Sample records for range gate spacing

  1. Short range, ultra-wideband radar with high resolution swept range gate

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-05-26T23:59:59.000Z

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control.

  2. Short range, ultra-wideband radar with high resolution swept range gate

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-05-26T23:59:59.000Z

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with a typical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. 14 figs.

  3. Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-01-01T23:59:59.000Z

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with atypical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. Techniques are used to reduce clutter in the receive signal, such as decoupling the receive and transmit cavities by placing a space between them, using conductive or radiative damping elements on the cavities, and using terminating plates on the sides of the openings.

  4. Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-06-30T23:59:59.000Z

    A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with atypical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. Techniques are used to reduce clutter in the receive signal, such as decoupling the receive and transmit cavities by placing a space between them, using conductive or radiative damping elements on the cavities, and using terminating plates on the sides of the openings. 20 figs.

  5. Compressed Gated Range Sensing Grigorios Tsagkatakisa, Arnaud Woiselleb, George Tzagkarakisc,

    E-Print Network [OSTI]

    Tsakalides, Panagiotis

    emitting diode (LED), and an imaging sensor in order to generate a 2D depth map of a scene. Time. INTRODUCTION Active Range Imaging systems employ an active illumination source, typically a laser or a light

  6. Laser-Ranging Long Baseline Differential Atom Interferometers for Space

    E-Print Network [OSTI]

    Chiow, Sheng-wey; Yu, Nan

    2015-01-01T23:59:59.000Z

    High sensitivity differential atom interferometers are promising for precision measurements in science frontiers in space, including gravity field mapping for Earth science studies and gravitational wave detection. We propose a new configuration of twin atom interferometers connected by a laser ranging interferometer (LRI-AI) to provide precise information of the displacements between the two AI reference mirrors and a means to phase-lock the two independent interferometer lasers over long distances, thereby further enhancing the feasibility of long baseline differential atom interferometers. We show that a properly implemented LRI-AI can achieve equivalent functionality to the conventional differential atom interferometer measurement system. LRI-AI isolates the laser requirements for atom interferometers and for optical phase readout between distant locations, thus enabling optimized allocation of available laser power within a limited physical size and resource budget. A unique aspect of LRI-AI also enables...

  7. Mercury Surface, Space Environment, Geochemistry, and Ranging Mission

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    ·Carnegie Institution of Washington ·NASA Goddard Space Flight Center ·University of Michigan ·Southwest's atmosphere generated? Does Mercury have ice at its poles? Combining an ultraviolet spectrometer and infrared McClintock Other organizations involved: ·The Johns Hopkins University Applied Physics Laboratory

  8. Y-12 to help create fuel for NASA's long-range space exploration...

    National Nuclear Security Administration (NNSA)

    help create fuel for NASA's long-range space exploration missions | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the...

  9. Space-Efficient Multi-Dimensional Range Marek Karpinski and Yakov Nekrich

    E-Print Network [OSTI]

    Eckmiller, Rolf

    -dimensional range reporting queries in O(log log U + (log log n)3 + k) time and uses O(n log n) space, where U(logd-2 n + k) time and uses O(n logd-2+ n) space for an arbitrary constant > 0. Recently, Nekrich [11 queries in O(logd-3 n/(log log n)d-5 + k) time and uses O(n logd-2+ n) space for d > 3. See Table 1

  10. Determination of Ranged Sets of Design Specifications by Incorporating Design Space Heterogeneity

    E-Print Network [OSTI]

    Chen, Wei

    Huibin Liu BD Medical Systems Sandy, UT 84070 Wei Chen1 Integrated Design Automation Laboratory (IDEAL design attributes. These high-level specifications serve as a starting point and are cascaded to guide1 Determination of Ranged Sets of Design Specifications by Incorporating Design Space Heterogeneity

  11. Optical NAND gate

    SciTech Connect (OSTI)

    Skogen, Erik J. (Albuquerque, NM); Raring, James (Goleta, CA); Tauke-Pedretti, Anna (Albuquerque, NM)

    2011-08-09T23:59:59.000Z

    An optical NAND gate is formed from two pair of optical waveguide devices on a substrate, with each pair of the optical waveguide devices consisting of an electroabsorption modulator and a photodetector. One pair of the optical waveguide devices is electrically connected in parallel to operate as an optical AND gate; and the other pair of the optical waveguide devices is connected in series to operate as an optical NOT gate (i.e. an optical inverter). The optical NAND gate utilizes two digital optical inputs and a continuous light input to provide a NAND function output. The optical NAND gate can be formed from III-V compound semiconductor layers which are epitaxially deposited on a III-V compound semiconductor substrate, and operates at a wavelength in the range of 0.8-2.0 .mu.m.

  12. Optical XOR gate

    DOE Patents [OSTI]

    Vawter, G. Allen

    2013-11-12T23:59:59.000Z

    An optical XOR gate is formed as a photonic integrated circuit (PIC) from two sets of optical waveguide devices on a substrate, with each set of the optical waveguide devices including an electroabsorption modulator electrically connected in series with a waveguide photodetector. The optical XOR gate utilizes two digital optical inputs to generate an XOR function digital optical output. The optical XOR gate can be formed from III-V compound semiconductor layers which are epitaxially deposited on a III-V compound semiconductor substrate, and operates at a wavelength in the range of 0.8-2.0 .mu.m.

  13. Optical NOR gate

    DOE Patents [OSTI]

    Skogen, Erik J. (Albuquerque, NM); Tauke-Pedretti, Anna (Albuquerque, NM)

    2011-09-06T23:59:59.000Z

    An optical NOR gate is formed from two pair of optical waveguide devices on a substrate, with each pair of the optical waveguide devices consisting of an electroabsorption modulator electrically connected in series with a waveguide photodetector. The optical NOR gate utilizes two digital optical inputs and a continuous light input to provide a NOR function digital optical output. The optical NOR gate can be formed from III-V compound semiconductor layers which are epitaxially deposited on a III-V compound semiconductor substrate, and operates at a wavelength in the range of 0.8-2.0 .mu.m.

  14. CHARACTERIZATION OF DISTURBANCES IN THE SPACE ENVIRONMENT FOR AUTONOMOUS CLOSE-RANGE RENDEZVOUS OF COOPERATIVE ROBOTS

    E-Print Network [OSTI]

    Wiens, Gloria J.

    , Department of Mechanical and Aerospace Engineering, Space, Automation, and Manufacturing Mechanisms for the vehicle performing the services (chaser) to rendezvous with the vehicle being serviced (target will be based on the Artificial Potential Function Guidance (APFG)6 . II. SYSTEM DYNAMICS Each vehicle

  15. Looking at Transistor Gate Oxide Formation in Real Time

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

    Looking at Transistor Gate Oxide Formation in Real Time Print The oxide gate layer is critical to every transistor, and present-day layer thicknesses are in the 10-20 range (1-2...

  16. Definitions Numbered Space

    E-Print Network [OSTI]

    Behmer, Spencer T.

    Definitions · Numbered Space ­ a single space marked with a number and reserved for a single permit 24/7 · Unnumbered Space ­ a space which can be used by any customer allowed to park in that lot. High Low Average Question 4: If I buy a staff permit for an UNNUMBERED* space in a non-gated surface

  17. Advanced insulated gate bipolar transistor gate drive

    DOE Patents [OSTI]

    Short, James Evans (Monongahela, PA); West, Shawn Michael (West Mifflin, PA); Fabean, Robert J. (Donora, PA)

    2009-08-04T23:59:59.000Z

    A gate drive for an insulated gate bipolar transistor (IGBT) includes a control and protection module coupled to a collector terminal of the IGBT, an optical communications module coupled to the control and protection module, a power supply module coupled to the control and protection module and an output power stage module with inputs coupled to the power supply module and the control and protection module, and outputs coupled to a gate terminal and an emitter terminal of the IGBT. The optical communications module is configured to send control signals to the control and protection module. The power supply module is configured to distribute inputted power to the control and protection module. The control and protection module outputs on/off, soft turn-off and/or soft turn-on signals to the output power stage module, which, in turn, supplies a current based on the signal(s) from the control and protection module for charging or discharging an input capacitance of the IGBT.

  18. Cardiac gated ventilation

    SciTech Connect (OSTI)

    Hanson, C.W. III [Hospital of the Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. Anesthesia; Hoffman, E.A. [Univ. of Iowa College of Medicine, Iowa City, IA (United States). Div. of Physiologic Imaging

    1995-12-31T23:59:59.000Z

    There are several theoretic advantages to synchronizing positive pressure breaths with the cardiac cycle, including the potential for improving distribution of pulmonary and myocardial blood flow and enhancing cardiac output. The authors evaluated the effects of synchronizing respiration to the cardiac cycle using a programmable ventilator and electron beam CT (EBCT) scanning. The hearts of anesthetized dogs were imaged during cardiac gated respiration with a 50 msec scan aperture. Multi slice, short axis, dynamic image data sets spanning the apex to base of the left ventricle were evaluated to determine the volume of the left ventricular chamber at end-diastole and end-systole during apnea, systolic and diastolic cardiac gating. The authors observed an increase in cardiac output of up to 30% with inspiration gated to the systolic phase of the cardiac cycle in a non-failing model of the heart.

  19. Extended range chemical sensing apparatus

    DOE Patents [OSTI]

    Hughes, R.C.; Schubert, W.K.

    1994-01-18T23:59:59.000Z

    An apparatus is described for sensing chemicals over extended range of concentrations. In particular, first and second sensors each having separate, but overlapping ranges for sensing concentrations of hydrogen are provided. Preferably, the first sensor is a MOS solid state device wherein the metal electrode or gate is a nickel alloy. The second sensor is a chemiresistor comprising a nickel alloy. 6 figures.

  20. Golden Gate Park Marina Blvd.

    E-Print Network [OSTI]

    Derisi, Joseph

    St. Eureka S.VanNessAve. M arket St. Broadway St. To Golden Gate Bridge H ow ard St. Folsom St. Bryant St. 10 North / Golden Gate Bridge 2. Exit I­280 North toward Downtown San Francisco 3. Exit Mariposa St. toward80 280 Presidio Golden Gate Park Lincoln Park Buena Vista Park 101 101 101 101 1 1 Marina Blvd. Bay

  1. Space

    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 ConchasPassiveSubmittedStatus Tom Fletcher,Future |Carlos Valencia NamedPolicySowmyaSpace

  2. Simple trapped-ion architecture for high-fidelity Toffoli gates

    SciTech Connect (OSTI)

    Borrelli, Massimo [CM-DTC, SUPA, EPS/School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Mazzola, Laura [Turku Centre for Quantum Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turun yliopisto (Finland); School of Mathematics and Physics, Queen's University, BT7 1NN Belfast (United Kingdom); Paternostro, Mauro [School of Mathematics and Physics, Queen's University, BT7 1NN Belfast (United Kingdom); Maniscalco, Sabrina [CM-DTC, SUPA, EPS/School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Turku Centre for Quantum Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turun yliopisto (Finland)

    2011-07-15T23:59:59.000Z

    We discuss a simple architecture for a quantum toffoli gate implemented using three trapped ions. The gate, which, in principle, can be implemented with a single laser-induced operation, is effective under rather general conditions and is strikingly robust (within any experimentally realistic range of values) against dephasing, heating, and random fluctuations of the Hamiltonian parameters. We provide a full characterization of the unitary and noise-affected gate using three-qubit quantum process tomography.

  3. Penn State DOE GATE Program

    SciTech Connect (OSTI)

    Anstrom, Joel

    2012-08-31T23:59:59.000Z

    The Graduate Automotive Technology Education (GATE) Program at The Pennsylvania State University (Penn State) was established in October 1998 pursuant to an award from the U.S. Department of Energy (U.S. DOE). The focus area of the Penn State GATE Program is advanced energy storage systems for electric and hybrid vehicles.

  4. Gate-teleportation-based blind quantum computation

    E-Print Network [OSTI]

    Mear M. R. Koochakie

    2014-12-25T23:59:59.000Z

    Blind quantum computation (BQC) is a model in which a computation is performed on a server by a client such that the server is kept blind about the input, the algorithm, and the output of the computation. Here we layout a general framework for BQC which, unlike the previous BQC models, does not constructed on specific computational model. A main ingredient of our construction is gate teleportation. We demonstrate that our framework can be straightforwardly implemented on circuit-based models as well as measurement-based models of quantum computation. We illustrate our construction by showing that universal BQC is possible on correlation-space measurement-based quantum computation models.

  5. Developing Language Processing Components with GATE

    E-Print Network [OSTI]

    Maynard, Diana

    Developing Language Processing Components with GATE (a User Guide) For GATE version 3 beta 1 (July.3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.4 [D] Get Started

  6. Ultrafast gating of proximity-focused microchannel-plate intensifiers

    SciTech Connect (OSTI)

    Lundy, A.S.; Iverson, A.E.

    1982-01-01T23:59:59.000Z

    Proximity-focused, microchannel-plate (MCP) image intensifiers have been used at Los Alamos for many years to allow single frame film and video exposure times in the range of 2.5 to 10 ns. There is now a program to reduce gating times to < 1 ns. This paper reviews previous work and the problems in achieving good resolution with gating times of < 1 ns. The key problems involve applying fast electrical gating signals to the tube elements. We present computer modeling studies of the combined tube, tube connection, and pulser system and show that low photocathode surface resistivity must be obtained to permit fast gating between the photocathode and the MCP input. We discuss ways of making low-resistivity S20 photocathodes, using gallium arsenide photocathodes, and various means of gating the tubes. A variety of pulser designs are being experimentally evaluated including spark gaps, avalanche transistors, Krytron tubes with sharpening gaps, step recovery diodes, and photoconductive elements (PCEs). The results of these studies are presented. Because of the high capacitances involved in most gating schemes, the tube connection geometry must be of low-impedance design, and our solution is presented. Finally, ways of testing these high-speed camera systems are discussed.

  7. Non-Hermitian quantum gates are more common than Hermitian quantum gates

    E-Print Network [OSTI]

    Anirban Pathak

    2013-09-16T23:59:59.000Z

    Most of the frequently used quantum gates (e.g., NOT, Hadamard, CNOT, SWAP, Toffoli, Fredkin and Pauli gates) are self-inverse (Hermitian). However, with a simple minded argument it is established that most of the allowed quantum gates are non-Hermitian (non-self-inverse). It is also shown that the % of non-Hermitian gates increases with the dimension. For example, 58.33% of the 2-qubit gates, 98.10% of the 3-qubit gates and 99.99% of the 4-qubit gates are non-Hermitian. As classical reversible gates are essentially permutation gates so the above statistics is strictly valid for classical reversible gates. Further, since Hermiticity is not of much interest in context of the classical reversible gate, hence the result implies that most of the allowed classical reversible gates are non-self-inverse.

  8. Controlling attosecond electron dynamics by phase-stabilized polarization gating

    E-Print Network [OSTI]

    Loss, Daniel

    LETTERS Controlling attosecond electron dynamics by phase-stabilized polarization gating I. J. SOLA the signature of a single return of the electron wavepacket over a large range of energies. This temporally (low energy) and cut-off (high energy) harmonics, specific focusing conditions ensure that only

  9. Thermosensitive gating effect and selective gas adsorption in a porous coordination nanocage

    SciTech Connect (OSTI)

    Zhao, Dan; Yuan, Daqiang; Krishna, Rajamani; van Baten, Jasper M.; Zhou, Hong-Cai (TAM); (U. Amsterdam)

    2010-10-22T23:59:59.000Z

    A porous coordination nanocage functionalized with 24 triisopropylsilyl groups exhibits a remarkable thermosensitive gate opening phenomenon and demonstrates a molecular sieving effect at a certain temperature range, which can be used for gas separation purposes.

  10. Thermosensitive gating effect and selective gas adsorption in a porous coordination nanocage

    SciTech Connect (OSTI)

    Zhao, Dan; Yuan, Daqiang; Krishna, Rajamani; van Baten, Jasper M; Zhou, Hong-Cai

    2010-01-01T23:59:59.000Z

    A porous coordination nanocage functionalized with 24 triisopropylsilyl groups exhibits a remarkable thermosensitive gate opening phenomenon and demonstrates a molecular sieving effect at a certain temperature range, which can be used for gas separation purposes.

  11. Single qubit, two qubit gates and no signalling principle

    E-Print Network [OSTI]

    Indranil Chakrabarty

    2009-01-31T23:59:59.000Z

    In this work we investigate that whether one can construct single and two qubit gates for arbitrary quantum states from the principle of no signalling. We considered the problem for Pauli gates, Hadamard gate, C-Not gate.

  12. Composite two-qubit quantum gates

    E-Print Network [OSTI]

    Svetoslav S. Ivanov; Nikolay V. Vitanov

    2015-03-30T23:59:59.000Z

    We design composite two-qubit gates, based on the Ising-type interaction. The gates are robust against systematic errors in the qubits' interaction strength and the gate's implementation time. We give composite sequences, which cancel the error up to 6th order, and give a method to achieve even higher accuracy. Our sequences can compensate either relative or absolute errors. For relative error compensation the number of the ingredient gates grows linearly with the desired accuracy, while for absolute compensation only two gates are required to achieve infinitely accurate gates. We also consider an ion-trap implementation of our composite gates, where our sequences achieve simultaneous cancellation of the error in both the pulse area and the detuning.

  13. Light beam range finder

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-01-01T23:59:59.000Z

    A "laser tape measure" for measuring distance which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%.

  14. Light beam range finder

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-06-16T23:59:59.000Z

    A ``laser tape measure`` for measuring distance is disclosed which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%. 7 figs.

  15. Looking at Transistor Gate Oxide Formation in Real Time

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

    Gate Oxide Formation in Real Time Looking at Transistor Gate Oxide Formation in Real Time Print Wednesday, 25 June 2008 00:00 The oxide gate layer is critical to every transistor,...

  16. Quantum logic gates for superconducting resonator qudits

    SciTech Connect (OSTI)

    Strauch, Frederick W. [Williams College, Williamstown, Massachusetts 01267 (United States)

    2011-11-15T23:59:59.000Z

    We study quantum information processing using superpositions of Fock states in superconducting resonators as quantum d-level systems (qudits). A universal set of single and coupled logic gates is theoretically proposed for resonators coupled by superconducting circuits of Josephson junctions. These gates use experimentally demonstrated interactions and provide an attractive route to quantum information processing using harmonic oscillator modes.

  17. Automatically closing swing gate closure assembly

    DOE Patents [OSTI]

    Chang, Shih-Chih (Richland, WA); Schuck, William J. (Richland, WA); Gilmore, Richard F. (Kennewick, WA)

    1988-01-01T23:59:59.000Z

    A swing gate closure assembly for nuclear reactor tipoff assembly wherein the swing gate is cammed open by a fuel element or spacer but is reliably closed at a desired closing rate primarily by hydraulic forces in the absence of a fuel charge.

  18. GATE Center of Excellence at UAB in Lightweight Materials for...

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

    GATE Center of Excellence at UAB in Lightweight Materials for Automotive Applications GATE Center of Excellence at UAB in Lightweight Materials for Automotive Applications 2011 DOE...

  19. PENN STATE DOE GRADUATE AUTOMOTIVE TECHNOLOGY EDUCATION (GATE...

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

    PENN STATE DOE GRADUATE AUTOMOTIVE TECHNOLOGY EDUCATION (GATE) PROGRAM FOR PENN STATE DOE GRADUATE AUTOMOTIVE TECHNOLOGY EDUCATION (GATE) PROGRAM FOR 2009 DOE Hydrogen Program and...

  20. GATE Center of Excellence at UAB in Lightweight Materials for...

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

    & Publications GATE Center of Excellence at UAB in Lightweight Materials for Automotive Applications GATE Center of Excellence at UAB in Lightweight Materials for...

  1. Vehicle Technologies Office Merit Review 2014: GATE Center of...

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

    GATE Center of Excellence at UAB for Lightweight Materials and Manufacturing for Automotive, Truck and Mass Transit. ti026vaidya2014p.pdf More Documents & Publications GATE...

  2. Penn State DOE Graduate Automotive Technology Education (Gate...

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

    DOE Graduate Automotive Technology Education (Gate) Program for In-Vehicle, High-Power Energy Storage Systems Penn State DOE Graduate Automotive Technology Education (Gate)...

  3. University of Illinois at Urbana-Champaign's GATE Center for...

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

    Urbana-Champaign's GATE Center for Advanced Automotive Bio-Fuel Combustion Engines University of Illinois at Urbana-Champaign's GATE Center for Advanced Automotive Bio-Fuel...

  4. GATE Center of Excellence at UAB in Lightweight Materials for...

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

    vaidya.pdf More Documents & Publications GATE Center of Excellence at UAB in Lightweight Materials for Automotive Applications GATE Center of Excellence at UAB in Lightweight...

  5. Gating of Permanent Molds for ALuminum Casting

    SciTech Connect (OSTI)

    David Schwam; John F. Wallace; Tom Engle; Qingming Chang

    2004-03-30T23:59:59.000Z

    This report summarizes a two-year project, DE-FC07-01ID13983 that concerns the gating of aluminum castings in permanent molds. The main goal of the project is to improve the quality of aluminum castings produced in permanent molds. The approach taken was determine how the vertical type gating systems used for permanent mold castings can be designed to fill the mold cavity with a minimum of damage to the quality of the resulting casting. It is evident that somewhat different systems are preferred for different shapes and sizes of aluminum castings. The main problems caused by improper gating are entrained aluminum oxide films and entrapped gas. The project highlights the characteristic features of gating systems used in permanent mold aluminum foundries and recommends gating procedures designed to avoid common defects. The study also provides direct evidence on the filling pattern and heat flow behavior in permanent mold castings.

  6. TABLE I. AUTOMOTIVE TEMPERATURE RANGES [1] In-transmission 150-200C

    E-Print Network [OSTI]

    Tolbert, Leon M.

    electronics modules in HEVs. I. INTRODUCTION Previously reported high-temperature automotive electronic-voltage integrated gate driver circuit for automotive applications. In all power electronic circuits, a gate driverTABLE I. AUTOMOTIVE TEMPERATURE RANGES [1] In-transmission 150-200°C On-engine 150-200°C On Wheel

  7. A Stochastic Approach for the Analysis of Fault Trees with Priority AND Gates

    E-Print Network [OSTI]

    Han, Jie

    dependency gate PAND priority AND gate SEQ sequence enforcing gate WSP warm spare gate CSP cold spare gate time [1]. Failures can be disastrous for systems such as chemical plants, nuclear reactors, airplane gates that include the warm spare gate (WSP) and cold spare gate (CSP), and the functional dependency

  8. Locking apparatus for gate valves

    DOE Patents [OSTI]

    Fabyan, Joseph (Livermore, CA); Williams, Carl W. (Manteca, CA)

    1988-01-01T23:59:59.000Z

    A locking apparatus for fluid operated valves having a piston connected to the valve actuator which moves in response to applied pressure within a cylinder housing having a cylinder head, a catch block is secured to the piston, and the cylinder head incorporates a catch pin. Pressure applied to the cylinder to open the valve moves the piston adjacent to the cylinder head where the catch pin automatically engages the catch block preventing futher movement of the piston or premature closure of the valve. Application of pressure to the cylinder to close the valve, retracts the catch pin, allowing the valve to close. Included are one or more selector valves, for selecting pressure application to other apparatus depending on the gate valve position, open or closed, protecting such apparatus from damage due to premature closing caused by pressure loss or operational error.

  9. Crystal Structure of the Mammalian GIRK2 KplusChannel and Gating Regulation by G Proteins PIP2 and Sodium

    SciTech Connect (OSTI)

    M Whorton; R MacKinnon

    2011-12-31T23:59:59.000Z

    G protein-gated K{sup +} channels (Kir3.1--Kir3.4) control electrical excitability in many different cells. Among their functions relevant to human physiology and disease, they regulate the heart rate and govern a wide range of neuronal activities. Here, we present the first crystal structures of a G protein-gated K{sup +} channel. By comparing the wild-type structure to that of a constitutively active mutant, we identify a global conformational change through which G proteins could open a G loop gate in the cytoplasmic domain. The structures of both channels in the absence and presence of PIP{sub 2} suggest that G proteins open only the G loop gate in the absence of PIP{sub 2}, but in the presence of PIP{sub 2} the G loop gate and a second inner helix gate become coupled, so that both gates open. We also identify a strategically located Na{sup +} ion-binding site, which would allow intracellular Na{sup +} to modulate GIRK channel activity. These data provide a structural basis for understanding multiligand regulation of GIRK channel gating.

  10. Optical Determination of Gate--Tunable Bandgap in Bilayer Graphene

    SciTech Connect (OSTI)

    Zhang, Yuanbo; Tang, Tsung-Ta; Girit, Caglar; Hao, Zhao; Martin, Michael C.; Zettl, Alex; Crommie, Michael F.; Shen, Y. Ron; Wang, Feng

    2009-08-11T23:59:59.000Z

    The electronic bandgap is an intrinsic property of semiconductors and insulators that largely determines their transport and optical properties. As such, it has a central role in modern device physics and technology and governs the operation of semiconductor devices such as p-n junctions, transistors, photodiodes and lasers. A tunable bandgap would be highly desirable because it would allow great flexibility in design and optimization of such devices, in particular if it could be tuned by applying a variable external electric field. However, in conventional materials, the bandgap is fixed by their crystalline structure, preventing such bandgap control. Here we demonstrate the realization of a widely tunable electronic bandgap in electrically gated bilayer graphene. Using a dual-gate bilayer graphene field-effect transistor (FET) and infrared microspectroscopy, we demonstrate a gate-controlled, continuously tunable bandgap of up to 250 meV. Our technique avoids uncontrolled chemical doping and provides direct evidence of a widely tunable bandgap -- spanning a spectral range from zero to mid-infrared -- that has eluded previous attempts. Combined with the remarkable electrical transport properties of such systems, this electrostatic bandgap control suggests novel nanoelectronic and nanophotonic device applications based on graphene.

  11. Graduate Automotive Technology Education (GATE) Center

    SciTech Connect (OSTI)

    Jeffrey Hodgson; David Irick

    2005-09-30T23:59:59.000Z

    The Graduate Automotive Technology Education (GATE) Center at the University of Tennessee, Knoxville has completed its sixth year of operation. During this period the Center has involved thirteen GATE Fellows and ten GATE Research Assistants in preparing them to contribute to advanced automotive technologies in the center's focus area: hybrid drive trains and control systems. Eighteen GATE students have graduated, and three have completed their course work requirements. Nine faculty members from three departments in the College of Engineering have been involved in the GATE Center. In addition to the impact that the Center has had on the students and faculty involved, the presence of the center has led to the acquisition of resources that probably would not have been obtained if the GATE Center had not existed. Significant industry interaction such as internships, equipment donations, and support for GATE students has been realized. The value of the total resources brought to the university (including related research contracts) exceeds $4,000,000. Problem areas are discussed in the hope that future activities may benefit from the operation of the current program.

  12. Quantitative Assessment of Range Fluctuations in Charged Particle Lung Irradiation

    SciTech Connect (OSTI)

    Mori, Shinichiro [Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA (United States)], E-mail: shinshin@nirs.go.jp; Wolfgang, John; Lu, H.-M.; Schneider, Robert; Choi, Noah C.; Chen, George T.Y. [Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA (United States)

    2008-01-01T23:59:59.000Z

    Purpose: Water equivalent path length (WEL) variations due to respiration can change the range of a charged particle beam and result in beam overshoot to critical organs or beam undershoot to tumor. We have studied range fluctuations by analyzing four-dimensional computed tomography data and quantitatively assessing potential beam overshoot. Methods and Materials: The maximal intensity volume is calculated by combining the gross tumor volume contours at each respiratory phase in the four-dimensional computed tomography study. The first target volume calculates the maximal intensity volume for the entire respiratory cycle (internal target volume [ITV]-radiotherapy [RT]), and the second target volume is the maximal intensity volume corresponding to gated RT (gated-RT, {approx}30% phase window around exhalation). A compensator at each respiratory phase is calculated. Two 'composite' compensators for ITV-RT and gated-RT are then designed by selecting the minimal compensator depth at the respective respiratory phase. These compensators are then applied to the four-dimensional computed tomography data to estimate beam penetration. Analysis metrics include range fluctuation and overshoot volume, both as a function of gantry angle. We compared WEL fluctuations observed in treating the ITV-RT versus gated-RT in 11 lung patients. Results: The WEL fluctuations were <21.8 mm-WEL and 9.5 mm-WEL for ITV-RT and gated-RT, respectively for all patients. Gated-RT reduced the beam overshoot volume by approximately a factor of four compared with ITV-RT. Such range fluctuations can affect the efficacy of treatment and result in an excessive dose to a distal critical organ. Conclusion: Time varying range fluctuation analysis provides information useful for determining appropriate patient-specific treatment parameters in charged particle RT. This analysis can also be useful for optimizing planning and delivery.

  13. Digital gate pulse generator for cycloconverter control

    DOE Patents [OSTI]

    Klein, Frederick F. (Monroeville, PA); Mutone, Gioacchino A. (Pleasant Hills, PA)

    1989-01-01T23:59:59.000Z

    The present invention provides a digital gate pulse generator which controls the output of a cycloconverter used for electrical power conversion applications by determining the timing and delivery of the firing pulses to the switching devices in the cycloconverter. Previous gate pulse generators have been built with largely analog or discrete digital circuitry which require many precision components and periodic adjustment. The gate pulse generator of the present invention utilizes digital techniques and a predetermined series of values to develop the necessary timing signals for firing the switching device. Each timing signal is compared with a reference signal to determine the exact firing time. The present invention is significantly more compact than previous gate pulse generators, responds quickly to changes in the output demand and requires only one precision component and no adjustments.

  14. Gate potential control of nanofluidic devices

    E-Print Network [OSTI]

    Le Coguic, Arnaud

    2005-01-01T23:59:59.000Z

    The effect of an external gate potential control on the nanofluidic nanochannels was experimentally investigated in this work. Like in the field effect transistors (FET) in microelectronics, molecular transport in ...

  15. Yuanmingyuan East Gate of Peking University

    E-Print Network [OSTI]

    Gu, Jin

    Dingxiangyuan Cafeteria SupermarketI Parking 32 Northeast Gate C Building C Swimming Hall East Playground and New Energy Technology 32 Institute of Education Schools & Departments A Foreign Student Affairs

  16. GaTe semiconductor for radiation detection

    DOE Patents [OSTI]

    Payne, Stephen A. (Castro Valley, CA); Burger, Arnold (Nashville, TN); Mandal, Krishna C. (Ashland, MA)

    2009-06-23T23:59:59.000Z

    GaTe semiconductor is used as a room-temperature radiation detector. GaTe has useful properties for radiation detectors: ideal bandgap, favorable mobilities, low melting point (no evaporation), non-hygroscopic nature, and availability of high-purity starting materials. The detector can be used, e.g., for detection of illicit nuclear weapons and radiological dispersed devices at ports of entry, in cities, and off shore and for determination of medical isotopes present in a patient.

  17. Gate fidelity fluctuations and quantum process invariants

    SciTech Connect (OSTI)

    Magesan, Easwar; Emerson, Joseph [Institute for Quantum Computing and Department of Applied Mathematics, University of Waterloo, Waterloo, Ontario N2L 3G1 (Canada); Blume-Kohout, Robin [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

    2011-07-15T23:59:59.000Z

    We characterize the quantum gate fidelity in a state-independent manner by giving an explicit expression for its variance. The method we provide can be extended to calculate all higher order moments of the gate fidelity. Using these results, we obtain a simple expression for the variance of a single-qubit system and deduce the asymptotic behavior for large-dimensional quantum systems. Applications of these results to quantum chaos and randomized benchmarking are discussed.

  18. Paying the Toll: A Political History of the Golden Gate Bridge and Highway District, 1923-1971

    E-Print Network [OSTI]

    Dyble, Amy Louise Nelson

    2003-01-01T23:59:59.000Z

    Gate: the Construction of the Golden Gate Bridge and HighwayCommittee on Golden Gate Bridge and Highway District,versus the Golden Gate Bridge . . . . . . . . . . . . . . .

  19. Unique Functional Properties of a Sensory Neuronal P2X ATP-Gated Channel from Zebrafish

    E-Print Network [OSTI]

    Séguéla, Philippe

    of native P2X receptor channels evokes a fast inward current carried by mono- valent and calcium ions in a broad range of calcium- dependent signaling events from the neurogenic control of smooth muscle, and a cysteine-rich extracellular loop resembles that of recently discovered proton-gated channels (Wald- mann

  20. Voltage-gated Ion Channels and Gating Modifier Toxins William A. Catterall,* Sandrine Cestle,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ;2 Abstract Voltage-gated sodium, calcium, and potassium channels generate electrical signals required and a pore loop. Their pores are formed by the S5/S6 segments and the pore loop between them and are gated and participate in calcium signaling pathways in nonexcitable cells. Because of their importance in many aspects

  1. The Defeat of the Golden Gate Authority: Regional Planning and Local Power

    E-Print Network [OSTI]

    Dyble, Louise Nelson

    2012-01-01T23:59:59.000Z

    Regional Politics and the Golden Gate Bridge, Philadelphia:Politics and the Golden Gate Bridge, won the Abel WolmanBridge and the Golden Gate Bridge. Moreover, interregional

  2. Heralded quantum gates with integrated error detection in optical cavitites

    E-Print Network [OSTI]

    J. Borregaard; P. Kómár; E. M. Kessler; A. S. Sørensen; M. D. Lukin

    2015-01-05T23:59:59.000Z

    We propose and analyze heralded quantum gates between qubits in optical cavities. They employ an auxiliary qubit to report if a successful gate occurred. In this manner, the errors, which would have corrupted a deterministic gate, are converted into a non-unity probability of success: once successful the gate has a much higher fidelity than a similar deterministic gate. Specifically, we describe that a heralded , near-deterministic controlled phase gate (CZ-gate) with the conditional error arbitrarily close to zero and the success probability that approaches unity as the cooperativity of the system, C, becomes large. Furthermore, we describe an extension to near-deterministic N- qubit Toffoli gate with a favorable error scaling. These gates can be directly employed in quantum repeater networks to facilitate near-ideal entanglement swapping, thus greatly speeding up the entanglement distribution.

  3. Coherent motion of stereocilia assures the concerted gating of hair-cell transduction channels

    E-Print Network [OSTI]

    Andrei S. Kozlov; Thomas Risler; A. J. Hudspeth

    2009-02-16T23:59:59.000Z

    The hair cell's mechanoreceptive organelle, the hair bundle, is highly sensitive because its transduction channels open over a very narrow range of displacements. The synchronous gating of transduction channels also underlies the active hair-bundle motility that amplifies and tunes responsiveness. The extent to which the gating of independent transduction channels is coordinated depends on how tightly individual stereocilia are constrained to move as a unit. Using dual-beam interferometry in the bullfrog's sacculus, we found that thermal movements of stereocilia located as far apart as a bundle's opposite edges display high coherence and negligible phase lag. Because the mechanical degrees of freedom of stereocilia are strongly constrained, a force applied anywhere in the hair bundle deflects the structure as a unit. This feature assures the concerted gating of transduction channels that maximizes the sensitivity of mechanoelectrical transduction and enhances the hair bundle's capacity to amplify its inputs.

  4. Engineering integrated photonics for heralded quantum gates

    E-Print Network [OSTI]

    T. Meany; D. N. Biggerstaff; M. A. Broome; A. Fedrizzi; M. Delanty; A. Gilchrist; G. D. Marshall; M. J. Steel; A. G. White; M. J. Withford

    2015-02-11T23:59:59.000Z

    Scaling up linear-optics quantum computing will require multi-photon gates which are compact, phase-stable, exhibit excellent quantum interference, and have success heralded by the detection of ancillary photons. We investigate implementation of the optimal known gate design which meets these requirements: the Knill controlled-Z gate, implemented in integrated laser-written waveguide arrays. We show that device performance is more sensitive to the small deviations in the coupler reflectivity, arising due to the tolerance values of the fabrication method, than phase variations in the circuit. The mode fidelity was also shown to be less sensitive to reflectivity and phase errors than process fidelity. Our best device achieves a fidelity of 0.931+/-0.001 with the ideal 4x4 unitary circuit and a process fidelity of 0.680+/-0.005 with the ideal computational-basis process.

  5. Sandia National Laboratories: i-GATE

    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 MayAtmosphericNuclear Security Administration the1development Sandia,evaluatingfullhigher-performancestoragei-GATE ECIS and i-GATE:

  6. Effect of Oxygen on Ni-Silicided FUSI Metal Gate

    E-Print Network [OSTI]

    Yu, H.P.

    Continual evolution of the CMOS technology requires thinner gate dielectric to maintain high performance. However, when moving into the sub-65 nm CMOS generation, the traditional poly-Si gate approach cannot effectively ...

  7. abnormal sensorimotor gating: Topics by E-print Network

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

    double dots can be effectively tuned from weak to strong regime by both the in-plane plunger gates and back gate. All the relevant energy scales and parameters of the bilayer...

  8. GATE Center of Excellence at UAB for Lightweight Materials and...

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

    Constante (PhD candidate) and Samuel Jasper (PhD candidate) working on composite beams 9 Accomplishments and Progress: GATE Directly Funded Students (2005-2011) GATE SCHOLAR...

  9. Electroluminescence in ion gel gated organic polymer semiconductor transistors

    E-Print Network [OSTI]

    Bhat, Shrivalli

    2011-07-12T23:59:59.000Z

    This thesis reports the light emission in ion gel gated, thin film organic semiconductor transistors and investigates the light emission mechanism behind these devices. We report that ion gel gated organic polymer semiconductor transistors emit...

  10. Negative quantum capacitance in graphene nanoribbons with lateral gates

    E-Print Network [OSTI]

    Florian, Libisch

    Negative quantum capacitance in graphene nanoribbons with lateral gates R. Reiter1, , U. Derra2 , S numerical simulations of the capacitive coupling between graphene nanoribbons of various widths and gate electrodes in different configurations. We compare the influence of lateral metallic or graphene side gate

  11. Clustering of cyclic-nucleotide-gated channels in olfactory cilia

    E-Print Network [OSTI]

    French, Donald A.

    Clustering of cyclic-nucleotide-gated channels in olfactory cilia Richard J. Flannery* , Donald A channel clusters in olfactory cilia Key words: olfaction, receptor neuron, cyclic-nucleotide-gated channel of olfactory signal transduction, including a high density of cyclic-nucleotide-gated (CNG) channels. CNG

  12. Quantum Logic Gates using q-deformed Oscillators

    E-Print Network [OSTI]

    Debashis Gangopadhyay; Mahendra Nath Sinha Roy

    2006-07-14T23:59:59.000Z

    We show that the quantum logic gates, {\\it viz.} the single qubit Hadamard and Phase Shift gates, can also be realised using q-deformed angular momentum states constructed via the Jordan-Schwinger mechanism with two q-deformed oscillators. {\\it Keywords :} quantum logic gates ; q-deformed oscillators ; quantum computation {\\it PACS:} 03.67.Lx ; 02.20.Uw

  13. Accuracy and Consistency of Respiratory Gating in Abdominal Cancer Patients

    SciTech Connect (OSTI)

    Ge, Jiajia; Santanam, Lakshmi; Yang, Deshan [Department of Radiation Oncology, Washington University School of Medicine, St Louis, Missouri (United States)] [Department of Radiation Oncology, Washington University School of Medicine, St Louis, Missouri (United States); Parikh, Parag J., E-mail: pparikh@radonc.wustl.edu [Department of Radiation Oncology, Washington University School of Medicine, St Louis, Missouri (United States)

    2013-03-01T23:59:59.000Z

    Purpose: To evaluate respiratory gating accuracy and intrafractional consistency for abdominal cancer patients treated with respiratory gated treatment on a regular linear accelerator system. Methods and Materials: Twelve abdominal patients implanted with fiducials were treated with amplitude-based respiratory-gated radiation therapy. On the basis of daily orthogonal fluoroscopy, the operator readjusted the couch position and gating window such that the fiducial was within a setup margin (fiducial-planning target volume [f-PTV]) when RPM indicated “beam-ON.” Fifty-five pre- and post-treatment fluoroscopic movie pairs with synchronized respiratory gating signal were recorded. Fiducial motion traces were extracted from the fluoroscopic movies using a template matching algorithm and correlated with f-PTV by registering the digitally reconstructed radiographs with the fluoroscopic movies. Treatment was determined to be “accurate” if 50% of the fiducial area stayed within f-PTV while beam-ON. For movie pairs that lost gating accuracy, a MATLAB program was used to assess whether the gating window was optimized, the external-internal correlation (EIC) changed, or the patient moved between movies. A series of safety margins from 0.5 mm to 3 mm was added to f-PTV for reassessing gating accuracy. Results: A decrease in gating accuracy was observed in 44% of movie pairs from daily fluoroscopic movies of 12 abdominal patients. Three main causes for inaccurate gating were identified as change of global EIC over time (?43%), suboptimal gating setup (?37%), and imperfect EIC within movie (?13%). Conclusions: Inconsistent respiratory gating accuracy may occur within 1 treatment session even with a daily adjusted gating window. To improve or maintain gating accuracy during treatment, we suggest using at least a 2.5-mm safety margin to account for gating and setup uncertainties.

