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Note: This page contains sample records for the topic "adiabatic matching device" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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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 (OSTI)

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 (OSTI)

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 (OSTI)

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

Growth of coincident site lattice matched semiconductor layers and devices on crystalline substrates  

DOE Patents [OSTI]

Methods of fabricating a semiconductor layer or device and said devices are disclosed. The methods include but are not limited to providing a substrate having a crystalline surface with a known lattice parameter (a). The method further includes growing a crystalline semiconductor layer on the crystalline substrate surface by coincident site lattice matched epitaxy, without any buffer layer between the crystalline semiconductor layer and the crystalline surface of the substrate. The crystalline semiconductor layer will be prepared to have a lattice parameter (a') that is related to the substrate lattice parameter (a). The lattice parameter (a') maybe related to the lattice parameter (a) by a scaling factor derived from a geometric relationship between the respective crystal lattices.

Norman, Andrew G; Ptak, Aaron J

2013-08-13T23:59:59.000Z

8

Adiabatic Quantum Transistors  

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

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

9

Adiabatic quantum computing for random satisfiability problems  

SciTech Connect (OSTI)

The discrete formulation of adiabatic quantum computing is compared with other search methods, classical and quantum, for random satisfiability (SAT) problems. With the number of steps growing only as the cube of the number of variables, the adiabatic method gives solution probabilities close to 1 for problem sizes feasible to evaluate via simulation on current computers. However, for these sizes the minimum energy gaps of most instances are fairly large, so the good performance scaling seen for small problems may not reflect asymptotic behavior where costs are dominated by tiny gaps. Moreover, the resulting search costs are much higher than for other methods. Variants of the quantum algorithm that do not match the adiabatic limit give lower costs, on average, and slower growth than the conventional GSAT heuristic method.

Hogg, Tad [HP Labs, Palo Alto, California 94304 (United States)

2003-02-01T23:59:59.000Z

10

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

SciTech Connect (OSTI)

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

11

Aluminum tunnel junction detector operation in an adiabatic demagnetization refrigerator  

SciTech Connect (OSTI)

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

Abstract adiabatic charge pumping  

E-Print Network [OSTI]

This paper is devoted to the analysis of an abstract formula describing quantum adiabatic charge pumping in a general context. We consider closed systems characterized by a slowly varying time-dependent Hamiltonian depending on an external parameter $\\alpha$. The current operator, defined as the derivative of the Hamiltonian with respect to $\\alpha$, once integrated over some time interval, gives rise to a charge pumped through the system over that time span. We determine the first two leading terms in the adiabatic parameter of this pumped charge under the usual gap hypothesis. In particular, in case the Hamiltonian is time periodic and has discrete non-degenerate spectrum, the charge pumped over a period is given to leading order by the derivative with respect to $\\alpha$ of the corresponding dynamical and geometric phases.

A. Joye; V. Brosco; F. Hekking

2010-02-05T23:59:59.000Z

13

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

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 quantum algorithms: Topics by E-print Network  

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

Adiabatic Quantum Architecture Design Minor-Embedding in Adiabatic Quantum Optimization Vicky Choi Department of Computer Science Virginia Tech Nov 18, 2009 12;Adiabatic...

16

Stirling machines: adiabatic to isothermal  

SciTech Connect (OSTI)

In most real Stirling engines the gas behavior in the cylinder is almost adiabatic, in contrast to the ideal Stirling engine in which all processes are isothermal. The combination of nearly adiabatic cylinders and nearly isothermal heat exchangers found in most Stirling engines leads to irreversibilities and loss of efficiency. Still worse, in many cases, is the performance of cylinders with a finite heat transfer intermediate between a near-adiabatic and near-isothermal behavior. Because of this behavior and because of the low thermal diffusivity of high-pressure gases, there is little hope of sufficiently enhancing the heat transfer within the cylinder of a conventional Stirling engine to increase the efficiency - in most cases, a decrease is more likely to result.

West, C.D.

1986-01-01T23:59:59.000Z

17

Employing feedback in adiabatic quantum dynamics  

E-Print Network [OSTI]

We study quantum adiabatic dynamics, where the slowly moving field is influenced by system's state (feedback). The information for the feedback is gained from non-disturbating measurements done on an ensemble of identical non-interacting systems. The situation without feedback is governed by the adiabatic theorem: adiabatic energy level populations stay constant, while the adiabatic eigenvectors get a specific phase contribution (Berry phase). However, under feedback the adiabatic theorem does not hold: the adiabatic populations satisfy a closed equation of motion that coincides with the replicator dynamics well-known by its applications in evolutionary game theory. The feedback generates a new gauge-invariant adiabatic phase, which is free of the constraints on the Berry phase (e.g., the new phase is non-zero even for real adiabatic eigenfunctions).

Armen E. Allahverdyan; Guenter Mahler

2008-04-10T23:59:59.000Z

18

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

19

Fault-tolerant, Universal Adiabatic Quantum Computation  

E-Print Network [OSTI]

Quantum computation has revolutionary potential for speeding computational tasks such as factoring and simulating quantum systems, but the task of constructing a quantum computer is daunting. Adiabatic quantum computation and other ``hands-off" approaches relieve the need for rapid, precise pulsing to control the system, inspiring at least one high-profile effort to realize a hands-off quantum computing device. But is hands-off incompatible with fault-tolerant? Concerted effort and many innovative ideas have not resolved this question but have instead deepened it, linking it to fundamental problems in quantum complexity theory. Here we present a hands-off approach that is provably (a) capable of scalable universal quantum computation in a non-degenerate ground state and (b) fault-tolerant against an analogue of the usual local stochastic fault model. A satisfying physical and numerical argument indicates that (c) it is also fault-tolerant against thermal excitation below a threshold temperature independent of the computation size.

Ari Mizel

2014-03-30T23:59:59.000Z

20

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

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

Non-adiabatic molecular dynamics simulation of ultrafast solar cell electron transfer  

E-Print Network [OSTI]

confinement devices [1­5]. Solar cells of the Graetzel type [6,7] are based on dye sensitized nanocrystalline in solar cells, photocatalysis and photoelectrolysis. The electronic structure of the dye cell; Ultrafast electron transfer; Non-adiabatic molecular dynamics simulation; Dye sensitized titanium

22

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.ltoreq.X.ltoreq.0.515) top cell semiconductor lattice matched to a GaAs bottom cell semiconductor at a low-resistance heterojunction, preferably a p+/n+ 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, Jerry M. (Lakewood, CO)

1987-01-01T23:59:59.000Z

23

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

24

Adiabatic thermal Child-Langmuir flow  

E-Print Network [OSTI]

A simulation model is presented for the verification of the recently developed steady-state one-dimensional adiabatic thermal Child-Langmuir flow theory. In this theory, a self-consistent Poisson equation is developed ...

Mok, Rachel V. (Rachel Verla)

2013-01-01T23:59:59.000Z

25

General conditions for quantum adiabatic evolution  

SciTech Connect (OSTI)

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

26

Accelerating an adiabatic process by nonlinear sweeping  

E-Print Network [OSTI]

We investigate the acceleration of an adiabatic process with the same survival probability of the ground state by sweeping a parameter nonlinearly, fast in the wide gap region and slow in the narrow gap region, as contrast to the usual linear sweeping. We find the expected acceleration in the Laudau-Zener tunneling model and in the adiabatic quantum computing model for factorizing the number N=21.

Xingxin Cao; Jun Zhuang; X. -J. Ning; Wenxian Zhang

2012-01-10T23:59:59.000Z

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 hyperspherical analysis of realistic nuclear potentials  

E-Print Network [OSTI]

Using the hyperspherical adiabatic method with the realistic nuclear potentials Argonne V14, Argonne V18, and Argonne V18 with the Urbana IX three-body potential, we calculate the adiabatic potentials and the triton bound state energies. We find that a discrete variable representation with the slow variable discretization method along the hyperradial degree of freedom results in energies consistent with the literature. However, using a Laguerre basis results in missing energy, even when extrapolated to an infinite number of basis functions and channels. We do not include the isospin $T=3/2$ contribution in our analysis.

K. M. Daily; Alejandro Kievsky; Chris H. Greene

2015-03-20T23:59:59.000Z

30

Adiabatic hyperspherical analysis of realistic nuclear potentials  

E-Print Network [OSTI]

Using the hyperspherical adiabatic method with the realistic nuclear potentials Argonne V14, Argonne V18, and Argonne V18 with the Urbana IX three-body potential, we calculate the adiabatic potentials and the triton bound state energies. We find that a discrete variable representation with the slow variable discretization method along the hyperradial degree of freedom results in energies consistent with the literature. However, using a Laguerre basis results in missing energy, even when extrapolated to an infinite number of basis functions and channels. We do not include the isospin $T=3/2$ contribution in our analysis.

Daily, K M; Greene, Chris H

2015-01-01T23:59:59.000Z

31

Scaling behavior of the adiabatic Dicke model  

SciTech Connect (OSTI)

We analyze the quantum phase transition for a set of N two-level systems interacting with a bosonic mode in the adiabatic regime. Through the Born-Oppenheimer approximation, we obtain the finite-size scaling expansion for many physical observables and, in particular, for the entanglement content of the system.

Liberti, Giuseppe; Plastina, Francesco [Dipartimento di Fisica, Universita della Calabria, 87036 Arcavacata di Rende (Serbia and Montenegro) (Italy); INFN-Gruppo collegato di Cosenza, 87036 Arcavacata di Rende (Serbia and Montenegro) (Italy); Piperno, Franco [Dipartimento di Fisica, Universita della Calabria, 87036 Arcavacata di Rende (Serbia and Montenegro) (Italy)

2006-08-15T23:59:59.000Z

32

Interconnector device  

SciTech Connect (OSTI)

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

33

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

34

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

35

On fixed-gap adiabatic quantum computation  

E-Print Network [OSTI]

Quantum computation has revolutionary potential for speeding algorithms and for simulating quantum systems such as molecules. We report here a quantum computer design that performs universal quantum computation within a single non-degenerate ground state protected from decohering noise by an energy gap that we argue is system-size-independent. Closely analogous to a traditional electric circuit, it substantially changes the requirements for quantum computer construction, easing measurement, timing, and heating problems. Using the standard adiabatic condition, we present evidence that this design permits "quantum concurrent processing" distributing a quantum computation among extra qubits to perform a quantum algorithm of N gates in an amount of time that scales with the square root of N. One consequence of our work is a fixed gap version of adiabatic quantum computation, which several arguments hinted could be impossible.

Ari Mizel

2014-01-21T23:59:59.000Z

36

ADIPLS -- the Aarhus adiabatic oscillation package  

E-Print Network [OSTI]

Development of the Aarhus adiabatic pulsation code started around 1978. Although the main features have been stable for more than a decade, development of the code is continuing, concerning numerical properties and output. The code has been provided as a generally available package and has seen substantial use at a number of installations. Further development of the package, including bringing the documentation closer to being up to date, is planned as part of the HELAS Coordination Action.

J. Christensen-Dalsgaard

2007-10-16T23:59:59.000Z

37

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

38

Scalable Superconducting Architecture for Adiabatic Quantum Computation  

E-Print Network [OSTI]

A scalable superconducting architecture for adiabatic quantum computers is proposed. The architecture is based on time-independent, nearest-neighbor interqubit couplings: it can handle any problem in the class NP even in the presence of measurement errors, noise, and decoherence. The implementation of this architecture with superconducting persistent-current qubits and the natural robustness of such an implementation to manufacturing imprecision and decoherence are discussed.

William M. Kaminsky; Seth Lloyd; Terry P. Orlando

2004-03-12T23:59:59.000Z

39

Feedback-controlled adiabatic quantum computation  

E-Print Network [OSTI]

We propose a simple feedback-control scheme for adiabatic quantum computation with superconducting flux qubits. The proposed method makes use of existing on-chip hardware to monitor the ground-state curvature, which is then used to control the computation speed to maximize the success probability. We show that this scheme can provide a polynomial speed-up in performance and that it is possible to choose a suitable set of feedback-control parameters for an arbitrary problem Hamiltonian.

R. D. Wilson; A. M. Zagoskin; S. Savel'ev; M. J. Everitt; Franco Nori

2013-01-03T23:59:59.000Z

40

Adiabatically Bound Valence Anions of Guanine. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre the EffectsAcknowledgmentdynamicsAdiabatically Bound Valence

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.


41

Matched-pair classification  

SciTech Connect (OSTI)

Following an analogous distinction in statistical hypothesis testing, we investigate variants of machine learning where the training set comes in matched pairs. We demonstrate that even conventional classifiers can exhibit improved performance when the input data has a matched-pair structure. Online algorithms, in particular, converge quicker when the data is presented in pairs. In some scenarios (such as the weak signal detection problem), matched pairs can be generated from independent samples, with the effect not only doubling the nominal size of the training set, but of providing the structure that leads to better learning. A family of 'dipole' algorithms is introduced that explicitly takes advantage of matched-pair structure in the input data and leads to further performance gains. Finally, we illustrate the application of matched-pair learning to chemical plume detection in hyperspectral imagery.

Theiler, James P [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

42

An overview of craniospinal axis fields and field matching  

SciTech Connect (OSTI)

Many methods are implemented for craniospinal axis (CSA) radiation treatment (RT). This paper’s goal is to define correctly matched CSA RT fields. Overlap or a space between matched RT fields can create variances of dose and the possibility of negative side effects or disease recurrence, respectively. An accurate CSA RT match procedure is created with localization markers, immobilization devices, equations, feathered matches, safety gap, and portal imaging. A CS match angle is predetermined to optimize patient position before immobilization device fabrication. Various central axis (CA) placements within the brain and spine fields that effect gantry, table, and collimator rotation are described. An overview of the methods used to create CSA RT fields and matches is presented for optimal CSA RT implementation. In addition, to the author’s knowledge, this is the first time that a prone CSA RT with anesthesia has been described.

Scott, Robin L., E-mail: robinscott631@gmail.com

2013-01-01T23:59:59.000Z

43

Matched Public PUF: Ultra Low Energy Security Platform  

E-Print Network [OSTI]

Matched Public PUF: Ultra Low Energy Security Platform Saro Meguerdichian and Miodrag Potkonjak that cannot be matched with any third such module. Each device enables rapid, low-energy computation of ultra and energy costs and enables a majority of security protocols to be completed in a single or a few clock

Potkonjak, Miodrag

44

Bond selective chemistry beyond the adiabatic approximation  

SciTech Connect (OSTI)

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

45

MATCH Program (North Dakota)  

Broader source: Energy.gov [DOE]

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 of BBB or better as determined by a national...

46

Packaging of solid state devices  

DOE Patents [OSTI]

A package for one or more solid state devices in a single module that allows for operation at high voltage, high current, or both high voltage and high current. Low thermal resistance between the solid state devices and an exterior of the package and matched coefficient of thermal expansion between the solid state devices and the materials used in packaging enables high power operation. The solid state devices are soldered between two layers of ceramic with metal traces that interconnect the devices and external contacts. This approach provides a simple method for assembling and encapsulating high power solid state devices.

Glidden, Steven C.; Sanders, Howard D.

2006-01-03T23:59:59.000Z

47

Abstract adiabatic charge pumping Institut Fourier, Universite de Grenoble 1  

E-Print Network [OSTI]

Abstract adiabatic charge pumping A. Joye, Institut Fourier, Universit´e de Grenoble 1 BP 74, 38402 This paper is devoted to the analysis of an abstract formula describing quantum adiabatic charge pumping with respect to , once integrated over some time interval, gives rise to a charge pumped through the system

Joye, Alain

48

Adiabatic Charge Pumping in Open Quantum Systems JOSEPH E. AVRON  

E-Print Network [OSTI]

Adiabatic Charge Pumping in Open Quantum Systems JOSEPH E. AVRON Technion ALEXANDER ELGART Courant pumps con- nected to a number of external leads. It is proven that under the rather general assumption on the Hamiltonian describing the system, in the adiabatic limit, the current through the pump is given by a formula

Avron, Joseph

49

adiabatic markovian dynamics: Topics by E-print Network  

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

adiabatic markovian dynamics First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Adiabatic Markovian...

50

Pure spin current induced by adiabatic quantum pumping in zigzag-edged graphene nanoribbons  

SciTech Connect (OSTI)

We show theoretically that pure spin current can be generated in zigzag edged graphene nanoribbons through the adiabatic pumping by edge selective pumping potentials. The origin of such pure spin current is the spin splitting of the edge localized states, which are oppositely spin polarized at opposite edges. In the proposed device, each edge of the ribbon is covered by two independent time-periodic local gate potentials with a definite phase difference, inducing the edge spin polarized current. When the pumping phase difference is opposite in sign between two edges, the total charge currents is zero and the pure edge spin current is generated.

Souma, Satofumi, E-mail: ssouma@harbor.kobe-u.ac.jp; Ogawa, Matsuto [Department of Electrical and Electronic Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501 (Japan)

2014-05-05T23:59:59.000Z

51

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

SciTech Connect (OSTI)

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

52

Quantum tunneling in the adiabatic Dicke model  

SciTech Connect (OSTI)

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

53

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

2014-12-12T23:59:59.000Z

54

Multiplicity features of adiabatic autothermal reactors  

SciTech Connect (OSTI)

In this paper singularity theory, large activation energy asymptotic, and numerical methods are used to present a comprehensive study of the steady-state multiplicity features of three classical adiabatic autothermal reactor models: tubular reactor with internal heat exchange, tubular reactor with external heat exchange, and the CSTR with external heat exchange. Specifically, the authors derive the exact uniqueness-multiplicity boundary, determine typical cross-sections of the bifurcation set, and classify the different types of bifurcation diagrams of conversion vs. residence time. Asymptotic (limiting) models are used to determine analytical expressions for the uniqueness boundary and the ignition and extinction points. The analytical results are used to present simple, explicit and accurate expressions defining the boundary of the region of autothermal operation in the physical parameter space.

Lovo, M.; Balakotaiah, V. (Houston Univ., TX (United States). Dept. of Chemical Engineering)

1992-01-01T23:59:59.000Z

55

Stirling engine with one adiabatic cylinder  

SciTech Connect (OSTI)

It is shown that integration around the P-V loop of a Stirling-like cycle with an adiabatic expansion or compression space is possible through careful application of the ideal gas laws. The result is a set of closed-form solutions for the work output, work input, and efficiency for ideal gases. Previous analyses have yielded closed-form solutions only for machines in which all spaces behave isothermally, or that have other limitations that simplify the arithmetic but omit important aspects of real machines. The results of this analysis, although still far removed from the exact behavior of real, practical engines, yield important insights into the effects observed in computer models and experimental machines. These results are especially illuminating for machines intended to operate with fairly small temperature differences. Heat pumps and low-technology solar-powered engines might be included in this category.

West, C.D.

1982-03-01T23:59:59.000Z

56

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

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

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...

57

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

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

and non-adiabatic effects Summary: applicability. The adiabatic (or Born-Oppenheimer) approach will be carried out by an algorithm that treats... , both the "on the...

58

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

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

dissipation and resonant adiabatic energy recovery. (a) CMOS logic modeled... as inverter driving a capacitive load. (b) CMOS dynamic logic equivalent. (c) Adiabatic logic...

59

E-Print Network 3.0 - adiabatic shock capturing Sample Search...  

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

of shock acceleration, adiabatic and radiative losses as well as diffusive spatial transport in various... of shock and stochastic acceleration, adiabatic and radiative losses...

60

E-Print Network 3.0 - adiabatic phase diagram Sample Search Results  

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

Summary: , France, Dec. 1998. Clocked CMOS Adiabatic Logic with Integrated Single-Phase Power-Clock Supply Dragan... , "Clocked CMOS adiabatic logic with integrated...

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

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

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

62

E-Print Network 3.0 - adiabatic self-consistent collective Sample...  

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

adiabatic surfaces and molecular dynamics... of retinal are computed by combining a semi-empirical ground-state adiabatic surface with excitation energies Source: Mukamel,...

63

Characteristic Evolution and Matching  

E-Print Network [OSTI]

I review the development of numerical evolution codes for general relativity based upon the characteristic initial value problem. Progress is traced from the early stage of 1D feasibility studies to current 3D black codes that simulate binary black holes. A prime application of characteristic evolution is Cauchy-characteristic matching, which is also reviewed.

J. Winicour

2001-02-22T23:59:59.000Z

64

Match Pumps to System Requirements  

SciTech Connect (OSTI)

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

Not Available

2005-10-01T23:59:59.000Z

65

Ultrafast stimulated Raman parallel adiabatic passage by shaped pulses  

E-Print Network [OSTI]

We present a general and versatile technique of population transfer based on {\\it parallel adiabatic passage} by femtosecond shaped pulses. Their amplitude and phase are specifically designed to optimize the adiabatic passage corresponding to parallel eigenvalues at all times. We show that this technique allows the robust adiabatic population transfer in a Raman system with the total pulse area as low as 3 $\\pi$, corresponding to a fluence of one order of magnitude below the conventional stimulated Raman adiabatic passage process. This process of short duration, typically pico- and subpicosecond, is easily implementable with the modern pulse shaper technology and opens the possibility of ultrafast robust population transfer with interesting applications in quantum information processing.

G. Dridi; S. Guerin; V. Hakobyan; H. R. Jauslin; H. Eleuch

2009-10-06T23:59:59.000Z

66

adiabatic shear localization: Topics by E-print Network  

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

13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Adiabatic optimization without local minima Quantum Physics (arXiv) Summary: Several previous works have...

67

adiabatic localized shift: Topics by E-print Network  

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

13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Adiabatic optimization without local minima Quantum Physics (arXiv) Summary: Several previous works have...

68

adiabatic fast passage: Topics by E-print Network  

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

Gu; Lin Xie; Li-Zhen Ma 2009-04-29 60 Interferometry using Adiabatic Passage in Dilute Gas Bose-Einstein Condensates Quantum Physics (arXiv) Summary: We theoretically examine...

69

Ultra-high-speed optical and electronic distributed devices  

SciTech Connect (OSTI)

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

70

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

71

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

72

Infrared cutoffs and the adiabatic limit in noncommutative spacetime  

E-Print Network [OSTI]

We discuss appropriate infrared cutoffs and their adiabatic limit for field theories on the noncommutative Minkowski space in the Yang-Feldman formalism. In order to do this, we consider a mass term as interaction term. We show that an infrared cutoff can be defined quite analogously to the commutative case and that the adiabatic limit of the two-point function exists and coincides with the expectation, to all orders.

Claus Doescher; Jochen Zahn

2005-12-02T23:59:59.000Z

73

Non-Adiabatic Fluctuation in Measured Geometric Phase  

E-Print Network [OSTI]

We study how the non-adiabatic effect causes the observable fluctuation in the "geometric phase" for a two-level system, which is defined as the experimentally measurable quantity in the adiabatic limit. From the Rabi's exact solution to this model, we give a reasonable explanation to the experimental discovery of phase fluctuation in the superconducting circuit system [P. J. Leek, \\textit{et al}., Science \\textbf{318}, 1889 (2007)], which seemed to be regarded as the conventional experimental error.

