximum airflows were 70% or lower than values noted on product literature for 10 of the devices. Above-the-cooktop devices with flat bottom surfaces (no capture hood) – including exhaust fan/microwave combination appliances – were found to have much lower CE at similar flow rates, compared to devices with capture hoods. For almost all exhaust devices and especially for rear-mounted downdraft exhaust and microwaves, CE was substantially higher for back compared with front burner use. Flow rate, and the extent to which the exhaust device extends over the burners that are in use, also had a large effect on CE. A flow rate of 95 liters per second (200 cubic feet per minute) was necessary, but not sufficient, to attain capture efficiency in excess of 75% for the front burners. A-weighted sound levels in kitchens exceeded 57 dB when operating at the highest fan setting for all 14 devices evaluated for sound performance.

Singer, Brett C.; Delp, William W.; Apte, Michael G.; Price, Philip N.

2011-11-01T23:59:59.000Z

455

Discrete control of resonant wave energy devices  

Science Journals Connector (OSTI)

...Society 28 January 2012 research-article Articles 1006...peaks and troughs of wave energy: the dreams and the...control of deep water wave energy devices using an active...www.iwwwfb.org/Abstracts/iwwwfb20/iwwwfb20...latching control of a wave energy device in regular and...

2012-01-01T23:59:59.000Z

456

Multicolored Electrochromism in Polymers: Structures and Devices  

E-Print Network (OSTI)

Multicolored Electrochromism in Polymers: Structures and Devices Avni A. Argun, Pierre-Henri Aubert May 12, 2004 A review of electrochromic (EC) polymers and their applications in absorption/transmission, reflective, and patterned electrochromic devices (ECDs) is presented. Fundamental properties of EC materials

Tanner, David B.

457

Development of Microfluidic Devices Incorporating Electrochemical Detection  

E-Print Network (OSTI)

Development of Microfluidic Devices Incorporating Electrochemical Detection Anne Regel Submitted to the Department of Chemistry and the Graduate School of the University of Kansas in partial fulfillment of the requirements for the degree... _______________________________ Karen Nordheden Dissertation Defense: August 21, 2013 ii The Dissertation Committee for Anne Regel certifies that this is the approved version of the following dissertation: Development of Microfluidic Devices Incorporating...

Regel, Anne

2014-05-31T23:59:59.000Z

458

Enhanced Thin Film Organic Photovoltaic Devices  

A novel structure design for thin film organic photovoltaic (OPV) devices provides a system for increasing the optical absorption in the active layer. The waveguided structure permits reduction of the active layer thickness, resulting in enhanced charge collection and extraction, leading to improved power conversion efficiency compared to standard OPV devices....

2014-01-10T23:59:59.000Z

459

Chapter 9: Photovoltaic DevicesChapter 9: Photovoltaic Devices Solar energy spectrumSolar energy spectrum  

E-Print Network (OSTI)

Chapter 9: Photovoltaic DevicesChapter 9: Photovoltaic Devices Solar energy spectrumSolar energy Solar Energy? · Clean · Nearly unlimited PHYS5320 Chapter Nine 3 #12;S l ll l t PHYS5320 Chapter Nine 4 Solar cell plant #12;Cars powered by photovoltaic devices PHYS5320 Chapter Nine 5 #12;Solar Energy

Wang, Jianfang

460

Energy Conversion DevicesEnergy Conversion Devices Fuel Cell Electrocatalyst Development Program  

E-Print Network (OSTI)

for several groups of electrocatalysts ECD PEMFC Catalyst Development Evaluation programs exist for severalEnergy Conversion Devices PEMFC Electrocatalyst Development Program Contact information: Dr. Peter Faguy pfaguyEnergy Conversion DevicesEnergy Conversion Devices Fuel Cell Electrocatalyst Development Program

Note: This page contains sample records for the topic "adiabatic matching device" 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

Application of Genetic Algorithm (GA) in History Matching of the Vapour Extraction (VAPEX) Heavy Oil Recovery Process  

Science Journals Connector (OSTI)

This paper presents the application of genetic algorithm (GA) to the history-matching problem. As history matching of VAPEX (vapour extraction) experiments is a complex, highly nonlinear, and non-unique invers...