  14. Gate-controlled ultraviolet photo-etching of graphene edges

    SciTech Connect (OSTI)

    Mitoma, Nobuhiko; Nouchi, Ryo [Nanoscience and Nanotechnology Research Center, Osaka Prefecture University, Sakai, Osaka 599-8570 (Japan)] [Nanoscience and Nanotechnology Research Center, Osaka Prefecture University, Sakai, Osaka 599-8570 (Japan)

    2013-11-11T23:59:59.000Z

    The chemical reactivity of graphene under ultraviolet (UV) light irradiation is investigated under positive and negative gate electric fields. Graphene edges are selectively etched when negative gate voltages are applied while the reactivity is significantly suppressed for positive gate voltages. Oxygen adsorption onto graphene is significantly affected by the Fermi level of the final state achieved during previous electrical measurements. UV irradiation after negative-to-positive gate sweeps causes predominant oxygen desorption while UV irradiation after gate sweeps in the opposite direction causes etching of graphene edges.

  15. Classification of transversal gates in qubit stabilizer codes

    E-Print Network [OSTI]

    Jonas T. Anderson; Tomas Jochym-O'Connor

    2014-09-29T23:59:59.000Z

    This work classifies the set of diagonal gates that can implement a single or two-qubit transversal logical gate for qubit stabilizer codes. We show that individual physical gates on the underlying qubits that compose the code are restricted to have entries of the form $e^{i \\pi c/2^k}$ along their diagonal, resulting in a similarly restricted class of logical gates that can be implemented in this manner. Moreover, we show that all diagonal logical gates that can be implemented transversally by individual physical diagonal gates must belong to the Clifford hierarchy. Furthermore, we can use this result to prove a conjecture about transversal gates made by Zeng et al. in 2007.

  16. Arbitrary two-qubit computation in 23 elementary gates

    SciTech Connect (OSTI)

    Bullock, Stephen S.; Markov, Igor L. [Department of Mathematics, The University of Michigan, Ann Arbor, Michigan 48109-2122, USA (United States); Mathematical and Computational Sciences Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8910, USA (United States); Department of Electrical Engineering and Computer Science, The University of Michigan, 1301 Beal Avenue-EECS, Ann Arbor, Michigan 48109-2122, USA (United States)

    2003-07-01T23:59:59.000Z

    We address the problem of constructing quantum circuits to implement an arbitrary two-qubit quantum computation. We pursue circuits without ancilla qubits and as small a number of elementary quantum gates as possible. Our lower bound for worst-case optimal two-qubit circuits calls for at least 17 gates: 15 one-qubit rotations and 2 controlled-NOT (CNOT) gates. We also constructively prove a worst-case upper bound of 23 elementary gates, of which at most four (CNOT gates) entail multiqubit interactions. Our analysis shows that synthesis algorithms suggested in previous work, although more general, entail larger quantum circuits than ours in the special case of two qubits. One such algorithm has a worst case of 61 gates, of which 18 may be CNOT gates.

  17. Method for voltage-gated protein fractionation

    DOE Patents [OSTI]

    Hatch, Anson (Tracy, CA); Singh, Anup K. (Danville, CA)

    2012-04-24T23:59:59.000Z

    We report unique findings on the voltage dependence of protein exclusion from the pores of nanoporous polymer exclusion membranes. The pores are small enough that proteins are excluded from passage with low applied electric fields, but increasing the field enables proteins to pass through. The requisite field necessary for a change in exclusion is protein-specific with a correlation to protein size. The field-dependence of exclusion is important to consider for preconcentration applications. The ability to selectively gate proteins at exclusion membranes is also a promising means for manipulating and characterizing proteins. We show that field-gated exclusion can be used to selectively remove proteins from a mixture, or to selectively trap protein at one exclusion membrane in a series.

  18. Physics of gate leakage current in N-polar InAlN/GaN heterojunction field effect transistors

    SciTech Connect (OSTI)

    Goswami, Arunesh; Trew, Robert J.; Bilbro, Griff L. [ECE Department, Box 7911, North Carolina State University, Raleigh, North Carolina 27695-7911 (United States)

    2014-10-28T23:59:59.000Z

    A physics based model of the gate leakage current in N-polar InAlN/GaN heterojunction field effect transistors is demonstrated. The model is based on the space charge limited current flow dominated by the effects of deep traps in the InAlN surface layer. The model predicts accurately the gate-leakage measurement data of the N-polar InAlN/GaN device with InAlN cap layer. In the pinch-off state, the gate leakage current conduction through the surface of the device in the drain access region dominates the current flow through the two dimensional electron gas channel. One deep trap level and two levels of shallow traps are extracted by fitting the model results with measurement data.

  19. Space-QUEST: Experiments with quantum entanglement in space

    E-Print Network [OSTI]

    Rupert Ursin; Thomas Jennewein; Johannes Kofler; Josep M. Perdigues; Luigi Cacciapuoti; Clovis J. de Matos; Markus Aspelmeyer; Alejandra Valencia; Thomas Scheidl; Alessandro Fedrizzi; Antonio Acin; Cesare Barbieri; Giuseppe Bianco; Caslav Brukner; Jose Capmany; Sergio Cova; Dirk Giggenbach; Walter Leeb; Robert H. Hadfield; Raymond Laflamme; Norbert Lutkenhaus; Gerard Milburn; Momtchil Peev; Timothy Ralph; John Rarity; Renato Renner; Etienne Samain; Nikolaos Solomos; Wolfgang Tittel; Juan P. Torres; Morio Toyoshima; Arturo Ortigosa-Blanch; Valerio Pruneri; Paolo Villoresi; Ian Walmsley; Gregor Weihs; Harald Weinfurter; Marek Zukowski; Anton Zeilinger

    2008-06-05T23:59:59.000Z

    The European Space Agency (ESA) has supported a range of studies in the field of quantum physics and quantum information science in space for several years, and consequently we have submitted the mission proposal Space-QUEST (Quantum Entanglement for Space Experiments) to the European Life and Physical Sciences in Space Program. We propose to perform space-to-ground quantum communication tests from the International Space Station (ISS). We present the proposed experiments in space as well as the design of a space based quantum communication payload.

  20. 210 nature neuroscience volume 5 no 3 march 2002 Calcium entry into cells through voltage-gated Ca2+ channels

    E-Print Network [OSTI]

    Palczewski, Krzysztof

    voltage-gated Ca2+ channels initiates a wide range of cellular processes including protein phosphorylation, gene expression and neurotransmitter release1. Neuronal Ca2+ channels consist of a pore-forming 1 by neurotransmitters inhibits Cav2.1 and Cav2.2 channels, which mediate P/Q-type and N- type Ca2+ currents

  1. Wind retrieval capability of rotating, range-gated, fanbeam spaceborne scatterometer

    E-Print Network [OSTI]

    Stoffelen, Ad

    at different azimuth view-angles over the resolution cell, and inverting the backscatter model, a so-called geophysical model function (GMF), to extract the wind information using the azimuth anisotropy of the radar simulations and an investigation of advanced features such as multi-beam, dual-polarisation, dual- frequency

  2. An elementary optical gate for expanding entanglement web

    E-Print Network [OSTI]

    Toshiyuki Tashima; Sahin Kaya Ozdemir; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto

    2008-03-13T23:59:59.000Z

    We introduce an elementary optical gate for expanding polarization entangled W states, in which every pair of photons are entangled alike. The gate is composed of a pair of 50:50 beamsplitters and ancillary photons in the two-photon Fock state. By seeding one of the photons in an $n$-photon W state into this gate, we obtain an $(n+2)$-photon W state after post-selection. This gate gives a better efficiency and a simpler implementation than previous proposals for $\\rm W$-state preparation.

  3. Vehicle Technologies Office Merit Review 2014: GATE Center of...

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

    GATE Center of Excellence at UAB for Lightweight Materials and Manufacturing for Automotive, Truck and Mass Transit. lm081vaidya2014o.pdf More Documents & Publications...

  4. GATE Center of Excellence at UAB for Lightweight Materials and...

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

    at UAB for Lightweight Materials and Manufacturing for Automotive, Truck and Mass Transit GATE Center of Excellence at UAB for Lightweight Materials and Manufacturing for...

  5. High Temperature, High Voltage Fully Integrated Gate Driver Circuit

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

    temperature gate drive is being developed for use with future wide band gap (silicon carbide and gallium nitride) switching devices. * Universal drive that is capable of driving...

  6. PIA - Savannah River Nuclear Solution (SRNS) MedGate Occupational...

    Office of Environmental Management (EM)

    Occupational Health and Safety Medical System (OHS) (Includes the Drug and Alcohol Testing System (Assistant)) PIA - Savannah River Nuclear Solution (SRNS) MedGate...

  7. GATE Center of Excellence at UAB for Lightweight Materials and...

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

    Constante (PhD candidate) and Samuel Jasper (PhD candidate) working on composite beams GATE courses (some newly developed, some based on tailoring content in existing...

  8. Sandia National Laboratories: ECIS and i-GATE: Innovation Hub...

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

    support system to accelerate the commercialization of innovative technologies related to green transportation and clean energy. There are now eight i-GATE clients developing fuel...

  9. Gate Fidelities, Quantum Broadcasting, and Assessing Experimental Realization

    E-Print Network [OSTI]

    Hyang-Tag Lim; Young-Sik Ra; Yong-Su Kim; Yoon-Ho Kim; Joonwoo Bae

    2011-06-29T23:59:59.000Z

    We relate gate fidelities of experimentally realized quantum operations to the broadcasting property of their ideal operations, and show that the more parties a given quantum operation can broadcast to, the higher gate fidelities of its experimental realization are in general. This is shown by establishing the correspondence between two operational quantities, quantum state shareability and quantum broadcasting. This suggests that, to assess an experimental realization using gate fidelities, the worst case of realization such as noisy operations should be taken into account and then compared to obtained gate fidelities. In addition, based on the correspondence, we also translate results in quantum state shareability to their counterparts in quantum operations.

  10. Optical Determination of Gate--Tunable Bandgap in Bilayer Graphene

    E-Print Network [OSTI]

    Zhang, Yuanbo

    2010-01-01T23:59:59.000Z

    Tunable Bandgap in Bilayer Graphene Yuanbo Zhang* 1 , Tsung-gate-tunable bandgap in graphene bilayers with magnitude asbands. In two- dimensional graphene bilayers this bandgap

  11. Cavity-QED-based quantum phase gate

    E-Print Network [OSTI]

    Zubairy, M. Suhail; Kim, M.; Scully, Marlan O.

    2003-01-01T23:59:59.000Z

    are detuned by an amount D from the cavity mode 1, i.e., vbc5n11D . A quantum phase gate with a p phase shift is implemented if the atom in its ground state uc& passes through the cavity such that ~1! the detuning D is equal to g2, and ~2! the interaction...- lowing. The effective Hamiltonian for the interaction, in the di- pole and rotating-wave approximations, is H5H01H1 , ~3! where H05\

  12. David A Gates | Princeton Plasma Physics Lab

    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 DocumentationP-Series to UserProduct: CrudeOffice ofINL is aID Service FirstMeetingsA Gates

  13. Optical AND and NOT gates at 40 Gbps using electro-absorption modulator/photodiode pairs.

    SciTech Connect (OSTI)

    Tauke-Pedretti, Anna; Overberg, Mark E.; Skogen, Erik J.; Alford, Charles Fred; Sullivan, Charles Thomas; Vawter, Gregory Allen; Peake, Gregory Merwin; Torres, David L.

    2010-06-01T23:59:59.000Z

    We demonstrate an optical gate architecture using electro-absorption modulator/photodiode pairs to perform AND and NOT functions. Optical bandwidth for both gates reach 40 GHz. Also shown are AND gate waveforms at 40 Gbps.

  14. Space of Spaces

    E-Print Network [OSTI]

    Edward Anderson

    2014-11-30T23:59:59.000Z

    Wheeler emphasized the study of Superspace - the space of 3-geometries on a spatial manifold of fixed topology. This is a configuration space for GR; knowledge of configuration spaces is useful as regards dynamics and QM.In this Article I consider furthmore generalized configuration spaces to all levels within the conventional `equipped sets' paradigm of mathematical structure used in fundamental Theoretical Physics. This covers A) the more familiar issue of topology change in the sense of topological manifolds (tied to cobordisms), including via pinched manifolds. B) The less familiar issue of not regarding as fixed the yet deeper levels of structure: topological spaces themselves (and their metric space subcase), collections of subsets and sets. Isham has previously presented quantization schemes for a number of these. I consider some classical preliminaries for this program, aside from the most obvious (classical dynamics for each). Rather, I provide I) to all levels Relational and Background Independence criteria, which have Problem of Time facets as consequences. I demonstrate that many of these issues descend all the way down, whilst also documenting at which level the others cease to apply. II) Probability theory on configuration spaces. In fact such a stochastic treatment is how to further mathematize the hitherto fairly formal and sketchy subject of records theory (a type of formultion of quantum gravity). Along these lines I provide a number of further examples of records theories. This is in addition to Kendall's shape statistics being the example corresponding to relational mechanics models. To this example I now add 1) Cech cohomology, 2) Kendall's random sets, 3) the lattice of topologies on a fixed set. I finally consider 4) sheaves, both as a generalization of Cech cohomology and in connection to the study of stratified manifolds such as Superspace itself.

  15. Modeling gated neutron images of THD capsules

    SciTech Connect (OSTI)

    Wilson, Douglas Carl [Los Alamos National Laboratory; Grim, Gary P [Los Alamos National Laboratory; Tregillis, Ian L [Los Alamos National Laboratory; Wilke, Mark D [Los Alamos National Laboratory; Morgan, George L [Los Alamos National Laboratory; Loomis, Eric N [Los Alamos National Laboratory; Wilde, Carl H [Los Alamos National Laboratory; Oertel, John A [Los Alamos National Laboratory; Fatherley, Valerie E [Los Alamos National Laboratory; Clark, David D [Los Alamos National Laboratory; Schmitt, Mark J [Los Alamos National Laboratory; Merrill, Frank E [Los Alamos National Laboratory; Wang, Tai - Sen F [Los Alamos National Laboratory; Danly, Christopher R [Los Alamos National Laboratory; Batha, Steven H [Los Alamos National Laboratory; Patel, M [LLNL; Sepke, S [LLNL; Hatarik, R [LLNL; Fittinghoff, D [LLNL; Bower, D [LLNL; Marinak, M [LLNL; Munro, D [LLNL; Moran, M [LLNL; Hilko, R [NSTEC; Frank, M [LLNL; Buckles, R [NSTEC

    2010-01-01T23:59:59.000Z

    Time gating a neutron detector 28m from a NIF implosion can produce images at different energies. The brighter image near 14 MeV reflects the size and symmetry of the capsule 'hot spot'. Scattered neutrons, {approx}9.5-13 MeV, reflect the size and symmetry of colder, denser fuel, but with only {approx}1-7% of the neutrons. The gated detector records both the scattered neutron image, and, to a good approximation, an attenuated copy of the primary image left by scintillator decay. By modeling the imaging system the energy band for the scattered neutron image (10-12 MeV) can be chosen, trading off the decayed primary image and the decrease of scattered image brightness with energy. Modeling light decay from EJ399, BC422, BCF99-55, Xylene, DPAC-30, and Liquid A leads to a preference from BCF99-55 for the first NIF detector, but DPAC 30 and Liquid A would be preferred if incorporated into a system. Measurement of the delayed light from the NIF scintillator using implosions at the Omega laser shows BCF99-55 to be a good choice for down-scattered imaging at 28m.

  16. Sizing sliding gate valves for steam service

    SciTech Connect (OSTI)

    Bollinger, R. [Jordan Value, Cincinnati, OH (United States)

    1995-11-06T23:59:59.000Z

    Sliding gate valves have been used in thousands of applications during the past 40 yr. While steam control is a common application for these valves, thy are also used to control other gases and liquids. The sliding gate design provides straight-through flow, which minimizes turbulence, vibration, and noise. Seats are self-cleaning and self-lapping to provide a tight, long-lasting shutoff. A correctly sized valve is essential for accurate control. Valve size should be determined by service and system requirements, not by the size of the existing pipeline. Sizing a valve on the basis of pipeline size usually results in an oversized valve and poor control. Generally, regulator size is smaller than pipe size. Whenever complete information is known (inlet pressure, outlet pressure, or pressure drop, and required flow), determine the valve flow coefficient (C{sub v}) using the equations in ANSI/ISA S75.01 or a flow sizing chart. Tables of values for various types of valves are available from manufacturers. However, when complete system requirements are not known, valve oversizing is prevented by determining the design capacity of piping downstream from the valve. The valve should not be sized to pass more flow than the maximum amount the pipe can handle at a reasonable velocity. An example calculation is given.

  17. Transient modeling of thermionic space nuclear power systems

    E-Print Network [OSTI]

    Berge, Francoise M

    1991-01-01T23:59:59.000Z

    elements convert the thermal power generated by the core into electrical power to be supplied to the load. Some recent designs ol' space nuclear reactors investi- gate single loop systems operating with direct in-core thermionic conversion. CENTAR... CHAPTER I INTRODUCTION . Objectives and Methodology . . Thesis Organization Literature Review II CENTAR SIMULATION CODE FOR SPACE NUCLEAR POWER SYSTEMS III TOPAZ II SPACE NUCLEAR POWER SYSTEM. . . . . System Layout. Nuclear Core...

  18. A p-cell approach to integer gate sizing

    E-Print Network [OSTI]

    Doddannagari, Uday

    2009-05-15T23:59:59.000Z

    cell (p-cell) approach to the generation of layouts of standard gates is presented. The use of constant delay model for gate delay estimation is proposed which eliminates the need for maintaining huge volumes of delay tables in the standard cell library...

  19. A SIMULATION MODEL FOR FLOATING-GATE MOS SYNAPSE TRANSISTORS

    E-Print Network [OSTI]

    Diorio, Chris

    A SIMULATION MODEL FOR FLOATING-GATE MOS SYNAPSE TRANSISTORS Kambiz Rahimi, Chris Diorio, Cecilia, Seattle, Washington ABSTRACT We propose an empirical simulation model for p-channel floating-gate MOS and accurate simulation model for the synaptic devices, many of these circuits were designed using equation

  20. E-Print Network 3.0 - aluminum oxide gate Sample Search Results

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

    2 Charge Trapping Characteristics of SONOS Capacitors with Control Gates of Different Work Functions during ProgramErase Operations Summary: ABSTRACT The control gate...

  1. University of Illinois at Urbana-Champaigns GATE Center for...

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

    Urbana-Champaigns GATE Center for Advanced Automotive Bio-Fuel Combustion Engines University of Illinois at Urbana-Champaigns GATE Center for Advanced Automotive Bio-Fuel...

  2. University of Illinois at Urbana Champaigns GATE Center forAdvanced...

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

    Urbana Champaigns GATE Center forAdvanced Automotive Bio-Fuel Combustion Engines University of Illinois at Urbana Champaigns GATE Center forAdvanced Automotive Bio-Fuel...

  3. Paying the Toll: A Political History of the Golden Gate Bridge and Highway District, 1923-1971

    E-Print Network [OSTI]

    Dyble, Amy Louise Nelson

    2003-01-01T23:59:59.000Z

    Final Environmental Statement Golden Gate Bridge, HighwayGolden Gate Bridge Highway and Transportation District, Draft Environmental

  4. All-metallic electrically gated 2H-TaSe2 thin-film switches and logic circuits J. Renteria,1

    E-Print Network [OSTI]

    off, and the single-atom thickness of graphene leaves it susceptible to radiation damage.18 non-linear current-voltage characteristics, unusual optical response, and electrical gating at room radiation-hard all-metallic logic circuits. These results may open new application space for thin films

  5. Metal-gate-induced reduction of the interfacial layer in Hf oxide gate stacks

    SciTech Connect (OSTI)

    Goncharova, L. V.; Dalponte, M.; Gustafsson, T.; Celik, O.; Garfunkel, E.; Lysaght, P. S.; Bersuker, G. [Department of Physics and Astronomy, and Laboratory for Surface Modification, Rutgers University, 136 Frelinghuysen Rd., Piscataway, New Jersey 08854 (United States); Department of Chemistry and Chemical Biology, and Laboratory for Surface Modification, Rutgers University, 610 Taylor Rd., Piscataway, New Jersey 08854 (United States); SEMATECH, 2705 Montopolis Dr., Austin, Texas 78741 (United States)

    2007-03-15T23:59:59.000Z

    The properties of high-{kappa} metal oxide gate stacks are often determined in the final processing steps following dielectric deposition. We report here results from medium energy ion scattering and x-ray photoelectron spectroscopy studies of oxygen and silicon diffusion and interfacial layer reactions in multilayer gate stacks. Our results show that Ti metallization of HfO{sub 2}/SiO{sub 2}/Si stacks reduces the SiO{sub 2} interlayer and (to a more limited extent) the HfO{sub 2} layer. We find that Si atoms initially present in the interfacial SiO{sub 2} layer incorporate into the bottom of the high-{kappa} layer. Some evidence for Ti-Si interdiffusion through the high-{kappa} film in the presence of a Ti gate in the crystalline HfO{sub 2} films is also reported. This diffusion is likely to be related to defects in crystalline HfO{sub 2} films, such as grain boundaries. High-resolution transmission electron microscopy and corresponding electron energy loss spectroscopy scans show aggressive Ti-Si intermixing and oxygen diffusion to the outermost Ti layer, given high enough annealing temperature. Thermodynamic calculations show that the driving forces exist for some of the observed diffusion processes.

  6. A 200 C Universal Gate Driver Integrated Circuit for Extreme Environment Applications

    SciTech Connect (OSTI)

    Tolbert, Leon M [ORNL; Huque, Mohammad A [ORNL; Islam, Syed K [ORNL; Blalock, Benjamin J [ORNL

    2012-01-01T23:59:59.000Z

    High-temperature power converters (dc-dc, dc-ac, etc.) have enormous potential in extreme environment applications, including automotive, aerospace, geothermal, nuclear, and well logging. For successful realization of such high-temperature power conversion modules, the associated control electronics also need to perform at high temperature. This paper presents a silicon-on-insulator (SOI) based high-temperature gate driver integrated circuit (IC) incorporating an on-chip low-power temperature sensor and demonstrating an improved peak output current drive over our previously reported work. This driver IC has been primarily designed for automotive applications, where the underhood temperature can reach 200 C. This new gate driver prototype has been designed and implemented in a 0.8 {micro}m, 2-poly, and 3-metal bipolar CMOS-DMOS (Double-Diffused Metal-Oxide Semiconductor) on SOI process and has been successfully tested for up to 200 C ambient temperature driving a SiC MOSFET and a SiC normally-ON JFET. The salient feature of the proposed universal gate driver is its ability to drive power switches over a wide range of gate turn-ON voltages such as MOSFET (0 to 20 V), normally-OFF JFET (-7 to 3 V), and normally-ON JFET (-20 to 0 V). The measured peak output current capability of the driver is around 5 A and is thus capable of driving several power switches connected in parallel. An ultralow-power on-chip temperature supervisory circuit has also been integrated into the die to safeguard the driver circuit against excessive die temperature ({ge}220 C). This approach utilizes increased diode leakage current at higher temperature to monitor the die temperature. The power consumption of the proposed temperature sensor circuit is below 10 {micro}W for operating temperature up to 200 C.

  7. Systematic ranging and late warning asteroid impacts

    E-Print Network [OSTI]

    Farnocchia, D; Micheli, M

    2015-01-01T23:59:59.000Z

    We describe systematic ranging, an orbit determination technique especially suitable to assess the near-term Earth impact hazard posed by newly discovered asteroids. For these late warning cases, the time interval covered by the observations is generally short, perhaps a few hours or even less, which leads to severe degeneracies in the orbit estimation process. The systematic ranging approach gets around these degeneracies by performing a raster scan in the poorly-constrained space of topocentric range and range rate, while the plane of sky position and motion are directly tied to the recorded observations. This scan allows us to identify regions corresponding to collision solutions, as well as potential impact times and locations. From the probability distribution of the observation errors, we obtain a probability distribution in the orbital space and then estimate the probability of an Earth impact. We show how this technique is effective for a number of examples, including 2008 TC3 and 2014 AA, the only tw...

  8. Gated x-ray detector for the National Ignition Facility

    SciTech Connect (OSTI)

    Oertel, John A.; Aragonez, Robert; Archuleta, Tom; Barnes, Cris; Casper, Larry; Fatherley, Valerie; Heinrichs, Todd; King, Robert; Landers, Doug; Lopez, Frank; Sanchez, Phillip; Sandoval, George; Schrank, Lou; Walsh, Peter; Bell, Perry; Brown, Matt; Costa, Robert; Holder, Joe; Montelongo, Sam; Pederson, Neal [Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States); Lawrence Livermore National Laboratory, Livermore, California 94551-0808 (United States); VI Control Systems Ltd., Los Alamos, New Mexico 87544 (United States)

    2006-10-15T23:59:59.000Z

    Two new gated x-ray imaging cameras have recently been designed, constructed, and delivered to the National Ignition Facility in Livermore, CA. These gated x-Ray detectors are each designed to fit within an aluminum airbox with a large capacity cooling plane and are fitted with an array of environmental housekeeping sensors. These instruments are significantly different from earlier generations of gated x-ray images due, in part, to an innovative impedance matching scheme, advanced phosphor screens, pulsed phosphor circuits, precision assembly fixturing, unique system monitoring, and complete remote computer control. Preliminary characterization has shown repeatable uniformity between imaging strips, improved spatial resolution, and no detectable impedance reflections.

  9. RANGE DESIGN CRITERIA

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

    firing lanes. If possible, do not construct columns within the range. Design columns or beams to withstand local wind and seismic loads, and provide protective steel plate on the...

  10. Nanosecond Range Heating and Temperature Measurement on Thin Layers Experiment and Simulation

    E-Print Network [OSTI]

    Moritz, Werner

    Nanosecond Range Heating and Temperature Measurement on Thin Layers Experiment and Simulation W for sensitivity measurements, heating resistance and temperature sensor. Taking advantage of using the gate electrode for heating only the sensitive two layer system LaF3/Pt (thickness only 300 nm) has to be at high

  11. An Area Efficien Low Power High Speed S-Box Implementation Using Power-Gated PLA

    E-Print Network [OSTI]

    Ayers, Joseph

    An Area Efficien Low Power High Speed S-Box Implementation Using Power-Gated PLA Ho Joon Lee- sign of Rijndael S-Box for the SubByte transformation using power-gating and PLA design techniques arrays,VLSI General Terms Cryptography, Power Gate, Low Power Keywords AES, PLA, Power Gate, S-Box 1

  12. Parameter Mismatches, Chaos Synchronization and Fast Dynamic Logic Gates

    E-Print Network [OSTI]

    E. M. Shahverdiev

    2009-07-02T23:59:59.000Z

    By using chaos synchronization between non-identical multiple time delay semiconductor lasers with optoelectronic feedbacks, we demonstrate numerically how fast dynamic logic gates can be constructed. The results may be helpful to obtain a computational hardware with reconfigurable properties.

  13. Micro-mechanical logic for field produceable gate arrays

    E-Print Network [OSTI]

    Prakash, Manu

    2005-01-01T23:59:59.000Z

    A paradigm of micro-mechanical gates for field produceable logic is explored. A desktop manufacturing system is sought after which is capable of printing functional logic devices in the field. A logic scheme which induces ...

  14. Characterization of a gated fiber-optic-coupled detector for application in clinical electron beam dosimetry

    SciTech Connect (OSTI)

    Tanyi, James A.; Nitzling, Kevin D.; Lodwick, Camille J.; Huston, Alan L.; Justus, Brian L. [Department of Radiation Medicine, Oregon Health and Science University, Portland, Oregon 97239 (United States) and Department of Nuclear Engineering and Radiation Health Physics, Oregon State University, Corvallis, Oregon 97331 (United States); Department of Nuclear Engineering and Radiation Health Physics, Oregon State University, Corvallis, Oregon 97331 (United States); Optical Sciences Division, Naval Research Laboratory, Washington, DC 20375 (United States)

    2011-02-15T23:59:59.000Z

    Purpose: Assessment of the fundamental dosimetric characteristics of a novel gated fiber-optic-coupled dosimetry system for clinical electron beam irradiation. Methods: The response of fiber-optic-coupled dosimetry system to clinical electron beam, with nominal energy range of 6-20 MeV, was evaluated for reproducibility, linearity, and output dependence on dose rate, dose per pulse, energy, and field size. The validity of the detector system's response was assessed in correspondence with a reference ionization chamber. Results: The fiber-optic-coupled dosimetry system showed little dependence to dose rate variations (coefficient of variation {+-}0.37%) and dose per pulse changes (with 0.54% of reference chamber measurements). The reproducibility of the system was {+-}0.55% for dose fractions of {approx}100 cGy. Energy dependence was within {+-}1.67% relative to the reference ionization chamber for the 6-20 MeV nominal electron beam energy range. The system exhibited excellent linear response (R{sup 2}=1.000) compared to reference ionization chamber in the dose range of 1-1000 cGy. The output factors were within {+-}0.54% of the corresponding reference ionization chamber measurements. Conclusions: The dosimetric properties of the gated fiber-optic-coupled dosimetry system compare favorably to the corresponding reference ionization chamber measurements and show considerable potential for applications in clinical electron beam radiotherapy.

  15. Single-Step Implementation of Universal Quantum Gates

    SciTech Connect (OSTI)

    Grigorenko, I.A.; Khveshchenko, D.V. [Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)

    2005-09-09T23:59:59.000Z

    We construct optimized implementations of the controlled-NOT and other universal two-qubit gates that, unlike many of the previously proposed protocols, are carried out in a single step. The new protocols require tunable interqubit couplings but, in return, show a significant improvement in the quality of gate operations. We make specific predictions for coupled Josephson junction qubits and compare them with the results of recent experiments.

  16. Rapidly reconfigurable all-optical universal logic gate

    DOE Patents [OSTI]

    Goddard, Lynford L. (Hayward, CA); Bond, Tiziana C. (Livermore, CA); Kallman, Jeffrey S. (Pleasanton, CA)

    2010-09-07T23:59:59.000Z

    A new reconfigurable cascadable all-optical on-chip device is presented. The gate operates by combining the Vernier effect with a novel effect, the gain-index lever, to help shift the dominant lasing mode from a mode where the laser light is output at one facet to a mode where it is output at the other facet. Since the laser remains above threshold, the speed of the gate for logic operations as well as for reprogramming the function of the gate is primarily limited to the small signal optical modulation speed of the laser, which can be on the order of up to about tens of GHz. The gate can be rapidly and repeatedly reprogrammed to perform any of the basic digital logic operations by using an appropriate analog optical or electrical signal at the gate selection port. Other all-optical functionality includes wavelength conversion, signal duplication, threshold switching, analog to digital conversion, digital to analog conversion, signal routing, and environment sensing. Since each gate can perform different operations, the functionality of such a cascaded circuit grows exponentially.

  17. Neutron scattering and extra short range interactions

    E-Print Network [OSTI]

    V. V. Nesvizhevsky; G. Pignol; K. V. Protasov

    2007-11-14T23:59:59.000Z

    The available data on neutron scattering were analyzed to constrain a hypothetical new short-range interaction. We show that these constraints are several orders of magnitude better than those usually cited in the range between 1 pm and 5 nm. This distance range occupies an intermediate space between collider searches for strongly coupled heavy bosons and searches for new weak macroscopic forces. We emphasise the reliability of the neutron constraints in so far as they provide several independent strategies. We have identified the most promising way to improve them.

  18. Under-gate defect formation in Ni-gate AlGaN/GaN high electron mobility transistors

    E-Print Network [OSTI]

    Florida, University of

    energy loss spectroscopy [23]. In contrast, HEMTs utilizing a Pt liner layer did not show the same gate electrical contact to the 2DEG. However, when stressing occurs in O2 or air, the O2 present reacts

  19. The gated community: residents' crime experience and perception of safety behind gates and fences in the urban area

    E-Print Network [OSTI]

    Kim, Suk Kyung

    2006-10-30T23:59:59.000Z

    The primary purpose of the study is to explore the connections between residents' perception of safety and their crime experience, and the existence of gates and fences in multi-family housing communities in urban areas. For cultivating discussions...

  20. Atoms for space

    SciTech Connect (OSTI)

    Buden, D.

    1990-10-01T23:59:59.000Z

    Nuclear technology offers many advantages in an expanded solar system space exploration program. These cover a range of possible applications such as power for spacecraft, lunar and planetary surfaces, and electric propulsion; rocket propulsion for lunar and Mars vehicles; space radiation protection; water and sewage treatment; space mining; process heat; medical isotopes; and self-luminous systems. In addition, space offers opportunities to perform scientific research and develop systems that can solve problems here on Earth. These might include fusion and antimatter research, using the Moon as a source of helium-3 fusion fuel, and manufacturing perfect fusion targets. In addition, nuclear technologies can be used to reduce risk and costs of the Space Exploration Initiative. 1 fig.

  1. Innovation Spaces

    E-Print Network [OSTI]

    Schneider-Sikorsky, Patrick A

    2014-01-01T23:59:59.000Z

    Innovation ecosystems today are the lifeblood or the great hope of many major economies, but at the heart of these ecosystems, there are places and spaces. Silicon Valley is not just a place, but a cluster of spaces where ...

  2. Space Kimchi

    E-Print Network [OSTI]

    Hacker, Randi; Oborny, Jaimie; Tsutsui, William

    2006-07-05T23:59:59.000Z

    Broadcast Transcript: In space, no one can hear you scream... but did you know that in space no one can detect your smell either? The smell-taste connection means that food in space is not only weightless but tasteless, too. What's a flavor...

  3. Neutron range spectrometer

    DOE Patents [OSTI]

    Manglos, S.H.

    1988-03-10T23:59:59.000Z

    A neutron range spectrometer and method for determining the neutron energy spectrum of a neutron emitting source are disclosed. Neutrons from the source are colliminated along a collimation axis and a position sensitive neutron counter is disposed in the path of the collimated neutron beam. The counter determines positions along the collimation axis of interactions between the neutrons in the neutron beam and a neutron-absorbing material in the counter. From the interaction positions, a computer analyzes the data and determines the neutron energy spectrum of the neutron beam. The counter is preferably shielded and a suitable neutron-absorbing material is He-3. 1 fig.

  4. RangeTables.xls

    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 MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared at 278, 298, and 323Program2Raftopoulos(MeVcm²/mg) LET vs. Range

  5. Long Range Development Plan

    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 MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and Interfaces Sample6,Local Correlations andLocalThroughout theLong Range

  6. Long Range Operations Schedule

    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 MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and Interfaces Sample6,Local Correlations andLocalThroughout theLong Range7

  7. Long Range Operations Schedule

    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 MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and Interfaces Sample6,Local Correlations andLocalThroughout theLong Range78

  8. $?$--Rindler space

    E-Print Network [OSTI]

    J. Kowalski-Glikman

    2009-07-18T23:59:59.000Z

    In this paper we construct, and investigate some thermal properties of, the non-commutative counterpart of Rindler space, which we call $\\kappa$--Rindler space. This space is obtained by changing variables in the defining commutators of $\\kappa$--Minkowski space. We then re-derive the commutator structure of $\\kappa$--Rindler space with the help of an appropriate star product, obtained from the $\\kappa$--Minkowski one. Using this star product, following the idea of Padmanabhan, we find the leading order, $1/\\kappa$ correction to the Hawking thermal spectrum.

  9. Identification of a reversible quantum gate: assessing the resources

    E-Print Network [OSTI]

    Giulio Chiribella; Giacomo Mauro D'Ariano; Martin Roetteler

    2014-09-12T23:59:59.000Z

    We assess the resources needed to identify a reversible quantum gate among a finite set of alternatives, including in our analysis both deterministic and probabilistic strategies. Among the probabilistic strategies we consider unambiguous gate discrimination, where errors are not tolerated but inconclusive outcomes are allowed, and we prove that parallel strategies are sufficient to unambiguously identify the unknown gate with minimum number of queries. This result is used to provide upper and lower bounds on the query complexity and on the minimum ancilla dimension. In addition, we introduce the notion of generalized t-designs, which includes unitary t-designs and group representations as special cases. For gates forming a generalized t-design we give an explicit expression for the maximum probability of correct gate identification and we prove that there is no gap between the performances of deterministic strategies an those of probabilistic strategies. Hence, evaluating of the query complexity of perfect deterministic discrimination is reduced to the easier problem of evaluating the query complexity of unambiguous discrimination. Finally, we consider discrimination strategies where the use of ancillas is forbidden, providing upper bounds on the number of additional queries needed to make up for the lack of entanglement with the ancillas.

  10. Interfacial Layer Growth Condition Dependent Carrier Transport Mechanisms in HfO2/SiO2 Gate Stacks

    SciTech Connect (OSTI)

    Sahoo, S. K.; Misra, D.

    2012-06-04T23:59:59.000Z

    The temperature and field dependent leakage current in HfO{sub 2}/SiO{sub 2} gate stack for in situ steam grown and chemical interfacial layers (ILs) are studied in the temperature range of 20 C to 105 C. Poole-Frenkel mechanism in high field whereas Ohmic conduction in low field region are dominant for both devices. Leakage current decreases whereas both trap energy level ({phi}{sub t}) and activation energy (E{sub a}) increase for chemically grown IL devices. The trap level energy, ({phi}{sub t}) -0.2 eV, indicates that doubly charged oxygen vacancies (V{sup 2-}) are the active electron traps which contribute to the leakage current in these gate stacks.

  11. Long range global warming

    SciTech Connect (OSTI)

    Rolle, K.C.; Pulkrabek, W.W.; Fiedler, R.A. [Univ. of Wisconsin, Platteville, WI (United States)

    1995-12-31T23:59:59.000Z

    This paper explores one of the causes of global warming that is often overlooked, the direct heating of the environment by engineering systems. Most research and studies of global warming concentrate on the modification that is occurring to atmospheric air as a result of pollution gases being added by various systems; i.e., refrigerants, nitrogen oxides, ozone, hydrocarbons, halon, and others. This modification affects the thermal radiation balance between earth, sun and space, resulting in a decrease of radiation outflow and a slow rise in the earth`s steady state temperature. For this reason the solution to the problem is perceived as one of cleaning up the processes and effluents that are discharged into the environment. In this paper arguments are presented that suggest, that there is a far more serious cause for global warming that will manifest itself in the next two or three centuries; direct heating from the exponential growth of energy usage by humankind. Because this is a minor contributor to the global warming problem at present, it is overlooked or ignored. Energy use from the combustion of fuels and from the output of nuclear reactions eventually is manifest as warming of the surroundings. Thus, as energy is used at an ever increasing rate the consequent global warming also increases at an ever increasing rate. Eventually this rate will become equal to a few percent of solar radiation. When this happens the earth`s temperature will have risen by several degrees with catastrophic results. The trends in world energy use are reviewed and some mathematical models are presented to suggest future scenarios. These models can be used to predict when the global warming problem will become undeniably apparent, when it will become critical, and when it will become catastrophic.

  12. Wide range radioactive gas concentration detector

    DOE Patents [OSTI]

    Anderson, David F. (Los Alamos, NM)

    1984-01-01T23:59:59.000Z

    A wide range radioactive gas concentration detector and monitor which is capable of measuring radioactive gas concentrations over a range of eight orders of magnitude. The device of the present invention is designed to have an ionization chamber which is sufficiently small to give a fast response time for measuring radioactive gases but sufficiently large to provide accurate readings at low concentration levels. Closely spaced parallel plate grids provide a uniform electric field in the active region to improve the accuracy of measurements and reduce ion migration time so as to virtually eliminate errors due to ion recombination. The parallel plate grids are fabricated with a minimal surface area to reduce the effects of contamination resulting from absorption of contaminating materials on the surface of the grids. Additionally, the ionization chamber wall is spaced a sufficient distance from the active region of the ionization chamber to minimize contamination effects.

  13. Self-aligned submicron gate length gallium arsenide MESFET

    E-Print Network [OSTI]

    Huang, Hsien-Ching

    2012-06-07T23:59:59.000Z

    -biaserl saturation currents of 396. 67 + 83. 984 IzA were obtained for the transistors. Built- in voltages of 0. 8198 6 0. 007 V and ideality factors of 1. 456 6 0. 0079 were obtained for the Schottky diodes. The effect of gate length on transcond ictance... Geometrical and physical origins for the small signal equivalent circuit of FET Developed fabrication process for submicron gate length GaAs MESFET Transistor and Schottky diode mask patterns 10 13 15 16 18 19 21 23 23 25 25 32 34 18. Process...

  14. Simultaneous laser ranging and communication from an Earth-based satellite laser ranging station to the Lunar Reconnaissance Orbiter in lunar orbit

    E-Print Network [OSTI]

    Sun, Xiaoli

    We report a free space laser communication experiment from the satellite laser ranging (SLR) station at NASA Goddard Space Flight Center (GSFC) to the Lunar Reconnaissance Orbiter (LRO) in lunar orbit through the on board ...