Qing Ai; Wenyi Huo; Gui Lu Long; C. P. Sun

2009-04-01T23:59:59.000Z

74

MobileMatch App  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challenge fundProject8Mistakes to Avoid Mistakes to AvoidMoMobileMatch

75

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

76

SUPERCONDUCTING DEVICES  

E-Print Network [OSTI]

communications. References Superconductor Applications: ~on all aspects of superconducting devices. IEEE Trans.on all aspects vf superconducting devices. The IBM Journal

Clarke, John

2014-01-01T23:59:59.000Z

77

SUPERCONDUCTING DEVICES  

E-Print Network [OSTI]

on all aspects of superconducting devices. IEEE Trans.on all aspects vf superconducting devices. The IBM JournalJ. Matisoo, The Superconducting Computer," Scientific

Clarke, John

2014-01-01T23:59:59.000Z

78

Super-Adiabatic Particle Number in Schwinger and de Sitter Particle Production  

E-Print Network [OSTI]

We consider the time evolution of the adiabatic particle number in both time-dependent electric fields and in de Sitter spaces, and define a super-adiabatic particle number in which the (divergent) adiabatic expansion is truncated at optimal order. In this super-adiabatic basis, the particle number evolves smoothly in time, according to Berry's universal adiabatic smoothing of the Stokes phenomenon. This super-adiabatic basis also illustrates clearly the quantum interference effects associated with particle production, in particular for sequences of time-dependent electric field pulses, and in eternal de Sitter space where there is constructive interference in even dimensions, and destructive interference in odd dimensions.

Robert Dabrowski; Gerald V. Dunne

2014-05-01T23:59:59.000Z

79

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

80

Voltage-matched, monolithic, multi-band-gap devices  

SciTech Connect (OSTI)

Monolithic, tandem, photonic cells include at least a first semiconductor layer and a second semiconductor layer, wherein each semiconductor layer includes an n-type region, a p-type region, and a given band-gap energy. Formed within each semiconductor layer is a sting of electrically connected photonic sub-cells. By carefully selecting the numbers of photonic sub-cells in the first and second layer photonic sub-cell string(s), and by carefully selecting the manner in which the sub-cells in a first and second layer photonic sub-cell string(s) are electrically connected, each of the first and second layer sub-cell strings may be made to achieve one or more substantially identical electrical characteristics.

Wanlass, Mark W.; Mascarenhas, Angelo

2006-08-22T23:59:59.000Z

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

Voltage-Matched, Monolithic, Multi-Band-Gap Devices  

DOE Patents [OSTI]

Monolithic, tandem, photonic cells include at least a first semiconductor layer and a second semiconductor layer, wherein each semiconductor layer includes an n-type region, a p-type region, and a given band-gap energy. Formed within each semiconductor layer is a string of electrically connected photonic sub-cells. By carefully selecting the numbers of photonic sub-cells in the first and second layer photonic sub-cell string(s), and by carefully selecting the manner in which the sub-cells in a first and second layer photonic sub-cell string(s) are electrically connected, each of the first and second layer sub-cell strings may be made to achieve one or more substantially identical electrical characteristics.

Wanlass, M. W.; Mascarenhas, A.

2006-08-22T23:59:59.000Z

82

Adiabatic regularisation of power spectra in $k$-inflation  

E-Print Network [OSTI]

We look at the question posed by Parker {\\it et al.} about the effect of UV regularisation on the power spectrum for inflation. Focusing on the slow-roll $k$-inflation, we show that up to second order in the Hubble and sound flow parameters, the adiabatic regularisation of such model leads to no difference in the power spectrum apart from certain cases that violate near scale invariant power spectra. Furthermore, extending to non-minimal $k$-inflation, we establish the equivalence of the subtraction terms in the adiabatic regularisation of the power spectrum in Jordan and Einstein frames.

Allan L. Alinea; Takahiro Kubota; Yukari Nakanishi; Wade Naylor

2015-03-26T23:59:59.000Z

83

Adiabatic regularisation of power spectra in $k$-inflation  

E-Print Network [OSTI]

We look at the question posed by Parker {\\it et al.} about the effect of UV regularisation on the power spectrum for inflation. Focusing on the slow-roll $k$-inflation, we show that up to second order in the Hubble and sound flow parameters, the adiabatic regularisation of such model leads to no difference in the power spectrum apart from certain cases that violate near scale invariant power spectra. Furthermore, extending to non-minimal $k$-inflation, we establish the equivalence of the subtraction terms in the adiabatic regularisation of the power spectrum in Jordan and Einstein frames.

Alinea, Allan L; Nakanishi, Yukari; Naylor, Wade

2015-01-01T23:59:59.000Z

84

Adiabatic tracking of quantum many-body dynamics  

E-Print Network [OSTI]

The nonadiabatic dynamics of a many-body system driven through a quantum critical point can be controlled using counterdiabatic driving, where the formation of excitations is suppressed by assisting the dynamics with auxiliary multiple-body nonlocal interactions. We propose an alternative scheme which circumvents practical challenges to realize shortcuts to adiabaticity in mesoscopic systems by tailoring the functional form of the auxiliary counterdiabatic interactions. A driving scheme resorting in few-body short-range interactions is shown to generate an effectively adiabatic dynamics.

Hamed Saberi; Tomáš Opatrný; Klaus Mølmer; Adolfo del Campo

2014-12-05T23:59:59.000Z

85

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

86

Realization of adiabatic Aharonov-Bohm scattering with neutrons  

E-Print Network [OSTI]

The adiabatic Aharonov-Bohm (AB) effect is a manifestation of the Berry phase acquired when some slow variables take a planar spin around a loop. While the effect has been observed in molecular spectroscopy, direct measurement of the topological phase shift in a scattering experiment has been elusive in the past. Here, we demonstrate an adiabatic AB effect for neutrons that scatter on a long straight current-carrying wire. We propose an experiment to verify the effect and demonstrate its feasibility by explicit simulation of the dynamics of unpolarized very slow neutrons that scatter on the wire under realistic conditions.

Erik Sjöqvist; Martin Almquist; Ken Mattsson; Zeynep Nilhan Gürkan; Björn Hessmo

2015-03-08T23:59:59.000Z

87

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

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

88

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

89

E-Print Network 3.0 - adiabatic absorption refrigeration Sample...  

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

;1 Introduction The magnetocaloric effect (MCE), or adiabatic temperature change (Tad), ... Source: Prosen, Toma - Department of Physics, University of Ljubljana...

90

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

91

adiabatic quantum optimization: Topics by E-print Network  

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

adiabatic quantum optimization First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Case studies in quantum...

92

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

93

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

E-Print Network [OSTI]

Analysis of non-adiabatic heat-recirculating combustors Paul D. Ronney Department of Aerospace: Ronney, P. D., "Analysis of non-adiabatic heat-recirculating combustors," Combustion and Flame, Vol. 135, pp. 421-439 (2003). #12;Analysis of non-adiabatic heat-recirculating combustors Paul D. Ronney

94

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

95

Current-matched high-efficiency, multijunction monolithic solar cells  

DOE Patents [OSTI]

The efficiency of a two-junction (cascade) tandem photovoltaic device is improved by adjusting (decreasing) the top cell thickness to achieve current matching. An example of the invention was fabricated out of Ga.sub.0.52 In.sub.0.48 P and GaAs. Additional lattice-matched systems to which the invention pertains include Al.sub.x Ga.sub.1-x /GaAS (x= 0.3-0.4), GaAs/Ge and Ga.sub.y In.sub.l-y P/Ga.sub.y+0.5 In.sub.0.5-y As (0

Olson, Jerry M. (Lakewood, CO); Kurtz, Sarah R. (Golden, CO)

1993-01-01T23:59:59.000Z

96

Sealing device  

DOE Patents [OSTI]

A sealing device for sealing a gap between a dovetail of a bucket assembly and a rotor wheel is disclosed. The sealing device includes a cover plate configured to cover the gap and a retention member protruding from the cover plate and configured to engage the dovetail. The sealing device provides a seal against the gap when the bucket assemply is subjected to a centrifugal force.

Garcia-Crespo, Andres Jose

2013-12-10T23:59:59.000Z

97

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

98

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

99

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

100

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

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

Adiabatic trapping in coupled kinetic Alfven-acoustic waves  

SciTech Connect (OSTI)

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

102

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

103

Lattice matched semiconductor growth on crystalline metallic substrates  

DOE Patents [OSTI]

Methods of fabricating a semiconductor layer or device and said devices are disclosed. The methods include but are not limited to providing a metal or metal alloy substrate having a crystalline surface with a known lattice parameter (a). The methods further include growing a crystalline semiconductor alloy layer on the crystalline substrate surface by coincident site lattice matched epitaxy. The semiconductor layer may be grown without any buffer layer between the alloy and the crystalline surface of the substrate. The semiconductor alloy may be prepared to have a lattice parameter (a') that is related to the lattice parameter (a). The semiconductor alloy may further be prepared to have a selected band gap.

Norman, Andrew G; Ptak, Aaron J; McMahon, William E

2013-11-05T23:59:59.000Z

104

Device Performance  

SciTech Connect (OSTI)

In the Device Performance group, within the National Center for Photovoltaic's Measurements and Characterization Division, we measure the performance of PV cells and modules with respect to standard reporting conditions--defined as a reference temperature (25 C), total irradiance (1000 Wm-2), and spectral irradiance distribution (IEC standard 60904-3). Typically, these are ''global'' reference conditions, but we can measure with respect to any reference set. To determine device performance, we conduct two general categories of measurements: spectral responsivity (SR) and current versus voltage (I-V). We usually perform these measurements using standard procedures, but we develop new procedures when required by new technologies. We also serve as an independent facility for verifying device performance for the entire PV community. We help the PV community solve its special measurement problems, giving advice on solar simulation, instrumentation for I-V measurements, reference cells, measurement procedures, and anomalous results. And we collaborate with researchers to analyze devices and materials.

Not Available

2006-06-01T23:59:59.000Z

105

Microchannel devices  

SciTech Connect (OSTI)

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

106

Bias-Flip Technique for Frequency Tuning of Piezo-Electric Energy Harvesting Devices  

E-Print Network [OSTI]

Devices that harvest electrical energy from mechanical vibrations have the problem that the frequency of the source vibration is often not matched to the resonant frequency of the energy harvesting device. Manufacturing ...

Zhao, Jianying

107

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

108

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

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

109

E-Print Network 3.0 - adiabatic coherent electron Sample Search...  

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

of Technology Collection: Physics 12 Adiabatic Transport of Cooper Pairs in Josephson Junction Circuits Summary: this technique for "non- invasive" measurements of coherent...

110

Cosmological Adiabatic Geometric Phase of a Scalar Field in a Bianchi Spacetime  

E-Print Network [OSTI]

A two-component formulation of the Klein-Gordon equation is used to investigate the cyclic and noncyclic adiabatic geometric phases due to spatially homogeneous (Bianchi) cosmological models. It is shown that no adiabatic geometric phases arise for Bianchi type I models. For general Bianchi type IX models the problem of the adiabatic geometric phase is shown to be equivalent to the one for nuclear quadrupole interactions of a spin. For these models nontrivial non-Abelian adiabatic geometrical phases may occur in general.

A. Mostafazadeh

2001-01-22T23:59:59.000Z

111

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

112

E-Print Network 3.0 - adiabatic processes Sample Search Results  

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

Coast, Australia Summary: Effects of Corner Geometry and Adiabatic Extensions on Heat Transfer through a Differentially Heated... numerically the effects of the corner geometry and...

113

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

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

36 5BLPCn278october-december 2010 Numericalsimulationsofthe Summary: level C; and Tad is the theoretical concrete temperature under adiabatic conditions C. Since......

114

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

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

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

115

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

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

116

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

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

dq... Size Equilibrium T Scale Height Mixing vs. Diffusion Adiabatic Lapse Rate Radiation Absorption... Structure Ionospheres Green House Effect Atmospheric Evolution...

117

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

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

118

E-Print Network 3.0 - adiabatic demagnetization Sample Search...  

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

(TCNQ>2 Summary: characteristics suggest that this material may be a useful thermometer and coolant via adiabatic demagnetization... low temperature thermometry and...

119

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

120

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

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

Mysterious dipole synchrotron oscillations during and after adiabatic capture  

SciTech Connect (OSTI)

Strong synchrotron oscillations were observed during and after the 2.5-MHz rf adiabatic capture of a debunched booster batch in the Main Injector. Analysis shows two possible sources for the synchrotron oscillations. One is the frequency drift of the 2.5-MHz rf after the turning off of the 53-MHz rf voltage, thus resulting in an energy mismatch with the debunched beam. The second source is the energy mismatch of the injected booster beam with the frequency of the 53-MHz rf. We have been able to rule out the first possibility.

Ng, K.Y.; /Fermilab

2012-03-01T23:59:59.000Z

122

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

123

Analysis of interference in attosecond transient absorption in adiabatic condition  

E-Print Network [OSTI]

We simulate the transient absorption of attosecond pulses of infrared laser-dressed atoms by considering a three-level system with the adiabatic approximation. We study the delay-dependent interference features in the transient absorption spectra of helium atoms from the perspective of the coherent interaction processes between the attosecond pulse and the quasi-harmonics, and find that many features of the interference fringes in the absorption spectra of the attosecond pulse can be attributed to the coherence phase difference. And the modulation signals of laser-induced sidebands of the dark state is found related to the dark state with population modulated by the dressing field.

Dong, Wenpu; Wang, Xiaowei; Zhao, Zengxiu

2015-01-01T23:59:59.000Z

124

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

125

Critical flow of refrigerants through adiabatic capillary tubes: Experimental study of zeotropic mixtures R-407a and R-404a  

SciTech Connect (OSTI)

This paper investigates the flow of zeotropic mixtures of refrigerants through adiabatic capillary tubes. First, an extensive literature review related to the experimental study of these expansion devices was carried out. The results of this literature search showed a lack of experimental data for two fluids, R-407c and R-404a, in spite of the important role that these fluids now play as substitutes for R-22 and R-502 and the practical use of adiabatic capillary tubes in refrigeration systems. Extensive experimental data are presented for five different geometric configurations covering two inner diameters, 1.06 mm and 1.85 mm (0.0417 in. and 0.0728 in.), and three lengths, 1.05 m, 1.30 m, and 1.60 m (41.33 in., 51.18 in., and 62.99 in.). The flow rate covers a range of 10 kg/h to 112 kg/h (22 lb/h to 246.4 lb/h). The operating conditions were 220 psig to 280 psig (1,618 kPa to 2,031 kPa) of condensing pressure and 5 C to 30 C (9 F to 54 F) of subcooling. These results are presented in both graphical and tabulated forms and are intended to be a contribution to the development of environmentally benign refrigeration systems.

Motta, S.Y.; Braga, S.L.; Parise, J.A.R.

2000-07-01T23:59:59.000Z

126

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

127

Breakup of three particles within the adiabatic expansion method  

E-Print Network [OSTI]

General expressions for the breakup cross sections in the lab frame for $1+2$ reactions are given in terms of the hyperspherical adiabatic basis. The three-body wave function is expanded in this basis and the corresponding hyperradial functions are obtained by solving a set of second order differential equations. The ${\\cal S}$-matrix is computed by using two recently derived integral relations. Even though the method is shown to be well suited to describe $1+2$ processes, there are nevertheless particular configurations in the breakup channel (for example those in which two particles move away close to each other in a relative zero-energy state) that need a huge number of basis states. This pathology manifests itself in the extremely slow convergence of the breakup amplitude in terms of the hyperspherical harmonic basis used to construct the adiabatic channels. To overcome this difficulty the breakup amplitude is extracted from an integral relation as well. For the sake of illustration, we consider neutron-deuteron scattering. The results are compared to the available benchmark calculations.

E. Garrido; A. Kievsky; M. Viviani

2014-07-21T23:59:59.000Z

128

University Reactor Matching Grants Program  

SciTech Connect (OSTI)

During the 2002 Fiscal year, funds from the DOE matching grant program, along with matching funds from the industrial sponsors, have been used to support research in the area of thermal-hydraulics. Both experimental and numerical research projects have been performed. Experimental research focused on two areas: (1) Identification of the root cause mechanism for axial offset anomaly in pressurized water reactors under prototypical reactor conditions, and (2) Fluid dynamic aspects of thin liquid film protection schemes for inertial fusion reactor chambers. Numerical research focused on two areas: (1) Multi-fluid modeling of both two-phase and two-component flows for steam conditioning and mist cooling applications, and (2) Modeling of bounded Rayleigh-Taylor instability with interfacial mass transfer and fluid injection through a porous wall simulating the ''wetted wall'' protection scheme in inertial fusion reactor chambers. Details of activities in these areas are given.

John Valentine; Farzad Rahnema; Said Abdel-Khalik

2003-02-14T23:59:59.000Z

129

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, J.E.

1981-02-27T23:59:59.000Z

130

Electrochemical device  

DOE Patents [OSTI]

A tunnel protected electrochemical device features channels fluidically communicating between manifold, tunnels and cells. The channels are designed to provide the most efficient use of auxiliary power. The channels have a greater hydraulic pressure drop and electrical resistance than the manifold. This will provide a design with the optimum auxiliary energy requirements.

Grimes, Patrick G. (Westfield, NJ); Einstein, Harry (Springfield, NJ); Bellows, Richard J. (Westfield, NJ)

1988-01-12T23:59:59.000Z

131

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

132

Adiabatic approximation, Gell-Mann and Low theorem and degeneracies: A pedagogical example  

E-Print Network [OSTI]

Adiabatic approximation, Gell-Mann and Low theorem and degeneracies: A pedagogical example if the evolution operator has no limit for adiabatic switchings, the Gell-Mann and Low formula allows to follow approximation (obtained by two different limiting procedures) is either useless or wrong, and the Gell

Paris-Sud XI, Université de

133

Simple proof of equivalence between adiabatic quantum computation and the circuit model  

E-Print Network [OSTI]

We prove the equivalence between adiabatic quantum computation and quantum computation in the circuit model. An explicit adiabatic computation procedure is given that generates a ground state from which the answer can be extracted. The amount of time needed is evaluated by computing the gap. We show that the procedure is computationally efficient.

Ari Mizel; Daniel A. Lidar; Morgan Mitchell

2007-02-26T23:59:59.000Z

134

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

SciTech Connect (OSTI)

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

135

Theory of coupled whistler-electron temperature gradient mode in high beta plasma: Application to linear plasma device  

SciTech Connect (OSTI)

This paper presents a theory of coupled whistler (W) and electron temperature gradient (ETG) mode using two-fluid model in high beta plasma. Non-adiabatic ion response, parallel magnetic field perturbation ({delta}B{sub z}), perpendicular magnetic flutter ({delta}B{sub perpendicular}), and electron collisions are included in the treatment of theory. A linear dispersion relation for whistler-electron temperature gradient (W-ETG) mode is derived. The numerical results obtained from this relation are compared with the experimental results observed in large volume plasma device (LVPD) [Awasthi et al., Phys. Plasma 17, 42109 (2010)]. The theory predicts that the instability grows only where the temperature gradient is finite and the density gradient flat. For the parameters of the experiment, theoretically estimated frequency and wave number of W-ETG mode match with the values corresponding to the peak in the power spectrum observed in LVPD. By using simple mixing length argument, estimated level of fluctuations of W-ETG mode is in the range of fluctuation level observed in LVPD.

Singh, S. K.; Awasthi, L. M.; Singh, R.; Kaw, P. K.; Jha, R.; Mattoo, S. K. [Institute for Plasma Research, Bhat, Gandhinagar 382 428 (India)

2011-10-15T23:59:59.000Z

136

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

137

Fast Adaptive Silhouette Area based Template Matching  

E-Print Network [OSTI]

Fast Adaptive Silhouette Area based Template Matching Daniel Mohr and Gabriel Zachmann If (Technical Informatics and Computer Systems) Prof. Dr. Gabriel Zachmann (Computer Graphics) Prof. Dr Template Matching Daniel Mohr and Gabriel Zachmann Clausthal University of Technology, Department

Zachmann, Gabriel

138

Stability of sunspots to convective motions. I. Adiabatic instability  

SciTech Connect (OSTI)

For determining the adiabatic stability of a uniform vertical field in an arbitrary stratification it is sufficient to consider the limit of infinitesimal horizontal wavelength. It is shown how the behavior of the instability can be estimated qualitatively from the dependence of the equipartition field strength on depth. Modes are calculated numerically for analytic stratification models and for a detailed sunspot stratification, including the effects of partial ionization. It is concluded that for the observed field strengths of umbrae the stratification is indeed unstable, with a growth time of about 18 minutes. The unstable eigenfunctions have a maximum at about 2300 km below the surface of the umbra and are about 3900 km deep. Deeper layers may also be unstable depending on unknown details of the stratification. A connection between fluting instability and convective instability is noted. 37 refs.

Moreno-Insertis, F.; Spruit, H.C. (Instituto de Astrofisica de Canarias, La Laguna (Spain); Max-Planck-Institut fuer Physik und Astrophysik, Garching (Germany, F.R.))

1989-07-01T23:59:59.000Z

139

Non-adiabatic perturbations in decaying vacuum cosmology  

SciTech Connect (OSTI)

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

140

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

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

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

142

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

143

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

144

Matching network for RF plasma source  

DOE Patents [OSTI]

A compact matching network couples an RF power supply to an RF antenna in a plasma generator. The simple and compact impedance matching network matches the plasma load to the impedance of a coaxial transmission line and the output impedance of an RF amplifier at radio frequencies. The matching network is formed of a resonantly tuned circuit formed of a variable capacitor and an inductor in a series resonance configuration, and a ferrite core transformer coupled to the resonantly tuned circuit. This matching network is compact enough to fit in existing compact focused ion beam systems.

Pickard, Daniel S. (Palo Alto, CA); Leung, Ka-Ngo (Hercules, CA)

2007-11-20T23:59:59.000Z

145

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

146

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

147

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

148

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

149

Stochasticity, superadiabaticity, and the theory of adiabatic invariants and guiding center motion  

SciTech Connect (OSTI)

The theory of adiabatic invariants is discussed within the modern framework of symplectic Hamiltonian dynamics. The distinctions between exact, adiabatic, and superadiabatic invariants are clarified. The intimate connection between adiabatic (as opposed to exact) invariance and resonant interactions between motions on disparate time scales is elucidated. For the important case of charged particle motion in a strong magnetic field, resonances between gyration, bounce motion, and an external sinusoidal perturbation are described explicitly by introducing a time-dependent symplectic formulation of the guiding center motion. Destruction of invariance is discussed for quite general situations of physical interest, including the case of a trapped particle in a tokamak.

Dubin, D.H.E.; Krommes, J.A.