Suxin Xu; Min Zhang; Fanhua Zeng; Christine Chan

2014-11-01T23:59:59.000Z

462

System and method for networking electrochemical devices  

DOE Patents (OSTI)

An improved electrochemically active system and method including a plurality of electrochemical devices, such as fuel cells and fluid separation devices, in which the anode and cathode process-fluid flow chambers are connected in fluid-flow arrangements so that the operating parameters of each of said plurality of electrochemical devices which are dependent upon process-fluid parameters may be individually controlled to provide improved operating efficiency. The improvements in operation include improved power efficiency and improved fuel utilization in fuel cell power generating systems and reduced power consumption in fluid separation devices and the like through interstage process fluid parameter control for series networked electrochemical devices. The improved networking method includes recycling of various process flows to enhance the overall control scheme.

Williams, Mark C. (Morgantown, WV); Wimer, John G. (Morgantown, WV); Archer, David H. (Pittsburgh, PA)

1995-01-01T23:59:59.000Z

463

High energy density redox flow device  

DOE Patents (OSTI)

Redox flow devices are described in which at least one of the positive electrode or negative electrode-active materials is a semi-solid or is a condensed ion-storing electroactive material, and in which at least one of the electrode-active materials is transported to and from an assembly at which the electrochemical reaction occurs, producing electrical energy. The electronic conductivity of the semi-solid is increased by the addition of conductive particles to suspensions and/or via the surface modification of the solid in semi-solids (e.g., by coating the solid with a more electron conductive coating material to increase the power of the device). High energy density and high power redox flow devices are disclosed. The redox flow devices described herein can also include one or more inventive design features. In addition, inventive chemistries for use in redox flow devices are also described.

Chiang, Yet-Ming; Carter, W. Craig; Ho, Bryan Y; Duduta, Mihai; Limthongkul, Pimpa

2014-05-13T23:59:59.000Z

464

Performance bounds on matched-field methods for source localization and estimation of ocean environmental parameters  

E-Print Network (OSTI)

Matched-field methods concern estimation of source location and/or ocean environmental parameters by exploiting full wave modeling of acoustic waveguide propagation. Typical estimation performance demonstrates two fundamental ...

Xu, Wen, 1967-

2001-01-01T23:59:59.000Z

465

Design of an ICRF fast matching system on Alcator C-Mod  

E-Print Network (OSTI)

In Ion Cyclotron Radiofrequency Heating (ICRH) for tokamaks, fast variations of the antenna loading impedance limit flexible and robust high-power operations. In this thesis, novel solutions for real-time matching and ...

Parisot, Alexandre, 1979-

2004-01-01T23:59:59.000Z

466

CASH FLOW MATCHING PROBLEM WITH CVaR CONSTRAINTS: A CASE STUDY WITH PORTFOLIO SAFEGUARD  

E-Print Network (OSTI)

CASH FLOW MATCHING PROBLEM WITH CVaR CONSTRAINTS: A CASE STUDY WITH PORTFOLIO SAFEGUARD Danjue problem is minimized. We use Portfolio Safeguard (PSG) decision support tool to solve the optimization

Uryasev, Stanislav

467

A Hierarchical Multiscale Approach to History Matching and Optimization for Reservoir Management in Mature Fields  

E-Print Network (OSTI)

Reservoir management typically focuses on maximizing oil and gas recovery from a reservoir based on facts and information while minimizing capital and operating investments. Modern reservoir management uses history-matched simulation model...

Park, Han-Young

2012-10-19T23:59:59.000Z

468

Microsoft PowerPoint - 4_Gary_Wednesday 5-22 Transit Matching...  

National Nuclear Security Administration (NNSA)

Matching Case Study Gary Hirsch, PSI Scenario 1 Australia 2 Scenario 1 Australia 3 Scenario 1 Australia 4 Scenario 2 Mexico 5 Scenario 2 Mexico 6 Scenario 2 Mexico 7 Scenario 3...

469

An Empirical Study of Block Matching Techniques for the Detection of Moving Objects  

E-Print Network (OSTI)

traffic and weather conditions are used to evaluate the techniques. A coherence metric and the average of motion detection. We present an empirical study of the block matching techniques using these metrics

Kamath, Chandrika

470

A Perfectly Matched Layer Method for the Navier-Stokes equations  

E-Print Network (OSTI)

The Perfectly Matched Layer Method (PML) has found widespread application as a high-accuracy, non-reflecting boundary treatment in many wave propagation simulations. However, in the area of computational fluid dynamics, ...