  15. Neutron range spectrometer

    DOE Patents [OSTI]

    Manglos, Stephen H. (East Syracuse, NY)

    1989-06-06T23:59:59.000Z

    A neutron range spectrometer and method for determining the neutron energy spectrum of a neutron emitting source are disclosed. Neutrons from the source are collimnated along a collimation axis and a position sensitive neutron counter is disposed in the path of the collimated neutron beam. The counter determines positions along the collimation axis of interactions between the neutrons in the neutron beam and a neutron-absorbing material in the counter. From the interaction positions, a computer analyzes the data and determines the neutron energy spectrum of the neutron beam. The counter is preferably shielded and a suitable neutron-absorbing material is He-3. The computer solves the following equation in the analysis: ##EQU1## where: N(x).DELTA.x=the number of neutron interactions measured between a position x and x+.DELTA.x, A.sub.i (E.sub.i).DELTA.E.sub.i =the number of incident neutrons with energy between E.sub.i and E.sub.i +.DELTA.E.sub.i, and C=C(E.sub.i)=N .sigma.(E.sub.i) where N=the number density of absorbing atoms in the position sensitive counter means and .sigma. (E.sub.i)=the average cross section of the absorbing interaction between E.sub.i and E.sub.i +.DELTA.E.sub.i.

  16. Workfunction Tuning of n-Channel MOSFETs Using Interfacial Yttrium Layer in Fully Silicided Nickel Gate

    E-Print Network [OSTI]

    Yu, Hongpeng

    Continual scaling of the CMOS technology requires thinner gate dielectric to maintain high performance. However, when moving into the sub-45 nm CMOS generation, the traditional poly-Si gate approach cannot effectively ...

  17. E-Print Network 3.0 - alternative gate dielectric Sample Search...

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

    poor quality Ge native dielectrics for gate insulator and field... of the optimum ALD HfO on thin Ge oxynitride (GeO N ) gate ... Source: Chui, Chi On - Electrical Engineering...

  18. UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE...

    Energy Savers [EERE]

    UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence Presentation...

  19. Penn State DOE GATE Center of Exellence for In-Vehicle, High...

    Energy Savers [EERE]

    Penn State DOE GATE Center of Exellence for In-Vehicle, High-Power Energy Storage Systems Penn State DOE GATE Center of Exellence for In-Vehicle, High-Power Energy Storage Systems...

  20. HiRes camera and LIDAR ranging system for the Clementine mission

    SciTech Connect (OSTI)

    Ledebuhr, A.G.; Kordas, J.F.; Lewis, I.T. [and others

    1995-04-01T23:59:59.000Z

    Lawrence Livermore National Laboratory developed a space-qualified High Resolution (HiRes) imaging LIDAR (Light Detection And Ranging) system for use on the DoD Clementine mission. The Clementine mission provided more than 1.7 million images of the moon, earth, and stars, including the first ever complete systematic surface mapping of the moon from the ultra-violet to near-infrared spectral regions. This article describes the Clementine HiRes/LIDAR system, discusses design goals and preliminary estimates of on-orbit performance, and summarizes lessons learned in building and using the sensor. The LIDAR receiver system consists of a High Resolution (HiRes) imaging channel which incorporates an intensified multi-spectral visible camera combined with a Laser ranging channel which uses an avalanche photo-diode for laser pulse detection and timing. The receiver was bore sighted to a light-weight McDonnell-Douglas diode-pumped ND:YAG laser transmitter that emmitted 1.06 {micro}m wavelength pulses of 200 mJ/pulse and 10 ns pulse-width, The LIDAR receiver uses a common F/9.5 Cassegrain telescope assembly. The optical path of the telescope is split using a color-separating beamsplitter. The imaging channel incorporates a filter wheel assembly which spectrally selects the light which is imaged onto a custom 12 mm gated image intensifier fiber-optically-coupled into a 384 x 276 pixel frame transfer CCD FPA. The image intensifier was spectrally sensitive over the 0.4 to 0.8 {micro}m wavelength region. The six-position filter wheel contained 4 narrow spectral filters, one broadband and one blocking filter. At periselene (400 km) the HiRes/LIDAR imaged a 2.8 km swath width at 20-meter resolution. The LIDAR function detected differential signal return with a 40-meter range accuracy, with a maximum range capability of 640 km, limited by the bit counter in the range return counting clock.

  1. Electrical gating effects on the magnetic properties of (Ga,Mn)As diluted magnetic semiconductors

    E-Print Network [OSTI]

    Owen, Man Hon Samuel

    2010-11-16T23:59:59.000Z

    -effect transistor (FET) based on low-doped Ga0.975Mn0.025As was fabricated. It has an in-built n-GaAs back-gate, which, in addition to being a normal gate, enhances the gating effects, especially in the depletion of the epilayer, by decreasing the effective channel...

  2. Compressed sensing quantum process tomography for superconducting quantum gates

    E-Print Network [OSTI]

    Andrey V. Rodionov; Andrzej Veitia; R. Barends; J. Kelly; Daniel Sank; J. Wenner; John M. Martinis; Robert L. Kosut; Alexander N. Korotkov

    2014-07-03T23:59:59.000Z

    We apply the method of compressed sensing (CS) quantum process tomography (QPT) to characterize quantum gates based on superconducting Xmon and phase qubits. Using experimental data for a two-qubit controlled-Z gate, we obtain an estimate for the process matrix $\\chi$ with reasonably high fidelity compared to full QPT, but using a significantly reduced set of initial states and measurement configurations. We show that the CS method still works when the amount of used data is so small that the standard QPT would have an underdetermined system of equations. We also apply the CS method to the analysis of the three-qubit Toffoli gate with numerically added noise, and similarly show that the method works well for a substantially reduced set of data. For the CS calculations we use two different bases in which the process matrix $\\chi$ is approximately sparse, and show that the resulting estimates of the process matrices match each ther with reasonably high fidelity. For both two-qubit and three-qubit gates, we characterize the quantum process by not only its process matrix and fidelity, but also by the corresponding standard deviation, defined via variation of the state fidelity for different initial states.

  3. Quantum phase gate for optical qubits with cavity quantum optomechanics

    E-Print Network [OSTI]

    Muhammad Asjad; Paolo Tombesi; David Vitali

    2015-01-16T23:59:59.000Z

    We show that a cavity optomechanical system formed by a mechanical resonator simultaneously coupled to two modes of an optical cavity can be used for the implementation of quantum phase gate between optical qubits associated with the two intracavity modes. The scheme is realizable for sufficiently strong single-photon optomechanical coupling in the resolved sideband regime, and is robust against cavity losses.

  4. ECG Gated Tomographic reconstruction for 3-D Rotational Coronary Angiography

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    imaging techniques to improve both the safety and the efficacy of coronary angiography interventions the ground for a platform dedicated to the planning and execution of percutaneous coronary inter- ventionsECG Gated Tomographic reconstruction for 3-D Rotational Coronary Angiography Yining HU, Lizhe XIE

  5. Advanced Gate Drive for the SNS High Voltage Converter Modulator

    SciTech Connect (OSTI)

    Nguyen, M.N.; Burkhart, C.; Kemp, M.A.; /SLAC; Anderson, D.E.; /Oak Ridge

    2009-05-07T23:59:59.000Z

    SLAC National Accelerator Laboratory is developing a next generation H-bridge switch plate [1], a critical component of the SNS High Voltage Converter Modulator [2]. As part of that effort, a new IGBT gate driver has been developed. The drivers are an integral part of the switch plate, which are essential to ensuring fault-tolerant, high-performance operation of the modulator. The redesigned driver improves upon the existing gate drive in several ways. The new gate driver has improved fault detection and suppression capabilities; suppression of shoot-through and over-voltage conditions, monitoring of dI/dt and Vce(sat) for fast over-current detection and suppression, and redundant power isolation are some of the added features. In addition, triggering insertion delay is reduced by a factor of four compared to the existing driver. This paper details the design and performance of the new IGBT gate driver. A simplified schematic and description of the construction are included. The operation of the fast over-current detection circuits, active IGBT over-voltage protection circuit, shoot-through prevention circuitry, and control power isolation breakdown detection circuit are discussed.

  6. An overview of the gate and panel industry

    E-Print Network [OSTI]

    Fisher, C. West

    2000-01-01T23:59:59.000Z

    acquiring raw materials, its pre-fabrication, welding, touch-up, and delivery of the product. My first major responsibility for Texas Gate and Panel was to expand its sales territory. It soon became obvious that a thorough knowledge of my competitors...

  7. Design, Simulation and Modeling of Insulated Gate Bipolar Transistor

    E-Print Network [OSTI]

    Gupta, Kaustubh

    2013-07-09T23:59:59.000Z

    The market for Insulated Gate Bipolar Transistor (IGBT) is growing and there is a need for techniques to improve the design, modeling and simulation of IGBT. In this thesis, we first developed a new method to optimize the layout and dimensions...

  8. Optical gating of perylene bisimide fluorescence using dithienylcyclopentene photochromic switches

    SciTech Connect (OSTI)

    Pärs, Martti; Köhler, Jürgen, E-mail: juergen.koehler@uni-bayreuth.de [Experimental Physics IV, University of Bayreuth, 95440 Bayreuth (Germany)] [Experimental Physics IV, University of Bayreuth, 95440 Bayreuth (Germany); Gräf, Katja; Bauer, Peter; Thelakkat, Mukundan [Applied Functional Polymers, University of Bayreuth, 95440 Bayreuth (Germany)] [Applied Functional Polymers, University of Bayreuth, 95440 Bayreuth (Germany)

    2013-11-25T23:59:59.000Z

    The emission of millions of fluorescence photons from a chromophore is controlled by the absorption of a few tens of photons in a photochromic molecule. The parameters that determine the efficiency of this process are investigated, providing insights for the development of an all-optical gate.

  9. Controlling Wild Mobile Robots Using Virtual Gates and Discrete Transitions

    E-Print Network [OSTI]

    LaValle, Steven M.

    Controlling Wild Mobile Robots Using Virtual Gates and Discrete Transitions Leonardo Bobadilla purposely design them to execute wild motions, which means each will strike every open set infinitely often, "wildly behaving" robots that move more-or-less straight until a wall is contacted. They then pick

  10. TECH FORUM: [VERIFIED RTL TO GATES] Efficient RC power grid

    E-Print Network [OSTI]

    Najm, Farid N.

    TECH FORUM: [VERIFIED RTL TO GATES] Efficient RC power grid verification using node elimination proposes a novel approach to systematically reduce the power grid and accurately compute an upper bound on the voltage drops at power grid nodes that are retained. Furthermore, acriterion for the safety of nodes

  11. Silicon-on-insulator-based high-voltage, high-temperature integrated circuit gate driver for silicon carbide-based power field effect transistors

    SciTech Connect (OSTI)

    Tolbert, Leon M [ORNL; Huque, Mohammad A [ORNL; Blalock, Benjamin J [ORNL; Islam, Syed K [ORNL

    2010-01-01T23:59:59.000Z

    Silicon carbide (SiC)-based field effect transistors (FETs) are gaining popularity as switching elements in power electronic circuits designed for high-temperature environments like hybrid electric vehicle, aircraft, well logging, geothermal power generation etc. Like any other power switches, SiC-based power devices also need gate driver circuits to interface them with the logic units. The placement of the gate driver circuit next to the power switch is optimal for minimising system complexity. Successful operation of the gate driver circuit in a harsh environment, especially with minimal or no heat sink and without liquid cooling, can increase the power-to-volume ratio as well as the power-to-weight ratio for power conversion modules such as a DC-DC converter, inverter etc. A silicon-on-insulator (SOI)-based high-voltage, high-temperature integrated circuit (IC) gate driver for SiC power FETs has been designed and fabricated using a commercially available 0.8--m, 2-poly and 3-metal bipolar-complementary metal oxide semiconductor (CMOS)-double diffused metal oxide semiconductor (DMOS) process. The prototype circuit-s maximum gate drive supply can be 40-V with peak 2.3-A sourcing/sinking current driving capability. Owing to the wide driving range, this gate driver IC can be used to drive a wide variety of SiC FET switches (both normally OFF metal oxide semiconductor field effect transistor (MOSFET) and normally ON junction field effect transistor (JFET)). The switching frequency is 20-kHz and the duty cycle can be varied from 0 to 100-. The circuit has been successfully tested with SiC power MOSFETs and JFETs without any heat sink and cooling mechanism. During these tests, SiC switches were kept at room temperature and ambient temperature of the driver circuit was increased to 200-C. The circuit underwent numerous temperature cycles with negligible performance degradation.

  12. Development of a Microchannel Plate-Based Gated X-ray Imager for Imaging and Spectroscopy Experiments on Z

    SciTech Connect (OSTI)

    Wu, M., Kruschwitz, C. A., Tibbitts, A., Rochau, G.

    2011-06-24T23:59:59.000Z

    This poster describes a microchannelplate (MCP)–based, gated x-ray imager developed by National Security Technologies, LLC (NSTec), and Sandia National Laboratories(SNL) over the past several years. The camera consists of a 40 mm × 40 mm MCP, coated with eight 4 mm wide microstrips. The camera is gated by sending subnanosecond high-voltage pulses across the striplines. We have performed an extensive characterization of the camera, the results of which we present here. The camera has an optical gate profile width (time resolution) as narrow as 150 ps and detector uniformity of better than 30% along the length of a strip, far superior than what was achieved in previous designs. The spatial resolution is on the order of 40 microns for imaging applications and a dynamic range of between ~100 and ~1000. We also present results from a Monte Carlo simulation code developed by NSTec over the last several years. Agreement between the simulation results and the experimental measurements is very good.

  13. Electron-beam patterning of polymer electrolyte films to make multiple nanoscale gates for nanowire transistors

    E-Print Network [OSTI]

    D. J. Carrad; A. M. Burke; R. W. Lyttleton; H. J. Joyce; H. H. Tan; C. Jagadish; K. Storm; H. Linke; L. Samuelson; A. P. Micolich

    2014-04-08T23:59:59.000Z

    We report an electron-beam based method for the nanoscale patterning of the poly(ethylene oxide)/LiClO$_{4}$ polymer electrolyte. We use the patterned polymer electrolyte as a high capacitance gate dielectric in single nanowire transistors and obtain subthreshold swings comparable to conventional metal/oxide wrap-gated nanowire transistors. Patterning eliminates gate/contact overlap which reduces parasitic effects and enables multiple, independently controllable gates. The method's simplicity broadens the scope for using polymer electrolyte gating in studies of nanowires and other nanoscale devices.

  14. Space Nuclear

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

    Space Nuclear Today the INL is preparing to assist with the Multi-Mission RTG (MMRTG). The INL is assigned the final assembly and testing of the RTG for the project which is...

  15. A real-time respiration position based passive breath gating equipment for gated radiotherapy: A preclinical evaluation

    SciTech Connect (OSTI)

    Hu Weigang; Xu Anjie; Li Guichao; Zhang Zhen; Housley, Dave; Ye Jinsong [Department of Radiation Oncology, Fudan University Shanghai Cancer Center and Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032 (China); Department of Radiation Oncology, Swedish Cancer Institute, Seattle, Washington 98104 (United States)

    2012-03-15T23:59:59.000Z

    Purpose: To develop a passive gating system incorporating with the real-time position management (RPM) system for the gated radiotherapy. Methods: Passive breath gating (PBG) equipment, which consists of a breath-hold valve, a controller mechanism, a mouthpiece kit, and a supporting frame, was designed. A commercial real-time positioning management system was implemented to synchronize the target motion and radiation delivery on a linear accelerator with the patient's breathing cycle. The respiratory related target motion was investigated by using the RPM system for correlating the external markers with the internal target motion while using PBG for passively blocking patient's breathing. Six patients were enrolled in the preclinical feasibility and efficiency study of the PBG system. Results: PBG equipment was designed and fabricated. The PBG can be manually triggered or released to block or unblock patient's breathing. A clinical workflow was outlined to integrate the PBG with the RPM system. After implementing the RPM based PBG system, the breath-hold period can be prolonged to 15-25 s and the treatment delivery efficiency for each field can be improved by 200%-400%. The results from the six patients showed that the diaphragm motion caused by respiration was reduced to less than 3 mm and the position of the diaphragm was reproducible for difference gating periods. Conclusions: A RPM based PBG system was developed and implemented. With the new gating system, the patient's breath-hold time can be extended and a significant improvement in the treatment delivery efficiency can also be achieved.

  16. Presented at the 2003 USSD Annual Lecture, Charleston, South Carolina. April 2003. SPILLWAY GATE RELIABILITY IN THE CONTEXT OF

    E-Print Network [OSTI]

    Bowles, David S.

    and operations are listed and illustrated through their application to the Thames Flood Barrier gates

  17. Inertial range turbulence in kinetic plasmas

    E-Print Network [OSTI]

    G. G. Howes

    2007-11-27T23:59:59.000Z

    The transfer of turbulent energy through an inertial range from the driving scale to dissipative scales in a kinetic plasma followed by the conversion of this energy into heat is a fundamental plasma physics process. A theoretical foundation for the study of this process is constructed, but the details of the kinetic cascade are not well understood. Several important properties are identified: (a) the conservation of a generalized energy by the cascade; (b) the need for collisions to increase entropy and realize irreversible plasma heating; and (c) the key role played by the entropy cascade--a dual cascade of energy to small scales in both physical and velocity space--to convert ultimately the turbulent energy into heat. A strategy for nonlinear numerical simulations of kinetic turbulence is outlined. Initial numerical results are consistent with the operation of the entropy cascade. Inertial range turbulence arises in a broad range of space and astrophysical plasmas and may play an important role in the thermalization of fusion energy in burning plasmas.

  18. Improved phase gate reliability in systems with neutral Ising anyons

    E-Print Network [OSTI]

    David J. Clarke; Kirill Shtengel

    2010-09-01T23:59:59.000Z

    Recent proposals using heterostructures of superconducting and either topologically insulating or semiconducting layers have been put forth as possible platforms for topological quantum computation. These systems are predicted to contain Ising anyons and share the feature of having only neutral edge excitations. In this note, we show that these proposals can be combined with the recently proposed "sack geometry" for implementation of a phase gate in order to conduct robust universal quantum computation. In addition, we propose a general method for adjusting edge tunneling rates in such systems, which is necessary for the control of interferometric devices. The error rate for the phase gate in neutral Ising systems is parametrically smaller than for a similar geometry in which the edge modes carry charge: it goes as $T^3$ rather than $T$ at low temperatures. At zero temperature, the phase variance becomes constant at long times rather than carrying a logarithmic divergence.

  19. Photon-photon gates in Bose-Einstein condensates

    E-Print Network [OSTI]

    Arnaud Rispe; Bing He; Christoph Simon

    2010-09-30T23:59:59.000Z

    It has recently been shown that light can be stored in Bose-Einstein condensates for over a second. Here we propose a method for realizing a controlled phase gate between two stored photons. The photons are both stored in the ground state of the effective trapping potential inside the condensate. The collision-induced interaction is enhanced by adiabatically increasing the trapping frequency and by using a Feshbach resonance. A controlled phase shift of $\\pi$ can be achieved in one second.

  20. GATE Center for Automotive Fuel Cell Systems at Virginia Tech

    SciTech Connect (OSTI)

    Douglas Nelson

    2011-05-31T23:59:59.000Z

    The Virginia Tech GATE Center for Automotive Fuel Cell Systems (CAFCS) achieved the following objectives in support of the domestic automotive industry: â?¢ Expanded and updated fuel cell and vehicle technologies education programs; â?¢ Conducted industry directed research in three thrust areas â?? development and characterization of materials for PEM fuel cells; performance and durability modeling for PEM fuel cells; and fuel cell systems design and optimization, including hybrid and plug-in hybrid fuel cell vehicles; â?¢ Developed MS and Ph.D. engineers and scientists who are pursuing careers related to fuel cells and automotive applications; â?¢ Published research results that provide industry with new knowledge which contributes to the advancement of fuel cell and vehicle systems commercialization. With support from the Dept. of Energy, the CAFCS upgraded existing graduate course offerings; introduced a hands-on laboratory component that make use of Virginia Techâ??s comprehensive laboratory facilities, funded 15 GATE Fellowships over a five year period; and expanded our program of industry interaction to improve student awareness of challenges and opportunities in the automotive industry. GATE Center graduate students have a state-of-the-art research experience preparing them for a career to contribute to the advancement fuel cell and vehicle technologies.

  1. Space Sciences

    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 MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment2)isomeraseUSChargeSpace Sciences Space

  2. Use of a hard mask for formation of gate and dielectric via nanofilament field emission devices

    DOE Patents [OSTI]

    Morse, Jeffrey D. (Martinez, CA); Contolini, Robert J. (Lake Oswego, OR)

    2001-01-01T23:59:59.000Z

    A process for fabricating a nanofilament field emission device in which a via in a dielectric layer is self-aligned to gate metal via structure located on top of the dielectric layer. By the use of a hard mask layer located on top of the gate metal layer, inert to the etch chemistry for the gate metal layer, and in which a via is formed by the pattern from etched nuclear tracks in a trackable material, a via is formed by the hard mask will eliminate any erosion of the gate metal layer during the dielectric via etch. Also, the hard mask layer will protect the gate metal layer while the gate structure is etched back from the edge of the dielectric via, if such is desired. This method provides more tolerance for the electroplating of a nanofilament in the dielectric via and sharpening of the nanofilament.

  3. Radiation-damage phenomena in insulated-gate field-effect transistors

    SciTech Connect (OSTI)

    Sune, Chingtzong.

    1990-01-01T23:59:59.000Z

    This study reports on investigation of the electrical influences of ionizing radiation on the characteristics of Insulated Gate Field Effect Transistors. It includes two major parts, i.e., (A) The electrical effects of device characteristics of the defect generated by silicon or oxygen ion implantation has been examined in detail. Surprisingly, large quantities of neutral electron traps (NET) are generated, and only small quantities of fixed positive charge (FPC) is observed. These studies also raise the issue of the correlation between E{sub {gamma}}{prime} centers and FPC. A similar correlation can be made between E{sub {gamma}}{prime} centers and NET since processes that annihilate FPC tend to create fixed negative charge (FNC) from NET, and processes that would tend to generate FPC would tend to create NET from FNC. It was found that silicon or oxygen implanted gate insulators are more susceptible to X-ray radiation than unimplanted devices and that insulator damage due to silicon or oxygen ion implantation is essentially unannealable. (B) A new electron trapping model has been proposed to model experimental data better than is accomplished by existing first-order trapping kinetic approaches. This model includes a continuous decrease of the trapping cross section, {sigma}{sub 0}, as a function of the number of filled traps, N{sub D}. The dependency of {sigma}{sub 0} is believed to be related physically to the annihilation, or buildup of coulombic charge, which repulsive effect has heretofore been neglected in first-order trapping kinetics that describe the entire defect concentration range. It was found that an injection current density dependency of electron trapping at constant total injected charge occurs only when NETs are being filled.

  4. Fast and reliable automated ventriculography for gated blood-pool studies

    SciTech Connect (OSTI)

    Lima, M.G.

    1984-01-01T23:59:59.000Z

    A set of algorithms, requiring only one single operator-interaction and minimal running time, has been generated to analyze left-ventricular function from cardiac gated Tc-99m Blood-pool Nuclear Medicine scintigrams (CBPS). The process depends mainly on an optimal edge enhancement filter derived in the frequency domain and applied to the study via FFT. The bandpass filter is based on Prolate Spheroidal wave functions and was described by Shanmugam et al in 1979. It maximizes output in the vicinity of edges, and is adapted here to enhance the ventricular region of interest (ROI) yielding images with sharp edges and good signal-to-noise ratio (SNR). This procedure does not require previous background subtraction from initial images in order to adequately define left-ventricular contours. A filter format has been chosen which will allow successful performance of the technique over a wide range of CBPS. The filtered image is then scanned and, on the original frame edges around ROI are marked and counts within ROI are defined. It will automatically run for any allowed number or size of frames. Processing time averages less than one minute when employing an Array Processor for a set of 32 64x64 pixel frames. Nuclear Medicine image processing applications of such filter have not been reported to date. This process has been tested on variable rate, variable ejection fraction, known volume Vanderbilt cardiac phantom; with maximum deviation of 3.5% and estimated standard deviation (SD) of 1.7%. When compared to other processes currently available, this technique is clearly more reliable due to its accuracy, speed and simplicity. It has also been used to determine ventricular volumes from gated SPECT images, with a respectable SD of 2.8%.

  5. A Comparison of Amplitude-Based and Phase-Based Positron Emission Tomography Gating Algorithms for Segmentation of Internal Target Volumes of Tumors Subject to Respiratory Motion

    SciTech Connect (OSTI)

    Jani, Shyam S., E-mail: sjani@mednet.ucla.edu [Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, California (United States); Robinson, Clifford G. [Department of Radiation Oncology, Siteman Cancer Center, Washington University in St Louis, St Louis, Missouri (United States); Dahlbom, Magnus [Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, California (United States); White, Benjamin M.; Thomas, David H.; Gaudio, Sergio; Low, Daniel A.; Lamb, James M. [Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles, California (United States)

    2013-11-01T23:59:59.000Z

    Purpose: To quantitatively compare the accuracy of tumor volume segmentation in amplitude-based and phase-based respiratory gating algorithms in respiratory-correlated positron emission tomography (PET). Methods and Materials: List-mode fluorodeoxyglucose-PET data was acquired for 10 patients with a total of 12 fluorodeoxyglucose-avid tumors and 9 lymph nodes. Additionally, a phantom experiment was performed in which 4 plastic butyrate spheres with inner diameters ranging from 1 to 4 cm were imaged as they underwent 1-dimensional motion based on 2 measured patient breathing trajectories. PET list-mode data were gated into 8 bins using 2 amplitude-based (equal amplitude bins [A1] and equal counts per bin [A2]) and 2 temporal phase-based gating algorithms. Gated images were segmented using a commercially available gradient-based technique and a fixed 40% threshold of maximum uptake. Internal target volumes (ITVs) were generated by taking the union of all 8 contours per gated image. Segmented phantom ITVs were compared with their respective ground-truth ITVs, defined as the volume subtended by the tumor model positions covering 99% of breathing amplitude. Superior-inferior distances between sphere centroids in the end-inhale and end-exhale phases were also calculated. Results: Tumor ITVs from amplitude-based methods were significantly larger than those from temporal-based techniques (P=.002). For lymph nodes, A2 resulted in ITVs that were significantly larger than either of the temporal-based techniques (P<.0323). A1 produced the largest and most accurate ITVs for spheres with diameters of ?2 cm (P=.002). No significant difference was shown between algorithms in the 1-cm sphere data set. For phantom spheres, amplitude-based methods recovered an average of 9.5% more motion displacement than temporal-based methods under regular breathing conditions and an average of 45.7% more in the presence of baseline drift (P<.001). Conclusions: Target volumes in images generated from amplitude-based gating are larger and more accurate, at levels that are potentially clinically significant, compared with those from temporal phase-based gating.

  6. A dose point kernel database using GATE Monte Carlo simulation toolkit for nuclear medicine applications: Comparison with other Monte Carlo codes

    SciTech Connect (OSTI)

    Papadimitroulas, Panagiotis; Loudos, George; Nikiforidis, George C.; Kagadis, George C. [Department of Medical Physics, School of Medicine, University of Patras, Rion, GR 265 04 (Greece) and Department of Medical Instruments Technology, Technological Educational institute of Athens, Ag. Spyridonos Street, Egaleo GR 122 10, Athens (Greece); Department of Medical Instruments Technology, Technological Educational institute of Athens, Ag. Spyridonos Street, Egaleo GR 122 10, Athens (Greece); Department of Medical Physics, School of Medicine, University of Patras, Rion, GR 265 04 (Greece)

    2012-08-15T23:59:59.000Z

    Purpose: GATE is a Monte Carlo simulation toolkit based on the Geant4 package, widely used for many medical physics applications, including SPECT and PET image simulation and more recently CT image simulation and patient dosimetry. The purpose of the current study was to calculate dose point kernels (DPKs) using GATE, compare them against reference data, and finally produce a complete dataset of the total DPKs for the most commonly used radionuclides in nuclear medicine. Methods: Patient-specific absorbed dose calculations can be carried out using Monte Carlo simulations. The latest version of GATE extends its applications to Radiotherapy and Dosimetry. Comparison of the proposed method for the generation of DPKs was performed for (a) monoenergetic electron sources, with energies ranging from 10 keV to 10 MeV, (b) beta emitting isotopes, e.g., {sup 177}Lu, {sup 90}Y, and {sup 32}P, and (c) gamma emitting isotopes, e.g., {sup 111}In, {sup 131}I, {sup 125}I, and {sup 99m}Tc. Point isotropic sources were simulated at the center of a sphere phantom, and the absorbed dose was stored in concentric spherical shells around the source. Evaluation was performed with already published studies for different Monte Carlo codes namely MCNP, EGS, FLUKA, ETRAN, GEPTS, and PENELOPE. A complete dataset of total DPKs was generated for water (equivalent to soft tissue), bone, and lung. This dataset takes into account all the major components of radiation interactions for the selected isotopes, including the absorbed dose from emitted electrons, photons, and all secondary particles generated from the electromagnetic interactions. Results: GATE comparison provided reliable results in all cases (monoenergetic electrons, beta emitting isotopes, and photon emitting isotopes). The observed differences between GATE and other codes are less than 10% and comparable to the discrepancies observed among other packages. The produced DPKs are in very good agreement with the already published data, which allowed us to produce a unique DPKs dataset using GATE. The dataset contains the total DPKs for {sup 67}Ga, {sup 68}Ga, {sup 90}Y, {sup 99m}Tc, {sup 111}In, {sup 123}I, {sup 124}I, {sup 125}I, {sup 131}I, {sup 153}Sm, {sup 177}Lu {sup 186}Re, and {sup 188}Re generated in water, bone, and lung. Conclusions: In this study, the authors have checked GATE's reliability for absorbed dose calculation when transporting different kind of particles, which indicates its robustness for dosimetry applications. A novel dataset of DPKs is provided, which can be applied in patient-specific dosimetry using analytical point kernel convolution algorithms.

  7. Bill Gates and Deputy Secretary Poneman Discuss the Energy Technology Landscape

    Broader source: Energy.gov [DOE]

    Bill Gates and Deputy Secretary of Energy Daniel Poneman discuss the future of energy technology during the twenty-second Plenary Meeting of the Nuclear Suppliers Group.

  8. Locally observable conditions for the successful implementation of entangling multi-qubit quantum gates

    E-Print Network [OSTI]

    Holger F. Hofmann; Ryo Okamoto; Shigeki Takeuchi

    2005-09-01T23:59:59.000Z

    The information obtained from the operation of a quantum gate on only two complementary sets of input states is sufficient to estimate the quantum process fidelity of the gate. In the case of entangling gates, these conditions can be used to predict the multi qubit entanglement capability from the fidelities of two non-entangling local operations. It is then possible to predict highly non-classical features of the gate such as violations of local realism from the fidelities of two completely classical input-output relations, without generating any actual entanglement.

  9. Rapid optimization of working parameters of microwave-driven multilevel qubits for minimal gate leakage

    E-Print Network [OSTI]

    Zhou, Zhongyuan; Han, Siyuan; Chu, Shih-I

    2005-09-16T23:59:59.000Z

    .0134 is the interaction between the qubits, .0020 .0136 M=L is the coupling constant, and x i , x ei , and h.0133x i .0134 (i .0136 1 and 2) are the canonical coordinate, normal- ized external flux, and Hamiltonian of the ith single qubit. Note... for the gate at the point B. The quality of a gate can be described by gate fidelity F .0017 Trace.0137.0026 P .0026 I .0138, where .0026 P and.0026 I are the physical and ideal density matrices after gate operation and the overline denotes averaging over all...

  10. Use of high-level design information for enabling automation of fine-grained power gating

    E-Print Network [OSTI]

    Agarwal, Abhinav

    2014-01-01T23:59:59.000Z

    Leakage power reduction through power gating requires considerable design and verification effort. Conventionally, extensive analysis is required for dividing a heterogeneous design into power domains and generating control ...

  11. Error Compensation of Single-Qubit Gates in a Surface Electrode Ion Trap Using Composite Pulses

    E-Print Network [OSTI]

    Emily Mount; Chingiz Kabytayev; Stephen Crain; Robin Harper; So-Young Baek; Geert Vrijsen; Steven Flammia; Kenneth R. Brown; Peter Maunz; Jungsang Kim

    2015-04-06T23:59:59.000Z

    The trapped atomic ion qubits feature desirable properties for use in a quantum computer such as long coherence times (Langer et al., 2005), high qubit measurement fidelity (Noek et al., 2013), and universal logic gates (Home et al., 2009). The quality of quantum logic gate operations on trapped ion qubits has been limited by the stability of the control fields at the ion location used to implement the gate operations. For this reason, the logic gates utilizing microwave fields (Brown et al., 2011; Shappert et al., 2013; Harty et al., 2014) have shown gate fidelities several orders of magnitude better than those using laser fields (Knill et al., 2008; Benhelm et al., 2008; Ballance et al., 2014). Here, we demonstrate low-error single-qubit gates performed using stimulated Raman transitions on an ion qubit trapped in a microfabricated chip trap. Gate errors are measured using a randomized benchmarking protocol (Knill et al., 2008; Wallman et al., 2014; Magesan et al., 2012), where amplitude error in the control beam is compensated using various pulse sequence techniques (Wimperis, 1994; Low et al., 2014). Using B2 compensation (Wimperis, 1994), we demonstrate single qubit gates with an average error per randomized Clifford group gate of $3.6(3)\\times10^{-4}$. We also show that compact palindromic pulse compensation sequences (PD$n$) (Low et al., 2014) compensate for amplitude errors as designed.

  12. 2006-2010 GATE program at Ohio State University Center for Automotive...

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

    DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland. merit08guezennec.pdf More Documents & Publications GATE: Energy Efficient...

  13. Alternative Gate Dielectrics on Semiconductors for MOSFET Device Applications

    SciTech Connect (OSTI)

    Norton, D.P.; Budai, J.D.; Chisholm, M.F.; Pennycook, S.J.; McKee, R.; Walker, F.; Lee, Y.; Park, C.

    1999-12-06T23:59:59.000Z

    We have investigated the synthesis and properties of deposited oxides on Si and Ge for use as alternative gate dielectrics in MOSFET applications. The capacitance and leakage current behavior of polycrystalline Y{sub 2}O{sub 3} films synthesized by pulsed-laser deposition is reported. In addition, we also discuss the growth of epitaxial oxide structures. In particular, we have investigated the use of silicide termination for oxide growth on (001) Si using laser-molecular beam epitaxy. In addition, we discuss a novel approach involving the use of hydrogen to eliminate native oxide during initial dielectric oxide nucleation on (001) Ge.

  14. SiC Power MOSFET with Improved Gate Dielectric

    SciTech Connect (OSTI)

    Sbrockey, Nick M; Tompa, Gary S; Spencer, Michael G; Chandrashekhar, Chandra MVS

    2010-08-23T23:59:59.000Z

    In this STTR program, Structured Materials Industries (SMI), and Cornell University are developing novel gate oxide technology, as a critical enabler for silicon carbide (SiC) devices. SiC is a wide bandgap semiconductor material, with many unique properties. SiC devices are ideally suited for high-power, highvoltage, high-frequency, high-temperature and radiation resistant applications. The DOE has expressed interest in developing SiC devices for use in extreme environments, in high energy physics applications and in power generation. The development of transistors based on the Metal Oxide Semiconductor Field Effect Transistor (MOSFET) structure will be critical to these applications.

  15. Three-qubit phase gate based on cavity quantum electrodynamics

    E-Print Network [OSTI]

    Chang, Jun-Tao; Zubairy, M. Suhail

    2008-01-01T23:59:59.000Z

    - mentation, such as linear ion traps #4;1#5;, liquid-state nuclear magnetic resonance #1;NMR#2; #4;2#5;, and cavity QED systems #4;3,4#5;. There are three requirements for implementing a quantum computer: Efficient manipulation and read out of an indi.... #4;6#5;, a scheme to implement a two-qubit quantum phase gate and one-qubit unitary operation implementation based on cavity QED was described. They choose the Fock states #6;0#7; and #6;1#7; of a high Q cavity mode as the two logical states of a...

  16. Gate Hours & Services | Stanford Synchrotron Radiation Lightsource

    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 DocumentationP-SeriesFlickr Flickr Editor'sshort version) Thelong version)shortGate Hours &

  17. Space Videos

    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 ConchasPassiveSubmittedStatus Tom Fletcher,Future |Carlos ValenciaSpace Dust

  18. Droplet minimizers for the Gates-Lebowitz-Penrose free energy functional

    E-Print Network [OSTI]

    E. A. Carlen; M. C. Carvalho; R. Esposito; J. L. Lebowitz; R. Marra

    2009-05-21T23:59:59.000Z

    We study the structure of the constrained minimizers of the Gates-Lebowitz-Penrose free-energy functional ${\\mathcal F}_{\\rm GLP}(m)$, non-local functional of a density field $m(x)$, $x\\in {\\mathcal T}_L$, a $d$-dimensional torus of side length $L$. At low temperatures, ${\\mathcal F}_{\\rm GLP}$ is not convex, and has two distinct global minimizers, corresponding to two equilibrium states. Here we constrain the average density $L^{-d}\\int_{{\\cal T}_L}m(x)\\dd x$ to be a fixed value $n$ between the densities in the two equilibrium states, but close to the low density equilibrium value. In this case, a "droplet" of the high density phase may or may not form in a background of the low density phase, depending on the values $n$ and $L$. We determine the critical density for droplet formation, and the nature of the droplet, as a function of $n$ and $L$. The relation between the free energy and the large deviations functional for a particle model with long-range Kac potentials, proven in some cases, and expected to be true in general, then provides information on the structure of typical microscopic configurations of the Gibbs measure when the range of the Kac potential is large enough.

  19. IPA Extensions Range: 025002AF

    E-Print Network [OSTI]

    Erjavec, TomaÂ?

    IPA Extensions Range: 0250­02AF This file contains an excerpt from the character code tables 0268IPA Extensions0250 025B LATIN SMALL LETTER OPEN E = LATIN SMALL LETTER EPSILON · lower-mid front

  20. Contestation of Space

    E-Print Network [OSTI]

    Alkhalili, Nura

    2012-01-01T23:59:59.000Z

    Volume 25, 2012 Contestation of Space A Photo Essay by Nuraoccurring in Ramallah between refugee and non-refugee space.Keywords: Divided spaces Introduction This study was

  1. Competing for Shelf Space.

    E-Print Network [OSTI]

    Martínez-de-Albéniz, V.; Roels, G.

    2007-01-01T23:59:59.000Z

    Retailers, and Shelf Space. ” Journal of Marketing, 26(3),Model for Optimizing Retail Space Allocations. ” ManagementMethods to Estimate Shelf Space Elasticities. ” Quant.

  2. Coherent molecular transistor: Control through variation of the gate wave function

    SciTech Connect (OSTI)

    Ernzerhof, Matthias, E-mail: Matthias.Ernzerhof@UMontreal.ca [Département de Chimie, Université de Montréal, C.P. 6128 Succursale A, Montréal, Quebec H3C 3J7 (Canada)] [Département de Chimie, Université de Montréal, C.P. 6128 Succursale A, Montréal, Quebec H3C 3J7 (Canada)

    2014-03-21T23:59:59.000Z

    In quantum interference transistors (QUITs), the current through the device is controlled by variation of the gate component of the wave function that interferes with the wave function component joining the source and the sink. Initially, mesoscopic QUITs have been studied and more recently, QUITs at the molecular scale have been proposed and implemented. Typically, in these devices the gate lead is subjected to externally adjustable physical parameters that permit interference control through modifications of the gate wave function. Here, we present an alternative model of a molecular QUIT in which the gate wave function is directly considered as a variable and the transistor operation is discussed in terms of this variable. This implies that we specify the gate current as well as the phase of the gate wave function component and calculate the resulting current through the source-sink channel. Thus, we extend on prior works that focus on the phase of the gate wave function component as a control parameter while having zero or certain discrete values of the current. We address a large class of systems, including finite graphene flakes, and obtain analytic solutions for how the gate wave function controls the transistor.

  3. Gate Reliability Assessment for a Spillway Upgrade Design in Queensland, Australia USSD 2006 Conference Page 1

    E-Print Network [OSTI]

    Bowles, David S.