1981-07-01T23:59:59.000Z

150

Scalable Architecture for Adiabatic Quantum Computing of NP-Hard Problems  

E-Print Network [OSTI]

We present a comprehensive review of past research into adiabatic quantum computation and then propose a scalable architecture for an adiabatic quantum computer that can treat NP-hard problems without requiring local coherent operations. Instead, computation can be performed entirely by adiabatically varying a magnetic field applied to all the qubits simultaneously. Local (incoherent) operations are needed only for: (1) switching on or off certain pairwise, nearest-neighbor inductive couplings in order to set the problem to be solved and (2) measuring some subset of the qubits in order to obtain the answer to the problem.

William M. Kaminsky; Seth Lloyd

2002-11-23T23:59:59.000Z

151

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

152

An anatomy of a quantum adiabatic algorithm that transcends the Turing computability  

E-Print Network [OSTI]

We give an update on a quantum adiabatic algorithm for the Turing noncomputable Hilbert's tenth problem, and briefly go over some relevant issues and misleading objections to the algorithm.

Tien D. Kieu

2004-07-13T23:59:59.000Z

153

E-Print Network 3.0 - adiabatic major radius Sample Search Results  

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

ATOMIC, MOLECULAR AND OPTICAL PHYSICS Summary: molecules are investigated. The Born-Oppenheimer adiabatic representation of the two-body dynamics provides... at r r0 R0D. 3....

154

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

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

155

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

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

156

Transient method of characteristics via the Adiabatic, Theta, and Multigrid Amplitude Function methods  

E-Print Network [OSTI]

In this thesis, we investigated the Adiabatic, Theta, and Multigrid Amplitude Function (MAF) methods for solving the Method of Characteristics (MOC) formulation of the time-dependent neutron transport equation. The transient ...

Shaner, Samuel Christopher

2014-01-01T23:59:59.000Z

157

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

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

Combustion Theory and Modelling Vol. 11, No. 3, June 2007, 427453 Summary: mixture, and Tad T + Y q CP is the adiabatic flame temperature of planar flame. By further......

158

adiabatic pressure-gradient soliton: Topics by E-print Network  

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

tissues. To make Riba Sagarra, Jaume 9 Formation of solitons in atomic Bose-Einstein condensates by dark-state adiabatic passage Condensed Matter (arXiv) Summary: We propose a new...

159

Simulation of adiabatic thermal beams in a periodic solenoidal magnetic focusing field  

E-Print Network [OSTI]

Self-consistent particle-in-cell simulations are performed to verify earlier theoretical predictions of adiabatic thermal beams in a periodic solenoidal magnetic focusing field [ K.?R. Samokhvalova, J. Zhou and C. Chen ...

Barton, T. J.

160

Entanglement of a qubit coupled to a resonator in the adiabatic regime  

SciTech Connect (OSTI)

We discuss the ground state entanglement of a bi-partite system, composed by a qubit strongly interacting with an oscillator mode, as a function of the coupling strength, the transition frequency and the level asymmetry of the qubit. This is done in the adiabatic regime in which the time evolution of the qubit is much faster than the oscillator one. Within the adiabatic approximation, we obtain a complete characterization of the ground state properties of the system and of its entanglement content.

Liberti, Giuseppe; Piperno, Franco [Dipartimento di Fisica, Universita della Calabria, 87036 Arcavacata di Rende (Serbia and Montenegro) (Italy); Zaffino, Rosa Letizia; Plastina, Francesco [Dipartimento di Fisica, Universita della Calabria, 87036 Arcavacata di Rende (Serbia and Montenegro) (Italy); INFN-Gruppo collegato di Cosenza, 87036 Arcavacata di Rende (Serbia and Montenegro) (Italy)

2006-03-15T23:59:59.000Z

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.


161

Laser device  

DOE Patents [OSTI]

A laser device includes a target position, an optical component separated a distance J from the target position, and a laser energy source separated a distance H from the optical component, distance H being greater than distance J. A laser source manipulation mechanism exhibits a mechanical resolution of positioning the laser source. The mechanical resolution is less than a spatial resolution of laser energy at the target position as directed through the optical component. A vertical and a lateral index that intersect at an origin can be defined for the optical component. The manipulation mechanism can auto align laser aim through the origin during laser source motion. The laser source manipulation mechanism can include a mechanical index. The mechanical index can include a pivot point for laser source lateral motion and a reference point for laser source vertical motion. The target position can be located within an adverse environment including at least one of a high magnetic field, a vacuum system, a high pressure system, and a hazardous zone. The laser source and an electro-mechanical part of the manipulation mechanism can be located outside the adverse environment. The manipulation mechanism can include a Peaucellier linkage.

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

2007-07-10T23:59:59.000Z

162

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

163

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

164

Color Matching for PlasticsColor Matching for Plastics Bill CheethamBill Cheetham  

E-Print Network [OSTI]

1 Color Matching for PlasticsColor Matching for Plastics Bill CheethamBill Cheetham GeneralIndustrial Systems Information ServicesInformation Services Medical SystemsMedical Systems PlasticsPlastics Power Electric Global Research Applications ­ GE Plastics · FormTool - lab color matching tool · Color

Watson, Ian

165

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

SciTech Connect (OSTI)

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

166

Medical Device Reliability BIOMATERIALS  

E-Print Network [OSTI]

NEMI Medical Electronics team to address short- and long-term reliability issues with medical devices. OurMedical Device Reliability BIOMATERIALS Our goal is to provide medical device manufacturers, and consistency of active implantable medical devices. These devices, including pacemakers, cardiac defibrillators

167

Connector device for building integrated photovoltaic device  

SciTech Connect (OSTI)

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

168

Operated device estimation framework  

E-Print Network [OSTI]

Protective device estimation is a challenging task because there are numerous protective devices present in a typical distribution system. Among various protective devices, auto-reclosers and fuses are the main overcurrent protection on distribution...

Rengarajan, Janarthanan

2009-05-15T23:59:59.000Z

169

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

170

Interpolation Approach to Hamiltonian-varying Quantum Systems and the Adiabatic Theorem  

E-Print Network [OSTI]

Quantum control could be implemented by varying the system Hamiltonian. According to adiabatic theorem, a slowly changing Hamiltonian can approximately keep the system at the ground state during the evolution if the initial state is a ground state. In this paper we consider this process as an interpolation between the initial and final Hamiltonians. We use the mean value of a single operator to measure the distance between the final state and the ideal ground state. This measure could be taken as the error of adiabatic approximation. We prove under certain conditions, this error can be precisely estimated for an arbitrarily given interpolating function. This error estimation could be used as guideline to induce adiabatic evolution. According to our calculation, the adiabatic approximation error is not proportional to the average speed of the variation of the system Hamiltonian and the inverse of the energy gaps in many cases. In particular, we apply this analysis to an example on which the applicability of the adiabatic theorem is questionable.

Yu Pan; Zibo Miao; Nina H. Amini; Valery Ugrinovskii; Matthew R. James

2015-03-11T23:59:59.000Z

171

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

SciTech Connect (OSTI)

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

172

Process And Apparatus To Accomplish Autothermal Or Steam Reforming Via A Reciprocating Compression Device  

DOE Patents [OSTI]

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, K. David (Morgantown, WV); James, Robert (Fairmont, WV); Berry, David A. (Mt. Morris, PA); Gardner, Todd (Morgantown, WV)

2004-09-21T23:59:59.000Z

173

Santa Claus Meets Hypergraph Matchings Arash Asadpour  

E-Print Network [OSTI]

Santa Claus Meets Hypergraph Matchings Arash Asadpour , Uriel Feige , and Amin Saberi June 17, 2008 94305, USA. saberi@stanford.edu 1 #12;extensively in computer science, operations research, economics

174

Phase-matched generation of coherent soft and hard X-rays using IR lasers  

DOE Patents [OSTI]

Phase-matched high-order harmonic generation of soft and hard X-rays is accomplished using infrared driving lasers in a high-pressure non-linear medium. The pressure of the non-linear medium is increased to multi-atmospheres and a mid-IR (or higher) laser device provides the driving pulse. Based on this scaling, also a general method for global optimization of the flux of phase-matched high-order harmonic generation at a desired wavelength is designed.

Popmintchev, Tenio V.; Chen, Ming-Chang; Bahabad, Alon; Murnane, Margaret M.; Kapteyn, Henry C.

2013-06-11T23:59:59.000Z

175

Adiabatic approximation, Gell-Mann and Low theorem and degeneracies: A pedagogical example  

E-Print Network [OSTI]

We study a simple system described by a 2x2 Hamiltonian and the evolution of the quantum states under the influence of a perturbation. More precisely, when the initial Hamiltonian is not degenerate,we check analytically the validity of the adiabatic approximation and verify that, even if the evolution operator has no limit for adiabatic switchings, the Gell-Mann and Low formula allows to follow the evolution of eigenstates. In the degenerate case, for generic initial eigenstates, the adiabatic approximation (obtained by two different limiting procedures) is either useless or wrong, and the Gell-Mann and Low formula does not hold. We show how to select initial states in order to avoid such failures.

Christian Brouder; Gabriel Stoltz; Gianluca Panati

2008-07-26T23:59:59.000Z

176

Non-Hermitian heat engine with all-quantum-adiabatic-process cycle  

E-Print Network [OSTI]

A non-Hermitian system is expected to describe an open system which exchanges energy and particles with external reservoirs. Correspondingly, such an exchange can be adiabatic in the context of quantum mechanics. We investigate a non-Hermitian quantum heat engine (QHE) by a concrete simple two-level system, which is an S = 1/2 spin in a complex external magnetic field. The non- Hermitian PT -symmetric Hamiltonian, as a self-contained one, describes both working medium and reservoirs. A heat-engine cycle is composed of completely quantum adiabatic processes. The heat efficiency is obtained to be the same as that of Hermitian quantum Carnot cycle. The power output of this scheme can be arbitrary high, because the corresponding quantum adiabatic passages do not require a long time scale. A classical analogue of this scheme is also presented.

S. Lin; Z. Song

2015-04-10T23:59:59.000Z

177

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.

178

Slowly changing potential problems in Quantum Mechanics: Adiabatic Theorems, Ergodic Theorems, and Scattering  

E-Print Network [OSTI]

We employ the recently developed multi-time scale averaging method to study the large time behavior of slowly changing (in time) Hamiltonians. We treat some known cases in a new way, such as the Zener problem, and we give another proof of the Adiabatic Theorem in the gapless case. We prove a new Uniform Ergodic Theorem for slowly changing unitary operators. This theorem is then used to derive the adiabatic theorem, do the scattering theory for such Hamiltonians, and prove some classical propagation estimates and Asymptotic Completeness.

Shmuel Fishman; Avy Soffer

2015-01-06T23:59:59.000Z

179

Ultimate field-free molecular alignment by combined adiabatic-impulsive field design  

E-Print Network [OSTI]

We show that a laser pulse designed as an adiabatic ramp followed by a kick allows one to reach a perfect postpulse molecular alignment, free of saturation. The mechanism is based on an optimized distribution of the energy between a weakly efficient but non saturating adiabatic ramp and an efficient but saturating impulsive field. Unprecedent degrees of alignment are predicted using state-of-the-art pulse shaping techniques and non-destructive field intensities. The scheme can be extended to reach high degrees of orientation of polar molecules using designed half-cycle pulses.

S. Guerin; A. Rouzee; E. Hertz

2008-03-05T23:59:59.000Z

180

Controlled Flow of Spin-Entangled Electrons via Adiabatic Quantum Pumping  

E-Print Network [OSTI]

We propose a method to dynamically generate and control the flow of spin-entangled electrons, each belonging to a spin-singlet, by means of adiabatic quantum pumping. The pumping cycle functions by periodic time variation of localized two-body interactions. We develop a generalized approach to adiabatic quantum pumping as traditional methods based on scattering matrix in one dimension cannot be applied here. We specifically compute the flow of spin-entangled electrons within a Hubbard-like model of quantum dots, and discuss possible implementations and identify parameters that can be used to control the singlet flow.

Kunal K. Das; Sungjun Kim; Ari Mizel

2005-06-21T23:59:59.000Z

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

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

182

Two-photon adiabatic passage in ultracold Rb interacting with a single nanosecond, chirped pulse  

E-Print Network [OSTI]

A semiclassical, four-level model of a nanosecond, chirped pulse interacting with all optically accessible hyperfine states in the ultracold Rb atom is analyzed aiming at population inversion within $5S_{1/2}$ electronic state. The nature of two-photon adiabatic passage performed by such a single pulse having a bandwidth smaller than the hyperfine splitting of $5S_{1/2}$ state is investigated in the framework of the dressed state picture. It is shown that two dressed states are involved in the adiabatic dynamics of population inversion. The excited state manifold appeared to play an important mediating role in the mechanism of population transfer.

Liu, Gengyuan

2015-01-01T23:59:59.000Z

183

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

184

Microwave-stimulated Raman adiabatic passage in a Bose-Einstein condensate on an atom chip  

E-Print Network [OSTI]

We report the achievement of stimulated Raman adiabatic passage (STIRAP) in the microwave frequency range between internal states of a Bose-Einstein condensate (BEC) magnetically trapped in the vicinity of an atom chip. The STIRAP protocol used in this experiment is robust to external perturbations as it is an adiabatic transfer, and power-efficient as it involves only resonant (or quasi-resonant) processes. Taking into account the effect of losses and collisions in a non-linear Bloch equations model, we show that the maximum transfer efficiency is obtained for non-zero values of the one- and two-photon detunings, which is confirmed quantitatively by our experimental measurements.

Dupont-Nivet, Matthieu; Laudat, Théo; Westbrook, Christoph I; Schwartz, Sylvain

2015-01-01T23:59:59.000Z

185

Multi-junction solar cell device  

DOE Patents [OSTI]

A multi-junction solar cell device (10) is provided. The multi-junction solar cell device (10) comprises either two or three active solar cells connected in series in a monolithic structure. The multi-junction device (10) comprises a bottom active cell (20) having a single-crystal silicon substrate base and an emitter layer (23). The multi-junction device (10) further comprises one or two subsequent active cells each having a base layer (32) and an emitter layer (23) with interconnecting tunnel junctions between each active cell. At least one layer that forms each of the top and middle active cells is composed of a single-crystal III-V semiconductor alloy that is substantially lattice-matched to the silicon substrate (22). The polarity of the active p-n junction cells is either p-on-n or n-on-p. The present invention further includes a method for substantially lattice matching single-crystal III-V semiconductor layers with the silicon substrate (22) by including boron and/or nitrogen in the chemical structure of these layers.

Friedman, Daniel J. (Lakewood, CO); Geisz, John F. (Wheat Ridge, CO)

2007-12-18T23:59:59.000Z

186

THE JOURNAL OF CHEMICAL PHYSICS 135, 094304 (2011) "Adiabatic-hindered-rotor" treatment of the parahydrogen-water complex  

E-Print Network [OSTI]

THE JOURNAL OF CHEMICAL PHYSICS 135, 094304 (2011) "Adiabatic-hindered-rotor" treatment of the parahydrogen-water complex Tao Zeng,1 Hui Li,2 Robert J. Le Roy,1 and Pierre-Nicholas Roy1,a) 1 Department 1 September 2011) Inspired by a recent successful adiabatic-hindered-rotor treatment

Le Roy, Robert J.

187

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

188

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

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

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

189

Adiabatic Heavy Ion Fusion Potentials for Fusion at Deep Sub-barrier Energies  

E-Print Network [OSTI]

The fusion cross sections from well above barrier to extreme sub-barrier energies have been analysed using the energy (E) and angular momentum (L) dependent barrier penetration model ({\\small{ELDBPM}}). From this analysis, the adiabatic limits of fusion barriers have been determined for a wide range of heavy ion systems. The empirical prescription of Wilzynska and Wilzynski has been used with modified radius parameter and surface tension coefficient values consistent with the parameterization of the nuclear masses. The adiabatic fusion barriers calculated from this prescription are in good agreement with the adiabatic barriers deduced from {\\small{ELDBPM}} fits to fusion data. The nuclear potential diffuseness is larger at adiabatic limit, resulting in a lower $\\hbar\\omega$ leading to increase of "logarithmic slope" observed at energies well below the barrier. The effective fusion barrier radius and curvature values are anomalously smaller than the predictions of known empirical prescriptions. A detailed comparison of the systematics of fusion barrier with and without L-dependence has been presented.

S. V. S. Sastry; S. Kailas; A. K. Mohanty; A. Saxena

2003-11-12T23:59:59.000Z

190

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.

191

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

192

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

193

Reversible ratchets as Brownian particles in an adiabatically changing periodic potential Juan M. R. Parrondo  

E-Print Network [OSTI]

Reversible ratchets as Brownian particles in an adiabatically changing periodic potential Juan M. R of particles is induced without any energy consumption. These cycles can be called reversible ratchets called ratch- ets, since they are somehow inspired by the discussion in Ref. 16 of a ratchet working

Parrondo, Juan M.R.

194

Quantum pumping in closed systems, adiabatic transport, and the Kubo formula Doron Cohen  

E-Print Network [OSTI]

Quantum pumping in closed systems, adiabatic transport, and the Kubo formula Doron Cohen Department received 30 June 2003; published 3 October 2003 Quantum pumping in closed systems is considered. We explain that the Kubo formula contains all the physically relevant ingredients for the calculation of the pumped charge

Cohen, Doron

195

On the vertical structure of adiabatic wave forcing for the ocean circulation  

E-Print Network [OSTI]

: wave-current coupling, radiation stresses, MARS3D, WAVEWATCH III Three-dimensional oceanic flows canOn the vertical structure of adiabatic wave forcing for the ocean circulation Part I: Theory submitted to Ocean Modelling October 5, 2010 hal-00523388,version2-5Oct2010 #12;can be developed. Keywords

196

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

197

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

198

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

199

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

200

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

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

Adiabatic expansion, early x-ray data and the central engine in GRBs  

E-Print Network [OSTI]

The Swift satellite early x-ray data shows a very steep decay in most of the Gamma-Ray Bursts light curves. This decay is either produced by the rapidly declining continuation of the central engine activity or by some left-over radiation starting right after the central engine shuts off. The latter scenario consists of the emission from an "ember" that cools via adiabatic expansion and, if the jet angle is larger than the inverse of the source Lorentz factor, the large angle emission. In this work, we calculate the temporal and spectral properties of the emission from such a cooling ember, providing a new treatment for the micro-physics of the adiabatic expansion. We use the adiabatic invariance of p_{\\perp}^2/B (p_{\\perp} is the component of the electrons' momentum normal to the magnetic field, B) to calculate the electrons' Lorentz factor during the adiabatic expansion; the electron momentum becomes more and more aligned with the local magnetic field as the expansion develops. We compare the theoretical expectations of the adiabatic expansion (and the large angle emission) with the current observations of the early x-ray data and find that only about 20% of our sample of 107 bursts is potentially consistent with this model. This leads us to believe that, for most bursts, the central engine does not turn off completely during the steep decay of the x-ray light curve; therefore, this phase is produced by the continued rapidly declining activity of the central engine.

R. Barniol Duran; P. Kumar

2009-03-02T23:59:59.000Z

202

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

203

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

204

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

205

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

206

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

207

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

208

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

209

Matched asymptotic expansions in financial engineering  

E-Print Network [OSTI]

Matched asymptotic expansions in financial engineering Sam Howison OCIAM and Nomura Centre of the approach in `plain vanilla' option valuation, in valuation using a fast mean-reverting-stochastic expansions applied directly to stochastic processes of diffusion type is also proposed. Keywords: option

Howison, Sam

210

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

211

An Exponential Separation between the Matching Principle and  

E-Print Network [OSTI]

principle is the perfect matching principle, NPM n , which states that no graph on 2n + 1 nodes consists of a perfect matching. We encode NPM n using \\Gamma 2n+1 2 \\Delta matching variables, P fi;jg , i; j Ÿ 2n+ 1. Using these variables, NPM n can be written as the disjunction of the following matching clauses: V f

Beame, Paul

212

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

213

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

214

Amorphous silicon photovoltaic devices  

DOE Patents [OSTI]

This invention is a photovoltaic device comprising an intrinsic or i-layer of amorphous silicon and where the photovoltaic device is more efficient at converting light energy to electric energy at high operating temperatures than at low operating temperatures. The photovoltaic devices of this invention are suitable for use in high temperature operating environments.

Carlson, David E.; Lin, Guang H.; Ganguly, Gautam

2004-08-31T23:59:59.000Z

215

INFORMATION DEVICES AND  

E-Print Network [OSTI]

to access or hold sensitive, confidential or personal information on mobile devices, such as laptopsPROTECTION OF INFORMATION HELD ON MOBILE DEVICES AND ENCRYPTION POLICY (V3.5) the place of useful;Protection of Information Held on Mobile Devices and Encryption Policy (v3.5) Page 1 Table of Contents 1

Mottram, Nigel

216

Portable data collection device  

DOE Patents [OSTI]

The present invention provides a portable data collection device that has a variety of sensors that are interchangeable with a variety of input ports in the device. The various sensors include a data identification feature that provides information to the device regarding the type of physical data produced by each sensor and therefore the type of sensor itself. The data identification feature enables the device to locate the input port where the sensor is connected and self adjust when a sensor is removed or replaced. The device is able to collect physical data, whether or not a function of a time.

French, Patrick D. (Aurora, CO)

1996-01-01T23:59:59.000Z

217

Unitary lens semiconductor device  

DOE Patents [OSTI]

A unitary lens semiconductor device and method. The unitary lens semiconductor device is provided with at least one semiconductor layer having a composition varying in the growth direction for unitarily forming one or more lenses in the semiconductor layer. Unitary lens semiconductor devices may be formed as light-processing devices such as microlenses, and as light-active devices such as light-emitting diodes, photodetectors, resonant-cavity light-emitting diodes, vertical-cavity surface-emitting lasers, and resonant cavity photodetectors.

Lear, Kevin L. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

218

Portable data collection device  

DOE Patents [OSTI]

The present invention provides a portable data collection device that has a variety of sensors that are interchangeable with a variety of input ports in the device. The various sensors include a data identification feature that provides information to the device regarding the type of physical data produced by each sensor and therefore the type of sensor itself. The data identification feature enables the device to locate the input port where the sensor is connected and self adjust when a sensor is removed or replaced. The device is able to collect physical data, whether or not a function of a time. 7 figs.

French, P.D.

1996-06-11T23:59:59.000Z

219

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

220

Improved substrate structures for InP-based devices  

SciTech Connect (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 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

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

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

SciTech Connect (OSTI)

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

222

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

223

Fermion-dimer scattering using an impurity lattice Monte Carlo approach and the adiabatic projection method  

E-Print Network [OSTI]

We present lattice Monte Carlo calculations of fermion-dimer scattering in the limit of zero-range interactions using the adiabatic projection method. The adiabatic projection method uses a set of initial cluster states and Euclidean time projection to give a systematically improvable description of the low-lying scattering cluster states in a finite volume. We use L\\"uscher's finite-volume relations to determine the s-wave, p-wave, and d-wave phase shifts. For comparison, we also compute exact lattice results using Lanczos iteration and continuum results using the Skorniakov-Ter-Martirosian equation. For our Monte Carlo calculations we use a new lattice algorithm called impurity lattice Monte Carlo. This algorithm can be viewed as a hybrid technique which incorporates elements of both worldline and auxiliary-field Monte Carlo simulations.