Whitney, John Peter, 1982-

2006-01-01T23:59:59.000Z

471

Deep Levels in p-Type InGaAsN Lattice Matched to GaAs  

SciTech Connect

Deep level transient spectroscopy (DLTS) measurements were utilized to investigate deep level defects in metal-organic chemical deposition (MOCVD)-grown unintentionally doped p-type InGaAsN films lattice matched to GaAs. The as-grown material displayed a high concentration of deep levels distributed within the bandgap, with a dominant hole trap at E{sub v} + 0.10 eV. Post-growth annealing simplified the deep level spectra, enabling the identification of three distinct hole traps at 0.10 eV, 0.23 eV, and 0.48 eV above the valence band edge, with concentrations of 3.5 x 10{sup 14} cm{sup {minus}3}, 3.8 x 10{sup 14} cm{sup {minus}3}, and 8.2 x 10{sup 14} cm{sup {minus}3}, respectively. A direct comparison between the as-grown and annealed spectra revealed the presence of an additional midgap hole trap, with a concentration of 4 x 10{sup 14} cm{sup {minus}3} in the as-grown material. The concentration of this trap is sharply reduced by annealing, which correlates with improved material quality and minority carrier properties after annealing. Of the four hole traps detected, only the 0.48 eV level is not influenced by annealing, suggesting this level may be important for processed InGaAsN devices in the future.

Allerman, A.A.; Jones, E.D.; Kaplar, R.J.; Kurtz, S.R.; Kwon, D.; Ringel, S.A.

1999-03-02T23:59:59.000Z

472

Vacuum energy, spectral determinant and heat kernel asymptotics of graph Laplacians with general vertex matching conditions  

E-Print Network (OSTI)

We consider Laplace operators on metric graphs, networks of one-dimensional line segments (bonds), with matching conditions at the vertices that make the operator self-adjoint. Such quantum graphs provide a simple model of quantum mechanics in a classically chaotic system with multiple scales corresponding to the lengths of the bonds. For graph Laplacians we briefly report results for the spectral determinant, vacuum energy and heat kernel asymptotics of general graphs in terms of the vertex matching conditions.

J. M. Harrison; K. Kirsten

2010-03-16T23:59:59.000Z

473

Novel Ferroelectric Nanostructures for Nanoelectronic Devices  

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

Scientific Highlight 31 March 2008 Novel Ferroelectric Nanostructures for Nanoelectronic Devices New approaches to the fabrication of ferroelectric nanostructures onto substrates are critical for the development of competitive functional devices that successfully integrate at nanoscale ferroelectrics as alternative materials in the microelectronic industry. These approaches have to meet reliability and utilization requirements to realize a cost-effective production of an increasing demand for ultra-high-density memories or nanometric electromechanical systems. An important challenge in the fabrication of ferroelectric nanomaterials supported onto substrates is the ability to fabricate an organized arrangement of the nanostructures. This is a key point for the applications of ferroelectrics in nanoelectronic devices.

474

Integrated fuses for OLED lighting device  

DOE Patents (OSTI)

An embodiment of the present invention pertains to an electroluminescent lighting device for area illumination. The lighting device is fault tolerant due, in part, to the patterning of one or both of the electrodes into strips, and each of one or more of these strips has a fuse formed on it. The fuses are integrated on the substrate. By using the integrated fuses, the number of external contacts that are used is minimized. The fuse material is deposited using one of the deposition techniques that is used to deposit the thin layers of the electroluminescent lighting device.

Pschenitzka, Florian (San Jose, CA)

2007-07-10T23:59:59.000Z

475

Self bleaching photoelectrochemical-electrochromic device  

DOE Patents (OSTI)

A photoelectrochemical-electrochromic device comprising a first transparent electrode and a second transparent electrode in parallel, spaced relation to each other. The first transparent electrode is electrically connected to the second transparent electrode. An electrochromic material is applied to the first transparent electrode and a nanoporous semiconductor film having a dye adsorbed therein is applied to the second transparent electrode. An electrolyte layer contacts the electrochromic material and the nanoporous semiconductor film. The electrolyte layer has a redox couple whereby upon application of light, the nanoporous semiconductor layer dye absorbs the light and the redox couple oxidizes producing an electric field across the device modulating the effective light transmittance through the device.

