| A High Power Solid State Circuit Breaker for Military Hybrid Electric Vehicle Applications |
Aug 2012 |
10 pages |
| Authors:
Bruce Pilvelait; Calman Gold; Mike Marcel; DRS TEST AND ENERGY MANAGEMENT INC HUNTSVILLE AL
|
 | Military vehicle electrical power systems require quickly responding fault protection to prevent mission failure, vehicle damage, or personnel injury. The electromechanical contactors commonly used for HEV protection have slow response and limited cycle life, factors which could result in fuse activation and disabling of the vehicle, presenting a dangerous situation for the soldier. A protection technology not often considered is Solid State Circuit Breakers (SSCB), which have fast response and ... |
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| Cutter Energy Efficient Lighting: Cost Study Report |
May 2012 |
76 pages |
| Authors:
Leonard C Kingsley; Brent A Fike; Vincent A Reubelt; Thomas L Amerson; COAST GUARD NEW LONDON CT RESEARCH AND DEVELOPMENT CENTER
|
| Results of a study evaluating potential energy/cost savings by transitioning to more efficient lighting technologies on U.S. Coast Guard Cutters. Three approaches were used: (1) a review of U.S. Navy ship lighting transition from fluorescent lights to light emitting diodes (LED), (2) lighting surveys on two Coast Guard Cutters, and (3) a Coast Guard LED cost model. The cost model was developed to compare fluorescent lighting with up to four ... |
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| Design and Characterization of a Three-Dimensional Positron Annihilation Spectroscopy System Using a Low-Energy Positron Beam |
22 Mar 2012 |
132 pages |
| Authors:
Stephen M Jimenez; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Previous forays by AFIT into positron research have resulted in the development of a new positron annihilation spectroscopy (PAS) technique and the procurement of a low-energy positron beam system. The primary purpose of this research was to design and build a state-of-the-art PAS laboratory at AFIT capable to address a myriad of DoD solid-state and surface physics questions. The main objectives were to acquire and assemble utilities to operate a ... |
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| Nonlinear Dynamics and Quantum Transport in Small Systems |
22 Feb 2012 |
10 pages |
| Authors:
Ying-Cheng Lai; ARIZONA STATE UNIV TEMPE
|
| MEMS/NEMS are characterized by their small size, low power consumption, and ultra fast speed. There is a growing interest in the fundamental dynamics of MEMS/NEMS and their potential applications including future military systems. To understand and generate various nonlinear dynamical phenomena including chaos in MEMS/NEMS can thus be of great interest from the standpoint of defense. During the project period, we first focused on understanding the dynamical mechanism of intrinsic ... |
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| Limitation of Hot-Carrier Generated Heat Dissipation on the Frequency of Operation and Reliability of Novel Nitride-Based High-Speed HFETs |
18 Jan 2012 |
44 pages |
| Authors:
Arvydas Matulionis; SEMICONDUCTOR PHYSICS INST VILNIUS (LITHUANIA)
|
| The experimental investigation of fluctuations is a source of information on fast and ultrafast processes responsible for HFET performance and damage. A novel fluctuation-based approach, based on hot-electron velocity fluctuations measured at a microwave frequency, is used for prediction of nitride HFET operation and failure. The following statements summarize the main results: (1) The resonance-type dependence of hot-phonon lifetime on 2DEG density is resolved from the electron velocity fluctuations; (2) ... |
|
| Leading Edge. Volume 7, Issue Number 4, 2012 |
Jan 2012 |
103 pages |
| Authors:
NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| The Leading Edge magazine is produced by the Naval Surface Warfare Center, Dahlgren, Virginia. The purpose of the publication is to showcase technical excellence across the Warfare Centers and promote a broader awareness of the breadth and depth of knowledge and support available to the Navy and DoD. In this issue of The Leading Edge magazine, you will trace the rich history of directed-energy work at Dahlgren, gain insight into ... |