Serdar Elhatisari; Dean Lee

2014-12-01T23:59:59.000Z

224

Quantum state engineering with flux-biased Josephson phase qubits by rapid adiabatic passages  

SciTech Connect (OSTI)

In this article, the scheme of quantum computing based on the Stark-chirped rapid adiabatic passage (SCRAP) technique [L. F. Wei, J. R. Johansson, L. X. Cen, S. Ashhab, and F. Nori, Phys. Rev. Lett. 100, 113601 (2008)] is extensively applied to implement quantum state manipulations in flux-biased Josephson phase qubits. The broken-parity symmetries of bound states in flux-biased Josephson junctions are utilized to conveniently generate the desirable Stark shifts. Then, assisted by various transition pulses, universal quantum logic gates as well as arbitrary quantum state preparations can be implemented. Compared with the usual {pi}-pulse operations widely used in experiments, the adiabatic population passages proposed here are insensitive to the details of the applied pulses and thus the desirable population transfers can be satisfyingly implemented. The experimental feasibility of the proposal is also discussed.

Nie, W.; Huang, J. S.; Shi, X.; Wei, L. F. [Quantum Optelectronics Laboratory, School of Physics and Technology, Southwest Jiaotong University, Chengdu 610031 (China)

2010-09-15T23:59:59.000Z

225

Adiabatic Isometric Mapping Algorithm for Embedding 2-Surfaces in Euclidean 3-Space  

E-Print Network [OSTI]

Alexandrov proved that any simplicial complex homeomorphic to a sphere with strictly non-negative Gaussian curvature at each vertex can be isometrically embedded uniquely in $\\mathbb{R}^3$ as a convex polyhedron. Due to the nonconstructive nature of his proof, there have yet to be any algorithms, that we know of, that realizes the Alexandrov embedding in polynomial time. Following his proof, we developed the adiabatic isometric mapping (AIM) algorithm. AIM uses a guided adiabatic pull-back procedure to produce "smooth" embeddings. Tests of AIM applied to two different polyhedral metrics suggests that its run time is sub cubic with respect to the number of vertices. Although Alexandrov's theorem specifically addresses the embedding of convex polyhedral metrics, we tested AIM on a broader class of polyhedral metrics that included regions of negative Gaussian curvature. One test was on a surface just outside the ergosphere of a Kerr black hole.

Ray, Shannon; Alsing, Paul M; Yau, Shing-Tung

2015-01-01T23:59:59.000Z

226

Universal adiabatic quantum computation via the space-time circuit-to-Hamiltonian construction  

E-Print Network [OSTI]

We show how to perform universal adiabatic quantum computation using a Hamiltonian which describes a set of particles with local interactions on a two-dimensional grid. A single parameter in the Hamiltonian is adiabatically changed as a function of time to simulate the quantum circuit. We bound the eigenvalue gap above the unique groundstate by mapping our model onto the ferromagnetic XXZ chain with kink boundary conditions; the gap of this spin chain was computed exactly by Koma and Nachtergaele using its $q$-deformed version of SU(2) symmetry. We also discuss a related time-independent Hamiltonian which was shown by Janzing to be capable of universal computation. We observe that in the limit of large system size, the time evolution is equivalent to the exactly solvable quantum walk on Young's lattice.

David Gosset; Barbara M. Terhal; Anna Vershynina

2014-09-27T23:59:59.000Z

227

Generating catalogs of transverse matching solutions  

SciTech Connect (OSTI)

Programs such as TRANSPORT or TRACE can find transverse beam matching solutions one at a time when given appropriate starting conditions. In the present work, an algorithm is described which rapidly finds a catalog of approximate transverse beam matching solutions. For a given initial beam, the algorithm finds the gradients of four quadrupole magnets such as to get four Twiss parameters (alpha and beta for horizontal and vertical planes) which are close to a set of desired values at the exit of a constant-energy beam line with no horizontal-vertical cross coupling and no space charge. The beam line may contain bending elements with edge corrections and other elements for which the r matrixes are known. The algorithm transforms the entrance and exit beam specifications to waist specifications, and uses the properties of waist-to-waist transport to reduce the problem from a four dimensional search to a two dimensional search. At the Los Alamos Meson Physics Facility (LAMPF) accelerator, transverse matching is important in the low-energy transport lines (0.75 MeV), where beams from the H/sup +/, H/sup /minus//, and polarized H/sup /minus// sources must be tailored for injection into the drift-tube linac; and in the transition region (100 MeV), where the beam from the drift-tube linac is injected into the side-coupled linac. Space charge has significant effects in the low-energy transport, but it is still valuable to get no-space-charge matching solutions as a starting point for solutions with space charge. 2 refs.

Swain, G.; Busch, P.; Burns, M.

1989-01-01T23:59:59.000Z

228

Matched Index of Refraction Flow Facility  

SciTech Connect (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

2010-01-01T23:59:59.000Z

229

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

230

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

Nemat-Nasser, Sia

231

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

232

Adiabatic charge pumping in open quantum systems J.E. Avron(a)  

E-Print Network [OSTI]

Adiabatic charge pumping in open quantum systems J.E. Avron(a) , A. Elgart(b) , G.M. Graf(c) , L for charge transport in quantum pumps connected to a number of external leads. It is proved that under rather the pump is given by a formula of B¨uttiker, Pr^etre, and Thomas, relating it to the frozen S

233

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

234

Novel adiabatic bifilar helical wiggler entrance for free-electron laser applications  

SciTech Connect (OSTI)

A new adabatic bifilar helical wiggler entrance is presented. This introduction region is obtained by using a liquid shunt resistance to progressively shunt the current circulating in the wiggler helical windings. We have built a prototype wiggler and measured the field profiles obtained with this new scheme. The results agree very well with computer calculations and show that, indeed, one obtains a high quality adiabatic wiggler with this method.

Hartemann, F.; Buzzi, J.M.; Lamain, H.

1988-08-22T23:59:59.000Z

235

A non-equilibrium model for fixed-bed multi-component adiabatic adsorption  

E-Print Network [OSTI]

to enter the bed. Solutions along a z ~ constant char- acteristic are the history of the. volumn element of the bed located a s constant, This physical interpretat1on is a physical approximation of the real world where adsorber discontinuities... 1 3. 3. 2 3e3e3 3. 3. 4 3. 3. 5 Solution of the multi-component adiabatic adsorption equation, . ~ ~ ~ Fluid phase equations. Fixed-bed solid phase equations. , ~ Construction of the solution surface by stepwise integra- tion...

Harwell, Jeffrey Harry

1979-01-01T23:59:59.000Z

236

Convergence and adiabatic elimination for a driven dissipative quantum harmonic oscillator  

E-Print Network [OSTI]

We prove that a harmonic oscillator driven by Lindblad dynamics where the typical drive and loss channels are two-photon processes instead of single-photon ones, converges to a protected subspace spanned by two coherent states of opposite amplitude. We then characterize the slow dynamics induced by a perturbative single-photon loss on this protected subspace, by performing adiabatic elimination in the Lindbladian dynamics.

Rémi Azouit; Alain Sarlette; Pierre Rouchon

2015-03-21T23:59:59.000Z

237

Adiabatic rapid passage two-photon excitation of a Rydberg atom  

E-Print Network [OSTI]

We considered the two-photon adiabatic rapid passage excitation of a single atom from the ground to a Rydberg state. Three schemes were analyzed: both pump and Stokes fields chirped and pulsed, only the pump field is chirped, and only the pump field is pulsed and chirped while the Stokes field is continuous wave (CW). In all three cases high transfer efficiencies $>99\\%$ were achieved for the experimentally realizable Rabi frequencies and the pulse durations of the fields.

Kuznetsova, Elena; Malinovskaya, Svetlana A

2015-01-01T23:59:59.000Z

238

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

SciTech Connect (OSTI)

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

239

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

240

Theory of adiabatic quantum control in the presence of cavity-photon shot noise  

E-Print Network [OSTI]

Many areas of physics rely upon adiabatic state transfer protocols, allowing a quantum state to be moved between different physical systems for storage and retrieval or state manipulation. However, these state-transfer protocols suffer from dephasing and dissipation. In this thesis we go beyond the standard open-systems treatment of quantum dissipation allowing us to consider non-Markovian environments. We use adiabatic perturbation theory in order to give analytic descriptions for various quantum state-transfer protocols. The leading-order corrections will give rise to additional terms adding to the geometric phase preventing us from achieving a perfect fidelity. We obtain analytical descriptions for the effects of the geometric phase in non-Markovian regimes. The Markovian regime is usually treated by solving a standard Bloch-Redfield master equation, while in the non-Markovian regime, we perform a secular approximation allowing us to obtain a solution to the density matrix without solving master equations. This solution contains all the relevant phase information for our state-transfer protocol. After developing the general theoretical tools, we apply our methods to adiabatic state transfer between a four-level atom in a driven cavity. We explicitly consider dephasing effects due to unavoidable photon shot noise and give a protocol for performing a phase gate. These results will be useful to ongoing experiments in circuit quantum electrodynamics (QED) systems.

Christopher Chamberland

2014-07-28T23:59:59.000Z

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

Complete adiabatic waveform templates for a test-mass in the Schwarzschild spacetime: VIRGO and Advanced LIGO studies  

E-Print Network [OSTI]

Post-Newtonian expansions of the binding energy and gravitational wave flux truncated at the {\\it same relative} post-Newtonian order form the basis of the {\\it standard adiabatic} approximation to the phasing of gravitational waves from inspiralling compact binaries. Viewed in terms of the dynamics of the binary, the standard approximation is equivalent to neglecting certain conservative post-Newtonian terms in the acceleration. In an earlier work, we had proposed a new {\\it complete adiabatic} approximant constructed from the energy and flux functions. At the leading order it employs the 2PN energy function rather than the 0PN one in the standard approximation, so that, effectively the approximation corresponds to the dynamics where there are no missing post-Newtonian terms in the acceleration. In this paper, we compare the overlaps of the standard and complete adiabatic templates with the exact waveform in the adiabatic approximation of a test-mass motion in the Schwarzschild spacetime, for the VIRGO and the Advanced LIGO noise spectra. It is found that the complete adiabatic approximants lead to a remarkable improvement in the {\\it effectualness} at lower PN ($<$ 3PN) orders, while standard approximants of order $\\geq$ 3PN provide a good lower-bound to the complete approximants for the construction of effectual templates. {\\it Faithfulness} of complete approximants is better than that of standard approximants except for a few post-Newtonian orders. Standard and complete approximants beyond the adiabatic approximation are also studied using the Lagrangian templates of Buonanno, Chen and Vallisneri.

P. Ajith; Bala R. Iyer; C. A. K. Robinson; B. S. Sathyaprakash

2005-06-10T23:59:59.000Z

242

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

243

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

244

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

245

Matching univalent functions and conformal welding  

E-Print Network [OSTI]

Given a conformal mapping $f$ of the unit disk $\\mathbb D$ onto a simply connected domain $D$ in the complex plane bounded by a closed Jordan curve, we consider the problem of constructing a matching conformal mapping, i.e., the mapping of the exterior of the unit disk $\\mathbb D^*$ onto the exterior domain $D^*$ regarding to $D$. The answer is expressed in terms of a linear differential equation with a driving term given as the kernel of an operator dependent on the original mapping $f$. Examples are provided. This study is related to the problem of conformal welding and to representation of the Virasoro algebra in the space of univalent functions.

Grong, Erlend; Vasil'ev, Alexander

2008-01-01T23:59:59.000Z

246

Matching univalent functions and conformal welding  

E-Print Network [OSTI]

Given a conformal mapping $f$ of the unit disk $\\mathbb D$ onto a simply connected domain $D$ in the complex plane bounded by a closed Jordan curve, we consider the problem of constructing a matching conformal mapping, i.e., the mapping of the exterior of the unit disk $\\mathbb D^*$ onto the exterior domain $D^*$ regarding to $D$. The answer is expressed in terms of a linear differential equation with a driving term given as the kernel of an operator dependent on the original mapping $f$. Examples are provided. This study is related to the problem of conformal welding and to representation of the Virasoro algebra in the space of univalent functions.

Erlend Grong; Pavel Gumenyuk; Alexander Vasil'ev

2008-06-05T23:59:59.000Z

247

Matching Gifts Fund | ornl.gov  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challenge fund LasDubey selected asMaratMarySingle Particle422 Matching

248

Grey man devices  

E-Print Network [OSTI]

The Vision Slaved to Walking Device i s one in a series of devices that are a result of the experimental ambulation series. The ability to see only when one's feet are moving allows for a distorted perspective of ones own ...

Sethi, Sanjit (Sanjit Singh), 1971-

2002-01-01T23:59:59.000Z

249

Capillary interconnect device  

DOE Patents [OSTI]

An interconnecting device for connecting a plurality of first fluid-bearing conduits to a corresponding plurality of second fluid-bearing conduits thereby providing fluid communication between the first fluid-bearing conduits and the second fluid-bearing conduits. The device includes a manifold and one or two ferrule plates that are held by compressive axial forces.

Renzi, Ronald F

2013-11-19T23:59:59.000Z

250

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

251

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

252

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.

253

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

254

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 (Berkeley, 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)

2008-04-08T23:59:59.000Z

255

Device for cutting protrusions  

DOE Patents [OSTI]

An apparatus for clipping a protrusion of material is provided. The protrusion may, for example, be a bolt head, a nut, a rivet, a weld bead, or a temporary assembly alignment tab protruding from a substrate surface of assembled components. The apparatus typically includes a cleaver having a cleaving edge and a cutting blade having a cutting edge. Generally, a mounting structure configured to confine the cleaver and the cutting blade and permit a range of relative movement between the cleaving edge and the cutting edge is provided. Also typically included is a power device coupled to the cutting blade. The power device is configured to move the cutting edge toward the cleaving edge. In some embodiments the power device is activated by a momentary switch. A retraction device is also generally provided, where the retraction device is configured to move the cutting edge away from the cleaving edge.

Bzorgi, Fariborz M. (Knoxville, TN)

2011-07-05T23:59:59.000Z

256

Roadmap to Residency: From Application to the Match and Beyond  

E-Print Network [OSTI]

Roadmap to Residency: From Application to the Match and Beyond Association of American Medical Colleges Learn Serve Lead #12;Roadmap to Residency: From Application to the Match and Beyond #12;© 2006 with application to U.S. residency programs. iii Roadmap to Residency: From Application to the Match and Beyond

Sherman, S. Murray

257

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

258

Matching of asymptotic expansions for the wave propagation in media  

E-Print Network [OSTI]

Matching of asymptotic expansions for the wave propagation in media with thin slot S-SAM Matching of asymptotic expansions for the wave propagation in media with thin slot ­ p.1/29 inria-00528072 The wavelength The width of the slot ¡ Matching of asymptotic expansions for the wave propagation in media

Paris-Sud XI, Université de

259

Background field method and nonrelativistic QED matching  

E-Print Network [OSTI]

We discuss the resolution of an inconsistency between lattice background field methods and nonrelativistic QED matching conditions. In particular, we show that lack of on-shell conditions in lattice QCD with time-dependent background fields generally requires that certain operators related by equations of motion should be retained in an effective field theory to correctly describe the behavior of Green's functions. The coefficients of such operators in a nonrelativistic hadronic theory are determined by performing a robust nonrelativistic expansion of QED for relativistic scalar and spin-half hadrons including nonminimal electromagnetic couplings. Provided that nonrelativistic QED is augmented with equation-of-motion operators, we find that the background field method can be reconciled with the nonrelativistic QED matching conditions without any inconsistency. We further investigate whether nonrelativistic QED can be employed in the analysis of lattice QCD correlation function in background fields, but we are confronted with difficulties. Instead, we argue that the most desirable approach is a hybrid one which relies on a relativistic hadronic theory with operators chosen based on their relevance in the nonrelativistic limit. Using this hybrid framework, we obtain practically useful forms of correlation functions for scalar and spin-half hadrons in uniform electric and magnetic fields.

Jong-Wan Lee; Brian C. Tiburzi

2014-11-15T23:59:59.000Z

260

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

SciTech Connect (OSTI)

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

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

Rain sampling device  

DOE Patents [OSTI]

The present invention constitutes a rain sampling device adapted for independent operation at locations remote from the user which allows rainfall to be sampled in accordance with any schedule desired by the user. The rain sampling device includes a mechanism for directing wet precipitation into a chamber, a chamber for temporarily holding the precipitation during the process of collection, a valve mechanism for controllably releasing samples of the precipitation from the chamber, a means for distributing the samples released from the holding chamber into vessels adapted for permanently retaining these samples, and an electrical mechanism for regulating the operation of the device. 11 figures.

Nelson, D.A.; Tomich, S.D.; Glover, D.W.; Allen, E.V.; Hales, J.M.; Dana, M.T.

1991-05-14T23:59:59.000Z

262

Rain sampling device  

DOE Patents [OSTI]

The present invention constitutes a rain sampling device adapted for independent operation at locations remote from the user which allows rainfall to be sampled in accordance with any schedule desired by the user. The rain sampling device includes a mechanism for directing wet precipitation into a chamber, a chamber for temporarily holding the precipitation during the process of collection, a valve mechanism for controllably releasing samples of said precipitation from said chamber, a means for distributing the samples released from the holding chamber into vessels adapted for permanently retaining these samples, and an electrical mechanism for regulating the operation of the device.

Nelson, Danny A. (Richland, WA); Tomich, Stanley D. (Richland, WA); Glover, Donald W. (Prosser, WA); Allen, Errol V. (Benton City, WA); Hales, Jeremy M. (Kennewick, WA); Dana, Marshall T. (Richland, WA)

1991-01-01T23:59:59.000Z

263

A wedged-peak-pulse design with medium fuel adiabat for indirect-drive fusion  

SciTech Connect (OSTI)

In the present letter, we propose the design of a wedged-peak pulse at the late stage of indirect drive. Our simulations of one- and two-dimensional radiation hydrodynamics show that the wedged-peak-pulse design can raise the drive pressure and capsule implosion velocity without significantly raising the fuel adiabat. It can thus balance the energy requirement and hydrodynamic instability control at both ablator/fuel interface and hot-spot/fuel interface. This investigation has implication in the fusion ignition at current mega-joule laser facilities.

Fan, Zhengfeng; Ren, Guoli; Liu, Bin; Wu, Junfeng [Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); He, X. T.; Liu, Jie; Wang, L. F.; Ye, Wenhua [Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); Center for Applied Physics and Technology, Peking University, Beijing 100871 (China)

2014-10-15T23:59:59.000Z

264

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

265

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

266

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

267

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

268

Thermally matched fluid cooled power converter  

DOE Patents [OSTI]

A thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. Power electronic circuits are thermally matched, such as between component layers and between the circuits and the support. The support may form a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

Radosevich, Lawrence D.; Kannenberg, Daniel G.; Kaishian, Steven C.; Beihoff, Bruce C.

2005-06-21T23:59:59.000Z

269

The APM/Matched-Filter Cluster Catalog  

E-Print Network [OSTI]

A catalog of nearby clusters in the 5800 deg$^2$ area in the southern Galactic cap is constructed by applying a matched-filter cluster-finding algorithm to the sample of 3.3 million galaxies from the APM Galaxy Survey. I have preliminarily detected more than 4000 cluster candidates with estimated redshift of less than 0.2 and with richness similar to those of ACO clusters. Generally, a good correspondence is found between the nearest cluster candidates in our catalog and the ACO clusters which have measured redshift. While the ACO catalog becomes incomplete at z>0.08, the completeness limit of our cluster catalog reaches z=0.15.

Wataru Kawasaki

1999-12-15T23:59:59.000Z

270

A Simple shower and matching algorithm  

SciTech Connect (OSTI)

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

271

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

272

Electronic security device  

DOE Patents [OSTI]

The present invention relates to a security device having a control box containing an electronic system and a communications loop over which the system transmits a signal. The device is constructed so that the communications loop can extend from the control box across the boundary of a portal such as a door into a sealed enclosure into which access is restricted whereby the loop must be damaged or moved in order for an entry to be made into the enclosure. The device is adapted for detecting unauthorized entries into such enclosures such as rooms or containers and for recording the time at which such entries occur for later reference. Additionally, the device detects attempts to tamper or interfere with the operation of the device itself and records the time at which such events take place. In the preferred embodiment, the security device includes a microprocessor-based electronic system and a detection module capable of registering changes in the voltage and phase of the signal transmitted over the loop. 11 figs.

Eschbach, E.A.; LeBlanc, E.J.; Griffin, J.W.

1992-03-17T23:59:59.000Z

273

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

274

Semiclassical (SC) Description of Electronically Non-AdiabaticDynamics via the Initial Value Representation (IVR)  

SciTech Connect (OSTI)

The initial value representation (IVR) of semiclassical (SC) theory is used in conjunction with the Meyer-Miller/Stock-Thoss description of electronic degrees of freedom in order to treat electronically non-adiabatic processes. It is emphasized that the classical equations of motion for the nuclear and electronic degrees of freedom that emerge in this description are precisely the Ehrenfest equations of motion (the force on the nuclei is the force averaged over the electronic wavefunction), but that the trajectories given by these equations of motion do not have the usual shortcomings of the traditional Ehrenfest model when they are used within the SC-IVR framework. For example, in the traditional Ehrenfest model (a mixed quantum-classical approach) the nuclear motion emerges from a non-adiabatic encounter on an average potential energy surface (a weighted average according to the population in the various electronic states), while the SC-IVR describes the correct correlation between electronic and nuclear dynamics, i.e., the nuclear motion is on one potential energy surface or the other depending on the electronic state. Calculations using forward-backward versions of SC-IVR theory (FB-IVR) are presented to illustrate this behavior. An even more approximate version of the SC-IVR, the linearized approximation (LSC-IVR), is slightly better than the traditional Ehrenfest model, but since it cannot describe quantum coherence effects, the LSC-IVR is also not able to describe the correct correlation between nuclear and electronic dynamics.

Ananth, V.; Venkataraman, C.; Miller, W.H.

2007-06-22T23:59:59.000Z

275

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

SciTech Connect (OSTI)

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

276

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

277

Design and fabrication of 6.1-.ANG. family semiconductor devices using semi-insulating A1Sb substrate  

DOE Patents [OSTI]

For the first time, an aluminum antimonide (AlSb) single crystal substrate is utilized to lattice-match to overlying semiconductor layers. The AlSb substrate establishes a new design and fabrication approach to construct high-speed, low-power electronic devices while establishing inter-device isolation. Such lattice matching between the substrate and overlying semiconductor layers minimizes the formation of defects, such as threaded dislocations, which can decrease the production yield and operational life-time of 6.1-.ANG. family heterostructure devices.