Bechinger, Clemens S. (Konstanz, DE); Gregg, Brian A. (Golden, CO)

2002-04-09T23:59:59.000Z

476

Organic photosensitive devices using subphthalocyanine compounds  

DOE Patents (OSTI)

An organic photosensitive optoelectronic device, having a donor-acceptor heterojunction of a donor-like material and an acceptor-like material and methods of making such devices is provided. At least one of the donor-like material and the acceptor-like material includes a subphthalocyanine, a subporphyrin, and/or a subporphyrazine compound; and/or the device optionally has at least one of a blocking layer or a charge transport layer, where the blocking layer and/or the charge transport layer includes a subphthalocyanine, a subporphyrin, and/or a subporphyrazine compound.

Rand, Barry (Princeton, NJ); Forrest, Stephen R. (Ann Arbor, MI); Mutolo, Kristin L. (Hollywood, CA); Mayo, Elizabeth (Alhambra, CA); Thompson, Mark E. (Anaheim Hills, CA)

2011-07-05T23:59:59.000Z

477

Optoelectronic semiconductor device and method of fabrication  

DOE Patents (OSTI)

An optoelectronic device comprising an optically active layer that includes a plurality of domes is presented. The plurality of domes is arrayed in two dimensions having a periodicity in each dimension that is less than or comparable with the shortest wavelength in a spectral range of interest. By virtue of the plurality of domes, the optoelectronic device achieves high performance. A solar cell having high energy-conversion efficiency, improved absorption over the spectral range of interest, and an improved acceptance angle is presented as an exemplary device.

Cui, Yi; Zhu, Jia; Hsu, Ching-Mei; Fan, Shanhui; Yu, Zongfu

2014-11-25T23:59:59.000Z

478

1-ID: Sector 1, Insertion Device Beamline  

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

1-ID beamline schematic 1-ID beamline schematic ID on-axis brilliance values 1-ID - Sector 1, Insertion Device Beamline Responsible Scientists Jon Almer, phone: (630) 252-1049, e-mail: almer@aps.anl.gov Sarvjit Shastri, phone: (630) 252-0129, e-mail: shastri@aps.anl.gov John Okasinski, phone: (630) 252-0162, e-mail: okasinski@aps.anl.gov Peter Kenesei, phone: (630) 252-0133, e-mail: kenesei@aps.anl.gov Scientific Programs Coupled high-energy SAXS/WAXS studies (HE-SAXS/WAXS) High-energy diffraction microscopy (HEDM) Single-grain studies Stress/strain/texture studies Pair-distribution function (PDF) measurements High-energy fluorescence Source Characteristics Upstream insertion device: APS Undulator A No. of Poles 72 Undulator Period 3.3 cm Device Length 2.4 m Minimum Gap 11 mm Downstream insertion device

479

Definition: Facts Device | Open Energy Information  

Open Energy Info (EERE)

Facts Device Facts Device Jump to: navigation, search Dictionary.png Facts Device An electronic system and other static equipment that provide control of one or more AC transmission system parameters to enhance controllability and increase power transfer capability.[1] Related Terms transmission lines, system, transmission line References ↑ [www.smartgrid.gov/sites/default/files/pdfs/description_of_assets.pdf SmartGrid.gov 'Description of Assets'] An in LikeLike UnlikeLike You like this.Sign Up to see what your friends like. line Glossary Definition Retrieved from "http://en.openei.org/w/index.php?title=Definition:Facts_Device&oldid=480398" Categories: Definitions ISGAN Definitions What links here Related changes Special pages Printable version Permanent link Browse properties

480

Performance of Installed Cooking Exhaust Devices  

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

Performance of Installed Cooking Exhaust Devices Performance of Installed Cooking Exhaust Devices Brett C. Singer, William W. Delp, Michael G. Apte, Philip N. Price Environmental Energy Technologies Division Lawrence Berkeley National Laboratory Berkeley, California, 94720 November 2011 Direct funding for this research was provided by the California Energy Commission through Contracts 500-05-026 and 500-08-061. Institutional support is provided to LBNL by the U.S. Department of Energy, Office of Science under Contract DE-AC02-05CH11231. LBNL-5265E-r1(3) Singer et al., Performance of Installed Cooking Exhaust Devices LBNL-5265E-r1(3) Performance of Installed Cooking Exhaust Devices Brett C. Singer 1

Note: This page contains sample records for the topic "adiabatic matching device" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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481

Stunning device as a suicide weapon  

Science Journals Connector (OSTI)

Thirteen patients who had attempted suicide with the stunning device, were treated over a time span of eleven years. Five of them died. The survivors made a satisfactory recovery with minor neurological sequel...