    Gate Reliability Assessment for a Spillway Upgrade Design in Queensland, Australia USSD 2006 Conference Page 1 RELIABILITY ASSESSMENT FOR A SPILLWAY GATE UPGRADE DESIGN IN QUEENSLAND, AUSTRALIA Malcolm of reliability analysis, and how the results influenced the spillway system design and overall risk evaluation

  4. Controlling the Performance of a Three-Terminal Molecular Transistor: Conformational versus Conventional Gating

    E-Print Network [OSTI]

    Pandey, Ravi

    University, Houghton, Michigan 49931, United States Shashi P. Karna* U.S. Army Research Laboratory, Weapons *S Supporting Information ABSTRACT: The effect of conformational changes in the gate arm of a three of the gate field. The current modulation is found to reach its maximum only under exclusive effect of voltage

  5. Ambipolar silicon nanowire FETs with stenciled-deposited metal gate Davide Sacchetto

    E-Print Network [OSTI]

    De Micheli, Giovanni

    Ambipolar silicon nanowire FETs with stenciled-deposited metal gate Davide Sacchetto , Veronica Keywords: Schottky barrier Ambipolarity Si nanowire Stencil lithography FET Silicide a b s t r a c t We chemical vapor deposition (LPCVD) of amorphous Si (a-Si) and SiO2 layers as well as metal gate patterning

  6. Surface application of molybdenum silicide onto gated poly-Si emitters for enhanced field emission performance

    E-Print Network [OSTI]

    Lee, Jong Duk

    the merits of molybdenum Mo silicide formation on gated polycrystalline silicon poly-Si field emitters. Metal, any metal silicide can be adopted without reSurface application of molybdenum silicide onto gated poly-Si emitters for enhanced field emission

  7. Probabilistic quantum gates between remote atoms through interference of optical frequency qubits

    E-Print Network [OSTI]

    Madsen, Martin John

    Probabilistic quantum gates between remote atoms through interference of optical frequency qubits L gates on remote trapped atom qubits through interference of optical frequency qubits. The method does be localized well under the Lamb-Dicke limit through laser cooling in a strong trap, the elimination

  8. Nanocrystals Embedded Zirconium-doped Hafnium Oxide High-k Gate Dielectric Films

    E-Print Network [OSTI]

    Lin, Chen-Han

    2012-10-19T23:59:59.000Z

    nanoparticles. These results can be important to the novel metal gate/high-k/Si MOS structure. The Ru-modified ZrHfO gate dielectric film showed a large breakdown voltage and a long lifetime. The conventional polycrystalline Si (poly-Si) charge trapping layer...

  9. Directions to USC, Gate 6 (Parking Structure A) 110 (Harbor Freeway) North

    E-Print Network [OSTI]

    Valero-Cuevas, Francisco

    on Vermont Avenue Turn right at 36th Place/Downey Way and enter USC at Gate 6 5 (Golden State/Santa AnaDirections to USC, Gate 6 (Parking Structure A) 110 (Harbor Freeway) North Take the Exposition Boulevard exit Go straight through the 37th Street light. Keep left Go under the freeway bridge and across

  10. Efficient polarization gating of high-order harmonic generation by polarization-shaped ultrashort pulses

    E-Print Network [OSTI]

    Silberberg, Yaron

    Polarization gating of high-order harmonic generation takes advantage of the significant reduction of har for generation of polarization gated pulses using wave-plate combinations is inefficient, and propose photon energy radiation from the harmonic spectrum. Need- less to say, the generation of near single

  11. Electrochemical gating of individual single-wall carbon nanotubes observed by electron transport measurements and resonant

    E-Print Network [OSTI]

    , the Fermi energy of a nanotube can be changed, as ions from the solution accu- mulate on the surface gating of nanotubes has been shown previously to effectively shift the Fermi energy of semiconducting with the laser energy, we can observe the Raman spectrum from a single SWNT.7 Electrochemical gating of nanotubes

  12. New Silicon Carbide Schottky-gate Bipolar Mode Field Effect Transistor (SiC SBMFET)

    E-Print Network [OSTI]

    Kumar, M. Jagadesh

    New Silicon Carbide Schottky-gate Bipolar Mode Field Effect Transistor (SiC SBMFET) without PN. In this paper, we propose a novel Schottky-gate BMFET (SBMFET) using P- type 4H Silicon-Carbide 13,41, a wide, Silicon Carbide, Field effect transistor, Simulation. I. INTRODUCTION TH E BMFET operates in bipolar mode

  13. Optimal Control of Airport Operations with Gate Capacity Constraints Harshad Khadilkar and Hamsa Balakrishnan

    E-Print Network [OSTI]

    Gummadi, Ramakrishna

    at Boston's Logan International Airport in the US are used to illustrate the advantages of the proposed for Boston Logan International Airport (BOS) is shown in Fig. 1. Gates at each of the four main terminalsOptimal Control of Airport Operations with Gate Capacity Constraints Harshad Khadilkar and Hamsa

  14. Classification : Original Article VOLTAGE-GATED SODIUM CHANNELS POTENTIATE THE INVASIVE

    E-Print Network [OSTI]

    Boyer, Edmond

    - gated sodium channels in non-small-cell lung cancer cell lines. Functional voltage-gated sodium channels cancerous cell lines H23, H460 and Calu-1 possess functional sodium channels while normal and weakly metastatic cell lines do not. While all the cell lines expressed mRNA for numerous sodium channel isoforms

  15. Microfluidic logic gates and timers{ Michael W. Toepke, Vinay V. Abhyankar and David J. Beebe*

    E-Print Network [OSTI]

    Beebe, David J.

    Microfluidic logic gates and timers{ Michael W. Toepke, Vinay V. Abhyankar and David J. Beebe to create a number of microfluidic analogs to electronic circuit components. Three classes of components are demonstrated: (1) OR/AND, NOR/NAND, and XNOR digital microfluidic logic gates; (2) programmable, autonomous

  16. Graphene field-effect transistors based on boron nitride gate dielectrics Inanc Meric1

    E-Print Network [OSTI]

    Shepard, Kenneth

    Graphene field-effect transistors based on boron nitride gate dielectrics Inanc Meric1 , Cory Dean1, 10027 Tel: (212) 854-2529, Fax: (212) 932-9421, Email: shepard@ee.columbia.edu Abstract Graphene field of graphene, as the gate dielectric. The devices ex- hibit mobility values exceeding 10,000 cm2 /V

  17. Design and characterization of a signal insulation coreless transformer integrated in a CMOS gate driver chip

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Design and characterization of a signal insulation coreless transformer integrated in a CMOS gate transformer integrated in a CMOS silicon die together with the gate driver and other required functions frequency through the coreless transformer. The chosen design methodology will be explained and experimental

  18. Analytical approach to swift non-leaky entangling gates in superconducting qubits

    E-Print Network [OSTI]

    Sophia E. Economou; Edwin Barnes

    2014-11-03T23:59:59.000Z

    We develop schemes for designing pulses that implement fast and precise entangling quantum gates in superconducting qubit systems despite the presence of nearby harmful transitions. Our approach is based on purposely involving the nearest harmful transition in the quantum evolution instead of trying to avoid it. Using analytical tools, we design simple microwave control fields that implement maximally entangling gates with fidelities exceeding 99% in times as low as 40 ns. We demonstrate our approach in a two-qubit circuit QED system by designing the two most important quantum entangling gates: a conditional-NOT gate and a conditional-Z gate. Our results constitute an important step toward overcoming the problem of spectral crowding, one of the primary challenges in controlling multi-qubit systems.

  19. A proposal for the realization of universal quantum gates via superconducting qubits inside a cavity

    SciTech Connect (OSTI)

    Obada, A.-S.F. [Faculty of Science, Al-Azhar University, Nasr City, Cairo (Egypt)] [Faculty of Science, Al-Azhar University, Nasr City, Cairo (Egypt); Hessian, H.A. [Faculty of Science, Assiut University, Assiut (Egypt)] [Faculty of Science, Assiut University, Assiut (Egypt); Mohamed, A.-B.A. [Faculty of Science, Assiut University, Assiut (Egypt) [Faculty of Science, Assiut University, Assiut (Egypt); Community College, Salman Bin Abdulaziz University, Al-Aflaj (Saudi Arabia); Homid, Ali H., E-mail: alihimad@yahoo.com [Faculty of Science, Al-Azhar University, Assiut (Egypt)

    2013-07-15T23:59:59.000Z

    A family of quantum logic gates is proposed via superconducting (SC) qubits coupled to a SC-cavity. The Hamiltonian for SC-charge qubits inside a single mode cavity is considered. Three- and two-qubit operations are generated by applying a classical magnetic field with the flux. Therefore, a number of quantum logic gates are realized. Numerical simulations and calculation of the fidelity are used to prove the success of these operations for these gates. -- Highlights: •A family of quantum logic gates is proposed via SC-qubits coupled to a cavity. •Three- and two-qubit operations are generated via a classical field with the flux. •Numerical simulations and calculation of the fidelity are used to prove the success of these operations for these gates.

  20. Experimental Estimation of Average Fidelity of a Clifford Gate on a 7-qubit Quantum Processor

    E-Print Network [OSTI]

    Dawei Lu; Hang Li; Denis-Alexandre Trottier; Jun Li; Aharon Brodutch; Anthony P. Krismanich; Ahmad Ghavami; Gary I. Dmitrienko; Guilu Long; Jonathan Baugh; Raymond Laflamme

    2014-11-28T23:59:59.000Z

    Quantum gates in experiment are inherently prone to errors that need to be characterized before they can be corrected. Full characterization via quantum process tomography is impractical and often unnecessary. For most practical purposes, it is enough to estimate more general quantities such as the average fidelity. Here we use a unitary 2-design and twirling protocol for efficiently estimating the average fidelity of Clifford gates, to certify a 7-qubit entangling gate in a nuclear magnetic resonance quantum processor. Compared with more than $10^8$ experiments required by full process tomography, we conducted 1656 experiments to satisfy a statistical confidence level of 99%. The average fidelity of this Clifford gate in experiment is 55.1%, and rises to 87.5% if the infidelity due to decoherence is removed. The entire protocol of certifying Clifford gates is efficient and scalable, and can easily be extended to any general quantum information processor with minor modifications.

  1. A simple template-based transfer method to fabricate Bradbury–Nielsen gates with uniform tension for ion mobility spectrometry

    SciTech Connect (OSTI)

    Kai, Ni, E-mail: ni.kai@sz.tsinghua.edu.cn; Jingran, Guo; Guangli, Ou; Yu, Lei; Quan, Yu; Xiang, Qian; Xiaohao, Wang [Division of Advanced Manufacturing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055 (China)

    2014-08-15T23:59:59.000Z

    A Bradbury–Nielsen gate (BNG) consists of two interleaved and electrically isolated sets of wires. It is usually used to gate or modulate ion beams. Uniformly tense wires can remain parallel, equidistant, and coplanar over a wide working temperature range, which is critical to reliable BNG performance. Hence, this study analyzes the non-uniform tension of wires wound using traditional sequential winding methods in which the elastic modulus of the metal wire is much larger than that of the insulation substrate. To address this problem, a simple and reliable template-based transfer method is developed. First, a template with large elastic modulus is used to fabricate a wire mesh with uniform tension. The mesh is then transferred to the substrate. Theoretically, this method reduces the non-uniformity of the tension in wires to less than 2%; therefore, it is used to construct a BNG with stainless steel wire, a stainless steel template, and a printed circuit board substrate. The BNG was installed in our homebuilt ion mobility spectrometer. To confirm that the performance of the BNG meets the requirements of portable ion mobility spectrometry, signal intensity and resolution (approximately 30) were experimentally determined.

  2. A CAD tool for the power estimation of CMOS, BiCMOS and BiNMOS gates

    E-Print Network [OSTI]

    Islam, Kazi Inamul

    1995-01-01T23:59:59.000Z

    This thesis describes a CAD tool for the power estimation of CMOS, BiCMOS and BiNMOS gates. Using analytical models for the transient behavior of the gates, accurate estimates of the power dissipated by each type of gate during a typical transition...

  3. PACIFIC SOUTHWEST Forest and Range

    E-Print Network [OSTI]

    Standiford, Richard B.

    of forest stands is valuable for studies of the physical environment. Energy balance research centers on howPACIFIC SOUTHWEST Forest and Range Experiment Station FOREST SERVICE U.S. DEPARTMENT in relation to climatic and stand variables USDA FOREST SERVICE RESEARCH PAPER PSW- 71 /1971 #12;CONTENTS

  4. PACIFIC SOUTHWEST Forest and Range

    E-Print Network [OSTI]

    Standiford, Richard B.

    C. Hathaway, both of the Black Hills National Forest, Custer, South Dakota, provided the necessaryPACIFIC SOUTHWEST Forest and Range FOREST SERVICE U. S.DEPARTMENT OF AGRICULTURE P.O. BOX 245, BERKELEY, CALIFORNIA 94701 Experiment Station USDA FOREST SERVICE RESEARCH PAPER PSW- 96 /1973 #12;CONTENTS

  5. Pacific Southwest Forest and Range

    E-Print Network [OSTI]

    Standiford, Richard B.

    . MCKETTA is an economist with the College of Forestry, Wildlife, and Range Sciences, University of Idaho has been developed for determining the cost of Fire Management Inputs (FMls)-the direct frreline costs, economic costs, fire economics, suppression costs, Fire Economics Evaluation System (FEES

  6. 3741SPACE AUDIT PROCEDURE Space audit

    E-Print Network [OSTI]

    Page 1 3741SPACE AUDIT PROCEDURE Space audit identified to be conducted Will audit disrupt or disturb occupants of the space Notify Faculty, School or Business Unit of the audit Is the audit for timetabling purposes Is the audit a physical audit Confirm audit requirements Is the audit for other space

  7. UNIVERSITY SPACE POLICY ALLOCATION OF UNIVERSITY SPACE

    E-Print Network [OSTI]

    UNIVERSITY COLLEGE DUBLIN UNIVERSITY SPACE POLICY #12;ALLOCATION OF UNIVERSITY SPACE I Purpose To provide a methodology for the allocation of space across the University II Background Due to the university's success in attracting research funding, the need for space and facilities has grown

  8. COMMERCIAL SPACE ACCOMPLISHMENTS Commercial Cargo Space Accomplishments

    E-Print Network [OSTI]

    Waliser, Duane E.

    11/13/2013 COMMERCIAL SPACE ACCOMPLISHMENTS Commercial Cargo Space Accomplishments The Obama Administration's ambitious commercial space program, which has bipartisan support in Congress, has enabled NASA's successful partnership with two American companies now able to resupply the station - SpaceX and Orbital

  9. After-gate attack on a quantum cryptosystem

    E-Print Network [OSTI]

    Carlos Wiechers; Lars Lydersen; Christoffer Wittmann; Dominique Elser; Johannes Skaar; Christoph Marquardt; Vadim Makarov; Gerd Leuchs

    2010-09-14T23:59:59.000Z

    We present a method to control the detection events in quantum key distribution systems that use gated single-photon detectors. We employ bright pulses as faked states, timed to arrive at the avalanche photodiodes outside the activation time. The attack can remain unnoticed, since the faked states do not increase the error rate per se. This allows for an intercept-resend attack, where an eavesdropper transfers her detection events to the legitimate receiver without causing any errors. As a side effect, afterpulses, originating from accumulated charge carriers in the detectors, increase the error rate. We have experimentally tested detectors of the system id3110 (Clavis2) from ID Quantique. We identify the parameter regime in which the attack is feasible despite the side effect. Furthermore, we outline how simple modifications in the implementation can make the device immune to this attack.

  10. Electrically-gated near-field radiative thermal transistor

    E-Print Network [OSTI]

    Yang, Yue

    2015-01-01T23:59:59.000Z

    In this work, we propose a near-field radiative thermal transistor made of two graphene-covered silicon carbide (SiC) plates separated by a nanometer vacuum gap. Thick SiC plates serve as the thermal "source" and "drain", while graphene sheets function as the "gate" to modulate the near-field photon tunneling by tuning chemical potential with applied voltage biases symmetrically or asymmetrically. The radiative heat flux calculated from fluctuational electrodynamics significantly varies with graphene chemical potentials, which can tune the coupling between graphene plasmon across the vacuum gap. Thermal modulation, switching, and amplification, which are the key features required for a thermal transistor, are theoretically realized and analyzed. This work will pave the way to active thermal management, thermal circuits, and thermal computing.

  11. Gas-controlled dynamic vacuum insulation with gas gate

    DOE Patents [OSTI]

    Benson, D.K.; Potter, T.F.

    1994-06-07T23:59:59.000Z

    Disclosed is a dynamic vacuum insulation comprising sidewalls enclosing an evacuated chamber and gas control means for releasing hydrogen gas into a chamber to increase gas molecule conduction of heat across the chamber and retrieving hydrogen gas from the chamber. The gas control means includes a metal hydride that absorbs and retains hydrogen gas at cooler temperatures and releases hydrogen gas at hotter temperatures; a hydride heating means for selectively heating the metal hydride to temperatures high enough to release hydrogen gas from the metal hydride; and gate means positioned between the metal hydride and the chamber for selectively allowing hydrogen to flow or not to flow between said metal hydride and said chamber. 25 figs.

  12. Gas-controlled dynamic vacuum insulation with gas gate

    DOE Patents [OSTI]

    Benson, David K. (Golden, CO); Potter, Thomas F. (Denver, CO)

    1994-06-07T23:59:59.000Z

    Disclosed is a dynamic vacuum insulation comprising sidewalls enclosing an evacuated chamber and gas control means for releasing hydrogen gas into a chamber to increase gas molecule conduction of heat across the chamber and retrieving hydrogen gas from the chamber. The gas control means includes a metal hydride that absorbs and retains hydrogen gas at cooler temperatures and releases hydrogen gas at hotter temperatures; a hydride heating means for selectively heating the metal hydride to temperatures high enough to release hydrogen gas from the metal hydride; and gate means positioned between the metal hydride and the chamber for selectively allowing hydrogen to flow or not to flow between said metal hydride and said chamber.

  13. How to upload a physical state to the correlation space

    E-Print Network [OSTI]

    Tomoyuki Morimae

    2010-10-22T23:59:59.000Z

    In the framework of the computational tensor network [D. Gross and J. Eisert, Phys. Rev. Lett. {\\bf98}, 220503 (2007)], the quantum computation is performed in a virtual linear space which is called the correlation space. It was recently shown [J. M. Cai, W, D\\"ur, M. Van den Nest, A. Miyake, and H. J. Briegel, Phys. Rev. Lett. {\\bf103}, 050503 (2009)] that a state in the correlation space can be downloaded to the real physical space. In this letter, conversely, we study how to upload a state from a real physical space to the correlation space being motivated by the virtual-real hybrid quantum information processing. After showing the impossibility of the cloning of a state between the real physical space and the correlation space, we propose a simple teleportation-like method of the upload. Applications of this method also enable the Gottesman-Chuang gate teleportation trick and the entanglement swapping in the virtual-real hybrid setting. Furthermore, compared with the inverse of the downloading method by Cai, et. al., which also works as the upload, our uploading method has several advantages.

  14. Demonstration of a fully tuneable entangling gate for continuous-variable one-way quantum computation

    E-Print Network [OSTI]

    Shota Yokoyama; Ryuji Ukai; Seiji C. Armstrong; Jun-ichi Yoshikawa; Peter van Loock; Akira Furusawa

    2014-10-02T23:59:59.000Z

    We introduce a fully tuneable entangling gate for continuous-variable one-way quantum computation. We present a proof-of-principle demonstration by propagating two independent optical inputs through a three-mode linear cluster state and applying the gate in various regimes. The genuine quantum nature of the gate is confirmed by verifying the entanglement strength in the output state. Our protocol can be readily incorporated into efficient multi-mode interaction operations in the context of large-scale one-way quantum computation, as our tuning process is the generalisation of cluster state shaping.

  15. Stripline microchannel plate image intensifier tubes (MCPTS) for nanosecond optical gating applications

    SciTech Connect (OSTI)

    Yates, G.J.; Jaramillo, S.A.; Zagarino, P.; Thomas, M.

    1986-01-01T23:59:59.000Z

    Shuttering characteristics of low impedance stripline geometry microchannel plate image intensifier tubes (MCPTs) with 50% transmissive nickel undercoated S-20 photocathodes are discussed. Iris-free shutter sequences with 50 to 75 micron resolution at optical gate times of 500ps to 2ns were measured for typical samples from two manufacturers. Shutter sequences clearly showing gate pulse propagation velocities for this MCPT design when externally driven by impedance matched circuitry are contrasted with non-directional sequences obtained from unmatched coupling of the gate pulse. 7 refs., 7 figs.

  16. Gates controlled parallel-coupled double quantum dot on both single layer and bilayer graphene

    E-Print Network [OSTI]

    Lin-Jun Wang; Guo-Ping Guo; Da Wei; Gang Cao; Tao Tu; Ming Xiao; Guang-Can Guo; A. M. Chang

    2011-04-22T23:59:59.000Z

    Here we report the fabrication and quantum transport measurements of gates controlled parallel-coupled double quantum dot on both bilayer and single layer graphene. It is shown that the interdot coupling strength of the parallel double dots can be effectively tuned from weak to strong regime by both the in-plane plunger gates and back gate. All the relevant energy scales and parameters of the graphene parallel-coupled double dot can be extracted from the honeycomb charge stability diagrams revealed through the transport measurements.

  17. Repeat-until-success cubic phase gate for universal continuous-variable quantum computation

    E-Print Network [OSTI]

    Kevin Marshall; Raphael Pooser; George Siopsis; Christian Weedbrook

    2014-12-01T23:59:59.000Z

    In order to achieve universal quantum computation using continuous variables, one needs to jump out of the set of Gaussian operations and have a non-Gaussian element, such as the cubic phase gate. However, such a gate is currently very difficult to implement in practice. Here we introduce an experimentally viable 'repeat-until-success' approach to generating the cubic phase gate, which is achieved using sequential photon subtractions and Gaussian operations. We find that our scheme offers benefits in terms of the expected time until success, although we require a primitive quantum memory.

  18. Extended-range tiltable micromirror

    DOE Patents [OSTI]

    Allen, James J. (Albuquerque, NM); Wiens, Gloria J. (Newberry, FL); Bronson, Jessica R. (Gainesville, FL)

    2009-05-05T23:59:59.000Z

    A tiltable micromirror device is disclosed in which a micromirror is suspended by a progressive linkage with an electrostatic actuator (e.g. a vertical comb actuator or a capacitive plate electrostatic actuator) being located beneath the micromirror. The progressive linkage includes a pair of torsion springs which are connected together to operate similar to a four-bar linkage with spring joints. The progressive linkage provides a non-linear spring constant which can allow the micromirror to be tilted at any angle within its range substantially free from any electrostatic instability or hysteretic behavior.

  19. Range Fuels | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar PowerstoriesNrelPartnerType Jump to:Co JumpRETScreen Logo: Range Fuels Name:

  20. Qualification of a high-efficiency, gated spectrometer for x-ray Thomson scattering on the National Ignition Facility

    SciTech Connect (OSTI)

    Döppner, T.; Kritcher, A. L.; Bachmann, B.; Burns, S.; Hawreliak, J.; House, A.; Landen, O. L.; LePape, S.; Ma, T.; Pak, A.; Swift, D. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Neumayer, P. [Gesellschaft für Schwerionenphysik, 64291 Darmstadt (Germany); Kraus, D. [University of California, Berkeley, California 94720 (United States); Falcone, R. W. [University of California, Berkeley, California 94720 (United States); Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Glenzer, S. H. [SLAC National Accelerator Laboratory, Menlo Park, California 94309 (United States)

    2014-11-15T23:59:59.000Z

    We have designed, built, and successfully fielded a highly efficient and gated Bragg crystal spectrometer for x-ray Thomson scattering measurements on the National Ignition Facility (NIF). It utilizes a cylindrically curved Highly Oriented Pyrolytic Graphite crystal. Its spectral range of 7.4–10?keV is optimized for scattering experiments using a Zn He-? x-ray probe at 9.0 keV or Mo K-shell line emission around 18 keV in second diffraction order. The spectrometer has been designed as a diagnostic instrument manipulator-based instrument for the NIF target chamber at the Lawrence Livermore National Laboratory, USA. Here, we report on details of the spectrometer snout, its novel debris shield configuration and an in situ spectral calibration experiment with a Brass foil target, which demonstrated a spectral resolution of E/?E = 220 at 9.8 keV.

  1. SRP4760R List of Lots By Purchaser As at :-13-feb-2013:08:07 CENTRAL ENGLAND (Wharncliffe Plank Gate)

    E-Print Network [OSTI]

    ENGLAND (Wharncliffe Plank Gate) CENTRAL ENGLAND (Coach Road) NORTH ENGLAND (Guns Crag (Redesdale)) NORTH

  2. Live Fire Range Environmental Assessment

    SciTech Connect (OSTI)

    None

    1993-08-01T23:59:59.000Z

    The Central Training Academy (CTA) is a DOE Headquarters Organization located in Albuquerque, New Mexico, with the mission to effectively and efficiently educate and train personnel involved in the protection of vital national security interests of DOE. The CTA Live Fire Range (LFR), where most of the firearms and tactical training occurs, is a complex separate from the main campus. The purpose of the proposed action is to expand the LFR to allow more options of implementing required training. The Department of Energy has prepared this Environmental Assessment (EA) for the proposed construction and operation of an expanded Live Fire Range Facility at the Central Training Academy in Albuquerque, New Mexico. Based on the analysis in the EA, DOE has determined that the proposed action is not a major Federal action significantly affecting the quality of the human environment, within the meaning of the National Environmental Policy Act (NEPA) of 1969. Therefore, the preparation of an environmental impact statement is not required and DOE is issuing this Finding of No Significant Impact (FONSI).

  3. CRYSTALLOGRAPHIC POINT AND SPACE

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    CRYSTALLOGRAPHIC POINT AND SPACE GROUPS Andy Elvin June 10, 2013 #12;Contents Point and Space no reflection axes #12;Cube and Octahedron are dual Symmetries under Oh #12;Space Groups Subgroups of E(3) Point Group + Translation { R | 0 }{ E | t }a = { R | t }a = Ra + t 230 Space Groups 73 symmorphic space

  4. A linear programming solution to the gate assignment problem at airport terminals

    E-Print Network [OSTI]

    Mangoubi, Rami

    1980-01-01T23:59:59.000Z

    This research solves the flight-to-gate assignment problem at airports in such a way as to minimize, or at least reduce, walking distances for passengers inside terminals. Two solution methods are suggested. The first is ...

  5. E-Print Network 3.0 - arbitrary phase gates Sample Search Results

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

    << < 1 2 3 4 5 > >> Page: << < 1 2 3 4 5 > >> 41 Optical simulation of quantum logic N. J. Cerf,1 Summary: of universal quantum gates using simple optical components beam...

  6. The civic forum in ancient Israel : the form, function, and symbolism of city gates

    E-Print Network [OSTI]

    Frese, Daniel Allan

    2012-01-01T23:59:59.000Z

    of City Gates by Daniel Allan Frese Doctor of Philosophy inC. Michael Hall, and Allan M. Williams. Oxford: Blackwell,in History by Daniel Allan Frese Committee in Charge:

  7. All-Optical Switch and Transistor Gated by One Stored Photon

    E-Print Network [OSTI]

    Chen, Wenlan

    The realization of an all-optical transistor, in which one “gate” photon controls a “source” light beam, is a long-standing goal in optics. By stopping a light pulse in an atomic ensemble contained inside an optical ...

  8. E-Print Network 3.0 - affects voltage-gated calcium Sample Search...

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

    , 1115-1118 3 Dolphin, A.C. (2003) b subunits of voltage-gated calcium channels. J. Bioenerg. Biomembr... . 35, 599-620 4 Van Petegem, F. et al. (2004) Structure of a complex...

  9. Process fidelity estimation of linear optical quantum CZ gate: A comparative study

    E-Print Network [OSTI]

    M. Micuda; M. Sedlak; I. Straka; M. Mikova; M. Dusek; M. Jezek; J. Fiurasek

    2014-03-19T23:59:59.000Z

    We present a systematic comparison of different methods of fidelity estimation of a linear optical quantum controlled-Z gate implemented by two-photon interference on a partially polarizing beam splitter. We have utilized a linear fidelity estimator based on the Monte Carlo sampling technique as well as a non-linear estimator based on maximum likelihood reconstruction of a full quantum process matrix. In addition, we have also evaluated lower bound on quantum gate fidelity determined by average quantum state fidelities for two mutually unbiased bases. In order to probe various regimes of operation of the gate we have introduced a tunable delay line between the two photons. This allowed us to move from high-fidelity operation to a regime where the photons become distinguishable and the success probability of the scheme significantly depends on input state. We discuss in detail possible systematic effects that could influence the gate fidelity estimation.

  10. Ligand-Gated Chloride Channels Are Receptors for Biogenic Amines in C. elegans

    E-Print Network [OSTI]

    Ringstad, Niels

    Biogenic amines such as serotonin and dopamine are intercellular signaling molecules that function widely as neurotransmitters and neuromodulators. We have identified in the nematode Caenorhabditis elegans three ligand-gated ...

  11. Transient Turbulent Flow Simulation with Water Model Validation and Application to Slide Gate Dithering

    E-Print Network [OSTI]

    Thomas, Brian G.

    ) 244-6534 Email: bgthomas@illinois.edu Bruce Forman and Hongbin Yin ArcelorMittal Global R&D East) 399-3899 Email: bruce.forman@arcelormittal.com, Hongbin.Yin@arcelormittal.com ABSTRACT Slide gate

  12. pH sensing properties of graphene solution-gated field-effect transistors

    E-Print Network [OSTI]

    Mailly-Giacchetti, Benjamin

    2013-01-01T23:59:59.000Z

    The use of graphene grown by chemical vapor deposition to fabricate solution-gated field-effect transistors (SGFET) on different substrates is reported. SGFETs were fabricated using graphene transferred on poly(ethylene ...

  13. Vehicle Technologies Office Merit Review 2014: GATE: Energy Efficient Vehicles for Sustainable Mobility

    Broader source: Energy.gov [DOE]

    Presentation given by Ohio State University at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about GATE: energy efficient...

  14. Vehicle Technologies Office Merit Review 2014: DOE GATE Center of Excellence in Sustainable Vehicle Systems

    Broader source: Energy.gov [DOE]

    Presentation given by Clemson University at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about DOE GATE Center of...

  15. Sculpting space through sound

    E-Print Network [OSTI]

    Nakagawa, Junko, 1975-

    2002-01-01T23:59:59.000Z

    How does one experience space? What kind of information do humans collect in the process of constructing space in their mind? How does one begin to understand volume, light, texture, material, smell and sense of space? The ...

  16. Space Solar Power Program

    SciTech Connect (OSTI)

    Arif, H.; Barbosa, H.; Bardet, C.; Baroud, M.; Behar, A.; Berrier, K.; Berthe, P.; Bertrand, R.; Bibyk, I.; Bisson, J.; Bloch, L.; Bobadilla, G.; Bourque, D.; Bush, L.; Carandang, R.; Chiku, T.; Crosby, N.; De Seixas, M.; De Vries, J.; Doll, S.; Dufour, F.; Eckart, P.; Fahey, M.; Fenot, F.; Foeckersperger, S.; Fontaine, J.E.; Fowler, R.; Frey, H.; Fujio, H.; Gasa, J.M.; Gleave, J.; Godoe, J.; Green, I.; Haeberli, R.; Hanada, T.; Ha

    1992-08-01T23:59:59.000Z

    Information pertaining to the Space Solar Power Program is presented on energy analysis; markets; overall development plan; organizational plan; environmental and safety issues; power systems; space transportation; space manufacturing, construction, operations; design examples; and finance.

  17. Quantum Complex Minkowski Space

    E-Print Network [OSTI]

    Grzegorz Jakimowicz; Anatol Odzijewicz

    2005-05-06T23:59:59.000Z

    The complex Minkowski phase space has the physical interpretation of the phase space of the scalar massive conformal particle. The aim of the paper is the construction and investigation of the quantum complex Minkowski space.

  18. AN AUTOZEROING FLOATING-GATE BANDPASS FILTER Paul Hasler, Bradley A. Minch, and Chris Diorio

    E-Print Network [OSTI]

    Diorio, Chris

    is the thermal Figure 1: An autozeroing oating-gate ampli er AFGA that uses pFET hot-electron injection a bandpass oating-gate ampli er that uses tunneling and pFET hot-electron injection to set its DC operating the current through the pFET. Steady state occurs when the injection current is equal to the tunneling current

  19. A review of "Gate of Heaven." by Abraham Cohen de Herrera

    E-Print Network [OSTI]

    William E. Engel

    2003-01-01T23:59:59.000Z

    , and always with a complex sensation compounded of affinity with, and unbridgeable distance from, the man whose pen marked the pages so idiosyncratically. Abraham Cohen de Herrera. Gate of Heaven. Translated from the Spanish with Introduction and Notes... ready access to Herrera?s Gate of Heaven. Not only is this the first English translation of Puerta del Cielo, but it is also the first complete annotated edition of 198 SEVENTEENTH-CENTURY NEWS this important work of Jewish mysticism in any language...

  20. Periodic Discrete Energy for Long-Range Potentials

    E-Print Network [OSTI]

    D. P. Hardin; E. B. Saff; Brian Simanek

    2014-12-11T23:59:59.000Z

    We consider periodic energy problems in Euclidean space with a special emphasis on long-range potentials that cannot be defined through the usual infinite sum. One of our main results builds on more recent developments of Ewald summation to define the periodic energy corresponding to a large class of long-range potentials. Two particularly interesting examples are the logarithmic potential and the Riesz potential when the Riesz parameter is smaller than the dimension of the space. For these examples, we use analytic continuation methods to provide concise formulas for the periodic kernel in terms of the Epstein Hurwitz Zeta function. We apply our energy definition to deduce several properties of the minimal energy including the asymptotic order of growth and the distribution of points in energy minimizing configurations as the number of points becomes large. We conclude with some detailed calculations in the case of one dimension, which shows the utility of this approach.

  1. Wide-range radioactive-gas-concentration detector

    DOE Patents [OSTI]

    Anderson, D.F.

    1981-11-16T23:59:59.000Z

    A wide-range radioactive-gas-concentration detector and monitor capable of measuring radioactive-gas concentrations over a range of eight orders of magnitude is described. The device is designed to have an ionization chamber sufficiently small to give a fast response time for measuring radioactive gases but sufficiently large to provide accurate readings at low concentration levels. Closely spaced parallel-plate grids provide a uniform electric field in the active region to improve the accuracy of measurements and reduce ion migration time so as to virtually eliminate errors due to ion recombination. The parallel-plate grids are fabricated with a minimal surface area to reduce the effects of contamination resulting from absorption of contaminating materials on the surface of the grids. Additionally, the ionization-chamber wall is spaced a sufficient distance from the active region of the ionization chamber to minimize contamination effects.

  2. Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing

    E-Print Network [OSTI]

    R. Barends; J. Kelly; A. Megrant; A. Veitia; D. Sank; E. Jeffrey; T. C. White; J. Mutus; A. G. Fowler; B. Campbell; Y. Chen; Z. Chen; B. Chiaro; A. Dunsworth; C. Neill; P. O`Malley; P. Roushan; A. Vainsencher; J. Wenner; A. N. Korotkov; A. N. Cleland; John M. Martinis

    2014-02-19T23:59:59.000Z

    A quantum computer can solve hard problems - such as prime factoring, database searching, and quantum simulation - at the cost of needing to protect fragile quantum states from error. Quantum error correction provides this protection, by distributing a logical state among many physical qubits via quantum entanglement. Superconductivity is an appealing platform, as it allows for constructing large quantum circuits, and is compatible with microfabrication. For superconducting qubits the surface code is a natural choice for error correction, as it uses only nearest-neighbour coupling and rapidly-cycled entangling gates. The gate fidelity requirements are modest: The per-step fidelity threshold is only about 99%. Here, we demonstrate a universal set of logic gates in a superconducting multi-qubit processor, achieving an average single-qubit gate fidelity of 99.92% and a two-qubit gate fidelity up to 99.4%. This places Josephson quantum computing at the fault-tolerant threshold for surface code error correction. Our quantum processor is a first step towards the surface code, using five qubits arranged in a linear array with nearest-neighbour coupling. As a further demonstration, we construct a five-qubit Greenberger-Horne-Zeilinger (GHZ) state using the complete circuit and full set of gates. The results demonstrate that Josephson quantum computing is a high-fidelity technology, with a clear path to scaling up to large-scale, fault-tolerant quantum circuits.

  3. GATE Center of Excellence at UAB in Lightweight Materials for Automotive Applications

    SciTech Connect (OSTI)

    None

    2011-07-31T23:59:59.000Z

    This report summarizes the accomplishments of the UAB GATE Center of Excellence in Lightweight Materials for Automotive Applications. The first Phase of the UAB DOE GATE center spanned the period 2005-2011. The UAB GATE goals coordinated with the overall goals of DOE's FreedomCAR and Vehicles Technologies initiative and DOE GATE program. The FCVT goals are: (1) Development and validation of advanced materials and manufacturing technologies to significantly reduce automotive vehicle body and chassis weight without compromising other attributes such as safety, performance, recyclability, and cost; (2) To provide a new generation of engineers and scientists with knowledge and skills in advanced automotive technologies. The UAB GATE focused on both the FCVT and GATE goals in the following manner: (1) Train and produce graduates in lightweight automotive materials technologies; (2) Structure the engineering curricula to produce specialists in the automotive area; (3) Leverage automotive related industry in the State of Alabama; (4) Expose minority students to advanced technologies early in their career; (5) Develop innovative virtual classroom capabilities tied to real manufacturing operations; and (6) Integrate synergistic, multi-departmental activities to produce new product and manufacturing technologies for more damage tolerant, cost-effective, and lighter automotive structures.

  4. Magic State Distillation and Gate Compilation in Quantum Algorithms for Quantum Chemistry

    E-Print Network [OSTI]

    Colin J. Trout; Kenneth R. Brown

    2015-01-29T23:59:59.000Z

    Quantum algorithms for quantum chemistry map the dynamics of electrons in a molecule to the dynamics of a coupled spin system. To reach chemical accuracy for interesting molecules, a large number of quantum gates must be applied which implies the need for quantum error correction and fault-tolerant quantum computation. Arbitrary fault-tolerant operations can be constructed from a small, universal set of fault-tolerant operations by gate compilation. Quantum chemistry algorithms are compiled by decomposing the dynamics of the coupled spin-system using a Trotter formula, synthesizing the decomposed dynamics using Clifford operations and single-qubit rotations, and finally approximating the single-qubit rotations by a sequence of fault-tolerant single-qubit gates. Certain fault-tolerant gates rely on the preparation of specific single-qubit states referred to as magic states. As a result, gate compilation and magic state distillation are critical for solving quantum chemistry problems on a quantum computer. We review recent progress that has improved the efficiency of gate compilation and magic state distillation by orders of magnitude.

  5. Correlation of gross tumor volume excursion with potential benefits of respiratory gating

    SciTech Connect (OSTI)

    Starkschall, George [Department of Radiation Physics, University of Texas M.D. Anderson Cancer Center, Houston, TX (United States)]. E-mail: gstarksc@mdanderson.org; Forster, Kenneth M. [Department of Radiation Physics, University of Texas M.D. Anderson Cancer Center, Houston, TX (United States); Kitamura, Kei [Department of Radiation Physics, University of Texas M.D. Anderson Cancer Center, Houston, TX (United States); Department of Radiology, Hokkaido University, Graduate School of Medicine, Sapporo (Japan); Cardenas, Alex [Department of Radiation Physics, University of Texas M.D. Anderson Cancer Center, Houston, TX (United States); Tucker, Susan L. [Department of Biomathematics, University of Texas M.D. Anderson Cancer Center, Houston, TX (United States); Stevens, Craig W. [Department of Radiation Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX (United States)

    2004-11-15T23:59:59.000Z

    Purpose: To test the hypothesis that the magnitude of thoracic tumor motion can be used to determine the desirability of respiratory gating. Methods and materials: Twenty patients to be treated for lung tumors had computed tomography image data sets acquired under assisted breath hold at normal inspiration (100% tidal volume), at full expiration (0% tidal volume), and under free breathing. A radiation oncologist outlined gross tumor volumes (GTVs) on the breath-hold computed tomographic images. These data sets were registered to the free-breathing image data set. Two sets of treatment plans were generated: one based on an internal target volume explicitly formed from assessment of the excursion of the clinical target volume (CTV) through the respiratory cycle, representing an ungated treatment, and the other based on the 0% tidal volume CTV, representing a gated treatment with little margin for residual motion. Dose-volume statistics were correlated to the magnitude of the motion of the center of the GTV during respiration. Results: Patients whose GTVs were >100 cm{sup 3} showed little decrease in lung dose under gating. The other patients showed a correlation between the excursion of the center of the GTV and a reduction in potential lung toxicity. As residual motion increased, the benefits of respiratory gating increased. Conclusion: Gating seems to be advantageous for patients whose GTVs are <100 cm{sup 3} and for whom the center of the GTV exhibits significant motion, provided residual motion under gating is kept small.