Sherohman, John W. (Livermore, CA); Coombs, III, Arthur W. (Patterson, CA); Yee, Jick Hong (Livermore, CA); Wu, Kuang Jen J. (Cupertino, CA)

2007-05-29T23:59:59.000Z

278

Electrical apparatus lockout device  

SciTech Connect (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, R.

1999-10-12T23:59:59.000Z

279

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

280

Spectral tailoring device  

DOE Patents [OSTI]

A spectral tailoring device for altering the neutron energy spectra and flux of neutrons in a fast reactor thereby selectively to enhance or inhibit the transmutation rate of a target metrical to form a product isotope. Neutron moderators, neutron filters, neutron absorbers and neutron reflectors may be used as spectral tailoring devices. Depending on the intended use for the device, a member from each of these four classes of materials could be used singularly, or in combination, to provide a preferred neutron energy spectra and flux of the neutrons in the region of the target material. In one embodiment of the invention, an assembly is provided for enhancing the production of isotopes, such as cobalt 60 and gadolinium 153. In another embodiment of the invention, a spectral tailoring device is disposed adjacent a target material which comprises long lived or volatile fission products and the device is used to shift the neutron energy spectra and flux of neutrons in the region of the fission products to preferentially transmute them to produce a less volatile fission product inventory. 6 figs.

Brager, H.R.; Schenter, R.E.; Carter, L.L.; Karnesky, R.A.

1987-08-05T23:59:59.000Z

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

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

282

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

283

Pendulum detector testing device  

DOE Patents [OSTI]

A detector testing device which provides consistent, cost-effective, repeatable results. The testing device is primarily constructed of PVC plastic and other non-metallic materials. Sensitivity of a walk-through detector system can be checked by: 1) providing a standard test object simulating the mass, size and material content of a weapon or other contraband, 2) suspending the test object in successive positions, such as head, waist and ankle levels, simulating where the contraband might be concealed on a person walking through the detector system; and 3) swinging the suspended object through each of the positions, while operating the detector system and observing its response. The test object is retained in a holder in which the orientation of the test device or target can be readily changed, to properly complete the testing requirements.

Gonsalves, John M. (Modesto, CA)

1997-01-01T23:59:59.000Z

284

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

285

Pendulum detector testing device  

DOE Patents [OSTI]

A detector testing device is described which provides consistent, cost-effective, repeatable results. The testing device is primarily constructed of PVC plastic and other non-metallic materials. Sensitivity of a walk-through detector system can be checked by: (1) providing a standard test object simulating the mass, size and material content of a weapon or other contraband, (2) suspending the test object in successive positions, such as head, waist and ankle levels, simulating where the contraband might be concealed on a person walking through the detector system; and (3) swinging the suspended object through each of the positions, while operating the detector system and observing its response. The test object is retained in a holder in which the orientation of the test device or target can be readily changed, to properly complete the testing requirements. 5 figs.

Gonsalves, J.M.

1997-09-30T23:59:59.000Z

286

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

287

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

288

Regenerative combustion device  

DOE Patents [OSTI]

A regenerative combustion device having a combustion zone, and chemicals contained within the combustion zone, such as water, having a first equilibrium state, and a second combustible state. Means for transforming the chemicals from the first equilibrium state to the second combustible state, such as electrodes, are disposed within the chemicals. An igniter, such as a spark plug or similar device, is disposed within the combustion zone for igniting combustion of the chemicals in the second combustible state. The combustion products are contained within the combustion zone, and the chemicals are selected such that the combustion products naturally chemically revert into the chemicals in the first equilibrium state following combustion. The combustion device may thus be repeatedly reused, requiring only a brief wait after each ignition to allow the regeneration of combustible gasses within the head space.

West, Phillip B.

2004-03-16T23:59:59.000Z

289

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

290

A quantitative method for measuring the quality of history matches  

SciTech Connect (OSTI)

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

291

Achromatic phase matching at third 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 and stationary optical elements whose configuration, properties, and arrangement have been optimized to match the angular dispersion characteristics of the SHG crystal to at least the third order. These elements include prisms and diffraction gratings 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 third order and such that every ray wavelength overlap within the crystal.

Richman, Bruce

2003-10-21T23:59:59.000Z

292

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

293

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

294

Solar Innovator | Alta Devices  

ScienceCinema (OSTI)

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

2013-05-29T23:59:59.000Z

295

Device Oriented Project Controller  

SciTech Connect (OSTI)

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

296

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

297

An "adiabatic-hindered-rotor" treatment allows para-H2 to be treated as if it were spherical  

E-Print Network [OSTI]

An "adiabatic-hindered-rotor" treatment allows para-H2 to be treated as if it were spherical Hui Li­ molecule interactions, the common assumption that para-H2 may be treated as a spherical particle is often K , it is often considered a good approximation to treat para-H2 as a spherical particle.1

Le Roy, Robert J.

298

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.

299

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

E-Print Network [OSTI]

1 Numerical Modeling of Non-adiabatic Heat-Recirculating Combustors C. H. Kuo and P. D. Ronney@usc.edu Colloquium topic area: 12. New Technology Concepts Keywords: Micro-combustion, Heat-recirculating combustors, Extinction limits Shortened running title: Numerical Modeling of Heat-Recirculating Combustors Word count

300

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

SciTech Connect (OSTI)

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

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

The exact forces on classical nuclei in non-adiabatic charge transfer  

E-Print Network [OSTI]

The decomposition of electronic and nuclear motion presented in~[A. Abedi, N. T. Maitra, and E. K. U. Gross, Phys. Rev. Lett. 105, 123002 (2010)] yields a time-dependent potential that drives the nuclear motion and fully accounts for the coupling to the electronic subsystem. Here we show that propagation of an ensemble of independent classical nuclear trajectories on this exact potential yields dynamics that are essentially indistinguishable from the exact quantum dynamics for a model non-adiabatic charge transfer problem. We point out the importance of step and bump features in the exact potential that are critical in obtaining the correct splitting of the quasiclassical nuclear wave packet in space after it passes through an avoided crossing between two Born-Oppenheimer surfaces, and analyze their structure. Lastly, an analysis of the exact potentials in the context of trajectory surface hopping procedure is presented, including preliminary investigations of velocity-adjustment, and the force-induced decoherence effect.

Federica Agostini; Ali Abedi; Yasumitsu Suzuki; Seung Kyu Min; Neepa T. Maitra; E. K. U. Gross

2015-01-31T23:59:59.000Z

302

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

SciTech Connect (OSTI)

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

303

Radiative hydrodynamics in the highly super adiabatic layer of stellar evolution models  

E-Print Network [OSTI]

We present results of three dimensional simulations of the uppermost part of the sun, at 3 stages of its evolution. Each model includes physically realistic radiative-hydrodynamics (the Eddington approximation is used in the optically thin region), varying opacities and a realistic equation of state (full treatment of the ionization of H and He). In each evolution model, we investigate a domain, which starts at the top of the photosphere and ends just inside the convection zone (about 2400 km in the sun model). This includes all of the super-adiabatic layer (SAL). Due to the different positions of the three models in the $log (g) $ vs $log T_{eff}$ plane, the more evolved models have lower density atmospheres. The reduction in density causes the amount of overshoot into the radiation layer, to be greater in the more evolved models.

F. J. Robinson; P. Demarque; S. Sofia; K. L. Chan; Y. -C. Kim; D. B. Guenther

2000-11-02T23:59:59.000Z

304

Extension of thickness-dependent dielectric breakdown law on adiabatically compressed ferroelectric materials  

SciTech Connect (OSTI)

It is experimentally found that the E{sub b}(d) = {gamma} {center_dot} d{sup -{xi}} law describing the thickness-dependent breakdown electric field for solid dielectrics at ambient conditions can be extended for dielectrics in other thermodynamic states. It follows from the experimental results reported herein that the breakdown field, E{sub b}(d), of Pb(Zr{sub 0.95}Ti{sub 0.05})O{sub 3} (PZT 95/5) and Pb(Zr{sub 0.52}Ti{sub 0.48})O{sub 3} (PZT 52/48) ferroelectrics subjected to explosive adiabatic compression obeys the above-mentioned law in a wide range of voltages, up to 150 kV.

Shkuratov, Sergey I. [Loki Incorporated, Rolla, Missouri 65409 (United States)] [Loki Incorporated, Rolla, Missouri 65409 (United States); Baird, Jason [Loki Incorporated, Rolla, Missouri 65409 (United States) [Loki Incorporated, Rolla, Missouri 65409 (United States); Department of Mining and Nuclear Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409-0450 (United States); Talantsev, Evgueni F. [Pulsed Power LLC, Lubbock, Texas 79416 (United States)] [Pulsed Power LLC, Lubbock, Texas 79416 (United States)

2013-02-04T23:59:59.000Z

305

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

306

Progresses in the Studies of Adiabatic Splitting of Charged Particles Beams by Crossing Nonlinear Resonances  

E-Print Network [OSTI]

The multi-turn extraction from a circular particle accelerator is performed by trapping the beam inside stable islands of the horizontal phase space. In general, by crossing a resonance of order n, n+1 beamlets are created whenever the resonance is stable, whereas if the resonance is unstable the beam is split in n parts. Islands are generated by non-linear magnetic fields, whereas the trapping is realized by means of a given tune variation so to cross adiabatically a resonance. Experiments at the CERN Proton Synchrotron carried out in 2007 gave the evidence of protons trapped in stable islands while crossing the one-third and one-fifth resonances. Dedicated experiments were also carried out to study the trapping process and its reversibility properties. The results of these measurement campaigns are presented and discussed in this paper.

Franchi, A; Giovannozzi, M

2009-01-01T23:59:59.000Z

307

A maximum-entropy approach to the adiabatic freezing of a supercooled liquid  

E-Print Network [OSTI]

I employ the van der Waals theory of Baus and coworkers to analyze the fast, adiabatic decay of a supercooled liquid in a closed vessel with which the solidification process usually starts. By imposing a further constraint on either the system volume or pressure, I use the maximum-entropy method to quantify the fraction of liquid that is transformed into solid as a function of undercooling and of the amount of a foreign gas that could possibly be also present in the test tube. Upon looking at the implications of thermal and mechanical insulation for the energy cost of forming a solid droplet within the liquid, I identify one situation where the onset of solidification inevitably occurs near the wall in contact with the bath.

Santi Prestipino

2013-04-29T23:59:59.000Z

308

Substrate structures for InP-based devices  

SciTech Connect (OSTI)

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

309

Roadmap to Residency: From Application to the Match and Beyond  

E-Print Network [OSTI]

Roadmap to Residency: From Application to the Match and Beyond Association of American Medical Colleges Learn Serve Lead Second Edition #12;Roadmap to Residency: From Application to the Match and Beyond in the processes associated with application to U.S. residency programs. iii Roadmap to Residency: From Application

Weber, David J.

310

University of Michigan Medical School 2010 Residency Match Results  

E-Print Network [OSTI]

University of Michigan Medical School 2010 Residency Match Results Name Institution SpecialtyGaw/NMH/VA-IL Surgery-Preliminary Northwestern University Feinberg School Urological Surgery Michyla Bowerson Michigan-VT Pediatrics #12;University of Michigan Medical School 2010 Residency Match Results Name Institution Specialty

Shyy, Wei

311

DUK - A Fast and Efficient Kmer Based Sequence Matching Tool  

SciTech Connect (OSTI)

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

312

Matching of asymptotic expansions for the wave propagation in media  

E-Print Network [OSTI]

Matching of asymptotic expansions for the wave propagation in media with thin slot S-SAM Matching of asymptotic expansions for the wave propagation in media with thin slot ­ p.1/38 inria-00528070 of asymptotic expansions for the wave propagation in media with thin slot ­ p.2/38 inria-00528070,version1-21Oct

Paris-Sud XI, Université de

313

Non- contacting capacitive diagnostic device  

DOE Patents [OSTI]

A non-contacting capacitive diagnostic device includes a pulsed light source for producing an electric field in a semiconductor or photovoltaic device or material to be evaluated and a circuit responsive to the electric field. The circuit is not in physical contact with the device or material being evaluated and produces an electrical signal characteristic of the electric field produced in the device or material. The diagnostic device permits quality control and evaluation of semiconductor or photovoltaic device properties in continuous manufacturing processes.

Ellison, Timothy

2005-07-12T23:59:59.000Z

314

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

315

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

316

Nuclear reactor safety device  

DOE Patents [OSTI]

A safety device is disclosed for use in a nuclear reactor for axially repositioning a control rod with respect to the reactor core in the event of an upward thermal excursion. Such safety device comprises a laminated helical ribbon configured as a tube-like helical coil having contiguous helical turns with slidably abutting edges. The helical coil is disclosed as a portion of a drive member connected axially to the control rod. The laminated ribbon is formed of outer and inner laminae. The material of the outer lamina has a greater thermal coefficient of expansion than the material of the inner lamina. In the event of an upward thermal excursion, the laminated helical coil curls inwardly to a smaller diameter. Such inward curling causes the total length of the helical coil to increase by a substantial increment, so that the control rod is axially repositioned by a corresponding amount to reduce the power output of the reactor.

Hutter, Ernest (Wilmette, IL)

1986-01-01T23:59:59.000Z

317

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

318

Regenerative braking device  

DOE Patents [OSTI]

Disclosed are several embodiments of a regenerative braking device for an automotive vehicle. The device includes a plurality of rubber rollers (24, 26) mounted for rotation between an input shaft (14) connectable to the vehicle drivetrain and an output shaft (16) which is drivingly connected to the input shaft by a variable ratio transmission (20). When the transmission ratio is such that the input shaft rotates faster than the output shaft, the rubber rollers are torsionally stressed to accumulate energy, thereby slowing the vehicle. When the transmission ratio is such that the output shaft rotates faster than the input shaft, the rubber rollers are torsionally relaxed to deliver accumulated energy, thereby accelerating or driving the vehicle.

Hoppie, Lyle O. (Birmingham, MI)

1982-01-12T23:59:59.000Z

319

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

320

Microelectromechanical safe arm device  

DOE Patents [OSTI]

Microelectromechanical (MEM) apparatus and methods for operating, for preventing unintentional detonation of energetic components comprising pyrotechnic and explosive materials, such as air bag deployment systems, munitions and pyrotechnics. The MEM apparatus comprises an interrupting member that can be moved to block (interrupt) or complete (uninterrupt) an explosive train that is part of an energetic component. One or more latching members are provided that engage and prevent the movement of the interrupting member, until the one or more latching members are disengaged from the interrupting member. The MEM apparatus can be utilized as a safe and arm device (SAD) and electronic safe and arm device (ESAD) in preventing unintentional detonations. Methods for operating the MEM apparatus include independently applying drive signals to the actuators coupled to the latching members, and an actuator coupled to the interrupting member.

Roesler, Alexander W. (Tijeras, NM)

2012-06-05T23:59:59.000Z

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.


321

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

322

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

323

Biomolecular detection device  

DOE Patents [OSTI]

A device for detecting and measuring the concentration of biomolecules in solution, utilizing a conducting electrode in contact with a solution containing target biomolecules, with a film with controllable pore size distribution characteristics applied to at least one surface of the conducting electrode. The film is functionalized with probe molecules that chemically interact with the target biomolecules at the film surface, blocking indicator molecules present in solution from diffusing from the solution to the electrode, thereby changing the electrochemical response of the electrode.

Huo, Qisheng (Albuquerque, NM); Liu, Jun (Albuquerque, NM)

2008-10-21T23:59:59.000Z

324

Hybrid electroluminescent devices  

DOE Patents [OSTI]

A hybrid electroluminescent (EL) device comprises at least one inorganic diode element and at least one organic EL element that are electrically connected in series. The absolute value of the breakdown voltage of the inorganic diode element is greater than the absolute value of the maximum reverse bias voltage across the series. The inorganic diode element can be a power diode, a Schottky barrier diode, or a light-emitting diode.

Shiang, Joseph John (Niskayuna, NY); Duggal, Anil Raj (Niskayuna, NY); Michael, Joseph Darryl (Schenectady, NY)

2010-08-03T23:59:59.000Z

325

Managing the Storage and Battery Resources in an Image Capture Device (Digital Camera) using Dynamic  

E-Print Network [OSTI]

Managing the Storage and Battery Resources in an Image Capture Device (Digital Camera) using to be matched with intel- ligent image storage mechanisms that are aware of local storage and battery the consumed battery and storage resources in digital cameras. Such application aware technologies

Vahdat, Amin

326

Plasma jet ignition device  

DOE Patents [OSTI]

An ignition device of the plasma jet type is disclosed. The device has a cylindrical cavity formed in insulating material with an electrode at one end. The other end of the cylindrical cavity is closed by a metal plate with a small orifice in the center which plate serves as a second electrode. An arc jumping between the first electrode and the orifice plate causes the formation of a highly-ionized plasma in the cavity which is ejected through the orifice into the engine cylinder area to ignite the main fuel mixture. Two improvements are disclosed to enhance the operation of the device and the length of the plasma plume. One improvement is a metal hydride ring which is inserted in the cavity next to the first electrode. During operation, the high temperature in the cavity and the highly excited nature of the plasma breaks down the metal hydride, liberating hydrogen which acts as an additional fuel to help plasma formation. A second improvement consists of a cavity insert containing a plurality of spaced, metal rings. The rings act as secondary spark gap electrodes reducing the voltage needed to maintain the initial arc in the cavity.

McIlwain, Michael E. (Franklin, MA); Grant, Jonathan F. (Wayland, MA); Golenko, Zsolt (North Reading, MA); Wittstein, Alan D. (Fairfield, CT)

1985-01-15T23:59:59.000Z

327

Thermophotovoltaic energy conversion device  

DOE Patents [OSTI]

A thermophotovoltaic device and a method for making the thermophotovoltaic device are disclosed. The device includes an n-type semiconductor material substrate having top and bottom surfaces, a tunnel junction formed on the top surface of the substrate, a region of active layers formed on top of the tunnel junction and a back surface reflector (BSR). The tunnel junction includes a layer of heavily doped n-type semiconductor material that is formed on the top surface of the substrate and a layer of heavily doped p-type semiconductor material formed on the n-type layer. An optional pseudomorphic layer can be formed between the n-type and p-type layers. A region of active layers is formed on top of the tunnel junction. This region includes a base layer of p-type semiconductor material and an emitter layer of n-type semiconductor material. An optional front surface window layer can be formed on top of the emitter layer. An optional interference filter can be formed on top of the emitter layer or the front surface window layer when it is used. 1 fig.

Charache, G.W.; Baldasaro, P.F.; Egley, J.L.

1998-05-19T23:59:59.000Z

328

Temperature-insensitive phase-matched optical harmonic conversion crystal  

DOE Patents [OSTI]

Temperature-insensitive, phase-matched harmonic frequency conversion of laser light at a preferred wavelength of 1.064 microns can be achieved by use of a crystal of deuterated l-arginine phosphate. The crystal is cut and oriented so that the laser light propagates inside the crystal along one of several required directions, which correspond to a temperature-insensitive, phase-matching locus. The method of measuring and calculating the temperature-insensitive, phase-matching angles can be extended to other fundamental wavelengths and other crystal compositions. 12 figures.

Barker, C.E.; Eimerl, D.; Velsko, S.P.; Roberts, D.

1993-11-23T23:59:59.000Z

329

Temperature-insensitive phase-matched optical harmonic conversion crystal  

DOE Patents [OSTI]

Temperature-insensitive, phase-matched harmomic frequency conversion of laser light at a preferred wavelength of 1.064 microns can be achieved by use of a crystal of deuterated l-arginine phosphate. The crystal is cut and oriented so that the laser light propagates inside the crystal along one of several required directions, which correspond to a temperature-insensitive, phase-matching locus. The method of measuring and calculating the temperature-insensitive, phase-matching angles can be extended to other fundamental wavelengths and other crystal compositions.

Barker, Charles E. (Sunnyvale, CA); Eimerl, David (Livermore, CA); Velsko, Stephan P. (Livermore, CA); Roberts, David (Sagamore Hills, OH)

1993-01-01T23:59:59.000Z

330

Thermoelectric Materials, Devices and Systems:  

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

-DRAFT - FOR OFFICIAL USE ONLY - DRAFT Thermoelectric Materials, Devices and Systems: 1 Technology Assessment 2 Contents 3 1. Thermoelectric Generation ......

331

Improved Thermoelectric Devices: Advanced Semiconductor Materials for Thermoelectric Devices  

SciTech Connect (OSTI)

Broad Funding Opportunity Announcement Project: Phononic Devices is working to recapture waste heat and convert it into usable electric power. To do this, the company is using thermoelectric devices, which are made from advanced semiconductor materials that convert heat into electricity or actively remove heat for refrigeration and cooling purposes. Thermoelectric devices resemble computer chips, and they manage heat by manipulating the direction of electrons at the nanoscale. These devices aren’t new, but they are currently too inefficient and expensive for widespread use. Phononic Devices is using a high-performance, cost-effective thermoelectric design that will improve the device’s efficiency and enable electronics manufacturers to more easily integrate them into their products.

None

2009-12-11T23:59:59.000Z

332

Portable Source Identification Device  

SciTech Connect (OSTI)

U.S. Customs and Border Protection (CBP) is the primary enforcement agency protecting the nation’s ports of entry. CBP is enhancing its capability to interdict the illicit import of nuclear and radiological materials and devices that may be used by terrorists. Pacific Northwest National Laboratory (PNNL) is providing scientific and technical support to CBP in their goal to enable rapid deployment of nuclear and radiation detection systems at U. S. ports of entry to monitor 100% of the incoming international traffic and cargo while not adversely impacting the operations or throughput of the ports. As the deployment of radiation detection systems proceeds, there is a need to adapt the baseline radiation portal monitor (RPM) system technology to operations at these diverse ports of entry. When screening produces an alarm in the primary inspection RPM, the alarming vehicle is removed from the flow of commerce and the alarm is typically confirmed in a secondary inspection RPM. The portable source identification device (PSID) is a radiation sensor panel (RSP), based on thallium-doped sodium iodide (NaI(Tl)) scintillation detector and gamma spectroscopic analysis hardware and software, mounted on a scissor lift on a small truck. The lift supports a box containing a commercial off-the-shelf (COTS) sodium iodide detector that provides real-time isotopic identification, including neutron detectors to interdict Weapons of Mass Destruction (WMD) and radiation dispersion devices (RDD). The scissor lift will lower the detectors to within a foot off the ground and raise them to approximately 24 feet in the air, allowing a wide vertical scanning range.

Andersen, Eric S.; Samuel, Todd J.; Gervais, Kevin L.

2005-08-01T23:59:59.000Z

333

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

SciTech Connect (OSTI)

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

334

History matching and uncertainty quantificiation using sampling method  

E-Print Network [OSTI]

approach to uncertainty quantification for the nonlinear inverse problems. First, we propose a two-stage MCMC approach using sensitivities for quantifying uncertainty in history matching geological models. In the first stage, we compute the acceptance...