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| Full-Scale Self-Emissive Blue and Green Microdisplays Based on GaN Micro-LED Arrays |
Jan 2012 |
9 pages |
| Authors:
J Day; J Li; D Y Lie; C Bradford; J Y Lin; H X Jiang; ARMY COMMUNICATIONS-ELECTRONICS COMMAND FORT BELVOIR VA NIGHT VISION AND ELECTRONIC SENSORS DIRECTORATE
|
| Micro-size light emitting diode (microLED) arrays based on III-nitride semiconductors have emerged as a promising technology for a wide range of applications. If InGaN microLED arrays can be integrated on to Si complementary metal-oxide-semiconductor (CMOS) substrates for active driving, these devices could play crucial roles in ultra-portable products such as next generation pico-projectors, as well as in emerging fields such as biophotonics and optogenetics. Here we present a demonstration of, ... |
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| Wireless Inter-Chip Signal Transmission by Electromagnetic Coupling of Open-Ring Resonators |
12 AUG 2011 |
15 pages |
| Authors:
Yasuo Ohno; Mami Abe; TOKUSHIMA UNIV (JAPAN)
|
| For the measurement of wireless interconnection using open-ring resonator coupling at 60GHz band, photo mask patterns are designed. Also, electromagnetic simulations are carried out. The best transmission performance is estimated that the insertion loss of -1.85dB at 62.5 GHz with the 3dB bandwidth of 6.0GHz. The effect of wax layer for chip bonding is experimentally investigated. |
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| Microstructural Investigation and Evaluation of Mechanical Properties in Friction Stir Welded Joints |
Aug 2011 |
21 pages |
| Authors:
Brian Justusson; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| With involvement of the United States Military in various places in the world, increased improvements in personnel and vehicle protection are needed. Traditionally, armoring techniques have performed well against particular threats; however, a new threat has emerged from improvised explosive devices (IEDs), which has exposed the vulnerability of the undercarriage of the vehicle to explosions. Various solutions have been proposed to combat this problem, such as implementation of a unibody ... |
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| Bio-Mechanical Interfaces for Cell-Based Microsystems |
22 APR 2011 |
18 pages |
| Authors:
Chad Mirkin; Aaron Dinner; Michael Roukes; Anthony Evans; Robert McMeeking; Christopher Chen; Milan Mrksich; CHICAGO UNIV IL
|
| The MURI represents a multidisciplinary program to develop hybrid microsystems that combine mammalian cells as functional components with conventional solid-state materials. Nanomechanical elements provide the interface between the adherent cells and materials, and are designed to transduce biological and mechanical signals at this interface. The first aim of the work has developed an integrated platform for installing mechanical interfaces to cells, including mechanical sensor and actuator arrays, surface chemistries to ... |
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| Nano-Sponge Ionic Liquid-Polymer Composite Electrolytes for Solid-State Lithium Power Sources |
Jan 2010 |
7 pages |
| Authors:
Kang-Shyang Liao; Thomas E Sutto; Enrico Andreoli; Pulickel Ajayan; Karen A McGrady; Seamus A Curran; NAVAL RESEARCH LAB WASHINGTON DC MATERIALS SCIENCE AND TECHNOLOGY DIV
|
| Solid polymer gel electrolytes composed of 75 wt.% of the ionic liquid, 1-nbutyl- 2,3-dimethylimidazolium bis-trifluoromethanesulfonylimide with 1.0M lithium bis-trifluoromethanesulfonylimide and 25 wt.% poly(vinylidenedifluoro-hexafluoropropene) are characterized as the electrolyte/separator in solid-state lithium batteries. The ionic conductivity of these gels ranges from 1.5 to 2.0mScm−1, which is several orders of magnitude more conductive than any of the more commonly used solid polymers, and comparable to the best solid gel electrolytes currently used ... |
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| Model of Laser-Induced Temperature Changes in Solid-State Optical Refrigerators |
Jan 2010 |
10 pages |
| Authors:
W M Patterson; M Sheik-Bahae; R I Epstein; M P Hehlen; NEW MEXICO UNIV ALBUQUERQUE DEPT OF PHYSICS AND ASTRONOMY