  6. Magic State Distillation and Gate Compilation in Quantum Algorithms for Quantum Chemistry

    E-Print Network [OSTI]

    Colin J. Trout; Kenneth R. Brown

    2015-01-07T23:59:59.000Z

    Quantum algorithms for quantum chemistry map the dynamics of electrons in a molecule to the dynamics of a coupled spin system. To reach chemical accuracy for interesting molecules, a large number of quantum gates must be applied which implies the need for quantum error correction and fault-tolerant quantum computation. Arbitrary fault-tolerant operations can be constructed from a small, universal set of fault-tolerant operations by gate compilation. Quantum chemistry algorithms are compiled by decomposing the dynamics of the coupled spin-system using a Trotter formula, synthesizing the decomposed dynamics using Clifford operations and single-qubit rotations, and finally approximating the single-qubit rotations by a sequence of fault-tolerant single-qubit gates. Certain fault-tolerant gates rely on the preparation of specific single-qubit states referred to as magic states. As a result, gate compilation and magic state distillation are critical for solving quantum chemistry problems on a quantum computer. We review recent progress that has improved the efficiency of gate compilation and magic state distillation by orders of magnitude.

  7. Space Science and Applications

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

    1 Space Science and Applications Applying world-class expertise in space sciences and associated technologies to detect and characterize national security threats Contacts Group...

  8. New VLSI complexity results for threshold gate comparison

    SciTech Connect (OSTI)

    Beiu, V.

    1996-12-31T23:59:59.000Z

    The paper overviews recent developments concerning optimal (from the point of view of size and depth) implementations of COMPARISON using threshold gates. We detail a class of solutions which also covers another particular solution, and spans from constant to logarithmic depths. These circuit complexity results are supplemented by fresh VLSI complexity results having applications to hardware implementations of neural networks and to VLSI-friendly learning algorithms. In order to estimate the area (A) and the delay (T), as well as the classical AT{sup 2}, we shall use the following {open_quote}cost functions{close_quote}: (i) the connectivity (i.e., sum of fan-ins) and the number-of-bits for representing the weights and thresholds are used as closer approximations of the area; while (ii) the fan-ins and the length of the wires are used for closer estimates of the delay. Such approximations allow us to compare the different solutions-which present very interesting fan-in dependent depth-size and area-delay tradeoffs - with respect to AT{sup 2}.

  9. Space Decompositions: Theory and Practice Paulo Cezar Pinto Carvalho 1

    E-Print Network [OSTI]

    Space Decompositions: Theory and Practice Paulo Cezar Pinto Carvalho 1 Jonas de Miranda Gomes 1 The use of space decompositions in Mathematics ranges from Algebraic Topology to Numerical Analysis. The existence of certain subdivisions of a space allows us to obtain valuable information about the geometry

  10. Wide-range voltage modulation

    SciTech Connect (OSTI)

    Rust, K.R.; Wilson, J.M.

    1992-06-01T23:59:59.000Z

    The Superconducting Super Collider`s Medium Energy Booster Abort (MEBA) kicker modulator will supply a current pulse to the abort magnets which deflect the proton beam from the MEB ring into a designated beam stop. The abort kicker will be used extensively during testing of the Low Energy Booster (LEB) and the MEB rings. When the Collider is in full operation, the MEBA kicker modulator will abort the MEB beam in the event of a malfunction during the filling process. The modulator must generate a 14-{mu}s wide pulse with a rise time of less than 1 {mu}s, including the delay and jitter times. It must also be able to deliver a current pulse to the magnet proportional to the beam energy at any time during ramp-up of the accelerator. Tracking the beam energy, which increases from 12 GeV at injection to 200 GeV at extraction, requires the modulator to operate over a wide range of voltages (4 kV to 80 kV). A vacuum spark gap and a thyratron have been chosen for test and evaluation as candidate switches for the abort modulator. Modulator design, switching time delay, jitter and pre-fire data are presented.

  11. Practical Analysis of a New Type Radiant Heating Technology in a Large Space Building

    E-Print Network [OSTI]

    Feng, G.; Cao, G.; Gang, L.

    2006-01-01T23:59:59.000Z

    ICEBO2006, Shenzhen, China Heating technologies fo r energy efficiency Vol.III-3-4 Practical Analysis of a New Type Radiant Heating Technology in a Large Space Building Guohui Feng Guangyu Cao Li Gang Ph.D. Ph... achieve above 95%. Since not heating up indoor air, it is specially suited for heating of factory buildings where the conditions of heat preservation and sealing are poor and their gates are opened frequently. The off-on of radiation heating system...

  12. Space Shuttle Program Status

    E-Print Network [OSTI]

    Waliser, Duane E.

    1 Space Shuttle Program Status John Casper Associate Manager Space Shuttle Program September 13, 2010 NAC Space Operations Committee #12;2 Operations #12;3 Flown Manifest March 2009 ­ May 2010 #12, 2010 · 132nd Space Shuttle mission · 32nd Flight of Atlantis (120,650,907 statute miles) · 294 Total

  13. Space Complexity Algorithms & Complexity

    E-Print Network [OSTI]

    Way, Andy

    Space Complexity Algorithms & Complexity Space Complexity Nicolas Stroppa Patrik Lambert - plambert@computing.dcu.ie CA313@Dublin City University. 2008-2009. December 4, 2008 #12;Space Complexity Hierarchy of problems #12;Space Complexity NP-intermediate Languages If P = NP, then are there languages which neither in P

  14. Space System Architecture

    E-Print Network [OSTI]

    McManus, Dr. Hugh

    Final Report of SSPARC: the Space Systems, Policy, and Architecture Research Consortium (Thrust II and III)

  15. In Outer Space without a Space Suit?

    E-Print Network [OSTI]

    Alexander Bolonkin

    2008-06-24T23:59:59.000Z

    The author proposes and investigates his old idea - a living human in space without the encumbrance of a complex space suit. Only in this condition can biological humanity seriously attempt to colonize space because all planets of Solar system (except the Earth) do not have suitable atmospheres. Aside from the issue of temperature, a suitable partial pressure of oxygen is lacking. In this case the main problem is how to satiate human blood with oxygen and delete carbonic acid gas (carbon dioxide). The proposed system would enable a person to function in outer space without a space suit and, for a long time, without food. That is useful also in the Earth for sustaining working men in an otherwise deadly atmosphere laden with lethal particulates (in case of nuclear, chemical or biological war), in underground confined spaces without fresh air, under water or a top high mountains above a height that can sustain respiration.

  16. Atomically flat La-silicate/Si interface using tungsten carbide gate electrode with nano-sized grain

    SciTech Connect (OSTI)

    Tuokedaerhan, K.; Natori, K.; Iwai, H. [Frontier Research Center, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan); Kakushima, K., E-mail: kakushima@ep.titech.ac.jp; Kataoka, Y.; Nishiyama, A.; Sugii, N.; Wakabayashi, H.; Tsutsui, K. [Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502 (Japan)

    2014-01-13T23:59:59.000Z

    Interface properties of La-silicate gate dielectrics on Si substrates with W or nano-sized grain W{sub 2}C gate electrodes have been investigated. A low interface state density of 2.5?×?10{sup 11}?cm{sup ?2}/eV has been achieved with W{sub 2}C gate electrodes, which is one third of those with W gate electrode. An interface roughness of 0.33?nm with spatial frequency comparable to the grain size of W gate electrode has been observed. Besides, an atomically flat interface of 0.12?nm has been obtained with W{sub 2}C gate electrode. The origin of flat interface may be attributed to the elimination of inhomogeneous stress by grains in metal electrode.

  17. Part I:Part I: Degradation in 3.2 nm Gate Oxides:Degradation in 3.2 nm Gate Oxides: Effects on Inverter Performance and MOSFETEffects on Inverter Performance and MOSFET

    E-Print Network [OSTI]

    Anlage, Steven

    on Inverter Performance and MOSFETEffects on Inverter Performance and MOSFET Characteristics.2 nm Gate Oxides: Effects on Inverter Performance and MOSFETEffects on Inverter Performance and MOSFET

  18. Exact solutions for a universal set of quantum gates on a family of iso-spectral spin chains

    E-Print Network [OSTI]

    V. Karimipour; N. Majd

    2005-09-25T23:59:59.000Z

    We find exact solutions for a universal set of quantum gates on a scalable candidate for quantum computers, namely an array of two level systems. The gates are constructed by a combination of dynamical and geometrical (non-Abelian) phases. Previously these gates have been constructed mostly on non-scalable systems and by numerical searches among the loops in the manifold of control parameters of the Hamiltonian.

  19. Water gate array for current flow or tidal movement pneumatic harnessing system

    DOE Patents [OSTI]

    Gorlov, Alexander M. (Brookline, MA)

    1991-01-01T23:59:59.000Z

    The invention, which provides a system for harnessing power from current flow or tidal movement in a body of water, comprises first and second hydro-pneumatic chambers each having ingress and egress below the water surface near the river or ocean floor and water gates operative to open or seal the ports to the passage of water. In an exemplary embodiment, the gates are sychronized by shafts so that the ingress ports of each chamber are connected to the egress ports of each other chamber. Thus, one set of gates is closed, while the other is open, thereby allowing water to flow into one chamber and build air pressure therein and allowing water to flow out of the other chamber and create a partial vacuum therein. A pipe connects the chambers, and an air turbine harnesses the air movement within the pipe. When water levels are equilibrated, the open set of gates is closed by a counterweight, and the other set is allowed to open by natural force of the water differential. The water gates may be comprised of a plurality of louvers which are ganged for simultaneous opening and closing. The system is designed to operate with air turbines or other pneumatic devices. Its design minimizes construction cost and environmental impact, yet provides a clean renewable energy source.

  20. UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence

    SciTech Connect (OSTI)

    Erickson, Paul

    2012-05-31T23:59:59.000Z

    This is the final report of the UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence which spanned from 2005-2012. The U.S. Department of Energy (DOE) established the Graduate Automotive Technology Education (GATE) Program, to provide a new generation of engineers and scientists with knowledge and skills to create advanced automotive technologies. The UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence established in 2005 is focused on research, education, industrial collaboration and outreach within automotive technology. UC Davis has had two independent GATE centers with separate well-defined objectives and research programs from 1998. The Fuel Cell Center, administered by ITS-Davis, has focused on fuel cell technology. The Hybrid-Electric Vehicle Design Center (HEV Center), administered by the Department of Mechanical and Aeronautical Engineering, has focused on the development of plug-in hybrid technology using internal combustion engines. The merger of these two centers in 2005 has broadened the scope of research and lead to higher visibility of the activity. UC Davisâ??s existing GATE centers have become the campusâ??s research focal points on fuel cells and hybrid-electric vehicles, and the home for graduate students who are studying advanced automotive technologies. The centers have been highly successful in attracting, training, and placing top-notch students into fuel cell and hybrid programs in both industry and government.

  1. Radar range measurements in the atmosphere.

    SciTech Connect (OSTI)

    Doerry, Armin Walter

    2013-02-01T23:59:59.000Z

    The earth's atmosphere affects the velocity of propagation of microwave signals. This imparts a range error to radar range measurements that assume the typical simplistic model for propagation velocity. This range error is a function of atmospheric constituents, such as water vapor, as well as the geometry of the radar data collection, notably altitude and range. Models are presented for calculating atmospheric effects on radar range measurements, and compared against more elaborate atmospheric models.

  2. Range Condition: Key to Sustained Ranch Productivity

    E-Print Network [OSTI]

    McGinty, Allan; White, Larry D.

    2000-04-25T23:59:59.000Z

    species composition is the criteria used to make this determination. Range condition is evaluated for each range site on a ranch. Range sites are areas with the potential for producing similar amounts and kinds of vegetation (for example, shallow hillside... site, deep upland site, draw site, etc.). Sites are determined by climatic, soil, topographic and vegetation features. A complete listing and description of all range sites on a ranch can be obtained from the Soil Conservation Service (SCS). Range...

  3. Josephson-junction arrays with long-range interactions J. Kent Harbaugh and D. Stroud

    E-Print Network [OSTI]

    Stroud, David

    Josephson-junction arrays with long-range interactions J. Kent Harbaugh and D. Stroud Department-voltage (IV) characteristics of a Josephson-junction array with long-range inter- actions. The array consists of two sets of equally spaced parallel superconducting wires placed at right angles. A Josephson junction

  4. Direct deposition of aluminum oxide gate dielectric on graphene channel using nitrogen plasma treatment

    SciTech Connect (OSTI)

    Lim, Taekyung; Kim, Dongchool; Ju, Sanghyun [Department of Physics, Kyonggi University, Suwon, Gyeonggi-Do 443-760 (Korea, Republic of)

    2013-07-01T23:59:59.000Z

    Deposition of high-quality dielectric on a graphene channel is an essential technology to overcome structural constraints for the development of nano-electronic devices. In this study, we investigated a method for directly depositing aluminum oxide (Al{sub 2}O{sub 3}) on a graphene channel through nitrogen plasma treatment. The deposited Al{sub 2}O{sub 3} thin film on graphene demonstrated excellent dielectric properties with negligible charge trapping and de-trapping in the gate insulator. A top-gate-structural graphene transistor was fabricated using Al{sub 2}O{sub 3} as the gate dielectric with nitrogen plasma treatment on graphene channel region, and exhibited p-type transistor characteristics.

  5. Optical imaging through turbid media with a degenerate four-wave mixing correlation time gate

    DOE Patents [OSTI]

    Sappey, Andrew D. (Golden, CO)

    1998-04-14T23:59:59.000Z

    Optical imaging through turbid media is demonstrated using a degenerate four-wave mixing correlation time gate. An apparatus and method for detecting ballistic and/or snake light while rejecting unwanted diffusive light for imaging structures within highly scattering media are described. Degenerate four-wave mixing (DFWM) of a doubled YAG laser in rhodamine 590 is used to provide an ultrafast correlation time gate to discriminate against light that has undergone multiple scattering and therefore has lost memory of the structures within the scattering medium. Images have been obtained of a test cross-hair pattern through highly turbid suspensions of whole milk in water that are opaque to the naked eye, which demonstrates the utility of DFWM for imaging through turbid media. Use of DFWM as an ultrafast time gate for the detection of ballistic and/or snake light in optical mammography is discussed.

  6. Quotients of Metric Spaces

    E-Print Network [OSTI]

    Herman, Robert A.

    1968-01-01T23:59:59.000Z

    the properties of quotient spaces of metric spaces. We will use "iff" as an abbreviation for "if and only if". If f is a function from X onto Y, we will write f: X --->> Y....

  7. Resilience of gated avalanche photodiodes against bright illumination attacks in quantum cryptography

    E-Print Network [OSTI]

    Z. L. Yuan; J. F. Dynes; A. J. Shields

    2011-06-14T23:59:59.000Z

    Semiconductor avalanche photodiodes (APDs) are commonly used for single photon detection in quantum key distribution. Recently, many attacks using bright illumination have been proposed to manipulate gated InGaAs APDs. In order to devise effective counter-measures, careful analysis of these attacks must be carried out to distinguish between incorrect operation and genuine loopholes. Here, we show that correctly-operated, gated APDs are immune to continuous-wave illumination attacks, while monitoring the photocurrent for anomalously high values is a straightforward counter-measure against attacks using temporally tailored light.

  8. Electronic transport mechanisms in scaled gate-all-around silicon nanowire transistor arrays

    SciTech Connect (OSTI)

    Clément, N., E-mail: nicolas.clement@iemn.univ-lille1.fr, E-mail: guilhem.larrieu@laas.fr; Han, X. L. [Institute of Electronics, Microelectronics and Nanotechnology, CNRS, Avenue Poincaré, 59652 Villeneuve d'Ascq (France)] [Institute of Electronics, Microelectronics and Nanotechnology, CNRS, Avenue Poincaré, 59652 Villeneuve d'Ascq (France); Larrieu, G., E-mail: nicolas.clement@iemn.univ-lille1.fr, E-mail: guilhem.larrieu@laas.fr [Laboratory for Analysis and Architecture of Systems (LAAS), CNRS, Universite de Toulouse, 7 Avenue Colonel Roche, 31077 Toulouse (France)

    2013-12-23T23:59:59.000Z

    Low-frequency noise is used to study the electronic transport in arrays of 14?nm gate length vertical silicon nanowire devices. We demonstrate that, even at such scaling, the electrostatic control of the gate-all-around is sufficient in the sub-threshold voltage region to confine charges in the heart of the wire, and the extremely low noise level is comparable to that of high quality epitaxial layers. Although contact noise can already be a source of poor transistor operation above threshold voltage for few nanowires, nanowire parallelization drastically reduces its impact.

  9. A proposal for the implementation of quantum gates with photonic-crystal coupled cavity waveguides

    E-Print Network [OSTI]

    Dimitris G. Angelakis; Marcelo Franca Santos; Vassilis Yannopapas; Artur Ekert

    2007-04-12T23:59:59.000Z

    Quantum computers require technologies that offer both sufficient control over coherent quantum phenomena and minimal spurious interactions with the environment. We show, that photons confined to photonic crystals, and in particular to highly efficient waveguides formed from linear chains of defects doped with atoms can generate strong non-linear interactions which allow to implement both single and two qubit quantum gates. The simplicity of the gate switching mechanism, the experimental feasibility of fabricating two dimensional photonic crystal structures and integrability of this device with optoelectronics offers new interesting possibilities for optical quantum information processing networks.

  10. Noise-Protected Gate for Six-Electron Double-Dot Qubits

    E-Print Network [OSTI]

    Sebastian Mehl; David P. DiVincenzo

    2014-08-05T23:59:59.000Z

    Singlet-triplet spin qubits in six-electron double quantum dots, in moderate magnetic fields, can show superior immunity to charge noise. This immunity results from the symmetry of orbitals in the second energy shell of circular quantum dots: singlet and triplet states in this shell have identical charge distributions. Our phase-gate simulations, which include $1/f$ charge noise from fluctuating traps, show that this symmetry is most effectively exploited if the gate operation switches rapidly between sweet spots deep in the (3,3) and (4,2) charge stability regions; fidelities very close to one are predicted if subnanosecond switching can be performed.

  11. Engineering a C-Phase quantum gate: optical design and experimental realization

    E-Print Network [OSTI]

    Andrea Chiuri; Chiara Greganti; Paolo Mataloni

    2012-04-12T23:59:59.000Z

    A two qubit quantum gate, namely the C-Phase, has been realized by exploiting the longitudinal momentum (i.e. the optical path) degree of freedom of a single photon. The experimental setup used to engineer this quantum gate represents an advanced version of the high stability closed-loop interferometric setup adopted to generate and characterize 2-photon 4-qubit Phased Dicke states. Some experimental results, dealing with the characterization of multipartite entanglement of the Phased Dicke states are also discussed in detail.

  12. Ordered involutive operator spaces

    E-Print Network [OSTI]

    Blecher, David P; Neal, Matthew; Werner, Wend

    2007-01-01T23:59:59.000Z

    This is a companion to recent papers of the authors; here we construct the `noncommutative Shilov boundary' of a (possibly nonunital) selfadjoint ordered space of Hilbert space operators. The morphisms in the universal property of the boundary preserve order. As an application, we consider `maximal' and `minimal' unitizations of such ordered operator spaces.

  13. SPACE RESOURCES ROUNDTABLE IX

    E-Print Network [OSTI]

    Rathbun, Julie A.

    SPACE RESOURCES ROUNDTABLE IX Colorado School of Mines October 25-27, 2007 http://www.ISRUinfo.com Sponsored by: Colorado School of Mines Lunar and Planetary Institute Space Resources Roundtable, Inc. First Space Michael B. Duke, Colorado School of Mines Leslie Gertsch, University of Missouri-Rolla Alex

  14. Conclusions Fractionated Space Systems

    E-Print Network [OSTI]

    de Weck, Olivier L.

    Conclusions Fractionated Space Systems There is a growing interest in fractionated space system design. Fractionated space systems are inherently flexible and modular. There are many key technologies of flexibility serves as a source of motivation for system designers to embed flexibility into a system design (i

  15. Dominant-Negative Synthesis Suppression of Voltage-Gated Calcium Channel Cav2.2 Induced by Truncated Constructs

    E-Print Network [OSTI]

    Dolphin, Annette C.

    Dominant-Negative Synthesis Suppression of Voltage-Gated Calcium Channel Cav2.2 Induced, United Kingdom Voltage-gated calcium channel 1 subunits consist of four domains (I­IV), each with six by the cytoplasmic I-II loop of Cav2.2. It requires transmembrane seg- ments, because the isolated Cav2.2 N terminus

  16. High-Performance Integrated Dual-Gate AlGaN/GaN Enhancement-Mode Transistor

    E-Print Network [OSTI]

    Lu, Bin

    In this letter, we present a new AlGaN/GaN enhancement-mode (E-mode) transistor based on a dual-gate structure. The dual gate allows the transistor to combine an E-mode behavior with low on-resistance and very high breakdown ...

  17. Trapping in deep defects under substrate hot electron stress in TiN/Hf-silicate based gate stacks

    E-Print Network [OSTI]

    Misra, Durgamadhab "Durga"

    Trapping in deep defects under substrate hot electron stress in TiN/Hf-silicate based gate stacks N. Zaslavsky Abstract Substrate hot electron stress was applied on n+ -ringed n-channel MOS capacitors with TiN/Hf-silicate. Introduction Hafnium silicate based high-j gate dielectrics have been put forth as the leading candidates

  18. ECG-GATED C-ARM COMPUTED TOMOGRAPHY USING L1 REGULARIZATION Cyril Mory 1,3

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ECG-GATED C-ARM COMPUTED TOMOGRAPHY USING L1 REGULARIZATION Cyril Mory 1,3 , Bo Zhang 3 , Vincent of the algorithm used for the minimization. Index Terms -- C-Arm, computed tomography, ECG- gating, augmented arises from the synchronization with the patient's electrocardiogram (ECG), which is necessary to avoid

  19. On Cartesian trees and range minimum queries

    E-Print Network [OSTI]

    Demaine, Erik D.

    We present new results on Cartesian trees with applications in range minimum queries and bottleneck edge queries. We introduce a cache-oblivious Cartesian tree for solving the range minimum query problem, a Cartesian tree ...

  20. Viking Range: Order (2014-CE-23014)

    Broader source: Energy.gov [DOE]

    DOE ordered Viking Range, LLC to pay a $8,000 civil penalty after finding Viking Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  1. American Range: Order (2014-CE-23006)

    Broader source: Energy.gov [DOE]

    DOE ordered American Range Corporation to pay a $8,000 civil penalty after finding American Range had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  2. An energy relaxation tolerant approach to quantum entanglement, information transfer, and gates with superconducting-quantum-interference-device qubits in cavity QED

    E-Print Network [OSTI]

    Yang, Chuiping; Chu, Shih-I; Han, Siyuan

    2004-03-31T23:59:59.000Z

    A scheme is proposed for realizing quantum entanglement, information transfer, CNOT gates, and SWAP gates with supercoiiducting-quantum-interference-device (SQUID) qubits in cavity QED. In the scheme, the two logical states ...

  3. Possible realization of entanglement, logical gates, and quantum-information transfer with superconducting-quantum-interference-device qubits in cavity QED

    E-Print Network [OSTI]

    Yang, Chui-Ping; Chu, Shih-I; Han, Siyuan

    2003-04-17T23:59:59.000Z

    We present a scheme to achieve maximally entangled states, controlled phase-shift gate, and SWAP gate for two superconducting-quantum-interference-device (SQUID) qubits, by placing SQUIDs in a microwave cavity. We also ...

  4. Range Fuels Commercial-Scale Biorefinery

    Broader source: Energy.gov [DOE]

    The Range Fuels commercial-scale biorefinery will use a variety of feedstocks to create cellulosic ethanol, methanol, and power.

  5. TANK SPACE OPTIONS REPORT

    SciTech Connect (OSTI)

    WILLIS WL; AHRENDT MR

    2009-08-11T23:59:59.000Z

    Since this report was originally issued in 2001, several options proposed for increasing double-shell tank (DST) storage space were implemented or are in the process of implementation. Changes to the single-shell tank (SST) waste retrieval schedule, completion of DST space saving options, and the DST space saving options in progress have delayed the projected shortfall of DST storage space from the 2007-2011 to the 2018-2025 timeframe (ORP-11242, River Protection Project System Plan). This report reevaluates options from Rev. 0 and includes evaluations of new options for alleviating projected restrictions on SST waste retrieval beginning in 2018 because of the lack of DST storage space.

  6. Kant's hidden ontology of space

    E-Print Network [OSTI]

    Messina, James Anthony

    2011-01-01T23:59:59.000Z

    Verlag, Cassam, Quassim. “Space and Objective Experience,”John. World Enough and Space-Time (Cambridge, Massachusetts:On the Perception of Space [and Time],” in The Cambridge

  7. Saturation and Dynamic Range of Microchannel Plate-Based X-Ray Imagers

    SciTech Connect (OSTI)

    ,

    2012-05-04T23:59:59.000Z

    This paper describes recent advances in Monte Carlo simulations of microchannel plate (MCP)–based x-ray detectors, a continuation of ongoing work in this area. A Monte Carlo simulation model has been developed over the past several years by National Security Technologies, LLC (NSTec). The model simulates the secondary electron emission process in an MCP pore and includes the effects of gain saturation. In this work we focus on MCP gain saturation and dynamic range. We have performed modeling and experimental characterizations of L/D = 46, 10-micron diameter, MCP-based detectors. The detectors are typically operated by applying a subnanosecond voltage pulse, which gates the detector on. Agreement between the simulations and experiment is very good for a variety of voltage pulse waveforms ranging in width from 150 to 300 ps. The results indicate that such an MCP begins to show nonlinear gain around 5 × 10^4 electrons per pore and hard saturation around 105 electrons per pore. The simulations show a difference in MCP sensitivity vs voltage for high flux of photons producing large numbers of photoelectrons on a subpicosecond timescale. Simulations and experiments both indicate an MCP dynamic range of 1 to 10,000, and the dynamic range depends on how the voltage is applied.

  8. Circadian gating of the psbAIII high light response in Synechococcus sp. strain PCC 7942

    E-Print Network [OSTI]

    Shelton, Jeffrey Lyn

    2000-01-01T23:59:59.000Z

    (1-5 fold) during the peaks of the cycle. We also found that in a clock null strain the lack of an oscillator does not entirely negate the light response of PpsbAIII::luxAB; however, this response does not demonstrate gating. In contrast...

  9. Elsevier Science 1 Use of the GATE Monte Carlo package for dosimetry

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Elsevier Science 1 Use of the GATE Monte Carlo package for dosimetry applications D. Visvikis, a* M Angeles, USA Abstract One of the roles for MC simulation studies is in the area of dosimetry. A number of different codes dedicated to dosimetry applications are available and widely used today, such as MCNP

  10. How to Successfully Implement a Knowledge Management System for the Mechanical Engineering Department at Gating Incorporated

    E-Print Network [OSTI]

    Mudd, John

    2009-05-15T23:59:59.000Z

    . With this explosive growth, it has become imperative that Gating Incorporated instill a Knowledge Management System to retain the vast amount of tacit knowledge. New products are critical for consumer product companies, so finding ways to capture the knowledge of a...

  11. Performance of a 512 x 512 Gated CMOS Imager with a 250 ps Exposure Time

    SciTech Connect (OSTI)

    Teruya, A T; Moody, J D; Hsing, W W; Brown, C G; Griffin, M; Mead, A S

    2012-10-01T23:59:59.000Z

    We describe the performance of a 512x512 gated CMOS read out integrated circuit (ROIC) with a 250 ps exposure time. A low-skew, H-tree trigger distribution system is used to locally generate individual pixel gates in each 8x8 neighborhood of the ROIC. The temporal width of the gate is voltage controlled and user selectable via a precision potentiometer. The gating implementation was first validated in optical tests of a 64x64 pixel prototype ROIC developed as a proof-of-concept during the early phases of the development program. The layout of the H-Tree addresses each quadrant of the ROIC independently and admits operation of the ROIC in two modes. If “common mode” triggering is used, the camera provides a single 512x512 image. If independent triggers are used, the camera can provide up to four 256x256 images with a frame separation set by the trigger intervals. The ROIC design includes small (sub-pixel) optical photodiode structures to allow test and characterization of the ROIC using optical sources prior to bump bonding. Reported test results were obtained using short pulse, second harmonic Ti:Sapphire laser systems operating at ?~ 400 nm at sub-ps pulse widths.

  12. Passivation effect on gate-bias stress instability of carbon nanotube thin film transistors

    SciTech Connect (OSTI)

    Won Lee, Sang [Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Suh, Dongseok, E-mail: energy.suh@skku.edu [Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Department of Energy Science and Department of Physics, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Young Lee, Si [Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Department of Physics, Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Hee Lee, Young, E-mail: leeyoung@skku.edu [Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Department of Energy Science and Department of Physics, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); Department of Physics, Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of)

    2014-04-21T23:59:59.000Z

    A prior requirement of any developed transistor for practical use is the stability test. Random network carbon nanotube-thin film transistor (CNT-TFT) was fabricated on SiO{sub 2}/Si. Gate bias stress stability was investigated with various passivation layers of HfO{sub 2} and Al{sub 2}O{sub 3}. Compared to the threshold voltage shift without passivation layer, the measured values in the presence of passivation layers were reduced independent of gate bias polarity except HfO{sub 2} under positive gate bias stress (PGBS). Al{sub 2}O{sub 3} capping layer was found to be the best passivation layer to prevent ambient gas adsorption, while gas adsorption on HfO{sub 2} layer was unavoidable, inducing surface charges to increase threshold voltage shift in particular for PGBS. This high performance in the gate bias stress test of CNT-TFT even superior to that of amorphous silicon opens potential applications to active TFT industry for soft electronics.

  13. Needle-based reflection refractometry of scattering samples using coherence-gated

    E-Print Network [OSTI]

    Boppart, Stephen

    effects of internal refractive index variation in near-infrared optical tomography: a finite element, and K. D. Paulsen, "Effects of refractive index on near- infrared tomography of the breast," Appl. OptNeedle-based reflection refractometry of scattering samples using coherence-gated detection Adam M

  14. Ligand Gated Ion Channel Functionality Assays Robert P. Hayes, Kumud Raj Poudel and James A. Brozik

    E-Print Network [OSTI]

    Collins, Gary S.

    was to devise a method suitable to test the functionality of the entire family of cysteine-loop ligand gated ion substrate was infused with calcium ions that were trapped by the POPC bilayer. Once the assembly was formed. Electrochemical measurements were taken using a calcium ion sensitive electrode. The assemblies were interrogated

  15. International Agriculture Fellowship: A Gates Foundation Grand Challenges Exploration in Endophytic Biological Control

    E-Print Network [OSTI]

    Ferrara, Katherine W.

    International Agriculture Fellowship: A Gates Foundation Grand Challenges Exploration in Endophytic Biological Control Who we are: The International Center for Tropical Agriculture (CIAT) is a member institute of the Consultative Group on International Agricultural Research (CIAR). Based in Cali, Colombia, we focus

  16. Accuracy of gates in a quantum computer based on vibrational eigenstates Dmitri Babikov

    E-Print Network [OSTI]

    Reid, Scott A.

    of quantum gates in such a system. Optimal control theory and numerical time-propagation of vibrational wave the computational sciences:2 ``Quantum computing would be to ordinary com- puting what nuclear energy is to fire'' consisting of two states 0 and 1 that have been harnessed for running quantum computing algorithms, setting

  17. Spin transistor operation driven by the Rashba spin-orbit coupling in the gated nanowire

    SciTech Connect (OSTI)

    Wójcik, P.; Adamowski, J., E-mail: adamowski@fis.agh.edu.pl; Spisak, B. J.; Wo?oszyn, M. [Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. Mickiewicza 30, Kraków (Poland)

    2014-03-14T23:59:59.000Z

    A theoretical description has been proposed for the operation of the spin transistor in the gate-controlled InAs nanowire. The calculated current-voltage characteristics show that the electron current flowing from the source (spin injector) to the drain (spin detector) oscillates as a function of the gate voltage, which results from the precession of the electron spin caused by the Rashba spin-orbit interaction in the vicinity of the gate. We have studied the operation of the spin transistor under the following conditions: (A) the full spin polarization of electrons in the contacts, zero temperature, and the single conduction channel corresponding to the lowest-energy subband of the transverse motion and (B) the partial spin polarization of the electrons in the contacts, the room temperature, and the conduction via many transverse subbands taken into account. For case (A), the spin-polarized current can be switched on/off by the suitable tuning of the gate voltage, for case (B) the current also exhibits the pronounced oscillations but with no-zero minimal values. The computational results obtained for case (B) have been compared with the recent experimental data and a good agreement has been found.

  18. Influence of Electrolyte Composition on Liquid-Gated Carbon Nanotube and Graphene Transistors

    E-Print Network [OSTI]

    Dekker, Cees

    Influence of Electrolyte Composition on Liquid-Gated Carbon Nanotube and Graphene Transistors Iddo-walled carbon nanotubes (SWNTs) and graphene can function as highly sensitive nanoscale (bio)sensors in solution. Here, we compare experimentally how SWNT and graphene transistors respond to changes in the composition

  19. 7-Gate Kinetic AMPA Model Kinetics to match EPSCs from calyx of Held

    E-Print Network [OSTI]

    Graham, Bruce

    7-Gate Kinetic AMPA Model · Kinetics to match EPSCs from calyx of Held · Multiple closed, open and EPSC amplitude Bruce Graham Department of Computing Science and Mathematics, University of Stirling, U, including the calyx of Held in the mammalian auditory system. Such depression may be mediated

  20. REAL-TIME DUAL-MICROPHONE SPEECH ENHANCEMENT USING FIELD PROGRAMMABLE GATE ARRAYS

    E-Print Network [OSTI]

    Sheikholeslami, Ali

    REAL-TIME DUAL-MICROPHONE SPEECH ENHANCEMENT USING FIELD PROGRAMMABLE GATE ARRAYS David Halupka@eecg}.toronto.edu ABSTRACT This paper discusses an implementation of a dual- microphone phase-based speech enhancement or irrelevant conversations, are present has fueled research interest in the areas of speech enhancement

  1. Hafnium-doped tantalum oxide high-k gate dielectric films for future CMOS technology

    E-Print Network [OSTI]

    Lu, Jiang

    2007-04-25T23:59:59.000Z

    of the doped films were explained by their compositions and bond structures. The Hf-doped TaOx film is a potential high-k gate dielectric for future MOS transistors. A 5 Ã?Â? tantalum nitride (TaNx) interface layer has been inserted between the Hf-doped Ta...

  2. Method and system for measuring gate valve clearances and seating force

    DOE Patents [OSTI]

    Casada, Donald A. (Knoxville, TN); Haynes, Howard D. (Knoxville, TN); Moyers, John C. (Oak Ridge, TN); Stewart, Brian K. (Burns, TN)

    1996-01-01T23:59:59.000Z

    Valve clearances and seating force, as well as other valve operational parameters, are determined by measuring valve stem rotation during opening and closing operations of a translatable gate valve. The magnitude of the stem rotation, and the relative difference between the stem rotation on opening and closing provides valuable data on the valve internals in a non-intrusive manner.

  3. Gate Voltage Control of Oxygen Diffusion on Graphene Dr. Jorge O. Sofo

    E-Print Network [OSTI]

    Bjørnstad, Ottar Nordal

    Gate Voltage Control of Oxygen Diffusion on Graphene Dr. Jorge O. Sofo Associate Professor conductivity (twice that of diamond). Due to Carbon's affinity for tetrahedral bonding, its surface is amenable atoms. Our research focuses on the attachment and diffusion of different atomic species to the surface

  4. Economic Congestion Relief Across Multiple Regions Requires Tradable Physical Flow-gate Rights

    E-Print Network [OSTI]

    California at Berkeley. University of

    PWP-076 Economic Congestion Relief Across Multiple Regions Requires Tradable Physical Flow.ucei.berkeley.edu/ucei #12;Economic Congestion Relief Across Multiple Regions Requires Tradable Physical Flow-gate Rights- mission use. The North American Electric Reliability Council NERC is in the process of implementing

  5. Effects of Magnesium on Inactivation of the Voltage-gated Calcium Current in

    E-Print Network [OSTI]

    Effects of Magnesium on Inactivation of the Voltage-gated Calcium Current in Cardiac Myocytes H-dependent inactivation can be modulated by changes in cytoplasmic Mg~+. INTRODUCTION Magnesium is an important constituent of the intracellular milieu. Despite the importance of magnesium as an essential cofactor

  6. Photothermal Response in Dual-Gated Bilayer Graphene M.-H. Kim,1

    E-Print Network [OSTI]

    Murphy, Thomas E.

    Photothermal Response in Dual-Gated Bilayer Graphene M.-H. Kim,1 J. Yan,1,2 R. J. Suess,3 T. E photoresponse in gapped bilayer graphene was investigated by optical and transport measurements. A pulse There is growing recognition that graphene has excep- tional potential as a new optoelectronic material, which has

  7. Current transport, gate dielectrics and band gap engineering in graphene devices

    E-Print Network [OSTI]

    Perebeinos, Vasili

    Current transport, gate dielectrics and band gap engineering in graphene devices Wenjuan Zhu In this work, we studied current transport in mono-, bi- and tri-layer graphene. We find that both of the electrical field of the substrate surface polar phonons in bi-layer/tri-layer graphenes. We also find

  8. Gate-modulated thermoelectric conversion in disordered nanowires: I. Low temperature coherent regime

    E-Print Network [OSTI]

    Recanati, Catherine

    Gate-modulated thermoelectric conversion in disordered nanowires: I. Low temperature coherent as promising thermoelectric devices1 . In comparison to their bulk counterparts, they provide opportunities of thermoelectric conversion at a given temperature T . Indeed, they allow to reduce the phonon contribution ph

  9. Title: Hydraulic modeling of a mixed water level control hydro-mechanical gate

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Title: Hydraulic modeling of a mixed water level control hydro-mechanical gate Ludovic Cassan1 Abstract: The article describes the hydraulic functioning of a mixed water level control hydro- mechanical of the model to reproduce the functioning of this complex hydro-mechanical system. CE database Subject headings

  10. Finding the Energy Efficient Curve: Gate Sizing for Minimum Power under Delay Constraints

    E-Print Network [OSTI]

    Kolodny, Avinoam

    Finding the Energy Efficient Curve: Gate Sizing for Minimum Power under Delay Constraints Yoni in a fast circuit by the same factor does not yield an energy-efficient design, and we characterize efficient. A design implementation is considered to be energy efficient when it has the highest performance

  11. Lanthanum silicate gate dielectric stacks with subnanometer equivalent oxide thickness utilizing an interfacial silica consumption reaction

    E-Print Network [OSTI]

    Garfunkel, Eric

    Lanthanum silicate gate dielectric stacks with subnanometer equivalent oxide thickness utilizing-8087 Received 13 April 2005; accepted 6 June 2005; published online 26 July 2005 A silicate reaction between process route to interface elimination, while producing a silicate dielectric with a higher temperature

  12. Sulfur surface chemistry on the platinum gate of a silicon carbide based hydrogen sensor

    E-Print Network [OSTI]

    Tobin, Roger G.

    monitoring, solid-oxide fuel cells, and coal gasification, require operation at much higher temperatures thanSulfur surface chemistry on the platinum gate of a silicon carbide based hydrogen sensor Yung Ho to hydrogen sulfide, even in the presence of hydrogen or oxygen at partial pressures of 20­600 times greater

  13. Tonopah Test Range capabilities: technical manual

    SciTech Connect (OSTI)

    Manhart, R.L.

    1982-11-01T23:59:59.000Z

    This manual describes Tonopah Test Range (TTR), defines its testing capabilities, and outlines the steps necessary to schedule tests on the Range. Operated by Sandia National Laboratories, TTR is a major test facility for DOE-funded weapon programs. The Range presents an integrated system for ballistic test vehicle tracking and data acquisition. Multiple radars, optical trackers, telemetry stations, a central computer complex, and combined landline/RF communications systems assure full Range coverage for any type of test. Range operations are conducted by a department within Sandia's Field Engineering Directorate. While the overall Range functions as a complete system, it is operationally divided into the Test Measurements, Instrumentation Development, and Range Operations divisions. The primary function of TTR is to support DOE weapons test activities. Management, however, encourages other Government agencies and their contractors to schedule tests on the Range which can make effective use of its capabilities. Information concerning Range use by organizations outside of DOE is presented. Range instrumentation and support facilities are described in detail. This equipment represents the current state-of-the-art and reflects a continuing commitment by TTR management to field the most effective tracking and data acquisition system available.

  14. Space Systems Finland 1 Deployment in the Space Sector

    E-Print Network [OSTI]

    Southampton, University of

    © Space Systems Finland 1 Deployment in the Space Sector #12;© Space Systems Finland 2 SW Constraints Design Requirements User Requirements SW Requirements #12;© Space Systems Finland 3 The space, but there is no viable alternative · Many requirements are not testable #12;© Space Systems Finland 4 SSF OBJECTIVES

  15. space for science, enterprise and environment Bringing Space Into School

    E-Print Network [OSTI]

    space for science, enterprise and environment Bringing Space Into School Science The National Space Education Initiative #12;space for science, enterprise and environment National Space Education Initiative the consultations · Recommendations of the report #12;space for science, enterprise and environment Background

  16. Magnetic bags in hyperbolic space

    E-Print Network [OSTI]

    Bolognesi, Stefano; Sutcliffe, Paul

    2015-01-01T23:59:59.000Z

    A magnetic bag is an abelian approximation to a large number of coincident SU(2) BPS monopoles. In this paper we consider magnetic bags in hyperbolic space and derive their Nahm transform from the large charge limit of the discrete Nahm equation for hyperbolic monopoles. An advantage of studying magnetic bags in hyperbolic space, rather than Euclidean space, is that a range of exact charge N hyperbolic monopoles can be constructed, for arbitrarily large values of N, and compared with the magnetic bag approximation. We show that a particular magnetic bag (the magnetic disc) provides a good description of the axially symmetric N-monopole. However, an abelian magnetic bag is not a good approximation to a roughly spherical N-monopole that has more than N zeros of the Higgs field. We introduce an extension of the magnetic bag that does provide a good approximation to such monopoles and involves a spherical non-abelian interior for the bag, in addition to the conventional abelian exterior.