Ma, Xianlin

2009-05-15T23:59:59.000Z

335

A Hierarchical History Matching Method and its Applications  

E-Print Network [OSTI]

the computed drainage volume with the measured SRV within specified confidence limits. Finally, we demonstrate the value of integrating downhole temperature measurements as coarse-scale constraint during streamline-based history matching of dynamic production...

Yin, Jichao

2012-02-14T23:59:59.000Z

336

approach matching gene: Topics by E-print Network  

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

problem, and argued should be considered such as the evaluation of the performance of a CSP approach against traditional Deville, Yves 10 A classification of schema-based matching...

337

MATCH: Metadata Access Tool for Climate and Health Datasets  

DOE Data Explorer [Office of Scientific and Technical Information (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

338

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

339

Matching Gift Companies LEHIGH UNIVERSITY 1 3M Corporation  

E-Print Network [OSTI]

Corporation Foundation The Eaton Charitable Fund Electroline Corporation Eli Lilly and Company FoundationMatching Gift Companies LEHIGH UNIVERSITY 1 3M Corporation Abbott Laboratories Accenture Foundation Technologies, Inc. Air Products Air Products Foundation Albemarle Corporation Alcoa Foundation Alliance Capital

Gilchrist, James F.

340

JMatch: Java plus Pattern Matching Jed Liu Andrew C. Myers  

E-Print Network [OSTI]

considered useful in other languages. Functional languages offer ex­ pressive pattern matching. Logic representing the official policies or endorsement, either ex­ pressed or implied, of the Defense Advanced. Modal abstraction simplifies the spec­ ification (and use) of abstractions; invertible computation

Keinan, Alon

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

JMatch: Java plus Pattern Matching Jed Liu Andrew C. Myers  

E-Print Network [OSTI]

considered useful in other languages. Functional languages offer ex- pressive pattern matching. Logic representing the official policies or endorsement, either ex- pressed or implied, of the Defense Advanced. Modal abstraction simplifies the spec- ification (and use) of abstractions; invertible computation

Myers, Andrew C.

342

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

343

Mouse Pointing Endpoint Prediction Using Kinematic Template Matching  

E-Print Network [OSTI]

Mouse Pointing Endpoint Prediction Using Kinematic Template Matching Phillip T. Pasqual and Jacob O and that copies bear this notice and the full citation on the first page. Copyrights for components of this work

Wobbrock, Jacob O.

344

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

345

Micro environmental sensing device  

DOE Patents [OSTI]

A microelectromechanical (MEM) acceleration switch is disclosed which includes a proof mass flexibly connected to a substrate, with the proof mass being moveable in a direction substantially perpendicular to the substrate in response to a sensed acceleration. An electrode on the proof mass contacts one or more electrodes located below the proof mass to provide a switch closure in response to the sensed acceleration. Electrical latching of the switch in the closed position is possible with an optional latching electrode. The MEM acceleration switch, which has applications for use as an environmental sensing device, can be fabricated using micromachining.

Polosky, Marc A. (Tijeras, NM); Lukens, Laurance L. (Tijeras, NM)

2006-05-02T23:59:59.000Z

346

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

347

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

348

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

SciTech Connect (OSTI)

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

349

FAST: Fast Adaptive Silhouette Area based Template Matching  

E-Print Network [OSTI]

Template matching is a well-proven approach in the area of articulated object tracking. Matching accuracy and computation time of template matching are essential and yet often conflicting goals. In this paper, we present a novel, adaptive template matching approach based on the silhouette area of the articulated object. With our approach, the ratio between accuracy and speed simply is a modifiable parameter, and, even at high accuracy, it is still faster than a state-of-the-art approach. We approximate the silhouette area by a small set of axis-aligned rectangles. Utilizing the integral image, we can thus compare a silhouette with an input image at an arbitrary position independently of the resolution of the input image. In addition, our rectangle covering yields a very memory efficient representation of templates. Furthermore, we present a new method to build a template hierarchy optimized for our rectangular representation of template silhouettes. With the template hierarchy, the complexity of our matching method for n templates is O(logn) and independent of the input resolution. For example, a set of 3000 templates can be matched in 2.3 ms. Overall, our novel methods are an important contribution to a complete system for tracking articulated objects.

Daniel Mohr; Gabriel Zachmann

2010-01-01T23:59:59.000Z

350

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

351

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

352

Thermoplastic tape compaction device  

DOE Patents [OSTI]

A device is disclosed for bonding a thermoplastic tape to a substrate to form a fully consolidated composite. This device has an endless chain associated with a frame so as to rotate in a plane that is perpendicular to a long dimension of the tape, the chain having pivotally connected chain links with each of the links carrying a flexible foot member that extends outwardly from the chain. A selected number of the foot members contact the tape, after the heating thereof, to cause the heated tape to bond to the substrate. The foot members are each a thin band of metal oriented transversely to the chain, with a flexibility and width and length to contact the tape so as to cause the tape to conform to the substrate to achieve consolidation of the tape and the substrate. A biased leaf-type spring within the frame bears against an inner surface of the chain to provide the compliant pressure necessary to bond the tape to the substrate. The chain is supported by sprockets on shafts rotatably supported in the frame and, in one embodiment, one of the shafts has a drive unit to produce rotation such that the foot members in contact with the tape move at the same speed as the tape. Cooling jets are positioned along the frame to cool the resultant consolidated composite. 5 figures.

Campbell, V.W.

1994-12-27T23:59:59.000Z

353

Carbon based prosthetic devices  

SciTech Connect (OSTI)

This is the final report of a one-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The project objective was to evaluate the use of carbon/carbon-fiber-reinforced composites for use in endoprosthetic devices. The application of these materials for the metacarpophalangeal (MP) joints of the hand was investigated. Issues concerning mechanical properties, bone fixation, biocompatibility, and wear are discussed. A system consisting of fiber reinforced materials with a pyrolytic carbon matrix and diamond-like, carbon-coated wear surfaces was developed. Processes were developed for the chemical vapor infiltration (CVI) of pyrolytic carbon into porous fiber preforms with the ability to tailor the outer porosity of the device to provide a surface for bone in-growth. A method for coating diamond-like carbon (DLC) on the articulating surface by plasma-assisted chemical vapor deposition (CVD) was developed. Preliminary results on mechanical properties of the composite system are discussed and initial biocompatibility studies were performed.

Devlin, D.J.; Carroll, D.W.; Barbero, R.S.; Archuleta, T. [Los Alamos National Lab., NM (US); Klawitter, J.J.; Ogilvie, W.; Strzepa, P. [Ascension Orthopedics (US); Cook, S.D. [Tulane Univ., New Orleans, LA (US). School of Medicine

1998-12-31T23:59:59.000Z

354

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

355

Examining the specific entropy (density of adiabatic invariants) of the outer electron radiation belt  

SciTech Connect (OSTI)

Using temperature and number-density measurements of the energetic-electron population from multiple spacecraft in geosynchronous orbit, the specific entropy S = T/n{sup 2/3} of the outer electron radiation belt is calculated. Then 955,527 half-hour-long data intervals are statistically analyzed. Local-time and solar-cycle variations in S are examined. The median value of the specific entropy (2.8 x 10{sup 7} eVcm{sup 2}) is much larger than the specific entropy of other particle populations in and around the magnetosphere. The evolution of the specific entropy through high-speed-stream-driven geomagnetic storms and through magnetic-cloud-driven geomagnetic storms is studied using superposed-epoch analysis. For high-speed-stream-driven storms, systematic variations in the entropy associated with electron loss and gain and with radiation-belt heating are observed in the various storm phases. For magnetic-cloud-driven storms, multiple trigger choices for the data superpositions reveal the effects of interplanetary shock arrival, sheath driving, cloud driving, and recovery phase. The specific entropy S = T/n{sup 2/3} is algebraically expressed in terms of the first and second adiabatic invariants of the electrons: this allows a relativistic expression for S in terms of T and n to be derived. For the outer electron radiation belt at geosynchronous orbit, the relativistic corrections to the specific entropy expression are -15%.

Borovsky, Joseph E [Los Alamos National Laboratory; Denton, Michael H [LANCASTER UNIV

2008-01-01T23:59:59.000Z

356

Adiabatic Quasi-Spherical Compressions Driven by Magnetic Pressure for Inertial Confinement Fusion  

SciTech Connect (OSTI)

The magnetic implosion of a high-Z quasi-spherical shell filled with DT fuel by the 20-MA Z accelerator can heat the fuel to near-ignition temperature. The attainable implosion velocity on Z, 13-cm/{micro}s, is fast enough that thermal losses from the fuel to the shell are small. The high-Z shell traps radiation losses from the fuel, and the fuel reaches a high enough density to reabsorb the trapped radiation. The implosion is then nearly adiabatic. In this case the temperature of the fuel increases as the square of the convergence. The initial temperature of the fuel is set by the heating of an ion acoustic wave to be about 200-eV after a convergence of 4. To reach the ignition temperature of 5-keV an additional convergence of 5 is required. The implosion dynamics of the quasi-spherical implosion is modeled with the 2-D radiation hydrodynamic code LASNEX. LASNEX shows an 8-mm diameter quasi-spherical tungsten shell on Z driving 6-atmospheres of DT fuel nearly to ignition at 3.5-keV with a convergence of 20. The convergence is limited by mass flow along the surface of the quasi-spherical shell. With a convergence of 20 the final spot size is 400-{micro}m in diameter.

NASH,THOMAS J.

2000-11-01T23:59:59.000Z

357

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

SciTech Connect (OSTI)

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

358

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

SciTech Connect (OSTI)

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

359

Fuel vapor control device  

SciTech Connect (OSTI)

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

360

Ceramics for fusion devices  

SciTech Connect (OSTI)

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

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

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

362

Tunable surface plasmon devices  

DOE Patents [OSTI]

A tunable extraordinary optical transmission (EOT) device wherein the tunability derives from controlled variation of the dielectric constant of a semiconducting material (semiconductor) in evanescent-field contact with a metallic array of sub-wavelength apertures. The surface plasmon resonance wavelength can be changed by changing the dielectric constant of the dielectric material. In embodiments of this invention, the dielectric material is a semiconducting material. The dielectric constant of the semiconducting material in the metal/semiconductor interfacial region is controllably adjusted by adjusting one or more of the semiconductor plasma frequency, the concentration and effective mass of free carriers, and the background high-frequency dielectric constant in the interfacial region. Thermal heating and/or voltage-gated carrier-concentration changes may be used to variably adjust the value of the semiconductor dielectric constant.

Shaner, Eric A. (Rio Rancho, NM); Wasserman, Daniel (Lowell, MA)

2011-08-30T23:59:59.000Z

363

Light emitting ceramic device  

DOE Patents [OSTI]

A light-emitting ceramic based panel, hereafter termed "electroceramescent" panel, is herein claimed. The electroceramescent panel is formed on a substrate providing mechanical support as well as serving as the base electrode for the device. One or more semiconductive ceramic layers directly overlay the substrate, and electrical conductivity and ionic diffusion are controlled. Light emitting regions overlay the semiconductive ceramic layers, and said regions consist sequentially of a layer of a ceramic insulation layer and an electroluminescent layer, comprised of doped phosphors or the equivalent. One or more conductive top electrode layers having optically transmissive areas overlay the light emitting regions, and a multi-layered top barrier cover comprising one or more optically transmissive non-combustible insulation layers overlay said top electrode regions.

Valentine, Paul; Edwards, Doreen D.; Walker, Jr., William John; Slack, Lyle H.; Brown, Wayne Douglas; Osborne, Cathy; Norton, Michael; Begley, Richard

2010-05-18T23:59:59.000Z

364

Nuclear reactor safety device  

DOE Patents [OSTI]

A safety device is described for use in a nuclear reactor for axially repositioning a control rod with respect to the reactor core in the event of a thermal excursion. It comprises a laminated strip helically configured to form a tube, said tube being in operative relation to said control rod. The laminated strip is formed of at least two materials having different thermal coefficients of expansion, and is helically configured such that the material forming the outer lamina of the tube has a greater thermal coefficient of expansion than the material forming the inner lamina of said tube. In the event of a thermal excursion the laminated strip will tend to curl inwardly so that said tube will increase in length, whereby as said tube increases in length it exerts a force on said control rod to axially reposition said control rod with respect to said core.

Hutter, E.

1983-08-15T23:59:59.000Z

365

Capillary interconnect device  

DOE Patents [OSTI]

A manifold for connecting external capillaries to the inlet and/or outlet ports of a microfluidic device for high pressure applications is provided. The fluid connector for coupling at least one fluid conduit to a corresponding port of a substrate that includes: (i) a manifold comprising one or more channels extending therethrough wherein each channel is at least partially threaded, (ii) one or more threaded ferrules each defining a bore extending therethrough with each ferrule supporting a fluid conduit wherein each ferrule is threaded into a channel of the manifold, (iii) a substrate having one or more ports on its upper surface wherein the substrate is positioned below the manifold so that the one or more ports is aligned with the one or more channels of the manifold, and (iv) means for applying an axial compressive force to the substrate to couple the one or more ports of the substrate to a corresponding proximal end of a fluid conduit.

Renzi, Ronald F. (Tracy, CA)

2007-12-25T23:59:59.000Z

366

False color viewing device  

DOE Patents [OSTI]

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, James W. (108 Independent Blvd., Aiken, SC 29801)

1992-01-01T23:59:59.000Z

367

False color viewing device  

DOE Patents [OSTI]

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. 7 figs.

Kronberg, J.W.

1992-10-20T23:59:59.000Z

368

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

369

Air bag restraint device  

DOE Patents [OSTI]

A rear-seat air bag restraint device is disclosed that prevents an individual, or individuals, from continuing violent actions while being transported in a patrol vehicle`s rear seat without requiring immediate physical contact by the law enforcement officer. The air bag is activated by a control switch in the front seat and inflates to independently restrict the amount of physical activity occurring in the rear seat of the vehicle while allowing the officer to safely stop the vehicle. The air bag can also provide the officer additional time to get backup personnel to aid him if the situation warrants it. The bag is inflated and maintains a constant pressure by an air pump. 8 figs.

Marts, D.J.; Richardson, J.G.

1995-10-17T23:59:59.000Z

370

Antimony Based III-V Thermophotovoltaic Devices  

SciTech Connect (OSTI)

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

371

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

372

Monolithic multi-color light emission/detection device  

SciTech Connect (OSTI)

A single-crystal, monolithic, tandem, multi-color optical transceiver device is described, including (a) an InP substrate having upper and lower surfaces, (b) a first junction on the upper surface of the InP substrate, (c) a second junction on the first junction. The first junction is preferably GaInAsP of defined composition, and the second junction is preferably InP. The two junctions are lattice matched. The second junction has a larger energy band gap than the first junction. Additional junctions having successively larger energy band gaps may be included. The device is capable of simultaneous and distinct multi-color emission and detection over a single optical fiber.

Wanlass, Mark W. (Golden, CO)

1995-01-01T23:59:59.000Z

373

Monolithic multi-color light emission/detection device  

SciTech Connect (OSTI)

A single-crystal, monolithic, tandem, multi-color optical transceiver device is described, including (a) an InP substrate having upper and lower surfaces, (b) a first junction on the upper surface of the InP substrate, (c) a second junction on the first junction. The first junction is preferably GaInAsP of defined composition, and the second junction is preferably InP. The two junctions are lattice matched. The second junction has a larger energy band gap than the first junction. Additional junctions having successively larger energy band gaps may be included. The device is capable of simultaneous and distinct multi-color emission and detection over a single optical fiber. 5 figs.

Wanlass, M.W.

1995-02-21T23:59:59.000Z

374

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

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

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

375

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

376

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

377

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

378

Structured wafer for device processing  

SciTech Connect (OSTI)

A structured wafer that includes through passages is used for device processing. Each of the through passages extends from or along one surface of the structured wafer and forms a pattern on a top surface area of the structured wafer. The top surface of the structured wafer is bonded to a device layer via a release layer. Devices are processed on the device layer, and are released from the structured wafer using etchant. The through passages within the structured wafer allow the etchant to access the release layer to thereby remove the release layer.

Okandan, Murat; Nielson, Gregory N

2014-11-25T23:59:59.000Z

379

Use of adaptive matching filters to improve reservoir definition  

SciTech Connect (OSTI)

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

380

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. 2 figs.

Girling, P.M.

1986-04-22T23:59:59.000Z

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

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

382

Automatic Mechetronic Wheel Light Device  

DOE Patents [OSTI]

A wheel lighting device for illuminating a wheel of a vehicle to increase safety and enhance aesthetics. The device produces the appearance of a "ring of light" on a vehicle's wheels as the vehicle moves. The "ring of light" can automatically change in color and/or brightness according to a vehicle's speed, acceleration, jerk, selection of transmission gears, and/or engine speed. The device provides auxiliary indicator lights by producing light in conjunction with a vehicle's turn signals, hazard lights, alarm systems, and etc. The device comprises a combination of mechanical and electronic components and can be placed on the outer or inner surface of a wheel or made integral to a wheel or wheel cover. The device can be configured for all vehicle types, and is electrically powered by a vehicle's electrical system and/or battery.

Khan, Mohammed John Fitzgerald (Silver Spring, MD)

2004-09-14T23:59:59.000Z

383

Visual Text Features for Image Matching Sam S. Tsai1  

E-Print Network [OSTI]

Visual Text Features for Image Matching Sam S. Tsai1 , Huizhong Chen1 , David Chen1 , Vasu features that are based on text in cameraphone images. A robust text detection algorithm locates individual the visual text features in a way that resembles image features. We calculate their location, scale

Girod, Bernd

384

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

385

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.

386

SHAPE MATCHING USING FUZZY DISCRETE PARTICLE SWARM OPTIMIZATION*  

E-Print Network [OSTI]

importantly, the recognition based on shape feature is also a central problem in those fields such as patternSHAPE MATCHING USING FUZZY DISCRETE PARTICLE SWARM OPTIMIZATION* Ji-Xiang Du1, 2 De-Shuang Huang1 based on fuzzy discrete particle swarm optimization (FDPSO) is proposed. Based on fuzzy theory and PSO

Hefei Institute of Intelligent Machines

387

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

388

On Efficient Matching of Streaming XML Documents and Queries  

E-Print Network [OSTI]

On Efficient Matching of Streaming XML Documents and Queries Laks V.S. Lakshmanan 1 and P. Sailaja­commerce, and supply­chain management require the ability to manage large sets of specifications of prod­ ucts and.g., a document that is streaming by) is quite small compared to the number of registered queries (which can

Lakshmanan, Laks V.S.

389

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

390

CONTINUOUS EDGE GRADIENT-BASED TEMPLATE MATCHING FOR ARTICULATED OBJECTS  

E-Print Network [OSTI]

template matching, deformable object detection, confidence map, edge feature, graphics hardware In this paper, we propose a novel edge gradient based template matching method for object detection. In contrast to other methods, ours does not perform any binarization or discretization during the online matching. This is facilitated by a new continuous edge gradient similarity measure. Its main components are a novel edge gradient operator, which is applied to query and template images, and the formulation as a convolution, which can be computed very efficiently in Fourier space. We compared our method to a state-of-the-art chamfer based matching method. The results demonstrate that our method is much more robust against weak edge response and yields much better confidence maps with fewer maxima that are also more significant. In addition, our method lends itself well to efficient implementation on GPUs: at a query image resolution of 320 × 256 and a template resolution of 80 × 80 we can generate about 330 confidence maps per second. 1

Daniel Mohr; Gabriel Zachmann

391

Continuous Edge Gradient-Based Template Matching for Articulated  

E-Print Network [OSTI]

Zachmann IfI Technical Report Series IfI-09-01 #12;Impressum Publisher: Institut für Informatik, Technische (Technical Computer Science) Prof. Dr. Gabriel Zachmann (Computer Graphics) #12;Continuous Edge Gradient-Based Template Matching for Articulated Objects Daniel Mohr and Gabriel Zachmann Abstract Detection

Zachmann, Gabriel

392

Matching NLO QCD computations with PYTHIA using MC@NLO  

E-Print Network [OSTI]

We present the matching between a next-to-leading order computation in QCD and the PYTHIA parton shower Monte Carlo, according to the MC@NLO formalism. We study the case of initial-state radiation, and consider in particular single vector boson hadroproduction.

Paolo Torrielli; Stefano Frixione

2010-05-05T23:59:59.000Z

393

A Dynamic Matching and Scheduling Algorithm for Heterogeneous Computing Systems  

E-Print Network [OSTI]

A heterogeneous computing system provides a variety of different machines, orchestrated to perform an application Maheswaran and Howard Jay Siegel Parallel Processing Laboratory School of Electrical and Computer Engineering whose subtasks have diverse execution requirements. The subtasks must be assigned to machines (matching

394

Experiences with string matching on the Fermi Architecture  

SciTech Connect (OSTI)

String matching is at the core of many real-world applications, such as security, bioinformatic, data mining. All these applications requires the ability to match always growing data sets against large dictionaries effectively, fastly and possibly in real time. Unfortunately, string matching is a computationally intensive procedure which poses significant challenges on current software and hardware implementations. Graphic Processing Units (GPU) have become an interesting target for such high-throughput applications, but the algorithms and the data structures need to be redesigned to be parallelized and adapted to the underlining hardware, coping with the limitations imposed by these architectures. In this paper we present an efficient implementation of the Aho-Corasick string matching algorithm on GPU, showing how we progressively redesigned the algorithm and the data structures to fit on the architecture. We then evaluate the implementation on single and multiple Tesla C2050 (T20 ``Fermi'' based) boards, comparing them to the previous Tesla C1060 (T10 based) solutions and equivalent multicore implementations on x86 CPUs. We discuss the various tradeoffs of the different architectures.