|
| We present an efficient and numerically stable method to calculate time-dependent, laser-induced temperature distributions in solids and provide a detailed description of the computational procedure and its implementation. This study combines the two-dimensional heat equation with laser-induced heat generation and temperature-dependent luminescence. The time-dependent optical response of a system is obtained numerically by the Crank Nicolson method. This general model is applied to the specific case of optical refrigeration in ... |
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| MURI Center for Photonic Quantum Information Systems |
16-Oct-2009 |
26 pages |
| Authors:
Paul Kwiat; Jelena Vuckovic; STANFORD UNIV CA
|
| We have continued the development of several photonic quantum technologies: single-photon and entangled-photon sources from quantum dots and parametric down-conversion; solid-state quantum gates based on quantum dots in semiconductors and on NV centers in diamond; quantum memories using optical storage systems; and high-efficiency single-photon detectors, using optimized visible light photon counters, superconducting bolometers, and frequency upconverters (to be able to detect telecommunication wavelengths using superior visible-wavelength detectors). For most of ... |
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| Processing for Highly Efficient AlGaN/GaN Emitters |
09-Sep-2009 |
14 pages |
| Authors:
Ilesanmi Adesida; ILLINOIS UNIV AT URBANA-CHAMAPAIGN
|
| The fabrication of high-quality ohmic contacts on n- and p-type (Al,In)GaN is essential for improving the performance of optoelectronic devices, such as blue light emitting diodes, metal-semiconductor field effect transistors, HEMTs, and laser diodes. In particular, to realize solid-state UV emitters for chembioagent detection and general lighting, the formation of reliable ohmic contact systems for both n- and p-AlGaN with relatively high Al contents are indispensable. In conjunction with efforts ... |
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| Electronics Devices and Materials |
17-Mar-2008 |
21 pages |
| Authors:
Eric Jackson; Connie Kornegay; Justin Lorentzen; Scott Messenger; Milton Rebbert; Jennifer Hite; Paul Marshall; John Neilson; SFA INC CROFTON MD
|
| During the past year, SFA, Inc., has conducted a broad range of research in the Naval Research Laboratory's (NRL) Electronics Science and Technology Division. This research was both theoretical and experimental involving the development of analytical, fabrication, diagnostic and characterization techniques. Several areas were emphasized: solid state electronics, semiconductor materials, biochemical sensors, opto-electronics, and a special emphasis was placed on silicon, III-V compound semiconductors, reliability physics of electronic devices and ... |
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| Determination of the Dynamics, Structure, and Orientation of the Transmembrane Segment of ErbB2 in Model Membranes Using Solid-State NMR Spectroscopy |
MAR 2008 |
9 pages |
| Authors:
Elvis K. Tiburu; BETH ISRAEL DEACONESS MEDICAL CENTER BOSTON MA
|
| The objective of the proposed research was to investigate the structural properties of the transmembrane helix of the ErbB2 receptor utilizing solid-state nuclear magnetic resonance (NMR) spectroscopy and Molecular dynamics (MD) simulations. 15N Solid-state NMR results demonstrated that TM-ErbB2 has a transmembrane helical domain and that the orientation of the transmembrane domain is 24 5 in shorter chain dimyristoylphosphocholine and 11 3 in palmitoyloleoyphosphocholine. The orientation is dictated by the ... |
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| Next Generation Nanotechnology Assembly Fabrication Methods: A Trend Forecast |
JAN 2008 |
46 pages |
| Authors:
Jr Jovene Vincent T.; AIR WAR COLL MAXWELL AFB AL CENTER FOR STRATEGY AND TECHNOLOGY
|
| Today, the continued success of many industries, especially the microelectronics industry, relies upon the ability to fabricate structures with nanometer precision. The efforts toward developing nanometer-scale fabrication methods fall loosely into two fields. One field seeks to extend the current planar, deposit-pattern-etch paradigm used for complementary metal oxide semiconductors (CMOS). This is a top-down approach. The other seeks new techniques to assemble structures without handling individual particles: self-assembly. These techniques ... |