  17. Quantum-Space Attacks

    E-Print Network [OSTI]

    Ran Gelles; Tal Mor

    2007-11-25T23:59:59.000Z

    Theoretical quantum key distribution (QKD) protocols commonly rely on the use of qubits (quantum bits). In reality, however, due to practical limitations, the legitimate users are forced to employ a larger quantum (Hilbert) space, say a quhexit (quantum six-dimensional) space, or even a much larger quantum Hilbert space. Various specific attacks exploit of these limitations. Although security can still be proved in some very special cases, a general framework that considers such realistic QKD protocols, as well as} attacks on such protocols, is still missing. We describe a general method of attacking realistic QKD protocols, which we call the `quantum-space attack'. The description is based on assessing the enlarged quantum space actually used by a protocol, the `quantum space of the protocol'. We demonstrate these new methods by classifying various (known) recent attacks against several QKD schemes, and by analyzing a novel attack on interferometry-based QKD.

  18. Gymnastics in Phase Space

    SciTech Connect (OSTI)

    Chao, Alexander Wu; /SLAC

    2012-03-01T23:59:59.000Z

    As accelerator technology advances, the requirements on accelerator beam quality become increasingly demanding. Facing these new demands, the topic of phase space gymnastics is becoming a new focus of accelerator physics R&D. In a phase space gymnastics, the beam's phase space distribution is manipulated and precision tailored to meet the required beam qualities. On the other hand, all realization of such gymnastics will have to obey accelerator physics principles as well as technological limitations. Recent examples of phase space gymnastics include Emittance exchanges, Phase space exchanges, Emittance partitioning, Seeded FELs and Microbunched beams. The emittance related topics of this list are reviewed in this report. The accelerator physics basis, the optics design principles that provide these phase space manipulations, and the possible applications of these gymnastics, are discussed. This fascinating new field promises to be a powerful tool of the future.

  19. A space crystal diffraction telescope for the energy range of nuclear transitions

    SciTech Connect (OSTI)

    von Ballmoos, P.; Naya, J.E.; Albernhe, F.; Vedrenne, G. [Centre d`Etude Spatial des Rayonmenments, Toulouse (France); Smither, R.K.; Faiz, M.; Fernandez, P.; Graber, T. [Argonne National Lab., IL (United States)

    1995-04-01T23:59:59.000Z

    This paper contains literature from American Power Conference Air Toxics Being Measured Accurately, Controlled Effectively NO{sub x} and SO{sub 2} Emissions Reduced; Surface Condensers Improve Heat Rate; Usable Fuel from Municipal Solid Waste; Cofiring Technology Reduces Gas Turbine Emissions; Trainable, Rugged Microsensor Identifies of Gases; High-Tc Superconductors Fabricated; High-Temperature Superconducting Current Leads; Vitrification of Low-Level Radioactive and Mixed Wastes; Characterization, Demolition, and Disposal of Contaminated Structures; On-Line Plant Diagnostics and Management; Sulfide Ceramic Materials for Improved Batteries; Flywheel Provides Efficient Energy Storage; Battery Systems for Electric Vehicles; Polymer-Electrolyte Fuel Cells for Transportation; Solid-Oxide Fuel Cells for Transportation; Surface Acoustic Wave Sensor Monitors Emissions in Real-Time; Advance Alternative-Fueled Automotive Technologies; Thermal & Mechanical Process; Flow-Induced Vibration & Flow Distribution in Shell-and-Tube Heat Exchangers; Ice Slurries for District Cooling; Advanced Fluids; Compact Evaporator and Condenser Technology; and Analysis of Failed Nuclear Power Station Components.

  20. Inexact range-space Krylov solvers for linear systems arising from inverse problems

    E-Print Network [OSTI]

    Toint, Philippe

    is crucial in data assimilation appli- cations and other inverse problems. Secondly, it is shown.1) and methods of the type we just men- tioned finds its origin in (but is not limited by) the data assimilation. Keywords: Krylov methods, linear systems, inexact matrix products, data assimila- tion. 1 Introduction

  1. Y-12 to help create fuel for NASA's long-range space exploration missions

    National Nuclear Security Administration (NNSA)

    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 Jun Jul(Summary) "ofEarlyEnergyDepartmentNational NuclearhasAdministration go onAdministrationNuclear SecurityNuclear|

  2. Range of joint motion in college males

    E-Print Network [OSTI]

    Houy, David Richard

    1982-01-01T23:59:59.000Z

    . These include the fact that there is little agreement as to the definition and limits of normal f1exibility. It was also found that the range of joint motion is highly specific and that measurement of one body joint cannot be used to predict the range... many of the problems outlined by Holland. There have been several techniques developed for measuring range of' joint motion. Adrian (1968), The American Academy of Orthopedic Surgeons (1968), Ayoub (1972), Clarke (1975), Dempster (1955), Garrett...

  3. Matter: Space without Time

    E-Print Network [OSTI]

    Yousef Ghazi-Tabatabai

    2012-11-19T23:59:59.000Z

    While Quantum Gravity remains elusive and Quantum Field Theory retains the interpretational difficulties of Quantum Mechanics, we have introduced an alternate approach to the unification of particles, fields, space and time, suggesting that the concept of matter as space without time provides a framework which unifies matter with spacetime and in which we anticipate the development of complete theories (ideally a single unified theory) describing observed 'particles, charges, fields and forces' solely with the geometry of our matter-space-time universe.

  4. Range Design Criteria- June 4, 2012

    Broader source: Energy.gov [DOE]

    This document contains the currently-approved firearms "Range Design Criteria" referred to on DOE O 473.3, Protection Program Operations

  5. Total Space Heat-

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    Commercial Buildings Energy Consumption Survey: Energy End-Use Consumption Tables Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration...

  6. Total Space Heat-

    Gasoline and Diesel Fuel Update (EIA)

    Revised: December, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings...

  7. AB Space Engine

    E-Print Network [OSTI]

    Alexander Bolonkin

    2008-03-02T23:59:59.000Z

    On 4 January 2007 the author published the article Wireless Transfer of Electricity in Outer Space in http://arxiv.org wherein he offered and researched a new revolutionary method of transferring electric energy in space. In that same article, he offered a new engine which produces a large thrust without throwing away large amounts of reaction mass (unlike the conventional rocket engine). In the current article, the author develops the theory of this kind of impulse engine and computes a sample project which shows the big possibilities opened by this new AB-Space Engine. The AB-Space Engine gets the energy from ground-mounted power; a planet electric station can transfer electricity up to 1000 millions (and more) of kilometers by plasma wires. Author shows that AB-Space Engine can produce thrust of 10 tons (and more). That can accelerate a space ship to some thousands of kilometers/second. AB-Space Engine has a staggering specific impulse owing to the very small mass expended. The AB-Space Engine reacts not by expulsion of its own mass (unlike rocket engine) but against the mass of its planet of origin (located perhaps a thousand of millions of kilometers away) through the magnetic field of its plasma cable. For creating this plasma cable the AB-Space Engine spends only some kg of hydrogen.

  8. Beyond Space-Time

    E-Print Network [OSTI]

    A. M. Polyakov

    2006-02-01T23:59:59.000Z

    These notes, based on the remarks made at the 23 Solvay Conference, collect several speculative ideas concerning gauge/ strings duality, de Sitter spaces, dimensionality and the cosmological constant.

  9. Sounds and Space 

    E-Print Network [OSTI]

    Nudds, Matthew

    the account I give (in section 1) of what sounds are and (in section 2) of the role of space in auditory perception....

  10. Neutron Tomography and Space

    E-Print Network [OSTI]

    Egbert, Hal; Walker, Ronald; Flocchini, R.

    2007-01-01T23:59:59.000Z

    Kevin Shields, “Optimization of neutron tomography for rapidNEUTRON TOMOGRAPHY AND SPACE Hal Egbert, Ronald Walker, R.industrial applications[1]. Neutron Computed Tomography was

  11. Space: the final frontier

    E-Print Network [OSTI]

    Stoll, Peter

    2014-01-01T23:59:59.000Z

    Edited by Markus Eichhorn frontiers of biogeography 6.2,6596 Space: the final frontier Spatial Simulation: Exploringpoints in some places, but frontiers of biogeography 6.2,

  12. Passive solar space heating

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1980-01-01T23:59:59.000Z

    An overview of passive solar space heating is presented indicating trends in design, new developments, performance measures, analytical design aids, and monitored building results.

  13. National Aeronautics and Space Administration International Space

    E-Print Network [OSTI]

    Waliser, Duane E.

    sustainability and ensure their early incorporation in the architecture ­ Apply a phased approach to exploration Partnerships Strategy · NASA leadership of a sustainable and affordable human space exploration of many costs (not LCC) or obtain funding or resource offsets 2. Enhance sustainability thru interdependent

  14. Photometric Calibration of High Dynamic Range Cameras

    E-Print Network [OSTI]

    Durand, Frédo

    calibration of cameras with a dynamic range of more than six orders of magnitude such as complex camera re with a total dynamic range of 8 orders of luminance magnitude. Three acquisitions: without filter, using to the measurements of 6 gray patches of GretagMacbeth ColorChecker chart under 6 different illumination conditions. 0

  15. The Joint Essential Numerical Range of operators

    E-Print Network [OSTI]

    Li, Chi-Kwong

    The Joint Essential Numerical Range of operators: Convexity and Related Results Chi-Kwong Li Classification 47A12, 47A13, 47A55. Keywords Joint essential numerical range, self-adjoint operator, Hilbert the joint behavior of several operators A1, . . . , Am. One may see [1, 5, 12, 14, 15, 16, 19, 23, 28, 31

  16. Robust quantum gates and a bus architecture for quantum computing with rare-earth-ion doped crystals

    E-Print Network [OSTI]

    Janus Wesenberg; Klaus Moelmer

    2003-01-09T23:59:59.000Z

    We present a composite pulse controlled phase gate which together with a bus architecture improves the feasibility of a recent quantum computing proposal based on rare-earth-ion doped crystals. Our proposed gate operation is tolerant to variations between ions of coupling strengths, pulse lengths, and frequency shifts, and it achieves worst case fidelities above 0.999 with relative variations in coupling strength as high as 10% and frequency shifts up to several percent of the resonant Rabi frequency of the laser used to implement the gate. We outline an experiment to demonstrate the creation and detection of maximally entangled states in the system.

  17. National Aeronautical and Space Administration (NASA) Johnson...

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

    Aeronautical and Space Administration (NASA) Johnson Space Flight Center National Aeronautical and Space Administration (NASA) Johnson Space Flight Center Space Shuttle Endeavour,...

  18. Ecological traits influencing range expansion across large oceanic dispersal

    E-Print Network [OSTI]

    Bermingham, Eldredge

    Section of Ichthyology, California Acadamy of Sciences, 55 Music Concourse Drive, Golden Gate Park, San. Successful establishment after crossing both barriers may be facilitated by broad environmental tolerance of the tropical Atlantic Ocean: the Central American Land Bridge, the Mid-Atlantic Barrier (MAB; the stretch

  19. Scale and ecological and historical determinants of a species' geographic range: The plant parasite Phoradendron californicum Nutt. (Viscaceae)

    E-Print Network [OSTI]

    Lira Noriega, Andres

    2014-05-31T23:59:59.000Z

    Geographic ranges of species are fundamental units of study in ecology and evolutionary biology, since they summarize views of how species' populations and individuals are organized in space and time. Here, I assess how ...

  20. 8/1/14 Google Maps https://www.google.com/maps/dir/Golden+Gate+Bridge,+San+Francisco,+CA+94129/UCSF%2FMission+Bay,+San+Francisco,+CA/@37.7996107,-122.4363906,... 1/2

    E-Print Network [OSTI]

    Derisi, Joseph

    8/1/14 Google Maps https://www.google.com/maps/dir/Golden+Gate+Bridge,+San+Francisco,+CA+94129/UCSF has tolls. Directions from Golden Gate Bridge to UCSF/Mission Bay San Francisco, CA 94129 Golden Gate;8/1/14 Google Maps https://www.google.com/maps/dir/Golden+Gate+Bridge,+San+Francisco,+CA+94129/UCSF%2FMission

  1. Techniques for optically compressing light intensity ranges

    DOE Patents [OSTI]

    Rushford, M.C.

    1989-03-28T23:59:59.000Z

    A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter. 18 figs.

  2. Free space laser communication experiments from Earth to the Lunar Reconnaissance Orbiter in lunar orbit

    E-Print Network [OSTI]

    Sun, Xiaoli

    Laser communication and ranging experiments were successfully conducted from the satellite laser ranging (SLR) station at NASA Goddard Space Flight Center (GSFC) to the Lunar Reconnaissance Orbiter (LRO) in lunar orbit. ...

  3. Overview of Space Business Space & Integrated Defense Systems

    E-Print Network [OSTI]

    Overview of Space Business Space & Integrated Defense Systems Mitsubishi Corporation August 26 in Rio de Janeiro and Belo Horizonte #12;MC's Space Business Involved with aerospace business more than 40 years, covering civil/commercial space business, defense related space business and defense

  4. Spinorial space-time and privileged space direction (I)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Spinorial space-time and privileged space direction (I) Luis Gonzalez-Mestres Abstract Contrary of a privileged space direction are not strange phenomena from the point of view of fundamental space-time geometry. As already emphasized in our previous papers on the subject, the spinorial space-time we

  5. Space Robotic Capabilities David Kortenkamp (NASA Johnson Space Center)

    E-Print Network [OSTI]

    Kortenkamp, David

    Johnson Space Center Space Robotic Capabilities David Kortenkamp (NASA Johnson Space Center) Liam) David Wettergreen (Carnegie Mellon University) Dan Clancy (NASA Ames) #12;Johnson Space Center 12/18/2001 Space Robotics State-of-Art 2 ! Motivation Science Objectives Mission Concepts Robots Human

  6. "Space Station" Theme: Learning to Work, and Live, in Space

    E-Print Network [OSTI]

    Mathis, Wayne N.

    "Space Station" IMAX Film Theme: Learning to Work, and Live, in Space The educational value of NASM visit and afterward. See the "Alignment with Standards" table for details regarding how "Space Station in the "Space Station" program: · How astronauts train · What it is like to live and work in Space aboard

  7. 3742SPACE ISSUES AND RESOLUTION PROCEDURE Space issue or

    E-Print Network [OSTI]

    Page 1 3742SPACE ISSUES AND RESOLUTION PROCEDURE Space issue or conflict identified Do any of the strategies mitigate issue/conflict Complete Conflict Resolution Form Submit form to Space Management Office Space Management Office conduct issue/conflict analysis Space Management Office document possible

  8. The susceptibility of silicon-ion implanted gate insulators to x-ray radiation-induced defect generation

    SciTech Connect (OSTI)

    Reisman, A.; Sune, C.T.; Williams, C.K. (MCNC, Research Triangle Park, NC (US))

    1991-03-01T23:59:59.000Z

    This paper examines the x-ray susceptibility of silicon-ion implanted gate insulators of insulated gate-field effect transistors (IGFETs). It is found that silicon-ion implanted gate insulators appear to be much more susceptible to x-ray radiation induced defect generation than unimplanted devices. The residual defect density in silicon-implanted devices, following x-ray radiation, and subsequent postmetal annealing for up to 60 min is found to be greater than that in unimplanted devices. The results with silicon ions indicate that if the insulator is damaged by such a species during processing, as might occur due to knock-on from the gate electrode during source/drain formation, unannealable defects will form which would also tend to make the device structure more susceptible to radiation damage in a hostile environment, or to large hot- electron drift in conventional use.

  9. Vehicle Technologies Office Merit Review 2014: GATE Center for Electric Drive Transportation at the University of Michigan- Dearborn

    Broader source: Energy.gov [DOE]

    Presentation given by Regents University of Michigan at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about GATE Center...

  10. Regulation of N-type Voltage-Gated Calcium Channels and Presynaptic Function by Cyclin-Dependent Kinase 5

    E-Print Network [OSTI]

    Su, Susan C.

    N-type voltage-gated calcium channels localize to presynaptic nerve terminals and mediate key events including synaptogenesis and neurotransmission. While several kinases have been implicated in the modulation of calcium ...

  11. Abstract----Recently, a novel multi-bit nonvolatile memory based on double gate (DG) MOSFET is

    E-Print Network [OSTI]

    Lee, Jong Duk

    and the negative control gate voltages applied for read operation. We used Silvaco Atlas, a 2- D numerical. The quantitative analysis were conducted by Silvaco Atlas, a 2-D numerical device simulator [4]. We read

  12. E-Print Network 3.0 - atp-gated p2x4 ion Sample Search Results

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

    ion Search Powered by Explorit Topic List Advanced Search Sample search results for: atp-gated p2x4 ion Page: << < 1 2 3 4 5 > >> 1 introduction browse basic search advanced...

  13. Optimization of Enzymatic Biochemical Logic for Noise Reduction and Scalability: How Many Biocomputing Gates Can Be Interconnected in a Circuit?

    E-Print Network [OSTI]

    V. Privman; G. Strack; D. Solenov; M. Pita; E. Katz

    2008-09-13T23:59:59.000Z

    We report an experimental evaluation of the "input-output surface" for a biochemical AND gate. The obtained data are modeled within the rate-equation approach, with the aim to map out the gate function and cast it in the language of logic variables appropriate for analysis of Boolean logic for scalability. In order to minimize "analog" noise, we consider a theoretical approach for determining an optimal set for the process parameters to minimize "analog" noise amplification for gate concatenation. We establish that under optimized conditions, presently studied biochemical gates can be concatenated for up to order 10 processing steps. Beyond that, new paradigms for avoiding noise build-up will have to be developed. We offer a general discussion of the ideas and possible future challenges for both experimental and theoretical research for advancing scalable biochemical computing.

  14. Hybrid Photonic Hyper-Controlled-Not Gate with the Dipole Induced Transparency in Weak-Coupling Regime

    E-Print Network [OSTI]

    Bao-Cang Ren; Fu-Guo Deng

    2014-11-02T23:59:59.000Z

    We present a hybrid hyper-controlled-not (hyper-CNOT) gate for hyperparallel photonic quantum computing based on both the polarization and spatial-mode degrees of freedom (DOFs) of a two-photon system, which is identical to two CNOT gates operating at the same time on four photons in one DOF. This proposal is implemented with the optical reflection-transmission property of a diamond nitrogen-vacancy center embedded in a photonic crystal cavity coupled to two waveguides, which is suitable for the robust and flexible quantum information processing based on both the spatial-mode and polarization DOFs of photon systems in Purcell regime. With the hybrid hyper-CNOT gate, more quantum logic gate operations can be accomplished with less resources in a definite period of time, and the influence from photonic dissipation and environment noise can be suppressed.

  15. Long Range Campus Development Plan Existing Conditions

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    design solutions and in serving members of the larger community. The Long Range Campus Development Plan environments and year-round recreation opportunities. During the summer season, daylight lasts into the evening

  16. Long range transport of acid rain precursors

    E-Print Network [OSTI]

    Fay, James A.

    1983-01-01T23:59:59.000Z

    A model of the long range transport of primary and secondary pollutants derived by Fay and Rosenzweig (1) is applied to the problem of the transport of acid rain precursors. The model describes the long term average (annual ...

  17. Long range interactions in nanoscale science

    E-Print Network [OSTI]

    Rajter, Richard F.

    Our understanding of the “long range” electrodynamic, electrostatic, and polar interactions that dominate the organization of small objects at separations beyond an interatomic bond length is reviewed. From this basic-forces ...

  18. Practical fast gate rate InGaAs/InP single-photon avalanche photodiodes

    E-Print Network [OSTI]

    Jun Zhang; Rob Thew; Claudio Barreiro; Hugo Zbinden

    2009-08-16T23:59:59.000Z

    We present a practical and easy-to-implement method for high-speed near infrared single-photon detection based on InGaAs/InP single-photon avalanche photodiodes (SPADs), combining aspects of both sine gating and self-differencing techniques. At a gating frequency of 921 MHz and temperature of -30 $^{\\circ}$C we achieve: a detection efficiency of 9.3 %, a dark count probability of 2.8$\\times10^{-6}$ ns$^{-1}$, while the afterpulse probability is 1.6$\\times10^{-4}$ ns$^{-1}$, with a 10 ns "count-off time" setting. In principle, the maximum count rate of the SPAD can approach 100 MHz, which can significantly improve the performance for diverse applications.

  19. A communication-efficient nonlocal measurement with application to communication complexity and bipartite gate capacities

    E-Print Network [OSTI]

    Aram W. Harrow; Debbie W. Leung

    2011-03-04T23:59:59.000Z

    Two dual questions in quantum information theory are to determine the communication cost of simulating a bipartite unitary gate, and to determine their communication capacities. We present a bipartite unitary gate with two surprising properties: 1) simulating it with the assistance of unlimited EPR pairs requires far more communication than with a better choice of entangled state, and 2) its communication capacity is far lower than its capacity to create entanglement. This suggests that 1) unlimited EPR pairs are not the most general model of entanglement assistance for two-party communication tasks, and 2) the entangling and communicating abilities of a unitary interaction can vary nearly independently. The technical contribution behind these results is a communication-efficient protocol for measuring whether an unknown shared state lies in a specified rank-one subspace or its orthogonal complement.

  20. Risk analysis study of non-routine turbine/generator shutdown events and intake gate evaluation

    SciTech Connect (OSTI)

    Bardy, D.M. [Hydroelectric Design Center, Portland, OR (United States)

    1995-12-31T23:59:59.000Z

    The Corps of Engineers has undertaken a study to perform a reliability and risk analysis for evaluating non-routine turbine/generator shutdown scenarios. The study will evaluate the risks associated with events that would require a powerhouse to shut down a turbine/generator by using intake gates. The goal of this project is to estimate any potential damage that could occur for various intake gate configurations and closure times. The data obtained can also be used to evaluate any of the systems that affect reliability of the turbine/generator using established methods of risk analysis. This paper will briefly outline the study objectives and describe the progress of the study to this point.

  1. 2012 ARPA-E Energy Innovation Summit: Fireside Chat with Steven Chu and Bill Gates

    ScienceCinema (OSTI)

    Chu, Steven (U.S. Department of Energy Secretary); Gates, Bill (Microsoft, Chairman); Podesta, John (Center for American Progress, Chair and Counselor)

    2012-03-21T23:59:59.000Z

    The third annual ARPA-E Energy Innovation Summit was held in Washington D.C. in February, 2012. The event brought together key players from across the energy ecosystem - researchers, entrepreneurs, investors, corporate executives, and government officials - to share ideas for developing and deploying the next generation of energy technologies. This video captures a session called 'Fireside Chat' that featured Steven Chu, the Secretary of Energy, and Bill Gates, Chairman of Microsoft Corporation. The session is moderated by John Podesta, Chair of the Center for American Progress. Energy Secretary Steven Chu and Microsoft Founder and Chairman Bill Gates exchanged ideas about how small businesses and innovators can overcome the challenges that face many startups.

  2. Attosecond x-ray source generation from two-color polarized gating plasmonic field enhancement

    SciTech Connect (OSTI)

    Feng, Liqiang [College of Science, Liaoning University of Technology, Jinzhou 121000 (China) [College of Science, Liaoning University of Technology, Jinzhou 121000 (China); State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China); Yuan, Minghu [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China)] [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China); Chu, Tianshu [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China) [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China); Institute for Computational Sciences and Engineering, Laboratory of New Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071 (China)

    2013-12-15T23:59:59.000Z

    The plasmonic field enhancement from the vicinity of metallic nanostructures as well as the polarization gating technique has been utilized to the generation of the high order harmonic and the single attosecond x-ray source. Through numerical solution of the time-dependent Schrödinger equation, for moderate the inhomogeneity and the polarized angle of the two fields, we find that not only the harmonic plateau has been extended and enhanced but also the single short quantum path has been selected to contribute to the harmonic. As a result, a series of 50 as pulses around the extreme ultraviolet and the x-ray regions have been obtained. Furthermore, by investigating the other parameters effects on the harmonic emission, we find that this two-color polarized gating plasmonic field enhancement scheme can also be achieved by the multi-cycle pulses, which is much better for experimental realization.

  3. Programmable near-infrared ranging system

    DOE Patents [OSTI]

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

    1989-01-01T23:59:59.000Z

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

  4. SPACE TECHNOLOGY Actual Estimate

    E-Print Network [OSTI]

    SPACE TECHNOLOGY TECH-1 Actual Estimate Budget Authority (in $ millions) FY 2011 FY 2012 FY 2013 FY.6 29.5 29.5 29.5 29.5 29.5 29.5 Crosscutting Space Tech Development 120.4 187.7 293.8 272.1 266.6 259.7 247.0 Exploration Technology Development 144.6 189.9 202.0 215.5 215.7 214.5 216.5 Notional SPACE

  5. Probing spin entanglement by gate-voltage-controlled interference of current correlation in quantum spin Hall insulators

    E-Print Network [OSTI]

    Wei Chen; Z. D. Wang; R. Shen; D. Y. Xing

    2014-05-21T23:59:59.000Z

    We propose an entanglement detector composed of two quantum spin Hall insulators and a side gate deposited on one of the edge channels. For an ac gate voltage, the differential noise contributed from the entangled electron pairs exhibits the nontrivial step structures, from which the spin entanglement concurrence can be easily obtained. The possible spin dephasing effects in the quantum spin Hall insulators are also included.

  6. Tri-Gate Bulk CMOS Technology for Improved SRAM Scalability Changhwan Shin, Borivoje Nikoli, Tsu-Jae King Liu

    E-Print Network [OSTI]

    Nikolic, Borivoje

    ] is an example of such a design; it utilizes a gate electrode that is physically wrapped around the top portion along a poly-Si gate electrode in an SRAM array, for 15nm nominal STI recess depth. The sequence), pull- 570nm 263nm 570nm 263nm PG1 PD1 PU1 PU2 PD2 PG2 (a) 570nm 263nm 570nm 263nm PG1 PD1 PU1 PU2 PD2

  7. A comparison of the full custom, standard cell and gate array design methodologies

    E-Print Network [OSTI]

    Kwan, King-Wai

    1990-01-01T23:59:59.000Z

    A COMPARISON OF THE FULL CUSTOM, STANDARD CELL AND GATE ARRAY DESIGN METHODOLOGIES A Thesis by KING-WAI I&WAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulffllment of the requirements for the degree... approaches, the designers can select appropriate cells in the libraries which meet their specific requirements such as driving capability and power consumption. But standard cell designs can be used to implement specialized macros such as multi-port...

  8. Highly enhanced avalanche probability using sinusoidally-gated silicon avalanche photodiode

    SciTech Connect (OSTI)

    Suzuki, Shingo; Namekata, Naoto, E-mail: nnao@phys.cst.nihon-u.ac.jp; Inoue, Shuichiro [Institute of Quantum Science, Nihon University, 1-8-14 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8308 (Japan); Tsujino, Kenji [Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666 (Japan)

    2014-01-27T23:59:59.000Z

    We report on visible light single photon detection using a sinusoidally-gated silicon avalanche photodiode. Detection efficiency of 70.6% was achieved at a wavelength of 520?nm when an electrically cooled silicon avalanche photodiode with a quantum efficiency of 72.4% was used, which implies that a photo-excited single charge carrier in a silicon avalanche photodiode can trigger a detectable avalanche (charge) signal with a probability of 97.6%.

  9. Modeling the current behavior of the digital BiCMOS gate

    E-Print Network [OSTI]

    Tang, Zhilong

    1995-01-01T23:59:59.000Z

    CMOS gate showing the pull-up and pull-down sections 6 Schematics of the pull-up section Pull-up equivalent circuit model . Equivalent circuit model 10 Simplified equivalent circuit model Equivalent circuit model neglecting ATF Collector current... with ATF effect vs without ATF effect 14 Modified circuit model 16 10 Comparison of this work versus SPICE simulation Typical collector current response 17 12 13 Equivalent circuit for 0 ? t0 Equivalent circuit after t0 21 14 Base current...

  10. Case Studies on Variation Tolerant and Low Power Design Using Planar Asymmetric Double Gate Transistor

    E-Print Network [OSTI]

    Singh, Amrinder

    2011-10-21T23:59:59.000Z

    new circuit topology for IGFET, which on average shows 33.8% lower leakage and 34.9% lower area at the cost of 2.8% increase in total active mode power, for basic logic gates. Finally, we showed a technique for reducing leakage of minimum sized... ????????????????????????????????????????????????? 5 III.1 Power-delay product for FO4 inverter ????????????????????????????????????? 12 III.2 Power-delay product for 51 Stage ring oscillator ??????????????????????????? 12 IV.1 Delay distribution histogram...

  11. Touch sensors based on planar liquid crystal-gated-organic field-effect transistors

    SciTech Connect (OSTI)

    Seo, Jooyeok; Lee, Chulyeon; Han, Hyemi; Lee, Sooyong; Nam, Sungho; Kim, Youngkyoo, E-mail: ykimm@knu.ac.kr [Organic Nanoelectronics Laboratory, Department of Chemical Engineering and Graduate School of Applied Chemical Engineering, Kyungpook National University, Daegu, 702-701 (Korea, Republic of); Kim, Hwajeong [Organic Nanoelectronics Laboratory, Department of Chemical Engineering and Graduate School of Applied Chemical Engineering, Kyungpook National University, Daegu, 702-701 (Korea, Republic of); Priority Research Center, Research Institute of Advanced Energy Technology, Kyungpook National University, Daegu, 702-701 (Korea, Republic of); Lee, Joon-Hyung [School of Materials Science and Engineering, Kyungpook National University, Daegu, 702-701 (Korea, Republic of); Park, Soo-Young; Kang, Inn-Kyu [Department of Polymer Science and Engineering and Graduate School of Applied Chemical Engineering, Kyungpook National University, Daegu, 702-701 (Korea, Republic of)

    2014-09-15T23:59:59.000Z

    We report a tactile touch sensor based on a planar liquid crystal-gated-organic field-effect transistor (LC-g-OFET) structure. The LC-g-OFET touch sensors were fabricated by forming the 10 ?m thick LC layer (4-cyano-4{sup ?}-pentylbiphenyl - 5CB) on top of the 50 nm thick channel layer (poly(3-hexylthiophene) - P3HT) that is coated on the in-plane aligned drain/source/gate electrodes (indium-tin oxide - ITO). As an external physical stimulation to examine the tactile touch performance, a weak nitrogen flow (83.3 ?l/s) was employed to stimulate the LC layer of the touch device. The LC-g-OFET device exhibited p-type transistor characteristics with a hole mobility of 1.5 cm{sup 2}/Vs, but no sensing current by the nitrogen flow touch was measured at sufficiently high drain (V{sub D}) and gate (V{sub G}) voltages. However, a clear sensing current signal was detected at lower voltages, which was quite sensitive to the combination of V{sub D} and V{sub G}. The best voltage combination was V{sub D} = ?0.2 V and V{sub G} = ?1 V for the highest ratio of signal currents to base currents (i.e., signal-to-noise ratio). The change in the LC alignment upon the nitrogen flow touch was assigned as the mechanism for the present LC-g-OFET touch sensors.

  12. Optimum performance investigation of LYSO crystal pixels: A comparison between GATE simulation and experimental data

    E-Print Network [OSTI]

    Chen, Ze; Chen, Jin-Da; Zhang, Xiu-Ling; Sun, Zhi-Yu; Huang, Wen-Xue; Wang, Jian-Song; Guo, Zhong-Yan; Xiao, Guo-Qing

    2013-01-01T23:59:59.000Z

    Monte Carlo simulation plays an important role in the study of time of flight (TOF) positron emission tomography (PET) prototype. As it can incorporate accurate physical modeling of scintillation detection process, from scintillation light generation, the transport of scintillation photos through the crystal(s), to the conversion of these photons into electronic signals. The Geant4 based simulation software GATE can provide a user-friendly simulation platform containing the properties needed. In this work, we developed a dedicated module in GATE simulation tool. Using this module, we simulated the light yield, energy resolution, time resolution of LYSO pixels with the same cross-section ($4\\times4 mm^{2}$) of different lengths: 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, coupled to a PMT. The experiments were performed to validate the GATE simulation results. The results indicate that the best time resolution (484.0$\\pm$67.5 ps) and energy resolution (13.3$\\pm$0.4 %) could be produced by using pixel with length of 5 mm...

  13. Optimum performance investigation of LYSO crystal pixels: A comparison between GATE simulation and experimental data

    E-Print Network [OSTI]

    Ze Chen; Zheng-Guo Hu; Jin-Da Chen; Xiu-Ling Zhang; Zhi-Yu Sun; Wen-Xue Huang; Jian-Song Wang; Zhong-Yan Guo; Guo-Qing Xiao

    2013-09-15T23:59:59.000Z

    Monte Carlo simulation plays an important role in the study of time of flight (TOF) positron emission tomography (PET) prototype. As it can incorporate accurate physical modeling of scintillation detection process, from scintillation light generation, the transport of scintillation photos through the crystal(s), to the conversion of these photons into electronic signals. The Geant4 based simulation software GATE can provide a user-friendly simulation platform containing the properties needed. In this work, we developed a dedicated module in GATE simulation tool. Using this module, we simulated the light yield, energy resolution, time resolution of LYSO pixels with the same cross-section ($4\\times4 mm^{2}$) of different lengths: 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, coupled to a PMT. The experiments were performed to validate the GATE simulation results. The results indicate that the best time resolution (484.0$\\pm$67.5 ps) and energy resolution (13.3$\\pm$0.4 %) could be produced by using pixel with length of 5 mm. The module can also be applied to other cases for precisely simulating optical photons propagating in scintillators.

  14. Poly(methyl methacrylate) as a self-assembled gate dielectric for graphene field-effect transistors

    SciTech Connect (OSTI)

    Sanne, A.; Movva, H. C. P.; Kang, S.; McClellan, C.; Corbet, C. M.; Banerjee, S. K. [Microelectronics Research Center, University of Texas, Austin, Texas 78758 (United States)

    2014-02-24T23:59:59.000Z

    We investigate poly(methyl methacrylate) (PMMA) as a low thermal budget organic gate dielectric for graphene field effect-transistors (GFETs) based on a simple process flow. We show that high temperature baking steps above the glass transition temperature (?130?°C) can leave a self-assembled, thin PMMA film on graphene, where we get a gate dielectric almost for “free” without additional atomic layer deposition type steps. Electrical characterization of GFETs with PMMA as a gate dielectric yields a dielectric constant of k?=?3.0. GFETs with thinner PMMA dielectrics have a lower dielectric constant due to decreased polarization arising from neutralization of dipoles and charged carriers as baking temperatures increase. The leakage through PMMA gate dielectric increases with decreasing dielectric thickness and increasing electric field. Unlike conventional high-k gate dielectrics, such low-k organic gate dielectrics are potentially attractive for devices such as the proposed Bilayer pseudoSpin Field-Effect Transistor or flexible high speed graphene electronics.

  15. Ultra-wideband radios for time-of-flight-ranging and network position estimation

    DOE Patents [OSTI]

    Hertzog, Claudia A. (Houston, TX); Dowla, Farid U. (Castro Valley, CA); Dallum, Gregory E. (Livermore, CA); Romero, Carlos E. (Livermore, CA)

    2011-06-14T23:59:59.000Z

    This invention provides a novel high-accuracy indoor ranging device that uses ultra-wideband (UWB) RF pulsing with low-power and low-cost electronics. A unique of the present invention is that it exploits multiple measurements in time and space for very accurate ranging. The wideband radio signals utilized herein are particularly suited to ranging in harsh RF environments because they allow signal reconstruction in spite of multipath propagation distortion. Furthermore, the ranging and positioning techniques discussed herein directly address many of the known technical challenges encountered in UWB localization regarding synchronization and sampling. In the method developed, noisy, corrupted signals can be recovered by repeating range measurements across a channel, and the distance measurements are combined from many locations surrounding the target in a way that minimizes the range biases associated to indirect flight paths and through-wall propagation delays.

  16. Design and optimisation of quantum logic circuits for a three-qubit Deutsch-Jozsa algorithm implemented with optically-controlled, solid-state quantum logic gates

    E-Print Network [OSTI]

    A. Del Duce; S. Savory; P. Bayvel

    2009-10-09T23:59:59.000Z

    We analyse the design and optimisation of quantum logic circuits suitable for the experimental demonstration of a three-qubit quantum computation prototype based on optically-controlled, solid-state quantum logic gates. In these gates, the interaction between two qubits carried by the electron-spin of donors is mediated by the optical excitation of a control particle placed in their proximity. First, we use a geometrical approach for analysing the entangling characteristics of these quantum gates. Then, using a genetic programming algorithm, we develop circuits for the refined Deutsch-Jozsa algorithm investigating different strategies for obtaining short total computational times. We test two separate approaches based on using different sets of entangling gates with the shortest possible gate computation time which, however, does not introduce leakage of quantum information to the control particles. The first set exploits fast approximations of controlled-phase gates as entangling gates, while the other one arbitrary entangling gates with a shorter gate computation time compared to the first set. We have identified circuits with consistently shorter total computation times when using controlled-phase gates.

  17. Competing for Shelf Space.

    E-Print Network [OSTI]

    Martínez-de-Albéniz, V.; Roels, G.

    2007-01-01T23:59:59.000Z

    the changes in supplier i’s wholesale price and pro?t, i =space despite their lower wholesale prices. Using a di?erentImpact of Manufacturers’ Wholesale Prices a on a Retailer’s

  18. Envisioning creative space

    E-Print Network [OSTI]

    Özkâr, Mine, 1976-

    1999-01-01T23:59:59.000Z

    This thesis proposes a framework to articulate certain criteria in creative spatial productions such as architecture. I discuss that a conformist and unquestioning adaptation to conventional space conceptions limits ...

  19. Hyper Space Complex Number

    E-Print Network [OSTI]

    Shanguang Tan

    2007-04-23T23:59:59.000Z

    A new kind of numbers called Hyper Space Complex Numbers and its algebras are defined and proved. It is with good properties as the classic Complex Numbers, such as expressed in coordinates, triangular and exponent forms and following the associative and commutative laws of addition and multiplication. So the classic Complex Number is developed from in complex plane with two dimensions to in complex space with N dimensions and the number system is enlarged also.

  20. Laser Range Finder Objective: Use a forward pointing laser range finder to

    E-Print Network [OSTI]

    Wirthlin, Michael J.

    Laser Range Finder Objective: Use a forward pointing laser range finder to detect and avoid obstacles. Principle Investigators: Randy Beard, Tim McLain Laser Range Finder Opti-Logic RS400 Laser path, laser detects object. 2. Upon detection, insert cylindrical object into world map and plan path

  1. Modeling of long range frequency sweeping for energetic particle modes

    SciTech Connect (OSTI)

    Nyqvist, R. M. [Department of Earth and Space Sciences, Chalmers University of Technology, SE-412 96 Goeteborg (Sweden); Breizman, B. N. [Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78712 (United States)

    2013-04-15T23:59:59.000Z

    Long range frequency sweeping events are simulated numerically within a one-dimensional, electrostatic bump-on-tail model with fast particle sources and collisions. The numerical solution accounts for fast particle trapping and detrapping in an evolving wave field with a fixed wavelength, and it includes three distinct collisions operators: Drag (dynamical friction on the background electrons), Krook-type collisions, and velocity space diffusion. The effects of particle trapping and diffusion on the evolution of holes and clumps are investigated, and the occurrence of non-monotonic (hooked) frequency sweeping and asymptotically steady holes is discussed. The presented solution constitutes a step towards predictive modeling of frequency sweeping events in more realistic geometries.

  2. Can rodents conceive hyperbolic spaces?

    E-Print Network [OSTI]

    Urdapilleta, Eugenio; Stella, Federico; Treves, Alessandro

    2015-01-01T23:59:59.000Z

    The grid cells discovered in the rodent medial entorhinal cortex have been proposed to provide a metric for Euclidean space, possibly even hardwired in the embryo. Yet one class of models describing the formation of grid unit selectivity is entirely based on developmental self-organization, and as such it predicts that the metric it expresses should reflect the environment to which the animal has adapted. We show that, according to self-organizing models, if raised in a non-Euclidean hyperbolic cage rats should be able to form hyperbolic grids. For a given range of grid spacing relative to the radius of negative curvature of the hyperbolic surface, such grids are predicted to appear as multi-peaked firing maps, in which each peak has seven neighbours instead of the Euclidean six, a prediction that can be tested in experiments. We thus demonstrate that a useful universal neuronal metric, in the sense of a multi-scale ruler and compass that remain unaltered when changing environments, can be extended to other t...