B. Klun; V. Jankovi?

1989-01-01T23:59:59.000Z

482

Investigation of nerve injury through microfluidic devices  

Science Journals Connector (OSTI)

...compartments with chemical reagents. Microfluidic platforms further facilitate...Microfluidic platforms can be broadly...devices that model chemical and physical...vivo setting. Chemical injury can be...microfluidic platform, whereas physical...

2014-01-01T23:59:59.000Z

483

Rating of Solar Energy Devices (Texas)  

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

The Public Utility Commission has regulatory authority over solar energy devices installed and used in the state of Texas. The Commission can choose to adopt standards pertaining to the rating of...

484

Asbestos : operating system security for mobile devices  

E-Print Network (OSTI)

This thesis presents the design and implementation of a port of the Asbestos operating system to the ARM processor. The port to the ARM allows Asbestos to run on mobile devices such as cell phones and personal digital ...

Stevenson, Martijn

2006-01-01T23:59:59.000Z

485

Phosphorylation based insulation devices design and implementation  

E-Print Network (OSTI)

This thesis presents the analysis of a phosphorylation based insulation device implemented in Saccharomyces cerevisae and the minimization of the retroactivity to the input and retroactivity to the output of a single cycle ...

Rivera Ortiz, Phillip M. (Phillip Michael)

2013-01-01T23:59:59.000Z

486

Chemically sensitive interfaces on SAW devices  

SciTech Connect

Using surface acoustic wave (SAW) devices, three approaches to the effective use of chemically sensitive interfaces that are not highly chemically selective have been examined: (1) molecular identification from time-resolved permeation transients; (2) using multifrequency SAW devices to determine the frequency dependence of analyte/film interactions; (3) use of an array of SAW devices bearing diverse chemically sensitive interfaces to produce a distinct response pattern for each analyte. In addition to their well-known sensitivity to mass changes (0.0035 monolayer of N{sub 2} can be measured), SAW devices respond to the mechanical and electronic properties of thin films, enhancing response information content but making a thorough understanding of the perturbation critical. Simultaneous measurement of changes in frequency and attenuation, which can provide the information necessary to determine the type of perturbation, are used as part of the above discrimination schemes.

Ricco, A.J.; Martin, S.J. [Sandia National Labs., Albuquerque, NM (United States); Crooks, R.M.; Xu, Chuanjing [Texas A and M Univ., College Station, TX (United States); Allred, R.E. [Adherent Technologies, Inc., Albuquerque, NM (United States)

1993-11-01T23:59:59.000Z

487

Theoretical Analysis of Prospective Nanoelectronic Devices  

E-Print Network (OSTI)

, albeit at deep refrigeration. Alterna- tively, the comparator may be used for measurement of current (or . . . . . . . . . . . . . . . . 21 2.2.4 Charge Density . . . . . . . . . . . . . . . . . . . . . . 22 2.2.5 Device Current

488

Propeller based human powered swimming device  

E-Print Network (OSTI)

Currently the only human powered swimming device widely sold on the market are swim flippers. However, flippers are not efficient for the human body, and there is a potential to increase the speed while swimming with a ...

Bunker, Kristine (Kristine Alina)

2014-01-01T23:59:59.000Z

489

Polymer-based electrocaloric cooling devices  

DOE Patents (OSTI)

Cooling devices (i.e., refrigerators or heat pumps) based on polymers which exhibit a temperature change upon application or removal of an electrical field or voltage, (e.g., fluoropolymers or crosslinked fluoropolymers that exhibit electrocaloric effect).