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| Novel Approaches to Quantum Computation Using Solid State Qubits |
31 DEC 2007 |
12 pages |
| Authors:
D. V. Averin; S. Han; K. K. Likharev; J. E. Lukens; V. K. Semenov; STATE UNIV OF NEW YORK AT STONY BROOK
|
| This is a final performance report on a DURINT project, which summarizes its main achievements, including: the design of sophisticated instrumentation for the control and measurements of superconductor flux qubits, the refinement of qubit fabrication technology, the demonstration of coherent operation of qubits both in frequency and time domain, and the design and analysis of new superconductor devices for processing and measurement of quantum information. Despite several challenges still faced ... |
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| Transport Imaging for the Study of Nanowires and Related Nanostructures |
DEC 2007 |
105 pages |
| Authors:
Ang G. Hwee; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The goals of this thesis are to demonstrate the operation of a near-field scanning microscope (NSOM) inside a scanning electron microscope (SEM) to collect spatially resolved luminescence and to image transport on nano-scale structures particularly nanowires. The SEM is used to generate localized charge and the NSOM is used to observe the motion of the excess charge due to diffusion and/or drift via its recombination emission. This will allow direct ... |
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| Solid-State Nuclear Magnetic Resonance Investigations of Microwave Tube Cathode Structure |
30 NOV 2007 |
6 pages |
| Authors:
K. A. Smith; NEW MEXICO UNIV ALBUQUERQUE OFFICE OF RESEARCH SERVICES
|
| The objective of this work was to determine if Solid-State Nuclear Magnetic Resonance (NMR) would be able to determine what chemical or structural changes occur during treatment of carbon fibers by CsI, and during operation of treated cathodes. It was known that CsI treated carbon fibers are superior to either solid CsI or untreated fibers when used as cathodes for high power microwave production. For C-13 NMR, probe background was ... |
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| Losses and Degradation in Nanoscale Frequency Control Resonator |
07-Feb-2007 |
21 pages |
| Authors:
G J Iafrate; A A Kiselev; NORTH CAROLINA STATE UNIV AT RALEIGH RESEARCH ADMINISTRATION AND SPONSORED PROGRAMS SERVICES
|
| The objective is to identify loss and degradation mechanisms relevant to the frequency control resonator performance as the resonator dimensions reduce to the nanodimensional spatial scale. The Department of Army interest in scaling such devices into the nanodimensional region stems from the technical projection that such resonators can operate at frequencies into the low GHz spectral region thus providing a low cost, integratable NEMS solid state device option for frequency ... |
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| Parametric Study of Beta-Endpoint Energy in Direct Energy Converters |
JAN 2007 |
62 pages |
| Authors:
Kara Blaine; Marc Litz; ARMY RESEARCH LAB ADELPHI MD
|
| Several solid-state materials have been identified for potential use as direct-energy-converter (DEC) for isotope-based batteries. Numerical simulations, using a nuclear scattering code (MCNPX), have been performed to determine the electron energy deposited in the material. Two different parametric studies were performed 1) varying Beta-endpoint energy of a spectrum illuminating layers of silicon-carbide (SiC), 2) the other varying the material layers while keeping the Beta-endpoint energy constant. The goal of the ... |
|
| Degradation of Mustard on Moist Sand, Asphalt, and Limestone Using 13C SSMAS NMR |
DEC 2006 |
30 pages |
| Authors:
Carol A. Brevett; Carroll L. Cook; Robert G. Nickol; Kenneth B. Sumpter; Monicia R. Hall; SCIENCE APPLICATIONS INTERNATIONAL CORP ABINGDON MD
|