  3. On the interest of carbon-coated plasma reactor for advanced gate stack etching processes

    SciTech Connect (OSTI)

    Ramos, R.; Cunge, G.; Joubert, O. [Freescale Semiconductor Inc., 850 Rue Jean Monnet, 38921 Crolles Cedex (France) and Laboratoire des Technologies de la Microelectronique, CNRS, 17 Rue des Martyrs (c/o CEA-LETI), 38054 Grenoble Cedex 9 (France); Laboratoire des Technologies de la Microelectronique, CNRS, 17 Rue des Martyrs (c/o CEA-LETI), 38054 Grenoble Cedex 9 (France)

    2007-03-15T23:59:59.000Z

    In integrated circuit fabrication the most wide spread strategy to achieve acceptable wafer-to-wafer reproducibility of the gate stack etching process is to dry-clean the plasma reactor walls between each wafer processed. However, inherent exposure of the reactor walls to fluorine-based plasma leads to formation and accumulation of nonvolatile fluoride residues (such as AlF{sub x}) on reactor wall surfaces, which in turn leads to process drifts and metallic contamination of wafers. To prevent this while keeping an Al{sub 2}O{sub 3} reactor wall material, a coating strategy must be used, in which the reactor is coated by a protective layer between wafers. It was shown recently that deposition of carbon-rich coating on the reactor walls allows improvements of process reproducibility and reactor wall protection. The authors show that this strategy results in a higher ion-to-neutral flux ratio to the wafer when compared to other strategies (clean or SiOCl{sub x}-coated reactors) because the carbon walls load reactive radical densities while keeping the same ion current. As a result, the etching rates are generally smaller in a carbon-coated reactor, but a highly anisotropic etching profile can be achieved in silicon and metal gates, whose etching is strongly ion assisted. Furthermore, thanks to the low density of Cl atoms in the carbon-coated reactor, silicon etching can be achieved almost without sidewall passivation layers, allowing fine critical dimension control to be achieved. In addition, it is shown that although the O atom density is also smaller in the carbon-coated reactor, the selectivity toward ultrathin gate oxides is not reduced dramatically. Furthermore, during metal gate etching over high-k dielectric, the low level of parasitic oxygen in the carbon-coated reactor also allows one to minimize bulk silicon reoxidation through HfO{sub 2} high-k gate dielectric. It is then shown that the BCl{sub 3} etching process of the HfO{sub 2} high-k material is highly selective toward the substrate in the carbon-coated reactor, and the carbon-coating strategy thus allows minimizing the silicon recess of the active area of transistors. The authors eventually demonstrate that the carbon-coating strategy drastically reduces on-wafer metallic contamination. Finally, the consumption of carbon from the reactor during the etching process is discussed (and thus the amount of initial deposit that is required to protect the reactor walls) together with the best way of cleaning the reactor after a silicon etching process.

  4. Respiration Induced Heart Motion and Indications of Gated Delivery for Left-Sided Breast Irradiation

    SciTech Connect (OSTI)

    Qi, X. Sharon, E-mail: xiangrong.qi@ucdenver.edu [Department of Radiation Oncology, University of Colorado Denver, Aurora, CO (United States); Hu, Angela [Department of Radiation Oncology, University of Colorado Denver, Aurora, CO (United States); Wang Kai [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States); Newman, Francis [Department of Radiation Oncology, University of Colorado Denver, Aurora, CO (United States); Crosby, Marcus; Hu Bin; White, Julia; Li, X. Allen [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States)

    2012-04-01T23:59:59.000Z

    Purpose: To investigate respiration-induced heart motion for left-sided breast irradiation using a four-dimensional computed tomography (4DCT) technique and to determine novel indications to assess heart motion and identify breast patients who may benefit from a gated treatment. Methods and Materials: Images of 4DCT acquired during free breathing for 20 left-sided breast cancer patients, who underwent whole breast irradiation with or without regional nodal irradiation, were analyzed retrospectively. Dose distributions were reconstructed in the phases of 0%, 20%, and 50%. The intrafractional heart displacement was measured in three selected transverse CT slices using D{sub LAD} (the distance from left ascending aorta to a fixed line [connecting middle point of sternum and the body] drawn on each slice) and maximum heart depth (MHD, the distance of the forefront of the heart to the line). Linear regression analysis was used to correlate these indices with mean heart dose and heart dose volume at different breathing phases. Results: Respiration-induced heart displacement resulted in observable variations in dose delivered to the heart. During a normal free-breathing cycle, heart-induced motion D{sub LAD} and MHD changed up to 9 and 11 mm respectively, resulting in up to 38% and 39% increases of mean doses and V{sub 25.2} for the heart. MHD and D{sub LAD} were positively correlated with mean heart dose and heart dose volume. Respiratory-adapted gated treatment may better spare heart and ipsilateral-lung compared with the conventional non-gated plan in a subset of patients with large D{sub LAD} or MHD variations. Conclusion: Proposed indices offer novel assessment of heart displacement based on 4DCT images. MHD and D{sub LAD} can be used independently or jointly as selection criteria for respiratory gating procedure before treatment planning. Patients with great intrafractional MHD variations or tumor(s) close to the diaphragm may particularly benefit from the gated treatment.

  5. Space Physics at UNH FROM THE DAWN OF SPACE EXPLORATION, UNH space scientists, engineers, and

    E-Print Network [OSTI]

    Pringle, James "Jamie"

    Space Physics at UNH FROM THE DAWN OF SPACE EXPLORATION, UNH space scientists, engineers, and students in the Institute for the Study of Earth, Oceans, and Space (EOS) have worked on mission design and modeling. The Space Science Center, housed at EOS, is engaged in research and graduate education in all

  6. China's Space Robotic Arms Programs

    E-Print Network [OSTI]

    POLLPETER, Kevin

    2013-01-01T23:59:59.000Z

    Blog, “Gen. Chilton on a Space Weapons Treaty,” October 30,archive/2076/general-chilton-on-a-space-weapons-treaty. 31on the military use of space, see Kevin Pollpeter, “China’s

  7. Method and apparatus for making absolute range measurements

    DOE Patents [OSTI]

    Allison, Stephen W. (Knoxville, TN); Cates, Michael R. (Oak Ridge, TN); Key, William S. (Knoxville, TN); Sanders, Alvin J. (Knoxville, TN); Earl, Dennis D. (Knoxville, TN)

    1999-01-01T23:59:59.000Z

    This invention relates to a method and apparatus for making absolute distance or ranging measurements using Fresnel diffraction. The invention employs a source of electromagnetic radiation having a known wavelength or wavelength distribution, which sends a beam of electromagnetic radiation through an object which causes it to be split (hereinafter referred to as a "beamsplitter"), and then to a target. The beam is reflected from the target onto a screen containing an aperture spaced a known distance from the beamsplitter. The aperture is sized so as to produce a Fresnel diffraction pattern. A portion of the beam travels through the aperture to a detector, spaced a known distance from the screen. The detector detects the central intensity of the beam. The distance from the object which causes the beam to be split to the target can then be calculated based upon the known wavelength, aperture radius, beam intensity, and distance from the detector to the screen. Several apparatus embodiments are disclosed for practicing the method embodiments of the present invention.

  8. Method and apparatus for making absolute range measurements

    DOE Patents [OSTI]

    Allison, S.W.; Cates, M.R.; Key, W.S.; Sanders, A.J.; Earl, D.D.

    1999-06-22T23:59:59.000Z

    This invention relates to a method and apparatus for making absolute distance or ranging measurements using Fresnel diffraction. The invention employs a source of electromagnetic radiation having a known wavelength or wavelength distribution, which sends a beam of electromagnetic radiation through an object which causes it to be split (hereinafter referred to as a beam splitter''), and then to a target. The beam is reflected from the target onto a screen containing an aperture spaced a known distance from the beam splitter. The aperture is sized so as to produce a Fresnel diffraction pattern. A portion of the beam travels through the aperture to a detector, spaced a known distance from the screen. The detector detects the central intensity of the beam. The distance from the object which causes the beam to be split to the target can then be calculated based upon the known wavelength, aperture radius, beam intensity, and distance from the detector to the screen. Several apparatus embodiments are disclosed for practicing the method embodiments of the present invention. 9 figs.

  9. Extended range radiation dose-rate monitor

    DOE Patents [OSTI]

    Valentine, Kenneth H. (Knoxville, TN)

    1988-01-01T23:59:59.000Z

    An extended range dose-rate monitor is provided which utilizes the pulse pileup phenomenon that occurs in conventional counting systems to alter the dynamic response of the system to extend the dose-rate counting range. The current pulses from a solid-state detector generated by radiation events are amplified and shaped prior to applying the pulses to the input of a comparator. The comparator generates one logic pulse for each input pulse which exceeds the comparator reference threshold. These pulses are integrated and applied to a meter calibrated to indicate the measured dose-rate in response to the integrator output. A portion of the output signal from the integrator is fed back to vary the comparator reference threshold in proportion to the output count rate to extend the sensitive dynamic detection range by delaying the asymptotic approach of the integrator output toward full scale as measured by the meter.

  10. Supersymmetric inversion of effective-range expansions

    E-Print Network [OSTI]

    Bikashkali Midya; Jérémie Evrard; Sylvain Abramowicz; O. L. Ramírez Suárez; Jean-Marc Sparenberg

    2015-01-16T23:59:59.000Z

    A complete and consistent inversion technique is proposed to derive an accurate interaction potential from an effective-range function for a given partial wave in the neutral case. First, the effective-range function is Taylor or Pad\\'e expanded, which allows high precision fitting of the experimental scattering phase shifts with a minimal number of parameters on a large energy range. Second, the corresponding poles of the scattering matrix are extracted in the complex wave-number plane. Third, the interaction potential is constructed with supersymmetric transformations of the radial Schr\\"odinger equation. As an illustration, the method is applied to the experimental phase shifts of the neutron-proton elastic scattering in the $^1S_0$ and $^1D_2$ channels on the $[0-350]$ MeV laboratory energy interval.

  11. Supersymmetric inversion of effective-range expansions

    E-Print Network [OSTI]

    Midya, Bikashkali; Abramowicz, Sylvain; Suárez, O L Ramírez; Sparenberg, Jean-Marc

    2015-01-01T23:59:59.000Z

    A complete and consistent inversion technique is proposed to derive an accurate interaction potential from an effective-range function for a given partial wave in the neutral case. First, the effective-range function is Taylor or Pad\\'e expanded, which allows high precision fitting of the experimental scattering phase shifts with a minimal number of parameters on a large energy range. Second, the corresponding poles of the scattering matrix are extracted in the complex wave-number plane. Third, the interaction potential is constructed with supersymmetric transformations of the radial Schr\\"odinger equation. As an illustration, the method is applied to the experimental phase shifts of the neutron-proton elastic scattering in the $^1S_0$ and $^1D_2$ channels on the $[0-350]$ MeV laboratory energy interval.

  12. Space Instrument Realization (ISR-5)

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

    5 Space Instrument Realization Providing expertise to support the design and fabrication of space-based custom instrumentation Contacts Group Leader Amy Regan Email Staff...

  13. Compact range for variable-zone measurements

    DOE Patents [OSTI]

    Burnside, Walter D. (Columbus, OH); Rudduck, Roger C. (Columbus, OH); Yu, Jiunn S. (Albuquerque, NM)

    1988-01-01T23:59:59.000Z

    A compact range for testing antennas or radar targets includes a source for directing energy along a feedline toward a parabolic reflector. The reflected wave is a spherical wave with a radius dependent on the distance of the source from the focal point of the reflector.

  14. Range Creek Calibrated Dates Beta-202190

    E-Print Network [OSTI]

    Provancher, William

    Range Creek Calibrated Dates 0 200 400 600 800 1000 1200 1400 Beta-202190 Beta-175753 Beta-175755 Beta-235067 Beta-202189 Beta-214831 Beta-202188 Beta-202191 Beta-203630 Beta-214832 Beta-175754 Beta a Carbon-14 calibrated date (95% CI) between 1000 and 1200 C.E. (Figure 5: Beta-235067). The calibrated

  15. Electrical Engineering Technology (EET) LONG RANGE SCHEDULE

    E-Print Network [OSTI]

    and Machinery C T C T EET 365W Electrical Power & Machinery Laboratory C C, V V C C, V V EET 370T Energy=Virtual Laboratory, W=Web based This schedule is tentative. All Course offerings are subject to minimum enrollmentElectrical Engineering Technology (EET) LONG RANGE SCHEDULE Course Number and Name Fall 2010 Spr

  16. 6, 1018310216, 2006 Long-range transport

    E-Print Network [OSTI]

    Boyer, Edmond

    ACPD 6, 10183­10216, 2006 Long-range transport of Asian dust and air pollutants to Taiwan C.-Y. Lin and air pollutants to Taiwan: observed evidence and model simulation C.-Y. Lin 1 , Z. Wang 2 , W.-N. Chen and air pollutants to Taiwan C.-Y. Lin et al. Title Page Abstract Introduction Conclusions References

  17. Gravitomagnetism and the Earth-Mercury range

    E-Print Network [OSTI]

    Lorenzo Iorio

    2011-08-29T23:59:59.000Z

    We numerically work out the impact of the general relativistic Lense-Thirring effect on the Earth-Mercury range caused by the gravitomagnetic field of the rotating Sun. The peak-to peak nominal amplitude of the resulting time-varying signal amounts to 1.75 10^1 m over a temporal interval 2 yr. Future interplanetary laser ranging facilities should reach a cm-level in ranging to Mercury over comparable timescales; for example, the BepiColombo mission, to be launched in 2014, should reach a 4.5 - 10 cm level over 1 - 8 yr. We looked also at other Newtonian (solar quadrupole mass moment, ring of the minor asteroids, Ceres, Pallas, Vesta, Trans-Neptunian Objects) and post-Newtonian (gravitoelectric Schwarzschild solar field) dynamical effects on the Earth-Mercury range. They act as sources of systematic errors for the Lense-Thirring signal which, in turn, if not properly modeled, may bias the recovery of some key parameters of such other dynamical features of motion. Their nominal peak-to-peak amplitudes are as large as 4 10^5 m (Schwarzschild), 3 10^2 m (Sun's quadrupole), 8 10^1 m (Ceres, Pallas, Vesta), 4 m (ring of minor asteroids), 8 10^-1 m (Trans-Neptunian Objects). Their temporal patterns are different with respect to that of the gravitomagnetic signal.

  18. COLORADO FRONT RANGE SEISMICITY AND SEISMIC HAZARD

    E-Print Network [OSTI]

    Sheehan, Anne F.

    COLORADO FRONT RANGE SEISMICITY AND SEISMIC HAZARD Anne F. Sheehan University of Colorado at Boulder, 2200 Colorado Avenue, Boulder, CO 80309 John D. Godchaux Trinity University, San Antonio, TX Noah Hughes University of Colorado at Boulder, 2200 Colorado Avenue, Boulder, CO 80309 Key Terms: earthquake

  19. Tracking Dynamic Boundary Fronts using Range Sensors

    E-Print Network [OSTI]

    Ramamritham, Krithi

    are being deployed for real-time monitoring applica- tions, such as detecting leakage of hazardous material location whereas in the latter approach a sensor finds approximate distance to a remote location where degrees and gather reflec- tivity and wind velocity information. Lidars (LIght Detection and Ranging

  20. Quantization of empty space

    E-Print Network [OSTI]

    M. A. Zubkov

    2005-11-02T23:59:59.000Z

    We suggest to use "minimal" choice of quantum gravity theory, that is the quantum field theory, in which space-time is seen as Riemannian space and metric (or vierbein field) is the dynamical variable. We then suggest to use the simplest acceptable action, that is the squared curvature action. The correspondent model is renormalizable, has the correct classical limit without matter and can be explored using Euclidian path integral formalism. In order to get nonperturbative results one has to put this model on the lattice. While doing so serious problems with measure over dynamical variables are encountered, which were not solved until present. We suggest to solve them using the representation of Riemannian space as a limiting case of Riemann - Cartan space, where the Poincare group connection plays the role of dynamical variable. We construct manifestly gauge invariant discretization of Riemann - Cartan space. Lattice realization of Poincare gauge transformation naturally acts on the dynamical variables of the constructed discretization. There exists local measure invariant under this gauge transformation, which could be used as a basic element of lattice path integral methods. The correspondent lattice model appears to be useful for numerical simulations.

  1. 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]

    T. Gopinath; Anil Kumar

    2009-09-22T23:59:59.000Z

    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.

  2. Patient radiation dose in prospectively gated axial CT coronary angiography and retrospectively gated helical technique with a 320-detector row CT scanner

    SciTech Connect (OSTI)

    Seguchi, Shigenobu; Aoyama, Takahiko; Koyama, Shuji; Fujii, Keisuke; Yamauchi-Kawaura, Chiyo [Graduate School of Medicine, Nagoya University, Daikominami, Higashi-ku, Nagoya 461-8673 (Japan) and Department of Medical Technology, Nagoya Daini Red Cross Hospital, Myouken-chou, Showa-ku, Nagoya 466-8650 (Japan); Graduate School of Medicine, Nagoya University, Daikominami, Higashi-ku, Nagoya 461-8673 (Japan); Section of Radiological Protection, National Institute of Radiological Sciences, Anagawa, Inage-ku, Chiba 263-8555 (Japan); Graduate School of Medicine, Nagoya University, Daikominami, Higashi-ku, Nagoya 461-8673 (Japan)

    2010-11-15T23:59:59.000Z

    Purpose: The aim of this study was to evaluate radiation dose to patients undergoing computed tomography coronary angiography (CTCA) for prospectively gated axial (PGA) technique and retrospectively gated helical (RGH) technique. Methods: Radiation doses were measured for a 320-detector row CT scanner (Toshiba Aquilion ONE) using small sized silicon-photodiode dosimeters, which were implanted at various tissue and organ positions within an anthropomorphic phantom for a standard Japanese adult male. Output signals from photodiode dosimeters were read out on a personal computer, from which organ and effective doses were computed according to guidelines published in the International Commission on Radiological Protection Publication 103. Results: Organs that received high doses were breast, followed by lung, esophagus, and liver. Breast doses obtained with PGA technique and a phase window width of 16% at a simulated heart rate of 60 beats per minute were 13 mGy compared to 53 mGy with RGH technique using electrocardiographically dependent dose modulation at the same phase window width as that in PGA technique. Effective doses obtained in this case were 4.7 and 20 mSv for the PGA and RGH techniques, respectively. Conversion factors of dose length product to the effective dose in PGA and RGH were 0.022 and 0.025 mSv mGy{sup -1} cm{sup -1} with a scan length of 140 mm. Conclusions: CTCA performed with PGA technique provided a substantial effective dose reduction, i.e., 70%-76%, compared to RGH technique using the dose modulation at the same phase windows as those in PGA technique. Though radiation doses in CTCA with RGH technique were the same level as, or some higher than, those in conventional coronary angiography (CCA), the use of PGA technique reduced organ and effective doses to levels less than CCA except for breast dose.

  3. 3740SPACE REPURPOSING PROCEDURE Client identifies

    E-Print Network [OSTI]

    Page 1 3740SPACE REPURPOSING PROCEDURE Client identifies space repurposing requirement Client completes space request form Submit space request form to Space Management Office Space Management Office acknowledge reciept Is space form completed accurately Space Management Office conduct space analysis Does

  4. Short-Range Nucleon-Nucleon Correlations

    SciTech Connect (OSTI)

    Douglas Higinbotham

    2011-10-01T23:59:59.000Z

    Valence-shell nucleon knock-out experiments, such as 12C(e,e'p)11B, measure less strength then is predicted by independent particle shell model calculations. The theoretical solution to this problem is to include the correlations between the nucleons in the nucleus in the calculations. Motivated by these results, many electron scattering experiments have tried to directly observe these correlations in order to gain new insight into the short-range part of the nucleon-nucleon potential. Unfortunately, many competing mechanisms can cause the same observable final-state as an initial-state correlation, making truly isolating the signal extremely challenging. This paper reviews the recent experimental evidence for short-range correlations, as well as explores the possibility that such correlations are responsible for the EMC effect in the 0.3 < xB < 0.7 deep inelastic scattering ratios.

  5. Short-Range Nucleon-Nucleon Correlations

    SciTech Connect (OSTI)

    Higinbotham, Douglas W. [Thomas Jefferson National Accelerator Facility, Newport News, VA 23601 (United States)

    2011-10-24T23:59:59.000Z

    Valence-shell nucleon knock-out experiments, such as {sup 12}C(e,e'p){sup 11}B, measure less strength then is predicted by independent particle shell model calculations. The theoretical solution to this problem is to include the correlations between the nucleons in the nucleus in the calculations. Motivated by these results, many electron scattering experiments have tried to isolate the signal from these correlations in order to gain new insight into the short-range part of the nucleon-nucleon potential. Unfortunately, many competing mechanisms can cause the same observable final-state as an initial-state correlation, making truly isolating the signal extremely challenging. This paper reviews the recent experimental evidence for short-range correlations, as well as explores the possibility that such correlations are responsible for the EMC effect in the 0.3

  6. Nonlinear classification of Banach spaces

    E-Print Network [OSTI]

    Randrianarivony, Nirina Lovasoa

    2005-11-01T23:59:59.000Z

    Hilbert space when p> 2. We then build upon the method of this proof to show that a quasi-Banach space coarsely embeds into a Hilbert space if and only if it is isomorphic to a subspace of L0(??) for some probability space (?,B,??)....

  7. The NASA Food Commercial Space

    E-Print Network [OSTI]

    Lin, Zhiqun

    The NASA Food Technology Commercial Space Center and How Your Company Can Participate space Commercial Space Center Iowa State University 2901 South Loop Drive, Suite 3700 Ames, IA 50010-8632 Phone Manager NASA Food Technology Commercial Space Center Iowa State University 2901 South Loop Drive, Suite

  8. Representation of noncommutative phase space

    E-Print Network [OSTI]

    Kang Li; Jianhua Wang; Chiyi Chen

    2005-08-16T23:59:59.000Z

    The representations of the algebra of coordinates and momenta of noncommutative phase space are given. We study, as an example, the harmonic oscillator in noncommutative space of any dimension. Finally the map of Sch$\\ddot{o}$dinger equation from noncommutative space to commutative space is obtained.

  9. Intermediate Range Order and Transport Processes

    E-Print Network [OSTI]

    Harting, Jens

    Simulation Study February 7, 2005 Patrick Pfleiderer ICP, University of Stuttgart in Collaboration: 2 2 21 ),...,,( dt d mV i iNii r rrrF =-= t m ttt ttt t m t ttttt i ii ii i i iii 2 )()( )()( 2-range and responsible for covalent character · obtained from ab initio calculations · time step: 1.6fs 6 2 r C eA r eqq

  10. Causality and the effective range expansion

    E-Print Network [OSTI]

    H. -W. Hammer; Dean Lee

    2010-07-26T23:59:59.000Z

    We derive the generalization of Wigner's causality bounds and Bethe's integral formula for the effective range parameter to arbitrary dimension and arbitrary angular momentum. We also discuss the impact of these constraints on the separation of low- and high-momentum scales and universality in low-energy scattering. Some of our results were summarized earlier in a letter publication. In this work, we present full derivations and several detailed examples.

  11. Rangely, Colorado: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to: navigation, search RAPIDColoradosource HistoryRaftRamsey,Rangely, Colorado: Energy

  12. Fuzzy Space-Time

    E-Print Network [OSTI]

    J. Madore

    1996-07-26T23:59:59.000Z

    A review is made of recent efforts to define linear connections and their corresponding curvature within the context of noncommutative geometry. As an application it is suggested that it is possible to identify the gravitational field as a phenomenological manifestation of space-time commutation relations and to thereby clarify its role as an ultraviolet regularizer.

  13. Universal conductance fluctuations in electrolyte-gated SrTiO{sub 3} nanostructures

    SciTech Connect (OSTI)

    Stanwyck, Sam W. [Department of Applied Physics, Stanford University, Stanford, California 94305 (United States)] [Department of Applied Physics, Stanford University, Stanford, California 94305 (United States); Gallagher, P.; Williams, J. R.; Goldhaber-Gordon, David [Department of Physics, Stanford University, Stanford, California 94305 (United States)] [Department of Physics, Stanford University, Stanford, California 94305 (United States)

    2013-11-18T23:59:59.000Z

    We report low-temperature magnetoconductance measurements of a patterned two-dimensional electron system at the surface of strontium titanate, gated by an ionic liquid electrolyte. We observe universal conductance fluctuations, a signature of phase-coherent transport in mesoscopic devices. From the universal conductance fluctuations, we extract an electron dephasing rate linear in temperature, characteristic of electron-electron interaction in a disordered conductor. The dephasing rate has a temperature-independent offset, which could possibly be explained by the presence of unscreened local magnetic moments in the sample.

  14. Excitation spectrum as a resource for efficient two-qubit entangling gates

    E-Print Network [OSTI]

    Dmitry Solenov; Sophia E. Economou; Thomas L. Reinecke

    2014-04-03T23:59:59.000Z

    Physical systems representing qubits typically have one or more accessible quantum states in addition to the two states that encode the qubit. We demonstrate that active involvement of such auxiliary states can be beneficial in constructing entangling two-qubit operations. We investigate the general case of two multi-state quantum systems coupled via a quantum resonator. The approach is illustrated with the examples of three systems: self-assembled InAs/GaAs quantum dots, NV-centers in diamond, and superconducting transmon qubits. Fidelities of the gate operations are calculated based on numerical simulations of each system.

  15. Field programmable gate array-assigned complex-valued computation and its limits

    SciTech Connect (OSTI)

    Bernard-Schwarz, Maria, E-mail: maria.bernardschwarz@ni.com [National Instruments, Ganghoferstrasse 70b, 80339 Munich (Germany); Institute of Applied Physics, TU Wien, Wiedner Hauptstrasse 8, 1040 Wien (Austria); Zwick, Wolfgang; Klier, Jochen [National Instruments, Ganghoferstrasse 70b, 80339 Munich (Germany); Wenzel, Lothar [National Instruments, 11500 N MOPac Expy, Austin, Texas 78759 (United States); Gröschl, Martin [Institute of Applied Physics, TU Wien, Wiedner Hauptstrasse 8, 1040 Wien (Austria)

    2014-09-15T23:59:59.000Z

    We discuss how leveraging Field Programmable Gate Array (FPGA) technology as part of a high performance computing platform reduces latency to meet the demanding real time constraints of a quantum optics simulation. Implementations of complex-valued operations using fixed point numeric on a Virtex-5 FPGA compare favorably to more conventional solutions on a central processing unit. Our investigation explores the performance of multiple fixed point options along with a traditional 64 bits floating point version. With this information, the lowest execution times can be estimated. Relative error is examined to ensure simulation accuracy is maintained.

  16. Modern testing meets wide range of objectives

    SciTech Connect (OSTI)

    Ehlig-Economides, C.A.; Hegeman, P. (Schlumberger Oilfield Services, Houston, TX (United States)); Clark, G. (Schlumberger Oilfield Services, Aberdeen (United Kingdom))

    1994-08-01T23:59:59.000Z

    Testing sequences in two very different wells illustrate the wide range of objectives that are met with modern testing procedures. The first example is a drill stem test in an exploration well. The second test is in an established producing well. The exploration well test incorporated tubing-conveyed perforating, fluid sampling, production logging, and matrix stimulation to evaluate and properly treat near-well bore damage, as well as to investigate reservoir volume and characterize boundaries. The test on the established producer evaluated whether a workover could remedy lower than expected productivity. Production logging was combined with stationary transient measurements.

  17. Optical range measurement system: principles and applications

    E-Print Network [OSTI]

    Roan, Tian-Ming Philip

    1992-01-01T23:59:59.000Z

    modulated infrared beam from a LED to a targeted vehicle and receiving that being reflected, the relative distance between the host and target can be determined by the ORMS. There are basically two distinctive types of ORMS's. 1. Phase Shift ORMS... of the road, b. a vehicle parked on the shoulder of the highway, c. other targets in the scene within the effective range of the ranger. 14 A LED display could also be arranged to warn the driver, but this does not seem to be necessary. The driver may...

  18. Short range correlations and the EMC effect

    SciTech Connect (OSTI)

    E. Piasetzky, L.B. Weinstein, D.W. Higinbotham, J. Gomez, O. Hen, R. Shneor

    2011-04-01T23:59:59.000Z

    The magnitude of the EMC effect measured in electron deep inelastic scattering (DIS) is linearly related to the Short Range Correlation (SRC) scaling factor obtained from electron inclusive scattering. We speculate that the observed correlation is due to the fact that both the EMC effect and SRC are dominated by high momentum nucleons in the nucleus. The observed phenomenological relationship can be used to extract the ratio of the deuteron to the free pn-pair cross sections, the DIS cross section for a free neutron, View the MathML source, the ratio of the free neutron to free proton structure functions, and the u/d ratio in a free proton.

  19. Rangely Oilfield Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar PowerstoriesNrelPartnerType Jump to:Co JumpRETScreen Logo: Range Fuels Name:Jump

  20. APS Long Range Schedule FY1996

    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 Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies |November 2011Astudies ColoradoTechnical109)Long Range

  1. APS Long Range Schedule FY1997

    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 Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies |November 2011Astudies ColoradoTechnical109)Long Range7 Beamline

  2. APS Long Range Schedule FY1998

    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 Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies |November 2011Astudies ColoradoTechnical109)Long Range7 Beamline8

  3. APS Long Range Schedule FY1999

    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 Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies |November 2011Astudies ColoradoTechnical109)Long Range7

  4. APS Long Range Schedule FY2001

    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 Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies |November 2011Astudies ColoradoTechnical109)Long Range7

  5. APS Long Range Schedule FY2002

    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 Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies |November 2011Astudies ColoradoTechnical109)Long Range7

  6. APS Long Range Schedule FY2004

    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 Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies |November 2011Astudies ColoradoTechnical109)Long Range7

  7. APS Long Range Schedule FY2005

    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 Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies |November 2011Astudies ColoradoTechnical109)Long Range72005 Long

  8. APS Long Range Schedule FY2006

    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 Jun Jul(Summary)morphinanInformation Desert SouthwestTechnologies |November 2011Astudies ColoradoTechnical109)Long Range72005

  9. Electron Transport Behavior on Gate Length Scaling in Sub-50 nm GaAs Metal Semiconductor Field Effect Transistors

    SciTech Connect (OSTI)

    Han, Jaeheon [Department of Electronic Engineering, Kangnam University, 111 Gugal-dong, Giheung-gu, Yongin-city, Gyeonggi-do, Korea 446-702 (Korea, Republic of)

    2011-12-23T23:59:59.000Z

    Short channel GaAs Metal Semiconductor Field Effect Transistors (MESFETs) have been fabricated with gate length to 20 nm, in order to examine the characteristics of sub-50 nm MESFET scaling. Here the rise in the measured transconductance is mainly attributed to electron velocity overshoot. For gate lengths below 40 nm, however, the transconductance drops suddenly. The behavior of velocity overshoot and its degradation is investigated and simulated by using a transport model based on the retarded Langevin equation (RLE). This indicates the existence of a minimum acceleration length needed for the carriers to reach the overshoot velocity. The argument shows that the source resistance must be included as an internal element, or appropriate boundary condition, of relative importance in any model where the gate length is comparable to the inelastic mean free path of the carriers.

  10. Gate Access

    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 Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCIResearch to sponsor Brazilianmaterials

  11. Gate Access

    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 DocumentationP-SeriesFlickr Flickr Editor'sshort version) Thelong version)short

  12. Birthplace of America's Missile and Space Activity White Sands Missile Range is the largest overland military test range in the United

    E-Print Network [OSTI]

    scientists led, by Dr. Werhner von Braun, were assigned to Fort Bliss, Texas, just 50 miles down the road

  13. Single trap dynamics in electrolyte-gated Si-nanowire field effect transistors

    SciTech Connect (OSTI)

    Pud, S.; Li, J.; Offenhäusser, A.; Vitusevich, S. A., E-mail: s.vitusevich@fz-juelich.de [Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich, 52425 Jülich (Germany); Gasparyan, F. [Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich, 52425 Jülich (Germany); Department of Semiconductor Physics and Microelectronics, Yerevan State University, 1 Alex Manoogian St., 0025 Yerevan (Armenia); Petrychuk, M. [Radiophysics Faculty, T. Shevchenko National University of Kyiv, 60 Volodymyrska St., 01601 Kyiv (Ukraine)

    2014-06-21T23:59:59.000Z

    Liquid-gated silicon nanowire (NW) field effect transistors (FETs) are fabricated and their transport and dynamic properties are investigated experimentally and theoretically. Random telegraph signal (RTS) fluctuations were registered in the nanolength channel FETs and used for the experimental and theoretical analysis of transport properties. The drain current and the carrier interaction processes with a single trap are analyzed using a quantum-mechanical evaluation of carrier distribution in the channel and also a classical evaluation. Both approaches are applied to treat the experimental data and to define an appropriate solution for describing the drain current behavior influenced by single trap resulting in RTS fluctuations in the Si NW FETs. It is shown that quantization and tunneling effects explain the behavior of the electron capture time on the single trap. Based on the experimental data, parameters of the single trap were determined. The trap is located at a distance of about 2?nm from the interface Si/SiO{sub 2} and has a repulsive character. The theory of dynamic processes in liquid-gated Si NW FET put forward here is in good agreement with experimental observations of transport in the structures and highlights the importance of quantization in carrier distribution for analyzing dynamic processes in the nanostructures.

  14. Gate Metal-Induced Diffusion and Interface Reactions in Hf Oxide Films on Si

    SciTech Connect (OSTI)

    Goncharova, Lyudmila V.; Dalponte, Mateus; Celik, Ozgur; Garfunkel, Eric; Gustafsson, Torgny [Departments of Physics and Chemistry, and Laboratory for Surface Modification, Rutgers University, Piscataway, NJ 08854 (United States); Lysaght, Pat S.; Bersuker, Gennadi I. [Sematech, Austin, Texas 78741 (United States)

    2007-09-26T23:59:59.000Z

    When metal electrodes are deposited on a high-{kappa} metal-oxide/SiO{sub 2}/Si stack, chemical interactions may occur both at the metal/high-{kappa} and the high-{kappa}/Si interfaces, causing changes in electrical performance. We report here results from medium energy ion scattering (MEIS) and x-ray photoelectron (XPS) studies of oxygen and silicon transport and interfacial layer reactions in multilayer gate stacks. Our results show that Ti deposition on HfO{sub 2}/SiO{sub 2}/Si stacks causes reduction of the SiO{sub 2} interfacial layer and (to a lesser extent) the HfO{sub 2} layer. Silicon atoms initially present in the interfacial SiO{sub 2} layer incorporate into the bottom of the high-{kappa} layer. Some evidence for titanium-silicon interdiffusion through the high-{kappa} film in the presence of a titanium gate in crystalline HfO{sub 2} films is also reported.

  15. Nucleotide-induced conformational motions and transmembrane gating dynamics in a bacterial ABC transporter

    E-Print Network [OSTI]

    Holger Flechsig

    2014-02-07T23:59:59.000Z

    ATP-binding cassette (ABC) transporters are integral membrane proteins that mediate the exchange of diverse substrates across membranes powered by ATP hydrolysis. We report results of coarse-grained dynamical simulations performed for the bacterial heme transporter HmuUV. Based on the nucleotide-free structure, we have constructed a ligand-elastic-network description for this protein and investigated ATP-induced conformational motions in structurally resolved computer experiments. As we found, interactions with nucleotides resulted in generic motions which are functional and robust. Upon binding of ATP-mimicking ligands the structure changed from a conformation in which the nucleotide-binding domains formed an open shape, to a conformation in which they were found in tight contact and the transmembrane domains were rotated. The heme channel was broadened in the ligand-bound complex and the gate to the cytoplasm, which was closed in the nucleotide-free conformation, was rendered open by a mechanism that involved tilting motions of essential transmembrane helices. Based on our findings we propose that the HmuUV transporter behaves like a `simple' mechanical device in which, induced by binding of ATP ligands, linear motions of the nucleotide-binding domains are translated into rotational motions and internal tilting dynamics of the transmembrane domains that control gating inside the heme pathway.

  16. Orbit Spaces in Superconductivity

    E-Print Network [OSTI]

    Vittorino Talamini

    2006-07-30T23:59:59.000Z

    In the framework of Landau theory of phase transitions one is interested to describe all the possible low symmetry ``superconducting'' phases allowed for a given superconductor crystal and to determine the conditions under which this crystal undergoes a phase transition. These problems are best described and analyzed in the orbit space of the high symmetry group of the ``normal, non-superconducting'' phase of the crystal. In this article it is worked out a simple example concerning superconductivity, that shows the P-matrix method to determine the equations and inequalities defining the orbit space and its stratification. This approach is of general validity and can be used in all physical problems that make use of invariant functions, as long as the symmetry group is compact.

  17. Essays in Space Science

    SciTech Connect (OSTI)

    Ramaty, R.; Cline, T.L.; Ormes, J.F.

    1987-06-01T23:59:59.000Z

    The papers presented cover a broad segment of space research and are an acknowledgement of the personal involvement of Frank McDonald in many of these efforts. The totality of the papers were chosen so as to sample the scientific areas influenced by him in a significant manner. Three broad areas are covered: particles and fields of the solar system; cosmic ray astrophysics; and gamma ray, x ray, and infrared astronomics.

  18. Conductance modulation in topological insulator Bi{sub 2}Se{sub 3} thin films with ionic liquid gating

    SciTech Connect (OSTI)

    Son, Jaesung; Banerjee, Karan; Yang, Hyunsoo, E-mail: eleyang@nus.edu.sg [Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576 (Singapore)] [Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576 (Singapore); Brahlek, Matthew; Koirala, Nikesh; Oh, Seongshik [Department of Physics and Astronomy, Rutgers, The State University of New Jersey, 136 Frelinghuysen Road, Piscataway, New Jersey 08854 (United States)] [Department of Physics and Astronomy, Rutgers, The State University of New Jersey, 136 Frelinghuysen Road, Piscataway, New Jersey 08854 (United States); Lee, Seoung-Ki [School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of) [School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749 (Korea, Republic of); Ahn, Jong-Hyun [School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749 (Korea, Republic of)] [School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749 (Korea, Republic of)

    2013-11-18T23:59:59.000Z

    A Bi{sub 2}Se{sub 3} topological insulator field effect transistor is investigated by using ionic liquid as an electric double layer gating material, leading to a conductance modulation of 365% at room temperature. We discuss the role of charged impurities on the transport properties. The conductance modulation with gate bias is due to a change in the carrier concentration, whereas the temperature dependent conductance change is originated from a change in mobility. Large conductance modulation at room temperature along with the transparent optical properties makes topological insulators as an interesting (opto)electronic material.

  19. Experimental investigation of bright spots in broadband, gated x-ray images of ignition-scale implosions on the National Ignition Facility

    SciTech Connect (OSTI)

    Barrios, M. A.; Suter, L. J.; Glenn, S.; Benedetti, L. R.; Bradley, D. K.; Collins, G. W.; Hammel, B. A.; Izumi, N.; Ma, T.; Scott, H.; Smalyuk, V. A. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)] [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Regan, S. P.; Epstein, R. [Laboratory for Laser Energetics, University of Rochester 250 East River Road, Rochester, New York 14623-199 (United States)] [Laboratory for Laser Energetics, University of Rochester 250 East River Road, Rochester, New York 14623-199 (United States); Kyrala, G. A. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

    2013-07-15T23:59:59.000Z

    Bright spots in the hot spot intensity profile of gated x-ray images of ignition-scale implosions at the National Ignition Facility [G. H. Miller et al., Opt. Eng. 443, (2004)] are observed. X-ray images of cryogenically layered deuterium-tritium (DT) and tritium-hydrogen-deuterium (THD) ice capsules, and gas filled plastic shell capsules (Symcap) were recorded along the hohlraum symmetry axis. Heterogeneous mixing of ablator material and fuel into the hot spot (i.e., hot-spot mix) by hydrodynamic instabilities causes the bright spots. Hot-spot mix increases the radiative cooling of the hot spot. Fourier analysis of the x-ray images is used to quantify the evolution of bright spots in both x- and k-space. Bright spot images were azimuthally binned to characterize bright spot location relative to known isolated defects on the capsule surface. A strong correlation is observed between bright spot location and the fill tube for both Symcap and cryogenically layered DT and THD ice targets, indicating the fill tube is a significant seed for the ablation front instability causing hot-spot mix. The fill tube is the predominant seed for Symcaps, while other capsule non-uniformities are dominant seeds for the cryogenically layered DT and THD ice targets. A comparison of the bright spot power observed for Si- and Ge-doped ablator targets shows heterogeneous mix in Symcap targets is mostly material from the doped ablator layer.