Tumeo, Antonino; Secchi, Simone; Villa, Oreste

2011-02-25T23:59:59.000Z

395

Commitment Under Uncertainty: Two-Stage Stochastic Matching Problems  

E-Print Network [OSTI]

on classical combinatorial optimization problems [23]: set cover, minimum spanning tree, Steiner tree, maximum structures, with the notable exception of Gupta and P´al's work on stochastic Steiner Tree [9]. SecondCommitment Under Uncertainty: Two-Stage Stochastic Matching Problems Irit Katriel , Claire Kenyon

Mathieu, Claire

396

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

397

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 in the last 25 years. Lightduty truck engines historically have poor efficiency, converting only 20 percent of gasoline into useful work. Multifuel compound engine technologies make it possible to increase efficiency

398

Enhancing Patent Expertise through Automatic Matching with Scientific Papers  

E-Print Network [OSTI]

Enhancing Patent Expertise through Automatic Matching with Scientific Papers Kafil Hajlaoui of scientific papers, developed in the context of an international patents classification plan related in their task of evaluation of the originality and novelty of a patent, by of- fering to the latter the most

Paris-Sud XI, Université de

399

Approximate Weighted Matching On Emerging Manycore and Multithreaded Architectures  

SciTech Connect (OSTI)

Graph matching is a prototypical combinatorial problem with many applications in computer science and scientific computing, but algorithms for computing optimal matchings are challenging to parallelize. Approximate matching algorithms provide an alternate route for parallelization, and in many contexts compute near-optimal matchings for large-scale graphs. We present sharedmemory parallel implementations for computing half-approximate weighted matching on state-of-the-art multicore (Intel Nehalem and AMD Magny-Cours), manycore (Nvidia Tesla and Nvidia Fermi) and massively multithreaded (Cray XMT) platforms. We provide two implementations: the first implementation uses shared work queues, and is suited to all these platforms; the second implementation is based on dataflow principles, and exploits the architectural features of the Cray XMT. Using a carefully chosen dataset that exhibits characteristics from a wide range of real-world applications, we show scalable performance across different platforms. In particular, for one instance of the input, an R-MAT graph (RMAT-G), we show speedups of: about 32 on 48 cores of an AMD Magny-Cours; 7 on 8 cores of Intel Nehalem; 3 on Nvidia Tesla and 10 on Nvidia Fermi relative to one core of Intel Nehalem; and 60 on 128 processors of Cray XMT. We demonstrate good weak and strong scaling for graphs with up to a billion edges using up to 12, 800 threads. Given the breadth of this work, we focus on simplicity and portability of software rather than excessive fine-tuning for each platform. To the best of our knowledge, this is the first such large-scale study of the half-approximate weighted matching problem on shared-memory platforms. Driven by the critical enabling role of combinatorial algorithms such as matching in scientific computing and the emergence of informatics applications, there is a growing demand to support irregular computations on current and future computing platforms. In this context, we evaluate the capability of emerging multithreaded platforms to tolerate latency induced by irregular memory access patterns, and to support fine-grained parallelism via light-weight synchronization mechanisms. By contrasting the architectural features of these platforms against the Cray XMT, which is specifically designed to support irregular memory-intensive applications, we delineate the impact of these choices on performance.

Halappanavar, Mahantesh; Feo, John T.; Villa, Oreste; Tumeo, Antonino; Pothen, Alex

2012-11-30T23:59:59.000Z

400

Signature of smooth transition from diabatic to adiabatic states in heavy-ion fusion reactions at deep subbarrier energies  

E-Print Network [OSTI]

We propose a novel extension of the standard coupled-channels framework for heavy-ion reactions in order to analyze fusion reactions at deep subbarrier incident energies. This extension simulates a smooth transition between the diabatic two-body and the adiabatic one-body states. To this end, we damp gradually the off-diagonal part of the coupling potential, for which the position of the onset of the damping varies for each eigen channel. We show that this model accounts well for the steep falloff of the fusion cross sections for the $^{16}$O+$^{208}$Pb, $^{64}$Ni+$^{64}$Ni, and $^{58}$Ni+$^{58}$Ni reactions.

Takatoshi Ichikawa; Kouichi Hagino; Akira Iwamoto

2009-09-12T23:59:59.000Z

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.


401

EFFECTS OF NON-ISOTROPIC SCATTERING, MAGNETIC HELICITY, AND ADIABATIC FOCUSING ON DIFFUSIVE TRANSPORT OF SOLAR ENERGETIC PARTICLES  

SciTech Connect (OSTI)

Transport of solar energetic particles in interplanetary space is analyzed. A new systematic derivation of the diffusion approximation is given, which incorporates the effects of non-isotropic scattering, magnetic helicity, and adiabatic focusing in a non-uniform large-scale magnetic field. The derivation is based on a system of stochastic differential equations, equivalent to the Fokker-Planck equation, and the new method is a generalization of the Smoluchowski approximation in the theory of the Brownian motion. Simple, physically transparent expressions for the transport coefficients are derived. Different results of earlier treatments of the problem are related to the assumptions regarding the evolving particle distribution.

Litvinenko, Yuri E. [Department of Mathematics, University of Waikato, P. B. 3105, Hamilton (New Zealand)

2012-06-10T23:59:59.000Z

402

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

SciTech Connect (OSTI)

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

403

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

404

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

405

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

406

Polymer electronic devices and materials.  

SciTech Connect (OSTI)

Polymer electronic devices and materials have vast potential for future microsystems and could have many advantages over conventional inorganic semiconductor based systems, including ease of manufacturing, cost, weight, flexibility, and the ability to integrate a wide variety of functions on a single platform. Starting materials and substrates are relatively inexpensive and amenable to mass manufacturing methods. This project attempted to plant the seeds for a new core competency in polymer electronics at Sandia National Laboratories. As part of this effort a wide variety of polymer components and devices, ranging from simple resistors to infrared sensitive devices, were fabricated and characterized. Ink jet printing capabilities were established. In addition to promising results on prototype devices the project highlighted the directions where future investments must be made to establish a viable polymer electronics competency.

Schubert, William Kent; Baca, Paul Martin; Dirk, Shawn M.; Anderson, G. Ronald; Wheeler, David Roger

2006-01-01T23:59:59.000Z

407

Personal cooling air filtering device  

DOE Patents [OSTI]

A temperature modification system for modifying the temperature of fluids includes at least one thermally conductive carbon foam element, the carbon foam element having at least one flow channel for the passage of fluids. At least one temperature modification device is provided, the temperature modification device thermally connected to the carbon foam element and adapted to modify the temperature of the carbon foam to modify the temperature of fluids flowing through the flow channels. Thermoelectric and/or thermoionic elements can preferably be used as the temperature modification device. A method for the reversible temperature modification of fluids includes the steps of providing a temperature modification system including at least one thermally conductive carbon foam element having flow channels and at least one temperature modification device, and flowing a fluid through the flow channels.

Klett, James (Knoxville, TN); Conway, Bret (Denver, NC)

2002-08-13T23:59:59.000Z

408

Devices for collecting chemical compounds  

DOE Patents [OSTI]

A device for sampling chemical compounds from fixed surfaces and related methods are disclosed. The device may include a vacuum source, a chamber and a sorbent material. The device may utilize vacuum extraction to volatilize the chemical compounds from a fixed surface so that they may be sorbed by the sorbent material. The sorbent material may then be analyzed using conventional thermal desorption/gas chromatography/mass spectrometry (TD/GC/MS) instrumentation to determine presence of the chemical compounds. The methods may include detecting release and presence of one or more chemical compounds and determining the efficacy of decontamination. The device may be useful in collection and analysis of a variety of chemical compounds, such as residual chemical warfare agents, chemical attribution signatures and toxic industrial chemicals.

Scott, Jill R; Groenewold, Gary S

2013-12-24T23:59:59.000Z

409

Device-transparent personal storage  

E-Print Network [OSTI]

Users increasingly store data collections such as digital photographs on multiple personal devices, each of which typically presents the user with a storage management interface isolated from the contents of all other ...

Strauss, Jacob A. (Jacob Alo), 1979-

2010-01-01T23:59:59.000Z

410

Piezo-phototronic effect devices  

DOE Patents [OSTI]

A semiconducting device includes a piezoelectric structure that has a first end and an opposite second end. A first conductor is in electrical communication with the first end and a second conductor is in electrical communication with the second end so as to form an interface therebetween. A force applying structure is configured to maintain an amount of strain in the piezoelectric member sufficient to generate a desired electrical characteristic in the semiconducting device.

Wang, Zhong L.; Yang, Qing

2013-09-10T23:59:59.000Z

411

Lih thermal energy storage device  

DOE Patents [OSTI]

A thermal energy storage device for use in a pulsed power supply to store waste heat produced in a high-power burst operation utilizes lithium hydride as the phase change thermal energy storage material. The device includes an outer container encapsulating the lithium hydride and an inner container supporting a hydrogen sorbing sponge material such as activated carbon. The inner container is in communication with the interior of the outer container to receive hydrogen dissociated from the lithium hydride at elevated temperatures.

Olszewski, Mitchell (Knoxville, TN); Morris, David G. (Knoxville, TN)

1994-01-01T23:59:59.000Z

412

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

413

"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

414

SLAC All Access: Vacuum Microwave Device Department  

ScienceCinema (OSTI)

The Vacuum Microwave Device Department (VMDD) builds the devices that make SLAC's particle accelerators go. These devices, called klystrons, generate intense waves of microwave energy that rocket subatomic particles up to nearly the speed of light.

Haase, Andy

2014-06-13T23:59:59.000Z

415

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

416

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

SciTech Connect (OSTI)

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

417

Load Response Fundamentally Matches Power System Reliability Requirements  

SciTech Connect (OSTI)

Responsive load is the most underutilized reliability resource available to the power system. Loads are frequently barred from providing the highest value and most critical reliability services; regulation and spinning reserve. Advances in communications and control technology now make it possible for some loads to provide both of these services. The limited storage incorporated in some loads better matches their response capabilities to the fast reliability-service markets than to the hourly energy markets. Responsive loads are frequently significantly faster and more accurate than generators, increasing power system reliability. Incorporating fast load response into microgrids further extends the reliability response capabilities that can be offered to the interconnected power system. The paper discusses the desired reliability responses, why this matches some loads' capabilities, what the advantages are for the power system, implications for communications and monitoring requirements, and how this resource can be exploited.

Kirby, Brendan J [ORNL] [ORNL

2007-01-01T23:59:59.000Z

418

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

419

Impedance matched joined drill pipe for improved acoustic transmission  

DOE Patents [OSTI]

An impedance matched jointed drill pipe for improved acoustic transmission. A passive means and method that maximizes the amplitude and minimize the temporal dispersion of acoustic signals that are sent through a drill string, for use in a measurement while drilling telemetry system. The improvement in signal transmission is accomplished by replacing the standard joints in a drill string with joints constructed of a material that is impedance matched acoustically to the end of the drill pipe to which it is connected. Provides improvement in the measurement while drilling technique which can be utilized for well logging, directional drilling, and drilling dynamics, as well as gamma-ray spectroscopy while drilling post shot boreholes, such as utilized in drilling post shot boreholes.

Moss, William C. (San Mateo, CA)

2000-01-01T23:59:59.000Z

420

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.

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

Semiconductor-based, large-area, flexible, electronic devices  

SciTech Connect (OSTI)

Novel articles and methods to fabricate the same resulting in flexible, large-area, triaxially textured, single-crystal or single-crystal-like, semiconductor-based, electronic devices are disclosed. Potential applications of resulting articles are in areas of photovoltaic devices, flat-panel displays, thermophotovoltaic devices, ferroelectric devices, light emitting diode devices, computer hard disc drive devices, magnetoresistance based devices, photoluminescence based devices, non-volatile memory devices, dielectric devices, thermoelectric devices and quantum dot laser devices.

Goyal, Amit (Knoxville, TN)

2011-03-15T23:59:59.000Z

422

Aerosol can waste disposal device  

DOE Patents [OSTI]

Disclosed is a device for removing gases and liquid from containers. The device punctures the bottom of a container for purposes of exhausting gases and liquid from the container without their escaping into the atmosphere. The device includes an inner cup or cylinder having a top portion with an open end for receiving a container and a bottom portion which may be fastened to a disposal or waste container in a substantially leak-proof manner. A piercing device is mounted in the lower portion of the inner cylinder for puncturing the can bottom placed in the inner cylinder. An outer cylinder having an open end and a closed end fits over the top portion of the inner cylinder in telescoping engagement. A force exerted on the closed end of the outer cylinder urges the bottom of a can in the inner cylinder into engagement with the piercing device in the bottom of the inner cylinder to form an opening in the can bottom, thereby permitting the contents of the can to enter the disposal container. 7 figures.

O'Brien, M.D.; Klapperick, R.L.; Bell, C.

1993-12-21T23:59:59.000Z

423

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

424

Bad data packet capture device  

DOE Patents [OSTI]

An apparatus and method for capturing data packets for analysis on a network computing system includes a sending node and a receiving node connected by a bi-directional communication link. The sending node sends a data transmission to the receiving node on the bi-directional communication link, and the receiving node receives the data transmission and verifies the data transmission to determine valid data and invalid data and verify retransmissions of invalid data as corresponding valid data. A memory device communicates with the receiving node for storing the invalid data and the corresponding valid data. A computing node communicates with the memory device and receives and performs an analysis of the invalid data and the corresponding valid data received from the memory device.

Chen, Dong; Gara, Alan; Heidelberger, Philip; Vranas, Pavlos

2010-04-20T23:59:59.000Z

425

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

426

Device Independent Random Number Generation  

E-Print Network [OSTI]

Randomness is an invaluable resource in today's life with a broad use reaching from numerical simulations through randomized algorithms to cryptography. However, on the classical level no true randomness is available and even the use of simple quantum devices in a prepare-measure setting suffers from lack of stability and controllability. This gave rise to a group of quantum protocols that provide randomness certified by classical statistical tests -- Device Independent Quantum Random Number Generators. In this paper we review the most relevant results in this field, which allow the production of almost perfect randomness with help of quantum devices, supplemented with an arbitrary weak source of additional randomness. This is in fact the best one could hope for to achieve, as with no starting randomness (corresponding to no free will in a different concept) even a quantum world would have a fully deterministic description.

Mataj Pivoluska; Martin Plesch

2015-02-23T23:59:59.000Z

427

Metamaterials for terahertz polarimetric devices  

SciTech Connect (OSTI)

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

428

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

429

Surface-micromachined microfluidic devices  

DOE Patents [OSTI]

Microfluidic devices are disclosed which can be manufactured using surface-micromachining. These devices utilize an electroosmotic force or an electromagnetic field to generate a flow of a fluid in a microchannel that is lined, at least in part, with silicon nitride. Additional electrodes can be provided within or about the microchannel for separating particular constituents in the fluid during the flow based on charge state or magnetic moment. The fluid can also be pressurized in the channel. The present invention has many different applications including electrokinetic pumping, chemical and biochemical analysis (e.g. based on electrophoresis or chromatography), conducting chemical reactions on a microscopic scale, and forming hydraulic actuators.

Galambos, Paul C. (Albuquerque, NM); Okandan, Murat (Albuquerque, NM); Montague, Stephen (Albuquerque, NM); Smith, James H. (Redmond, WA); Paul, Phillip H. (Livermore, CA); Krygowski, Thomas W. (Cortlandt Manor, NY); Allen, James J. (Albuquerque, NM); Nichols, Christopher A. (Hauppauge, NY); Jakubczak, II, Jerome F. (Rio Rancho, NM)

2003-01-01T23:59:59.000Z

430

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

431

Gas sensing with acoustic devices  

SciTech Connect (OSTI)

A survey is made of acoustic devices that are suitable as gas and vapor sensors. This survey focuses on attributes such as operating frequency, mass sensitivity, quality factor (Q), and their ability to be fabricated on a semiconductor substrate to allow integration with electronic circuitry. The treatment of the device surface with chemically-sensitive films to detect species of interest is discussed. Strategies for improving discrimination are described, including sensor arrays and species concentration and separation schemes. The advantages and disadvantages of integrating sensors with microelectronics are considered, along with the effect on sensitivity of scaling acoustic gas sensors to smaller size.

Martin, S.J.; Frye, G.C. [Sandia National Labs., Albuquerque, NM (United States); Spates, J.J. [Ktech Corp., Albuquerque, NM (United States); Butler, M.A. [Sandia National Labs., Albuquerque, NM (United States)

1996-12-31T23:59:59.000Z

432

Adiabatic charge pumping in open quantum systems J.E. Avron (a) , A. Elgart (b) , G.M. Graf (c) , L. Sadun (d) , K. Schnee (e)  

E-Print Network [OSTI]

Adiabatic charge pumping in open quantum systems J.E. Avron (a) , A. Elgart (b) , G.M. Graf (c) , L for charge transport in quantum pumps connected to a number of external leads. It is proved that under rather the pump is given by a formula of Buttiker, Pr^etre, and Thomas, relating it to the frozen S

433

Adiabatic charge pumping in open quantum systems J.E. Avron (a) , A. Elgart (b) , G.M. Graf (c) , L. Sadun (d) , K. Schnee (e)  

E-Print Network [OSTI]

Adiabatic charge pumping in open quantum systems J.E. Avron (a) , A. Elgart (b) , G.M. Graf (c) , L for charge transport in quantum pumps connected to a number of external leads. It is proved that under rather the pump is given by a formula of BË?uttiker, Prâ??etre, and Thomas, relating it to the frozen S

434

arXiv:cond-mat/0307619v231Aug2003 Quantum pumping in closed systems, adiabatic transport, and the Kubo formula  

E-Print Network [OSTI]

arXiv:cond-mat/0307619v231Aug2003 Quantum pumping in closed systems, adiabatic transport pumping in closed systems is considered. We explain that the Kubo formula contains all the physically relevant ingredients for the calculation of the pumped charge (Q) within the frame- work of linear response

Cohen, Doron

435

Coherent superposition of M-states in a single rovibrational level of H2 by Stark-induced adiabatic Raman passage  

E-Print Network [OSTI]

2014) We prepare an ensemble of isolated rovibrationally excited (v = 1, J = 2) H2 molecules in a phase possibilities for investigations of phase-locked reaction dynamics. Although considerable effort has been spent- locked superposition of magnetic sublevels M using Stark-induced adiabatic Raman passage with linearly

Zare, Richard N.

436

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.

437

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

438

Asymmetric perfectly matched layer for the absorption of waves  

SciTech Connect (OSTI)

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

439

InP substrate evaluation by MOVPE growth of lattice matched epitaxial layers.  

SciTech Connect (OSTI)

InP substrates form the starting point for a wide variety of semiconductor devices. The surface morphology produced during epitaxy depends critically on the starting substrate. We evaluated (1 0 0)-oriented InP wafers from three different vendors by growing thick (5 mu m) lattice-matched epilayers of InP, Gain As, and AlInAs. We assessed the surfaces with differential interference contrast microscopy and atomic force microscopy. Wafers with near singular (1 0 0) orientations produced inferior surfaces in general. Vicinal substrates with small misorientations improved the epitaxial surface for InP dramatically, reducing the density of macroscopic defects while maintaining a low RMS roughness. GaInAs and AlInAs epitaxy step-bunched forming undulations along the miscut direction. Sulfur-doped wafers were considered for singular (1 0 0) and for 0.2 degrees misorientation toward (1 1 0). We found that mound defects observed for InP and GaInAs layers on iron-doped singular wafers were absent for singular sulfur-doped wafers. These observations support the conclusion that dislocation termination at the surface and expansion of the step spiral lead to the macroscopic defects observed.

Overberg, Mark E.; Cederberg, Jeffrey George

2010-09-01T23:59:59.000Z

440

Matching Government Needs with Energy Efficient Fuel Cells | Department of  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergy HealthComments MEMA: CommentsEnergyResidential EnergyMatch Pumps

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

Matching National Laboratory Needs with Energy Efficient Fuel Cells |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergy HealthComments MEMA: CommentsEnergyResidential EnergyMatch

442

Mapping Diffuse Seismicity for Geothermal Reservoir Management with Matched Field Processing  

Broader source: Energy.gov [DOE]

Project objective: to detect and locate more microearthquakes observed during EGS operations using the matched field processing (MFP) technique.

443

A superconducting-nanowire 3-terminal electronic device  

E-Print Network [OSTI]

In existing superconducting electronic systems, Josephson junctions play a central role in processing and transmitting small-amplitude electrical signals. However, Josephson-junction-based devices have a number of limitations including: (1) sensitivity to magnetic fields, (2) limited gain, (3) inability to drive large impedances, and (4) difficulty in controlling the junction critical current (which depends sensitively on sub-Angstrom-scale thickness variation of the tunneling barrier). Here we present a nanowire-based superconducting electronic device, which we call the nanocryotron (nTron), that does not rely on Josephson junctions and can be patterned from a single thin film of superconducting material with conventional electron-beam lithography. The nTron is a 3-terminal, T-shaped planar device with a gain of ~20 that is capable of driving impedances of more than 100 k{\\Omega}, and operates in typical ambient magnetic fields at temperatures of 4.2K. The device uses a localized, Joule-heated hotspot formed in the gate to modulate current flow in a perpendicular superconducting channel. We have characterized the nTron, matched it to a theoretical framework, and applied it both as a digital logic element in a half-adder circuit, and as a digital amplifier for superconducting nanowire single-photon detectors pulses. The nTron has immediate applications in classical and quantum communications, photon sensing and astronomy, and its performance characteristics make it compatible with existing superconducting technologies. Furthermore, because the hotspot effect occurs in all known superconductors, we expect the design to be extensible to other materials, providing a path to digital logic, switching, and amplification in high-temperature superconductors.

Adam N. McCaughan; Karl K. Berggren

2014-03-25T23:59:59.000Z

444

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

445

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

446

A Nonparametric Matching Method for Covariate Adjustment with Application to Economic Evaluation  

E-Print Network [OSTI]

A Nonparametric Matching Method for Covariate Adjustment with Application to Economic Evaluation of propensity score and Mahalanobis distance matching. We apply Genetic Matching to an economic evaluation and nonparametric methods; observational stud- ies; health economic evaluation #12;1 Introduction Progress has been

Sekhon, Jasjeet S.

447

The Balance-Sample Size Frontier in Matching Methods for Causal Inference  

E-Print Network [OSTI]

The Balance-Sample Size Frontier in Matching Methods for Causal Inference Gary King Christopher defining and showing how to calculate the matching frontier as the set of matching solutions with maximum solutions from the frontier for analysis in one step without iteration. The main difficulty in this strategy

448

The Balance-Sample Size Frontier in Matching Methods for Causal Inference1  

E-Print Network [OSTI]

The Balance-Sample Size Frontier in Matching Methods for Causal Inference1 Gary King2 Institute: easier & more powerful · Estimate the (n-imbalance) "matching frontier" 2 / 55 #12;Overview · Problem-hoc checks · Solution: easier & more powerful · Estimate the (n-imbalance) "matching frontier" · Imbalance

449

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

450

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.

Lin, Peter T. (East Brunswick, NJ)

1985-01-01T23:59:59.000Z

451

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

452

Surface-Micromachined Microfluidic Devices  

DOE Patents [OSTI]

Microfluidic devices are disclosed which can be manufactured using surface-micromachining. These devices utilize an electroosmotic force or an electromagnetic field to generate a flow of a fluid in a microchannel that is lined, at least in part, with silicon nitride. Additional electrodes can be provided within or about the microchannel for separating particular constituents in the fluid during the flow based on charge state or magnetic moment. The fluid can also be pressurized in the channel. The present invention has many different applications including electrokinetic pumping, chemical and biochemical analysis (e.g. based on electrophoresis or chromatography), conducting chemical reactions on a microscopic scale, and forming hydraulic actuators. Microfluidic devices are disclosed which can be manufactured using surface-micromachining. These devices utilize an electroosmotic force or an electromagnetic field to generate a flow of a fluid in a microchannel that is lined, at least in part, with silicon nitride. Additional electrodes can be provided within or about the microchannel for separating particular constituents in the fluid during the flow based on charge state or magnetic moment. The fluid can also be pressurized in the channel. The present invention has many different applications including electrokinetic pumping, chemical and biochemical analysis (e.g. based on electrophoresis or chromatography), conducting chemical reactions on a microscopic scale, and forming hydraulic actuators.