Zhang, Qiming; Lu, Sheng-Guo; Li, Xinyu; Gorny, Lee; Cheng, Jiping; Neese, Bret P; Chu, Baojin

2014-10-28T23:59:59.000Z

490

Towards reproducible, scalable lateral molecular electronic devices  

E-Print Network (OSTI)

1 Towards reproducible, scalable lateral molecular electronic devices Colm Durkan1,* & Qian Zhang 1: Nanoscience Centre, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom *: email: cd229@eng.cam.ac.uk (Dated...

Durkan, Colm; Zhang, Qian

2014-08-26T23:59:59.000Z

491

Heat Transfer in Thermoelectric Materials and Devices  

E-Print Network (OSTI)

Solid-state thermoelectric devices are currently used in applications ranging from thermocouple sensors to power generators in space missions, to portable air-conditioners and refrigerators. With the ever-rising demand ...

Tian, Zhiting

492

Testing of Kaonetics Devices at BNL  

SciTech Connect

The goal of these measurements was to evaluate whether there is evidence of emission of X-rays, gamma-rays, and neutrons by devices developed by Kaonetics Technologies, Inc. during their operation.

Bolotnikov, A.; Smith, G.; and James, R.B.

2011-06-01T23:59:59.000Z

493

A Nanophotonic Solar Thermophotovoltaic Device Andrej Lenerta  

E-Print Network (OSTI)

A Nanophotonic Solar Thermophotovoltaic Device Andrej Lenerta , David M. Biermana , Youngsuk Nama Laboratory b Research Laboratory of Electronics c Institute for Soldier Nanotechnology Massachusetts, Yongin, Korea Corresponding Author: Evelyn N. Wang Department of Mechanical Engineering Massachusetts

Soljaèiæ, Marin

494

Microelectronic Devices and Circuits - 2006 Electronic Edition  

E-Print Network (OSTI)

Combining semiconductor device physics and modeling with electronic circuit analysis and practice in a single sophomore/junior level microelectronics course, this textbook offers an integrated approach so students can truly ...

Fonstad, Clifton

2006-10-01T23:59:59.000Z

495

Molecular-scale devices from first principles  

E-Print Network (OSTI)

Electronic structure calculations are becoming more widely applied to complex and realistic materials systems and devices, reaching well into the domain of nanotechnology, with applications that include metal-molecule ...

Singh-Miller, Nicholas E. (Nicholas Edward)

2009-01-01T23:59:59.000Z

496

Applications of Graphene Devices in RF Communications  

E-Print Network (OSTI)

Graphene, a one-atom-thick layer of carbon atoms arranged in a honeycomb lattice, has recently attracted great interest among physicists and engineers. The combination of the unique properties of graphene with new device ...

Palacios, Tomas

497

Hyperpolarizable compounds and devices fabricated therefrom  

DOE Patents (OSTI)

Substituted compounds having relatively large molecular first order hyperpolarizabilities are provided, along with devices and materials containing them. In general, the compounds bear electron-donating and electron-withdrawing chemical substituents on a polyheterocyclic core. 13 figs.

Therien, M.J.; DiMagno, S.G.

1998-07-21T23:59:59.000Z

498

Carbon nanotube polymer composition and devices  

DOE Patents (OSTI)

A thin film device and compound having an anode, a cathode, and at least one light emitting layer between the anode and cathode, the at least one light emitting layer having at least one carbon nanotube and a conductive polymer.

Liu, Gao (Oakland, CA); Johnson, Stephen (Richmond, CA); Kerr, John B. (Oakland, CA); Minor, Andrew M. (El Cerrito, CA); Mao, Samuel S. (Castro Valley, CA)

2011-06-14T23:59:59.000Z

499

Thermal Insulation in Solar Thermal Devices  

Science Journals Connector (OSTI)

Thermal Insulation is a device or a practice which is used in a system for minimising heat losses caused due to transfer of heat from hotter to colder regions. It is one of the cheapest methods of energy conse...

B. C. Raychaudhuri

1986-01-01T23:59:59.000Z

500

Advanced nanofabrication of thermal emission devices  

E-Print Network (OSTI)

Nanofabricated thermal emission devices can be used to modify and modulate blackbody thermal radiation. There are many areas in which altering thermal radiation is extremely useful, especially in static power conversion, ...

Hurley, Fergus (Fergus Gerard)

2008-01-01T23:59:59.000Z