  20. P-type and N-type multi-gate polycrystalline silicon vertical thin film transistors based on low-temperature technology

    E-Print Network [OSTI]

    Boyer, Edmond

    is obtained. P-type and N-type vertical TFTs have shown symmetric electrical characteristics. DifferentP-type and N-type multi-gate polycrystalline silicon vertical thin film transistors based on low) ABSTRACT P-type and N-type multi-gate vertical thin film transistors (vertical TFTs) have been fabricated

  1. In Proceedings of the 8th IEEE International Conference on Tools with Artificial Intelligence, Toulouse, France, 1996. GATE: An Environment to Support Research and Development

    E-Print Network [OSTI]

    Gaizauskas, Rob

    describe a software environment to support research and development in natural language (NL) engineering, Toulouse, France, 1996. GATE: An Environment to Support Research and Development in Natural Language. This environment ­ GATE (General Architecture for Text Engineering) ­ aims to advance research in the area

  2. In Proceedings of the 8th IEEE International Conference on Tools with Artificial Intelligence, Toulouse, France, 1996. GATE: An Environment to Support Research and Development

    E-Print Network [OSTI]

    Gaizauskas, Rob

    describe a software environment to support research and development in natural language (NL) engineering, Toulouse, France, 1996. GATE: An Environment to Support Research and Development in Natural Language. This environment -- GATE (General Architecture for Text Engineering) -- aims to advance research in the area

  3. Ultra High Mass Range Mass Spectrometer System

    DOE Patents [OSTI]

    Reilly, Peter T. A. [Knoxville, TN

    2005-12-06T23:59:59.000Z

    Applicant's present invention comprises mass spectrometer systems that operate in a mass range from 1 to 10.sup.16 DA. The mass spectrometer system comprising an inlet system comprising an aerodynamic lens system, a reverse jet being a gas flux generated in an annulus moving in a reverse direction and a multipole ion guide; a digital ion trap; and a thermal vaporization/ionization detector system. Applicant's present invention further comprises a quadrupole mass spectrometer system comprising an inlet system having a quadrupole mass filter and a thermal vaporization/ionization detector system. Applicant's present invention further comprises an inlet system for use with a mass spectrometer system, a method for slowing energetic particles using an inlet system. Applicant's present invention also comprises a detector device and a method for detecting high mass charged particles.

  4. Scannerless loss modulated flash color range imaging

    DOE Patents [OSTI]

    Sandusky, John V. (Albuquerque, NM); Pitts, Todd Alan (Rio Rancho, NM)

    2008-09-02T23:59:59.000Z

    Scannerless loss modulated flash color range imaging methods and apparatus are disclosed for producing three dimensional (3D) images of a target within a scene. Apparatus and methods according to the present invention comprise a light source providing at least three wavelengths (passbands) of illumination that are each loss modulated, phase delayed and simultaneously directed to illuminate the target. Phase delayed light backscattered from the target is spectrally filtered, demodulated and imaged by a planar detector array. Images of the intensity distributions for the selected wavelengths are obtained under modulated and unmodulated (dc) illumination of the target, and the information contained in the images combined to produce a 3D image of the target.

  5. Scannerless loss modulated flash color range imaging

    DOE Patents [OSTI]

    Sandusky, John V. (Albuquerque, NM); Pitts, Todd Alan (Rio Rancho, NM)

    2009-02-24T23:59:59.000Z

    Scannerless loss modulated flash color range imaging methods and apparatus are disclosed for producing three dimensional (3D) images of a target within a scene. Apparatus and methods according to the present invention comprise a light source providing at least three wavelengths (passbands) of illumination that are each loss modulated, phase delayed and simultaneously directed to illuminate the target. Phase delayed light backscattered from the target is spectrally filtered, demodulated and imaged by a planar detector array. Images of the intensity distributions for the selected wavelengths are obtained under modulated and unmodulated (dc) illumination of the target, and the information contained in the images combined to produce a 3D image of the target.

  6. Short Range Correlations and the EMC Effect

    SciTech Connect (OSTI)

    L.B. Weinstein, E. Piasetzky, D.W. Higinbotham, J. Gomez, O. Hen, R. Shneor

    2011-02-01T23:59:59.000Z

    This Letter shows quantitatively that the magnitude of the EMC effect measured in electron deep inelastic scattering at intermediate xB, 0.35?xB?0.7, is linearly related to the short range correlation (SRC) scale factor obtained from electron inclusive scattering at xB?1. The observed phenomenological relationship is used to extract the ratio of the deuteron to the free pn pair cross sections and F2n/F2p, the ratio of the free neutron to free proton structure functions. We speculate that the observed correlation is because both the EMC effect and SRC are dominated by the high virtuality (high momentum) nucleons in the nucleus.

  7. Short Range Correlations and the EMC Effect

    E-Print Network [OSTI]

    L. B. Weinstein; E. Piasetzky; D. W. Higinbotham; J. Gomez; O. Hen; R. Shneor

    2011-01-18T23:59:59.000Z

    This paper shows quantitatively that the magnitude of the EMC effect measured in electron deep inelastic scattering (DIS) at intermediate $x_B$, $0.35\\le x_B\\le 0.7$, is linearly related to the Short Range Correlation (SRC) scaling factor obtained from electron inclusive scattering at $x_B\\ge 1.$. The observed phenomenological relationship is used to extract the ratio of the deuteron to the free $pn$ pair cross sections, the DIS cross section for a free neutron, and $F_2^n/F_2^p$, the ratio of the free neutron to free proton structure functions. We speculate that the observed correlation is because both the EMC effect and SRC are dominated by the high virtuality (high momentum) nucleons in the nucleus.

  8. Short Range Correlations and the EMC Effect

    SciTech Connect (OSTI)

    Weinstein, L. B. [Old Dominion University, Norfolk, Virginia 23529 (United States); Piasetzky, E.; Hen, O.; Shneor, R. [Tel Aviv University, Tel Aviv 69978 (Israel); Higinbotham, D. W.; Gomez, J. [Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States)

    2011-02-04T23:59:59.000Z

    This Letter shows quantitatively that the magnitude of the EMC effect measured in electron deep inelastic scattering at intermediate x{sub B}, 0.35{<=}x{sub B{<=}}0.7, is linearly related to the short range correlation (SRC) scale factor obtained from electron inclusive scattering at x{sub B{>=}}1. The observed phenomenological relationship is used to extract the ratio of the deuteron to the free pn pair cross sections and F{sub 2}{sup n}/F{sub 2}{sup p}, the ratio of the free neutron to free proton structure functions. We speculate that the observed correlation is because both the EMC effect and SRC are dominated by the high virtuality (high momentum) nucleons in the nucleus.

  9. National Aeronautics and Space Administration International Space Station

    E-Print Network [OSTI]

    and technological endeavor ever undertaken, involving support from five space agencies representing 16 nations. Once's solar panels exceed the wingspan of a Boeing 777 jetliner and harness enough energy from the sunNational Aeronautics and Space Administration NASAfacts International Space Station Clearly

  10. Update and Expansion of the Center of Automotive Technology Excellence Under the Graduate Automotive Technology Education (GATE) Program at the University of Tennessee, Knoxville

    SciTech Connect (OSTI)

    Irick, David

    2012-08-30T23:59:59.000Z

    The Graduate Automotive Technology Education (GATE) Center at the University of Tennessee, Knoxville has completed its seventh year of operation under this agreement, its thirteenth year in total. During this period the Center has involved eleven GATE Fellows and three GATE Research Assistants in preparing them to contribute to advanced automotive technologies in the center’s focus area: Advanced Hybrid Propulsion and Control Systems. In addition to the impact that the Center has had on the students and faculty involved, the presence of the center has led to the acquisition of resources that probably would not have been obtained if the GATE Center had not existed. Significant industry interaction such as equipment donations, and support for GATE students has been realized. The value of the total resources brought to the university (including related research contracts) exceeds $2,000,000.

  11. Verification Method for SSI Problems with Extended Parameter Ranges |

    Office of Environmental Management (EM)

    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 Jun Jul(Summary) "of EnergyEnergyENERGYWomen Owned SmallOf The 2012Nuclear GuideReport |(GATE)DepartmentFleets | Department

  12. INTERNATIONAL SPACE EXPLORATION COORDINATION GROUP

    E-Print Network [OSTI]

    space exploration infrastructure standards facilitating interoperability through an international with relevant existing international working groups/ organisations. · Preparation and Organization of a WS1 INTERNATIONAL SPACE EXPLORATION COORDINATION GROUP WORKPLAN Update following 3rd ISECG Meeting

  13. Thermoacoustic power systems for space applications

    SciTech Connect (OSTI)

    Backhaus, S. N. (Scott N.); Tward, E. (Emanual); Pedach, M. (Michael)

    2001-01-01T23:59:59.000Z

    Future NASA deep-space missions will require radioisotope-powered electric generators that are just as reliable as current RTGs, but more efficient and of higher specific power (W/kg). Thermoacoustic engines can convert high-temperature heat into acoustic, or PV, power without moving parts at 30% efficiency. Consisting of only tubes and a few heat exchangers, these engines are low mass and promise to be highly reliable. Coupling a thermoacoustic engine to a low-mass, highly reliable and efficient linear alternator will create a heat-driven electric generator suitable for deep-space applications. Data will be presented on the first tests of a demonstration thermoacoustic engine designed for the 100-Watt power range.

  14. Initial tests of thermoacoustic space power engine.

    SciTech Connect (OSTI)

    Backhaus, S. N. (Scott N.)

    2002-01-01T23:59:59.000Z

    Future NASA deep-space missions will require radioisotope-powered electric generators that are just as reliable as current RTGs, but more efficient and of higher specific power (Wikg). Thennoacoustic engines at the -1-kW scale have converted high-temperature heat into acoustic, or PV, power without moving parts at 30% efficiency. Consisting of only tubes and a few heat exchangers, thennoacoustic engines are low mass and promise to be highly reliable. Coupling a thennoacoustic engine to a low mass, highly reliable and efficient linear alternator will create a heat-driven electric generator suitable for deep-space applications. Conversion efficiency data will be presented on a demonstration thennoacoustic engine designed for the 1 00-Watt power range.

  15. Demystifying White Spaces Xuemin Hongl

    E-Print Network [OSTI]

    Wang, Cheng-Xiang

    Demystifying White Spaces Xuemin Hongl , Cheng-Xiang Wangl , John Thompson2 , and Yan Zhang3 1Joint.wang@hw.ac.uk.john.thompson@ed.ac.uk. yanzhang@ieee.org Abstract-White spaces refer to the unused frequency voids across time or space. The vast existence of white spaces has been validated by many measurements and is widely regarded as an undesirable

  16. aeronautical test range: Topics by E-print Network

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

    16. This work was supported by the National Aeronautics and Space-2199 NASACR-1999-209827 ICASE Report No. 99-50 Efficient Symbolic State-space Construction for...

  17. TABLE OF CONTENTS 1996 LONG RANGE DEVELOPMENT PLAN

    E-Print Network [OSTI]

    Mullins, Dyche

    Community Dental Clinic 157 - Hunters Point Animal Care Facility 158 - Oyster Point 160 - Harrison Street Existing Space Profile, December 1994 157 26. Hunters Point Animal Care Facility Existing Space Profile

  18. TABLE OF CONTENTS 1996 LONG RANGE DEVELOPMENT PLAN

    E-Print Network [OSTI]

    Mullins, Dyche

    - Buchanan Street Community Dental Clinic 157 - Hunters Point Animal Care Facility 158 - Oyster Point 160 Existing Space Profile, December 1994 157 26. Hunters Point Animal Care Facility Existing Space Profile

  19. Symplectic space and orthogonal space of n qubits

    E-Print Network [OSTI]

    Jian-Wei Xu

    2010-11-14T23:59:59.000Z

    In the Hilbert space of n qubits, we introduce the symplectic space (n odd) and the orthogonal space (n even) via the spin-flip operator. Under this mathematical structure we discuss some properties of n qubits, including homomorphically mapping the local operations of n qubits into the symplectic group or orthogonal group, and prove that the generalized ``magic basis'' is just the bi-orthonormal basis (that is, the orthonormal basis of both Hilbert space and the orthogonal space ). Finally, an example is given to discuss the application in physics of this mathematical structure.

  20. Josephson-junction arrays with long-range interactions

    SciTech Connect (OSTI)

    Harbaugh, J.K.; Stroud, D. [Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States)] [Department of Physics, Ohio State University, Columbus, Ohio 43210 (United States)

    1997-10-01T23:59:59.000Z

    We calculate the current-voltage (IV) characteristics of a Josephson-junction array with long-range interactions. The array consists of two sets of equally spaced parallel superconducting wires placed at right angles. A Josephson junction is formed at every point wherever the wires cross. We treat each such junction as an overdamped resistively shunted junction, and each wire segment between two junctions as a similar resistively shunted junction with a much higher critical current. The IV characteristics are obtained by solving the coupled Josephson equations numerically. We find that, for a sufficiently large number of wires, the critical current saturates at a finite value because of the wire inductance, in excellent agreement with experiment. The calculated IV characteristics also show a striking hysteresis, even though each of the individual junctions is {ital nonhysteretic}. The hysteresis results from a global redistribution of current flow on the upper and lower voltage branches, and is also in excellent agreement with experiment. {copyright} {ital 1997} {ital The American Physical Society}

  1. Electromagnetic fields induced by a point source in a uniaxial multiferroic full-space, half-space, and bimaterial space

    E-Print Network [OSTI]

    Pan, Ernie

    Electromagnetic fields induced by a point source in a uniaxial multiferroic full-space, half-space, and bimaterial space X. Wang and E. Pana) Department of Civil Engineering and Department of Applied Mathematics multiferroic full-space, half-space, and bimaterial space. While for the bimaterial space case the interface

  2. The -space Property in Monotonically Normal Spaces and GO-Spaces Harold R. Bennett, Texas Tech University, Lubbock, TX 79409

    E-Print Network [OSTI]

    Lutzer, David J.

    The -space Property in Monotonically Normal Spaces and GO-Spaces by Harold R. Bennett, Texas Tech-8795 Abstract In this paper we examine the role of the -space property (equivalently of the MCM-property) in generalized ordered (GO-)spaces and, more generally, in monotonically normal spaces. We show that a GO-space

  3. National Aeronautics and Space Administration

    E-Print Network [OSTI]

    Christian, Eric

    and Contracting Processes. Developing adequate cost estimates, managing program costs, and ensuring that NASA. · Transitioning from the Space Shuttle to the Next Generation of Space Vehicles. Balancing schedule and resource of the complexity of balancing the human capital, equipment, and property needs of the Space Shuttle Program

  4. Design guidance for play spaces

    E-Print Network [OSTI]

    Design guidance for play spaces March 2006 Lindsey Houston, Roger Worthington, Paddy Harrop #12 Design Process 3 Play Spaces 4 Design Principles 6 Elements of Play 6 Existing Play Structures 8 Contacts, Jason Maclean, Andrew Norris, Bridgette Hall and Tania Crocket in #12;Design guidance for play spaces. 3

  5. Geodesic spaces : momentum Groups : symmetry

    E-Print Network [OSTI]

    Pratt, Vaughan

    Geodesic spaces : momentum :: Groups : symmetry Vaughan Pratt Stanford University BLAST 2010 a · b denoting b rotated 90 degrees about a. End of reprise. 3. This talk; Geodesic spaces At FMCS. as points evenly spaced along a geodesic , right distributivity expresses a symmetry of about an arbitrary

  6. Policies on Japan's Space Industry

    E-Print Network [OSTI]

    as a strategic industry Practical space use in National Security Diplomacy ...etc Policy Administrative Structure on the Basic Space Law legislated in 2008. 1. The government sets space policy as a national strategy utilization environment Develop new markets with small size satellites and rockets Promote the serialization

  7. National Aeronautics and Space Administration

    E-Print Network [OSTI]

    National Aeronautics and Space Administration Launch Services Program Earth's Bridge to Space 2012 roles, getting rockets and satellites ready for flight, on their way, and all the way to orbit absolutely instrumental for the United States to have access to a dependable and secure Earth-to-space bridge

  8. Hyper Space Issue 3

    E-Print Network [OSTI]

    1978-01-01T23:59:59.000Z

    WIMTEft 3 EDITOR'S SPACE 4 PEN PALS 4 COMMUNICATIONS 5 SW IS GAINING 5 BIOS 6SW SERIAL CHAPTFR I 8 STAR WARS PflFM 8 A SONG FOR THF UNBORN 9 PIONFFR SHORT STORY 70WITHINTHFFORHF 70 LOOKING BACK 77 RATTIF EPIC PflFM PART 1 12 BEHIND.... Follow me." Herb led him through the woods. Then he pulled away the branches and debris. When the man saw it his eyebrows went up in surprise. "Oh no, don't tell me we got another ship from Earth. I wish they'd quit sending us their junk." 9 WITHIN...

  9. Space time and rotations

    E-Print Network [OSTI]

    A. Tartaglia

    2002-01-04T23:59:59.000Z

    The paper considers the problem of finding the metric of space time around a rotating, weakly gravitating body. Both external and internal metric tensors are consistently found, together with an appropriate source tensor. All tensors are calculated at the lowest meaningful approximation in a power series. The two physical parameters entering the equations (the mass and the angular momentum per unit mass) are assumed to be such that the mass effects are negligible with respect to the rotation effects. A non zero Riemann tensor is obtained. The order of magnitude of the effects at the laboratory scale is such as to allow for experimental verification of the theory.

  10. European Space Power Conference

    SciTech Connect (OSTI)

    Bents, D.J.; Kohout, L.L.; Mckissock, B.I.; Rodriguez, C.D.; Withrow, C.A.; Colozza, A.; Hanlon, J.C.; Schmitz, P.C.

    1991-01-01T23:59:59.000Z

    To support the Space Exploration Initiative (SEI), a study was performed to investigate power system alternatives for the rover vehicles and servicers that were subsequently generated for each of these rovers and servicers, candidate power sources incorporating various power generation and energy storage technologies were identified. The technologies were those believed most appropriate to the SEI missions, and included solar, electrochemical, and isotope systems. The candidates were characterized with respect to system mass, deployed area, and volume. For each of the missions a preliminary selection was made. Results of this study depict the available power sources in light of mission requirements as they are currently defined.

  11. Earth, Space Sciences

    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 Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCI Home It is the mission of theESnetEarth, Space

  12. Berkeley Lab Space

    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 MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply for a Job ExternalBerkeley Lab | SharesSpace

  13. Characterization of the pentacene thin-film transistors with an epoxy resin-based polymeric gate insulator

    E-Print Network [OSTI]

    Boyer, Edmond

    Characterization of the pentacene thin-film transistors with an epoxy resin-based polymeric gate seeking desirable semi- conductor/insulator combinations [3]. In this study, we adopted an epoxy resin fabricated and characterized. SU-8, a reliable epoxy-based pho- toresist, is tested as a potential highly

  14. Voltage-and calcium-dependent gating of TMEM16A/Ano1 chloride channels are physically

    E-Print Network [OSTI]

    Voltage- and calcium-dependent gating of TMEM16A/Ano1 chloride channels are physically coupled by the first intracellular loop Qinghuan Xiaoa , Kuai Yua , Patricia Perez-Cornejob , Yuanyuan Cuia , Jorge in the first intracellular loop that is crucial for both Ca2+ and voltage sensing. Deleting 448EAVK

  15. IEEE ELECTRON DEVICE LETTERS, VOL. 29, NO. 2, FEBRUARY 2008 183 Externally Assembled Gate-All-Around Carbon

    E-Print Network [OSTI]

    -All-Around Carbon Nanotube Field-Effect Transistor Zhihong Chen, Member, IEEE, Damon Farmer, Sheng Xu, Roy Gordon USA (e-mail: zchen@us.ibm.com; avouris@ us.ibm.com). D. Farmer is with the School of Engineering demonstrate a gate-all-around single- wall carbon nanotube field-effect transistor. This is the first suc

  16. Graduate Automotive Technology Education (GATE) Program: Center of Automotive Technology Excellence in Advanced Hybrid Vehicle Technology at West Virginia University

    SciTech Connect (OSTI)

    Nigle N. Clark

    2006-12-31T23:59:59.000Z

    This report summarizes the technical and educational achievements of the Graduate Automotive Technology Education (GATE) Center at West Virginia University (WVU), which was created to emphasize Advanced Hybrid Vehicle Technology. The Center has supported the graduate studies of 17 students in the Department of Mechanical and Aerospace Engineering and the Lane Department of Computer Science and Electrical Engineering. These students have addressed topics such as hybrid modeling, construction of a hybrid sport utility vehicle (in conjunction with the FutureTruck program), a MEMS-based sensor, on-board data acquisition for hybrid design optimization, linear engine design and engine emissions. Courses have been developed in Hybrid Vehicle Design, Mobile Source Powerplants, Advanced Vehicle Propulsion, Power Electronics for Automotive Applications and Sensors for Automotive Applications, and have been responsible for 396 hours of graduate student coursework. The GATE program also enhanced the WVU participation in the U.S. Department of Energy Student Design Competitions, in particular FutureTruck and Challenge X. The GATE support for hybrid vehicle technology enhanced understanding of hybrid vehicle design and testing at WVU and encouraged the development of a research agenda in heavy-duty hybrid vehicles. As a result, WVU has now completed three programs in hybrid transit bus emissions characterization, and WVU faculty are leading the Transportation Research Board effort to define life cycle costs for hybrid transit buses. Research and enrollment records show that approximately 100 graduate students have benefited substantially from the hybrid vehicle GATE program at WVU.

  17. Test Set Reordering Using the Gate Exhaustive Test Metric Kyoung Youn Cho and Edward J. McCluskey

    E-Print Network [OSTI]

    Stanford University

    Test Set Reordering Using the Gate Exhaustive Test Metric Kyoung Youn Cho and Edward J. Mc kycho@crc.stanford.edu Abstract When a test set size is larger than desired, some patterns must be dropped. This paper presents a systematic method to reduce test set size; the method reorders a test set

  18. IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 27, NO. 9, SEPTEMBER 2012 4153 C Universal Gate Driver Integrated Circuit

    E-Print Network [OSTI]

    Tolbert, Leon M.

    IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 27, NO. 9, SEPTEMBER 2012 4153 A 200 C Universal Gate in extreme environment applica- tions, including automotive, aerospace, geothermal, nuclear, and well logging. For successful realization of such high-temperature power conversion modules, the associated control electronics

  19. The role of oxygen in hydrogen sensing by a platinum-gate silicon carbide gas sensor: An ultrahigh vacuum study

    E-Print Network [OSTI]

    Tobin, Roger G.

    The role of oxygen in hydrogen sensing by a platinum-gate silicon carbide gas sensor: An ultrahigh conditions that elucidate the role of oxygen in the functioning of silicon carbide field-effect gas sensors hydrogen-depleted state; competition between hydrogen oxidation and hydrogen diffusion to metal/ oxide

  20. Abstract--Bias temperature instability, hot-carrier injection, and gate-oxide wearout will cause severe lifetime degradation in

    E-Print Network [OSTI]

    Lipasti, Mikko H.

    Abstract--Bias temperature instability, hot-carrier injection, and gate-oxide wearout will cause mechanisms are bias temperature instability (BTI) [1] and hot-carrier injection (HCI) [2], both of which can is compounded by thermal feedback, since active devices located at die hot spots operate at an elevated

  1. International Conference on Internet Computing. Las Vegas, Nevada, p. 620 626. 23 26 June MONSTERS AT THE GATE

    E-Print Network [OSTI]

    Jansen, James

    , (2) Web agents are searching for a wide variety of information, with 60% of the terms used being: terms exactly as entered by the given user. Data Analysis With these three fields, we located initial June 2003. MONSTERS AT THE GATE: WHEN SOFTBOTS VISIT WEB SEARCH ENGINES Bernard J. Jansen and Amanda S

  2. Design of a scanning gate microscope for mesoscopic electron systems in a cryogen-free dilution refrigerator

    E-Print Network [OSTI]

    Goldhaber-Gordon, David

    for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park report on our design of a scanning gate microscope housed in a cryogen-free dilution refrigera- tor for improved energy resolution for spec- troscopic measurements, as well as for investigating physical effects

  3. 250 IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS, VOL. 4, NO. 4, AUGUST 2010 Digital Microfluidic Logic Gates and Their

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    Microfluidic Logic Gates and Their Application to Built-in Self-Test of Lab-on-Chip Yang Zhao, Student Member for microfluidic lab-on-chip. Robust testing methods are therefore needed to ensure correct results. Previously prone. We present a built-in self-test (BIST) method for digital microfluidic lab-on-chip. This method

  4. Built-in Self-Test and Fault Diagnosis for Lab-on-Chip Using Digital Microfluidic Logic Gates

    E-Print Network [OSTI]

    Chakrabarty, Krishnendu

    Built-in Self-Test and Fault Diagnosis for Lab-on-Chip Using Digital Microfluidic Logic Gates Yang University, Durham, NC 27708, USA Abstract Dependability is an important system attribute for microfluidic are cumbersome and error-prone. We present a built-in self-test (BIST) method for digital microfluidic lab

  5. ANALOG-DECODER EXPERIMENTS WITH SUBTHRESHOLD CMOS SOFT-GATES Matthias Frey, Hans-Andrea Loeliger, Felix Lustenberger

    E-Print Network [OSTI]

    Loeliger, Hans-Andrea

    in a low-cost semi-custom 0.8 µm technology. These soft-gates allow, in particular, the real- ization given in [6] and [7, 8]; see also [9]. Since 1998, much effort has been spent towards turning BiCMOS technology. Winstead et al. [11] have fabricated a decoder of the (8,4,4) Hamming code in 0

  6. Dirac point and transconductance of top-gated graphene field-effect transistors operating at elevated temperature

    SciTech Connect (OSTI)

    Hopf, T.; Vassilevski, K. V., E-mail: k.vasilevskiy@ncl.ac.uk; Escobedo-Cousin, E.; King, P. J.; Wright, N. G.; O'Neill, A. G.; Horsfall, A. B.; Goss, J. P. [School of Electrical and Electronic Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU (United Kingdom); Wells, G. H.; Hunt, M. R. C. [Department of Physics, Durham University, Durham DH1 3LE (United Kingdom)

    2014-10-21T23:59:59.000Z

    Top-gated graphene field-effect transistors (GFETs) have been fabricated using bilayer epitaxial graphene grown on the Si-face of 4H-SiC substrates by thermal decomposition of silicon carbide in high vacuum. Graphene films were characterized by Raman spectroscopy, Atomic Force Microscopy, Scanning Tunnelling Microscopy, and Hall measurements to estimate graphene thickness, morphology, and charge transport properties. A 27?nm thick Al{sub 2}O{sub 3} gate dielectric was grown by atomic layer deposition with an e-beam evaporated Al seed layer. Electrical characterization of the GFETs has been performed at operating temperatures up to 100?°C limited by deterioration of the gate dielectric performance at higher temperatures. Devices displayed stable operation with the gate oxide dielectric strength exceeding 4.5 MV/cm at 100?°C. Significant shifting of the charge neutrality point and an increase of the peak transconductance were observed in the GFETs as the operating temperature was elevated from room temperature to 100?°C.

  7. Assesment of Riverbed Change Due to the Operation of a Series of Gates in a Natural River

    E-Print Network [OSTI]

    Kim, Zooho

    2013-03-13T23:59:59.000Z

    the Mesh .............................................................. 87 Figure 63 Study Area in 2-D Model ......................................................................... 88 viii Figure 64 Comparison of Cross Sections between 1-D... Characteristics from Estuary to Bakje Weir ........................... 123 Figure 88 Temporal Comparison of Hydraulic Characteristics ............................... 125 Figure 89 Mass Change from Sejong Weir to Daechung Dam by Gate Operation . 129...

  8. Role of hydrogen in Ge/HfO2/Al gate stacks subjected to negative bias temperature instability

    E-Print Network [OSTI]

    Misra, Durgamadhab "Durga"

    Role of hydrogen in Ge/HfO2/Al gate stacks subjected to negative bias temperature instability N 2007; published online 17 January 2008 This work investigates the role of hydrogen and nitrogen in a Ge. Virtually unchanged interface state density as a function of NBTI indicates no atomic hydrogen release from

  9. Range Sustainability (VSP) PNWD-SA-7032 1

    E-Print Network [OSTI]

    Range Sustainability (VSP) PNWD-SA-7032 1 PNWD-SA-7032 Range Sustainability Module Using Visual Sample Plan (VSP) Software Range Sustainability ModuleRange Sustainability Module Using Visual Sample Sustainability (VSP) PNWD-SA-7032 2 PNWD-SA-7032 / 2 ObjectiveObjectiveObjective Learn how to use the Range

  10. Noncommutative space-time models

    E-Print Network [OSTI]

    N. A. Gromov; V. V. Kuratov

    2005-07-01T23:59:59.000Z

    The FRT quantum Euclidean spaces $O_q^N$ are formulated in terms of Cartesian generators. The quantum analogs of N-dimensional Cayley-Klein spaces are obtained by contractions and analytical continuations. Noncommutative constant curvature spaces are introduced as a spheres in the quantum Cayley-Klein spaces. For N=5 part of them are interpreted as the noncommutative analogs of (1+3) space-time models. As a result the quantum (anti) de Sitter, Newton, Galilei kinematics with the fundamental length and the fundamental time are suggested.

  11. A New Gated X-Ray Detector for the Orion Laser Facility

    SciTech Connect (OSTI)

    Clark, David D. [Los Alamos National Laboratory; Aragonez, Robert J. [Los Alamos National Laboratory; Archuleta, Thomas N. [Los Alamos National Laboratory; Fatherley, Valerie E. [Los Alamos National Laboratory; Hsu, Albert H. [Los Alamos National Laboratory; Jorgenson, H. J. [Los Alamos National Laboratory; Mares, Danielle [Los Alamos National Laboratory; Oertel, John A. [Los Alamos National Laboratory; Oades, Kevin [Atomic Weapons Establishment; Kemshall, Paul [Atomic Weapons Establishment; Thomas, Philip [Atomic Weapons Establishment; Young, Trevor [Atomic Weapons Establishment; Pederson, Neal [VI Control Systems

    2012-08-08T23:59:59.000Z

    Gated X-Ray Detectors (GXD) are considered the work-horse target diagnostic of the laser based inertial confinement fusion (ICF) program. Recently, Los Alamos National Laboratory (LANL) has constructed three new GXDs for the Orion laser facility at the Atomic Weapons Establishment (AWE) in the United Kingdom. What sets these three new instruments apart from the what has previously been constructed for the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL) is: improvements in detector head microwave transmission lines, solid state embedded hard drive and updated control software, and lighter air box design and other incremental mechanical improvements. In this paper we will present the latest GXD design enhancements and sample calibration data taken on the Trident laser facility at Los Alamos National Laboratory using the newly constructed instruments.

  12. A digital optical phase-locked loop for diode lasers based on field programmable gate array

    SciTech Connect (OSTI)

    Xu Zhouxiang; Zhang Xian; Huang Kaikai; Lu Xuanhui [Physics Department, Zhejiang University, Hangzhou, 310027 (China)

    2012-09-15T23:59:59.000Z

    We have designed and implemented a highly digital optical phase-locked loop (OPLL) for diode lasers in atom interferometry. The three parts of controlling circuit in this OPLL, including phase and frequency detector (PFD), loop filter and proportional integral derivative (PID) controller, are implemented in a single field programmable gate array chip. A structure type compatible with the model MAX9382/MCH12140 is chosen for PFD and pipeline and parallelism technology have been adapted in PID controller. Especially, high speed clock and twisted ring counter have been integrated in the most crucial part, the loop filter. This OPLL has the narrow beat note line width below 1 Hz, residual mean-square phase error of 0.14 rad{sup 2} and transition time of 100 {mu}s under 10 MHz frequency step. A main innovation of this design is the completely digitalization of the whole controlling circuit in OPLL for diode lasers.

  13. Wafer-scale solution-derived molecular gate dielectrics for low-voltage graphene electronics

    SciTech Connect (OSTI)

    Sangwan, Vinod K.; Jariwala, Deep; McMorrow, Julian J.; He, Jianting; Lauhon, Lincoln J. [Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208 (United States); Everaerts, Ken [Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (United States); Grayson, Matthew [Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208 (United States); Marks, Tobin J., E-mail: t-marks@northwestern.edu, E-mail: m-hersam@northwestern.edu; Hersam, Mark C., E-mail: t-marks@northwestern.edu, E-mail: m-hersam@northwestern.edu [Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208 (United States); Department of Chemistry, Northwestern University, Evanston, Illinois 60208 (United States)

    2014-02-24T23:59:59.000Z

    Graphene field-effect transistors are integrated with solution-processed multilayer hybrid organic-inorganic self-assembled nanodielectrics (SANDs). The resulting devices exhibit low-operating voltage (2?V), negligible hysteresis, current saturation with intrinsic gain >1.0 in vacuum (pressure?gate dielectrics. Statistical analysis of the field-effect mobility and residual carrier concentration demonstrate high spatial uniformity of the dielectric interfacial properties and graphene transistor characteristics over full 3 in. wafers. This work thus establishes SANDs as an effective platform for large-area, high-performance graphene electronics.

  14. Nucleotide-induced conformational motions and transmembrane gating dynamics in a bacterial ABC transporter

    E-Print Network [OSTI]

    Flechsig, Holger

    2014-01-01T23:59:59.000Z

    ATP-binding cassette (ABC) transporters are integral membrane proteins that mediate the exchange of diverse substrates across membranes powered by ATP hydrolysis. We report results of coarse-grained dynamical simulations performed for the bacterial heme transporter HmuUV. Based on the nucleotide-free structure, we have constructed a ligand-elastic-network description for this protein and investigated ATP-induced conformational motions in structurally resolved computer experiments. As we found, interactions with nucleotides resulted in generic motions which are functional and robust. Upon binding of ATP-mimicking ligands the structure changed from a conformation in which the nucleotide-binding domains formed an open shape, to a conformation in which they were found in tight contact and the transmembrane domains were rotated. The heme channel was broadened in the ligand-bound complex and the gate to the cytoplasm, which was closed in the nucleotide-free conformation, was rendered open by a mechanism that involv...

  15. Molecular doping for control of gate bias stress in organic thin film transistors

    SciTech Connect (OSTI)

    Hein, Moritz P., E-mail: hein@iapp.de; Lüssem, Björn; Jankowski, Jens; Tietze, Max L.; Riede, Moritz K. [Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden (Germany)] [Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden (Germany); Zakhidov, Alexander A. [Fraunhofer COMEDD, Maria-Reiche-Str. 2, 01109 Dresden (Germany)] [Fraunhofer COMEDD, Maria-Reiche-Str. 2, 01109 Dresden (Germany); Leo, Karl [Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden (Germany) [Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden (Germany); Fraunhofer COMEDD, Maria-Reiche-Str. 2, 01109 Dresden (Germany)

    2014-01-06T23:59:59.000Z

    The key active devices of future organic electronic circuits are organic thin film transistors (OTFTs). Reliability of OTFTs remains one of the most challenging obstacles to be overcome for broad commercial applications. In particular, bias stress was identified as the key instability under operation for numerous OTFT devices and interfaces. Despite a multitude of experimental observations, a comprehensive mechanism describing this behavior is still missing. Furthermore, controlled methods to overcome these instabilities are so far lacking. Here, we present the approach to control and significantly alleviate the bias stress effect by using molecular doping at low concentrations. For pentacene and silicon oxide as gate oxide, we are able to reduce the time constant of degradation by three orders of magnitude. The effect of molecular doping on the bias stress behavior is explained in terms of the shift of Fermi Level and, thus, exponentially reduced proton generation at the pentacene/oxide interface.

  16. Ultrafast control of nuclear spins using only microwave pulses: towards switchable solid-state quantum gates

    E-Print Network [OSTI]

    George Mitrikas; Yiannis Sanakis; Georgios Papavassiliou

    2009-10-13T23:59:59.000Z

    We demonstrate the control of the alpha-proton nuclear spin, I=1/2, coupled to the stable radical CH(COOH)2, S=1/2, in a gamma-irradiated malonic acid single crystal using only microwave pulses. We show that, depending on the state of the electron spin mS=+/-1/2, the nuclear spin can be locked in a desired state or oscillate between mI=+1/2 and mI=-1/2 on the nanosecond time scale. This approach provides a fast and efficient way of controlling nuclear spin qubits and also enables the design of switchable spin-based quantum gates by addressing only the electron spin.

  17. Calibration of a gated flat field spectrometer as a function of x-ray intensity

    SciTech Connect (OSTI)

    Xiong, Gang; Yang, Guohong; Li, Hang; Zhang, Jiyan, E-mail: zhangjiyanzjy@sina.com; Zhao, Yang; Hu, Zhimin; Wei, Minxi; Qing, Bo; Yang, Jiamin; Liu, Shenye; Jiang, Shaoen [Research Center of Laser Fusion, China Academy of Engineering Physics, P. O. Box 919-986, Mianyang 621900 (China)] [Research Center of Laser Fusion, China Academy of Engineering Physics, P. O. Box 919-986, Mianyang 621900 (China)

    2014-04-15T23:59:59.000Z

    We present an experimental determination of the response of a gated flat-field spectrometer at the Shenguang-II laser facility. X-rays were emitted from a target that was heated by laser beams and then were divided into different intensities with a step aluminum filter and collected by a spectrometer. The transmission of the filter was calibrated using the Beijing Synchrotron Radiation Facility. The response characteristics of the spectrometer were determined by comparing the counts recorded by the spectrometer with the relative intensities of the x-rays transmitted through the step aluminum filter. The response characteristics were used to correct the transmission from two shots of an opacity experiment using the same samples. The transmissions from the two shots are consistent with corrections, but discrepant without corrections.

  18. A Strained Organic Field-Effect-Transistor with a Gate-Tunable Superconducting Channel

    E-Print Network [OSTI]

    Hiroshi M. Yamamoto; Masaki Nakano; Masayuki Suda; Yoshihiro Iwasa; Masashi Kawasaki; Reizo Kato

    2013-09-02T23:59:59.000Z

    In state-of-the-art silicon devices, mobility of the carrier is enhanced by the lattice strain from the back substrate. Such an extra control of device performance is significant in realizing high performance computing and should be valid for electric-field-induced superconducting devices, too. However, so far, the carrier density is the sole parameter for field-induced superconducting interfaces. Here we show an active organic superconducting field-effect-transistor whose lattice is modulated by the strain from the substrate. The soft organic lattice allows tuning of the strain by a choice of the back substrate to make an induced superconducting state accessible at low temperature with a paraelectric solid gate. An active three terminal Josephson junction device thus realized is useful both in advanced computing and in elucidating a direct connection between filling-controlled and bandwidth-controlled superconducting phases in correlated materials.

  19. Structure of Noncommutative Fock space

    E-Print Network [OSTI]

    Si-Cong Jing; Qiu-Yu Liu; Tu-Nan Ruan

    2005-05-05T23:59:59.000Z

    The structure of the state-vector space of identical bosons in noncommutative spaces is investigated. To maintain Bose-Einstein statistics the commutation relations of phase space variables should simultaneously include coordinate-coordinate non-commutativity and momentum-momentum non-commutativity, which lead to noncommutative Fock space. By this we mean that creation and annihilation operators corresponding to different degrees of freedom of the bosons do not commute each other. The main character of the noncommutative Fock space is there are no ordinary number representations because of the non-commutativity between different number operators. However, eigenvectors of several pairs of commuting Hermitian operators are obtained which can also be served as bases in this Fock space. As a simple example, an explicit form of two-dimensional canonical coherent state in this noncommutative Fock space is constructed and its properties are discussed.

  20. Mechanisms for plasma etching of HfO{sub 2} gate stacks with Si selectivity and photoresist trimming

    SciTech Connect (OSTI)

    Shoeb, Juline; Kushner, Mark J. [Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011 (United States); Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109-2122 (United States)

    2009-11-15T23:59:59.000Z

    To minimize leakage currents resulting from the thinning of the insulator in the gate stack of field effect transistors, high-dielectric constant (high-k) metal oxides, and HfO{sub 2} in particular, are being implemented as a replacement for SiO{sub 2}. To speed the rate of processing, it is desirable to etch the gate stack (e.g., metal gate, antireflection layers, and dielectric) in a single process while having selectivity to the underlying Si. Plasma etching using Ar/BCl{sub 3}/Cl{sub 2} mixtures effectively etches HfO{sub 2} while having good selectivity to Si. In this article, results from integrated reactor and feature scale modeling of gate-stack etching in Ar/BCl{sub 3}/Cl{sub 2} plasmas, preceded by photoresist trimming in Ar/O{sub 2} plasmas, are discussed. It was found that BCl{sub n} species react with HfO{sub 2}, which under ion impact, form volatile etch products such as B{sub m}OCl{sub n} and HfCl{sub n}. Selectivity to Si is achieved by creating Si-B bonding as a precursor to the deposition of a BCl{sub n} polymer which slows the etch rate relative to HfO{sub 2}. The low ion energies required to achieve this selectivity then challenge one to obtain highly anisotropic profiles in the metal gate portion of the stack. Validation was performed with data from literature. The effect of bias voltage and key reactant probabilities on etch rate, selectivity, and profile are discussed.