Galambos, Paul C. (Albuquerque, NM); Okandan, Murat (Albuquerque, NM); Montague, Stephen (Albuquerque, NM); Smith, James H. (Redmond, WA); Paul, Phillip H. (Livermore, CA); Krygowski, Thomas W. (Coutlandt Manor, NY); Allen, James J. (Albuquerque, NM); Nichols, Christopher A. (Hauppauge, NY); Jakubczak, II, Jerome F. (Rio Rancho, NM)

2004-09-28T23:59:59.000Z

453

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

454

Interdigitated photovoltaic power conversion device  

DOE Patents [OSTI]

A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact grid of one cell to the back contact grid of an adjacent cell at the top surface of the device.

Ward, James Scott (Englewood, CO); Wanlass, Mark Woodbury (Golden, CO); Gessert, Timothy Arthur (Conifer, CO)

1999-01-01T23:59:59.000Z

455

In situ biofilm coupon device  

DOE Patents [OSTI]

An apparatus is disclosed for characterization of in-situ microbial biofilm populations in subsurface groundwater. The device permits biofilm-forming microorganisms to adhere to packing material while emplaced in a groundwater strata, so that the packing material can be later analyzed for quantity and type of microorganisms, growth rate, and nutrient requirements. 3 figs.

Peyton, B.M.; Truex, M.J.

1997-06-24T23:59:59.000Z

456

Interdigitated photovoltaic power conversion device  

DOE Patents [OSTI]

A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact grid of one cell to the back contact grid of an adjacent cell at the top surface of the device. 15 figs.

Ward, J.S.; Wanlass, M.W.; Gessert, T.A.

1999-04-27T23:59:59.000Z

457

Aerosol can waste disposal device  

DOE Patents [OSTI]

Disclosed is a device for removing gases and liquid from containers. The ice punctures the bottom of a container for purposes of exhausting gases and liquid from the container without their escaping into the atmosphere. The device includes an inner cup or cylinder having a top portion with an open end for receiving a container and a bottom portion which may be fastened to a disposal or waste container in a substantially leak-proof manner. A piercing device is mounted in the lower portion of the inner cylinder for puncturing the can bottom placed in the inner cylinder. An outer cylinder having an open end and a closed end fits over the top portion of the inner cylinder in telescoping engagement. A force exerted on the closed end of the outer cylinder urges the bottom of a can in the inner cylinder into engagement with the piercing device in the bottom of the inner cylinder to form an opening in the can bottom, thereby permitting the contents of the can to enter the disposal container.

O'Brien, Michael D. (Las Vegas, NV); Klapperick, Robert L. (Las Vegas, NV); Bell, Chris (Las Vegas, NV)

1993-01-01T23:59:59.000Z

458

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

SciTech Connect (OSTI)

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

459

A Critical Appraisal of NLO+PS Matching Methods  

SciTech Connect (OSTI)

In this publication, uncertainties in and differences between the MC{at}NLO and POWHEG methods for matching next-to-leading order QCD calculations with parton showers are discussed. Implementations of both algorithms within the event generator SHERPA are employed to assess the impact on a representative selection of observables. In the MC{at}NLO approach a phase space restriction has been added to subtraction and parton shower, which allows to vary in a transparent way the amount of non-singular radiative corrections that are exponentiated. Effects on various observables are investigated, using the production of a Higgs boson in gluon fusion, with or without an associated jet, as a benchmark process. The case of H+jet production is presented for the first time in an NLO+PS matched simulation. Uncertainties due to scale choices and non-perturbative effects are explored in the production of W{sup {+-}} and Z bosons in association with a jet. Corresponding results are compared to data from the Tevatron and LHC experiments.

Hoeche, Stefan; /SLAC; Krauss, Frank; Schonherr, Marek; /Durham U., IPPP; Siegert, Frank; /Freiburg U.

2012-03-19T23:59:59.000Z

460

Procedure for matching synfuel users with potential suppliers. Final report  

SciTech Connect (OSTI)

A procedure has been developed for matching prospective users and producers of synthetic fuels. The matching procedure, which involves a hierarchical screening process, is designed to assist OFC in: locating a supplier for a firm that wishes to obtain synthetic fuel exemption (Fuel Use Act); determining whether the fuel supplier proposed by a petitioner is technically and economically capable of meeting the petitioner's needs; and assisting the Synthetic Fuels Corporation in evaluating potential markets for synthetic fuels. Application of the screening procedure resulted in the identification of one or more candidates for supplying synthetic fuel to each of the prospective users. In this report the development of the screening procedure is described. Chapter 1 contains a detailed description of the seven screens; Chapter 2 describes the development of the hierarchical procedure for applying the screens to each synthetic fuels project; Chapter 3 describes the modification of the screening procedure for low and medium Btu gas; Chapter 4 describes the application of the procedure. Appendix A is a list of references used in developing the procedure; Appendix B is a detailed listing of proposed and ongoing synthetic fuel projects.

None

1981-09-26T23:59:59.000Z

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.


461

Symbolic Dynamics in a Matching Labour Market Model  

E-Print Network [OSTI]

In this paper we apply the techniques of symbolic dynamics to the analysis of a labor market which shows large volatility in employment flows. In a recent paper, Bhattacharya and Bunzel \\cite{BB} have found that the discrete time version of the Pissarides-Mortensen matching model can easily lead to chaotic dynamics under standard sets of parameter values. To conclude about the existence of chaotic dynamics in the numerical examples presented in the paper, the Li-Yorke theorem or the Mitra sufficient condition were applied which seems questionable because they may lead to misleading conclusions. Moreover, in a more recent version of the paper, Bhattacharya and Bunzel \\cite{BB1} present new results in which chaos is completely removed from the dynamics of the model. Our paper explores the matching model so interestingly developed by the authors with the following objectives in mind: (i) to show that chaotic dynamics may still be present in the model for standard parameter values; (ii) to clarify some open questions raised by the authors in \\cite{BB}, by providing a rigorous proof of the existence of chaotic dynamics in the model through the computation of topological entropy in a symbolic dynamics setting.

Diana A. Mendes; Vivaldo M. Mendes; J. Sousa Ramos

2006-08-01T23:59:59.000Z

462

Multi-junction, monolithic solar cell using low-band-gap materials lattice matched to GaAs or Ge  

DOE Patents [OSTI]

A multi-junction, monolithic, photovoltaic solar cell device is provided for converting solar radiation to photocurrent and photovoltage with improved efficiency. The solar cell device comprises a plurality of semiconductor cells, i.e., active p/n junctions, connected in tandem and deposited on a substrate fabricated from GaAs or Ge. To increase efficiency, each semiconductor cell is fabricated from a crystalline material with a lattice constant substantially equivalent to the lattice constant of the substrate material. Additionally, the semiconductor cells are selected with appropriate band gaps to efficiently create photovoltage from a larger portion of the solar spectrum. In this regard, one semiconductor cell in each embodiment of the solar cell device has a band gap between that of Ge and GaAs. To achieve desired band gaps and lattice constants, the semiconductor cells may be fabricated from a number of materials including Ge, GaInP, GaAs, GaInAsP, GaInAsN, GaAsGe, BGaInAs, (GaAs)Ge, CuInSSe, CuAsSSe, and GaInAsNP. To further increase efficiency, the thickness of each semiconductor cell is controlled to match the photocurrent generated in each cell. To facilitate photocurrent flow, a plurality of tunnel junctions of low-resistivity material are included between each adjacent semiconductor cell. The conductivity or direction of photocurrent in the solar cell device may be selected by controlling the specific p-type or n-type characteristics for each active junction.

Olson, Jerry M. (Lakewood, CO); Kurtz, Sarah R. (Golden, CO); Friedman, Daniel J. (Lakewood, CO)

2001-01-01T23:59:59.000Z

463

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

464

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

465

Matching Federal Government EnergyMatching Federal Government Energy Needs with Energy Efficient Fuel CellsNeeds with Energy Efficient Fuel Cells  

E-Print Network [OSTI]

1 Matching Federal Government EnergyMatching Federal Government Energy Needs with Energy Efficient Fuel CellsNeeds with Energy Efficient Fuel Cells Keith A SpitznagelKeith A Spitznagel Senior VP Buildings & Facilities · 5 Kilowatts to Megawatts Speciality vehicles & Material handling · 1 to 50

466

US DOE & USFCC Fuel Cells Meeting:US DOE & USFCC Fuel Cells Meeting: Matching Federal Government Energy NeedsMatching Federal Government Energy Needs  

E-Print Network [OSTI]

Energy NeedsMatching Federal Government Energy Needs with Energy Efficient Fuel Cellswith Energy;Federal GovernmentFederal Government Energy NeedsEnergy Needs US DOE & USFCC Fuel Cells Meeting 7 4US DOE & USFCC Fuel Cells Meeting:US DOE & USFCC Fuel Cells Meeting: Matching Federal Government

467

Recombination device for storage batteries  

DOE Patents [OSTI]

A recombination device including a gas-tight enclosure connected to receive the discharge gases from a rechargeable storage battery. Catalytic material for the recombination of hydrogen and oxygen to form water is supported within the enclosure. The enclosure is sealed from the atmosphere by a liquid seal including two vertical chambers interconnected with an inverted U-shaped overflow tube. The first chamber is connected at its upper portion to the enclosure and the second chamber communicates at its upper portion with the atmosphere. If the pressure within the enclosure differs as overpressure or vacuum by more than the liquid level, the liquid is forced into one of the two chambers and the overpressure is vented or the vacuum is relieved. The recombination device also includes means for returning recombined liquid to the battery and for absorbing metal hydrides.

Kraft, H.; Ledjeff, K.

1984-01-01T23:59:59.000Z

468

Recombination device for storage batteries  

DOE Patents [OSTI]

A recombination device including a gas-tight enclosure connected to receive he discharge gases from a rechargeable storage battery. Catalytic material for the recombination of hydrogen and oxygen to form water is supported within the enclosure. The enclosure is sealed from the atmosphere by a liquid seal including two vertical chambers interconnected with an inverted U-shaped overflow tube. The first chamber is connected at its upper portion to the enclosure and the second chamber communicates at its upper portion with the atmosphere. If the pressure within the enclosure differs as overpressure or vacuum by more than the liquid level, the liquid is forced into one of the two chambers and the overpressure is vented or the vacuum is relieved. The recombination device also includes means for returning recombined liquid to the battery and for absorbing metal hydrides.

Kraft, Helmut (Liederbach, DE); Ledjeff, Konstantin (Bad Krozingen, DE)

1985-01-01T23:59:59.000Z

469

Variable ratio regenerative braking device  

DOE Patents [OSTI]

Disclosed is a regenerative braking device (10) for an automotive vehicle. The device includes an energy storage assembly (12) having a plurality of rubber rollers (26, 28) mounted for rotation between an input shaft (36) and an output shaft (42), clutches (38, 46) and brakes (40, 48) associated with each shaft, and a continuously variable transmission (22) connectable to a vehicle drivetrain and to the input and output shafts by the respective clutches. The rubber rollers are torsionally stressed to accumulate energy from the vehicle when the input shaft is clutched to the transmission while the brake on the output shaft is applied, and are torsionally relaxed to deliver energy to the vehicle when the output shaft is clutched to the transmission while the brake on the input shaft is applied. The transmission ratio is varied to control the rate of energy accumulation and delivery for a given rotational speed of the vehicle drivetrain.

Hoppie, Lyle O. (Birmingham, MI)

1981-12-15T23:59:59.000Z

470

Neutron-absorber release device  

DOE Patents [OSTI]

A resettable device is provided for supporting an object, sensing when an environment reaches a critical temperature and releasing the object when the critical temperature is reached. It includes a flexible container having a material inside with a melting point at the critical temperature. The object's weight is supported by the solid material which gives rigidity to the container until the critical temperature is reached at which point the material in the container melts. The flexible container with the now fluid material inside has insufficient strength to support the object which is thereby released. Biasing means forces the container back to its original shape so that when the temperature falls below the melting temperature the material again solidifies, and the object may again be supported by the device.

VAN Erp, Jan B. (Hinsdale, IL); Kimont, Edward L. (Evergreen Park, IL)

1976-01-01T23:59:59.000Z

471

Nanowire structures and electrical devices  

DOE Patents [OSTI]

The present invention provides structures and devices comprising conductive segments and conductance constricting segments of a nanowire, such as metallic, superconducting or semiconducting nanowire. The present invention provides structures and devices comprising conductive nanowire segments and conductance constricting nanowire segments having accurately selected phases including crystalline and amorphous states, compositions, morphologies and physical dimensions, including selected cross sectional dimensions, shapes and lengths along the length of a nanowire. Further, the present invention provides methods of processing nanowires capable of patterning a nanowire to form a plurality of conductance constricting segments having selected positions along the length of a nanowire, including conductance constricting segments having reduced cross sectional dimensions and conductance constricting segments comprising one or more insulating materials such as metal oxides.

Bezryadin, Alexey (Champaign, IL); Remeika, Mikas (Urbana, IL)

2010-07-06T23:59:59.000Z

472

Encapsulant materials and associated devices  

DOE Patents [OSTI]

Compositions suitable for use as encapsulants are described. The inventive compositions include a high molecular weight polymeric material, a curing agent, an inorganic compound, and a coupling agent. Optional elements include adhesion promoting agents, colorants, antioxidants, and UV absorbers. The compositions have desirable diffusivity properties, making them suitable for use in devices in which a substantial blocking of moisture ingress is desired, such as photovoltaic (PV) modules.

Kempe, Michael D (Littleton, CO); Thapa, Prem (Lima, OH)

2012-05-22T23:59:59.000Z

473

Encapsulant materials and associated devices  

DOE Patents [OSTI]

Compositions suitable for use as encapsulants are described. The inventive compositions include a high molecular weight polymeric material, a curing agent, an inorganic compound, and a coupling agent. Optional elements include adhesion promoting agents, colorants, antioxidants, and UV absorbers. The compositions have desirable diffusivity properties, making them suitable for use in devices in which a substantial blocking of moisture ingress is desired, such as photovoltaic (PV) modules.

Kempe, Michael D (Littleton, CO); Thapa, Prem (Lima, OH)

2011-03-08T23:59:59.000Z

474

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

475

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

476

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. (Champaign, IL); Nuzzo, Ralph G. (Champaign, IL); Meitl, Matthew (Raleigh, NC); Ko, Heung Cho (Urbana, IL); Yoon, Jongseung (Urbana, IL); Menard, Etienne (Durham, NC); Baca, Alfred J. (Urbana, IL)

2011-04-26T23:59:59.000Z

477

Implementation for simplifying Bluetooth device connection methods  

E-Print Network [OSTI]

This thesis provides a way for users to easily add and remove devices to secure groups, allowing for a more intuitive way of making connections between devices. These groups allow users to seamlessly make connections between ...

Wan, Tehyih Debbie, 1981-

2004-01-01T23:59:59.000Z

478

Rapid prototyping method for a microfluidics device  

E-Print Network [OSTI]

The product design process can be described as a number of steps taken to turn an idea into a reality. One particular design process of creating a microfluidics device was studied and analyzed. A device containing channels ...

Klauber, Kameron L

2012-01-01T23:59:59.000Z

479

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

480

Multi-reflective acoustic wave device  

DOE Patents [OSTI]

An acoustic wave device, which utilizes multiple localized reflections of acoustic wave for achieving an infinite impulse response while maintaining high tolerance for dampening effects, is disclosed. The device utilized a plurality of electromechanically significant electrodes disposed on most of the active surface. A plurality of sensors utilizing the disclosed acoustic wave mode device are also described.

Andle, Jeffrey C.

2006-02-21T23:59:59.000Z

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.


481

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

482

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

483

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

484

Sensor device and methods for using same  

DOE Patents [OSTI]

A sensor device and method of employment is provided. More specifically, a sensor device adapted to detect, identify and/or measure a chemical and/or physical characteristic upon placement of the device into an environment, especially a liquid medium for which monitoring is sought is provided.

Rothgeb, Timothy Michael; Gansle, Kristina Marie; Joyce, Jonathan Livingsto; Jordan, James Madison; Rohwer, Tedd Addison; Lockhart, Randal Ray; Smith, Christopher Lawrence; Trinh, Toan; Cipollone, Mark Gary

2005-10-25T23:59:59.000Z

485

Organic electrophosphorescence device having interfacial layers  

SciTech Connect (OSTI)

Techniques are described for forming an organic light emitting diode device with improved device efficiency. Materials having at least one energy level that is similar to those of a phosphorescent light emitting material in the diode are incorporated into the device to directly inject holes or electrons to the light emitting material.

Choulis, Stelios A. (San Jose, CA); Mathai, Mathew (Santa Clara, CA); Choong, Vi-En (San Jose, CA); So, Franky (Gainesville, FL)

2010-08-10T23:59:59.000Z

486

Device Selection by a Personal Proxy Agent  

E-Print Network [OSTI]

Device Selection by a Personal Proxy Agent N. Hadibi, K. El-khatib, Eric Z. Zhang, Ken Chan, G. v user to access communication devices currently present in his Personal Area Network (PAN) Performs PreferencesDevice Capability An example Scenario: Connecting Alice and Bob w/o a Personal Proxy Internet Home

von Bochmann, Gregor

487

The Simplicity Device: Your Personal Mobile Representative  

E-Print Network [OSTI]

The Simplicity Device: Your Personal Mobile Representative Giovanni Bartolomeo1, Francesca Martire1 mobile phone that stores and handles personal information about the user. The Simplicity Device can be connected (e.g. via Bluetooth) to several other devices thus allowing personalization of services

488

SECURITY FOR WIRELESS NETWORKS AND DEVICES  

E-Print Network [OSTI]

connections. Users of handheld devices such as personal digital assis tants (PDAs) and cell phones can synMarch 2003 SECURITY FOR WIRELESS NETWORKS AND DEVICES Shirley Radack, Editor, Computer Security organizations and users have found that wireless communications and devices are convenient, flexible, and easy

489

Manual authentication for wireless devices Christian Gehrmann  

E-Print Network [OSTI]

is to examine how these services might best be achieved for personal wireless-enabled devices. Using the terminology of Stajano [12], the problem is that of securely `imprinting' a personal device. That is, suppose a user has two wireless-enabled devices, e.g. a mobile phone and a Personal Digital Assistant (PDA

Mitchell, Chris

490

THE FIRST MEASUREMENT OF THE ADIABATIC INDEX IN THE SOLAR CORONA USING TIME-DEPENDENT SPECTROSCOPY OF HINODE/EIS OBSERVATIONS  

SciTech Connect (OSTI)

We use observations of a slow magnetohydrodynamic wave in the corona to determine for the first time the value of the effective adiabatic index, using data from the Extreme-ultraviolet Imaging Spectrometer on board Hinode. We detect oscillations in the electron density, using the CHIANTI atomic database to perform spectroscopy. From the time-dependent wave signals from multiple spectral lines the relationship between relative density and temperature perturbations is determined, which allows in turn to measure the effective adiabatic index to be {gamma}{sub eff} = 1.10 {+-} 0.02. This confirms that the thermal conduction along the magnetic field is very efficient in the solar corona. The thermal conduction coefficient is measured from the phase lag between the temperature and density, and is shown to be compatible with Spitzer conductivity.

Van Doorsselaere, Tom; Wardle, Nick; Jansari, Kishan; Verwichte, Erwin; Nakariakov, Valery M. [CFSA, Physics Department, University of Warwick, Coventry CV4 7AL (United Kingdom); Del Zanna, Giulio, E-mail: Tom.VanDoorsselaere@wis.kuleuven.BE [DAMTP, Centre for Mathematical Sciences, Wilberforce Road, Cambridge CB3 0WA (United Kingdom)

2011-02-01T23:59:59.000Z

491

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

492

Demonstration of a Highly Efficient Solid Oxide Fuel Cell Power System Using Adiabatic Steam Reforming and Anode Gas Recirculation  

SciTech Connect (OSTI)

Solid oxide fuel cells (SOFC) are currently being developed for a wide variety of applications because of their high efficiency at multiple power levels. Applications for SOFCs encompass a large range of power levels including 1-2 kW residential combined heat and power applications, 100-250 kW sized systems for distributed generation and grid extension, and MW-scale power plants utilizing coal. This paper reports on the development of a highly efficient, small-scale SOFC power system operating on methane. The system uses adiabatic steam reforming of methane and anode gas recirculation to achieve high net electrical efficiency. The anode exit gas is recirculated and all of the heat and water required for the endothermic reforming reaction are provided by the anode gas emerging from the SOFC stack. Although the single-pass fuel utilization is only about 55%, because of the anode gas recirculation the overall fuel utilization is up to 93%. The demonstrated system achieved gross power output of 1650 to 2150 watts with a maximum net LHV efficiency of 56.7% at 1720 watts. Overall system efficiency could be further improved to over 60% with use of properly sized blowers.

Powell, Michael R.; Meinhardt, Kerry D.; Sprenkle, Vincent L.; Chick, Lawrence A.; Mcvay, Gary L.

2012-05-01T23:59:59.000Z

493

Construction of Energy Functions for Lattice Heteropolymer Models: A Case Study in Constraint Satisfaction Programming and Adiabatic Quantum Optimization  

E-Print Network [OSTI]

Optimization problems associated with the interaction of linked particles are at the heart of polymer science, protein folding and other important problems in the physical sciences. In this review we explain how to recast these problems as constraint satisfaction problems such as linear programming, maximum satisfiability, and pseudo-boolean optimization. By encoding problems this way, one can leverage substantial insight and powerful solvers from the computer science community which studies constraint programming for diverse applications such as logistics, scheduling, artificial intelligence, and circuit design. We demonstrate how to constrain and embed lattice heteropolymer problems using several strategies. Each strikes a unique balance between number of constraints, complexity of constraints, and number of variables. Finally, we show how to reduce the locality of couplings in these energy functions so they can be realized as Hamiltonians on existing quantum annealing machines. We intend that this review be used as a case study for encoding related combinatorial optimization problems in a form suitable for adiabatic quantum optimization.

Ryan Babbush; Alejandro Perdomo-Ortiz; Bryan O'Gorman; William Macready; Alán Aspuru-Guzik

2013-06-11T23:59:59.000Z

494

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

495

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

496

Assistive Devices for the Home  

E-Print Network [OSTI]

, replacing or modifying conventional knobs. The lever handle makes opening and closing doors easier. Some handles glow in the dark. a71 Pneumatic lift cushion. Helps raise one from a sitting to a standing position. The lift cushion is portable and can be used... called or emer- gency numbers can be programmed to dial with one button. a71 Telephone ring alerter. When a phone and lamp are plugged into the device, the lamp will flash with each ring of the phone. a71 Television remote control with large but- tons...

Harris, Janie

2002-01-31T23:59:59.000Z

497

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

498

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

499

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

500

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