| The degradation of mustard [bis(2-chloroethyl) sulfide] on moist sand, limestone, and asphalt at 22 degrees C was followed using 13C solid state magic angle spinning (SSMAS) NMR and observed to form the sulfonium ion H-2TG and thiodiglycol within 8 weeks. The initially-formed H-2TG sulfonium ion was observed to decompose to form TDG over a period of 6 months. Mustard did not degrade on ambient sand or limestone for 12 months, ... |
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| Development of High Efficiency, Low-Cost Flexible Dye-Sensitized Solar Cells |
30 AUG 2006 |
49 pages |
| Authors:
Michael Graetzel; Ravi Thampi; SWISS FEDERAL INST OF TECHNOLOGY LAUSANNE (SWITZERLAND)
|
| This research effort focused on development of new flexible solar cells that can be integrated into deployable shelter skins for power generation purpose in remote locations. This report covers activities and results of a research program over a period of two years. The program was targeted at first realizing a molecular photovoltaic cell based on a dye sensitized nanocrystalline semi-conductor film employing a hole conductor, a conducting polymer or a ... |
|
| Atomtronics: Ultracold Atom Analogs of Electronic Devices |
23 JUN 2006 |
13 pages |
| Authors:
B. T. Seaman; M. Kraemer; D. Z. Anderson; M. J. Holland; COLORADO UNIV AT BOULDER DEPT OF PHYSICS
|
| Atomtronics focuses on atom analogs of electronic materials, devices and circuits. A strongly interacting ultracold Bose gas in a lattice potential is analogous to electrons in solid-state crystalline media. As a consequence of the band structure, cold atoms in a lattice can exhibit insulator or conductor properties. P-type and N-type material analogs can be created by introducing impurity sites into the lattice. Current through an atomtronic wire is generated by ... |
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| Low Voltage Electrolytic Capacitor Pulse Forming Inductive Network for Electric Weapons |
JUN 2006 |
63 pages |
| Authors:
Thomas A. Mays; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Electric weapons, such as the railgun, require a pulse power supply capable of providing reliable high-current, high-energy pulses of many megawatts. Pulsed alternators potentially have the same maintenance issues as other motor-generator sets, so a solid-state system would be desirable, but high voltage capacitor systems are not robust enough for the field. We propose here a Low Voltage Electrolytic Capacitor Pulse Forming Inductive Network (LVEC PFIN) which stores power in ... |
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| High-Energy Electron/Solid State Interaction Modeling with MONSEL |
APR 2006 |
2 pages |
| Authors:
V. Katsap; John Villarrubia; TOSHIBA MACHINE AMERICA HOPEWELL JUNCTION NY NUFLARE TECHNOLOGY
|
| In e-beam tools, interactions between high- energy electrons and the solid target result in backscattering, absorption, and transmission. Each of these effects may be critical to tool performance, affecting resolution, image quality, and even high voltage breakdowns. In most cases, common sense and experience suggest using low- Z materials to minimize backscattering. A more quantitative approach uses MONSEL, a software package capable of modeling e-beam interaction with complex multi-component, multi-layered ... |
|
| Characterization of the Field Emission Properties of Carbon Nanotubes Formed on Silicon Carbide Substrates by Surface Decomposition |
MAR 2006 |
180 pages |
| Authors:
Michael C. Pochet; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Dense arrays of vertically aligned carbon nanotubes (CNTs) form on the surface of silicon carbide wafers during high temperature anneals under moderate vacuum conditions. The novelty of this growth method is that the CNTs form without the aid of a metal catalyst, allowing for potentially impurity-free CNTs to form. In this study, CNT films were grown by the surface decomposition of silicon carbide substrates. The associated field emission characteristics were ... |
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| Student Support for Quantum Computing With Single Cooper-Pair Electronics |
19 JAN 2006 |
21 pages |
| Authors:
R. J. Schoelkopf; S. M. Girvin; YALE UNIV NEW HAVEN CT DEPT OF APPLIED PHYSICS
|
| This project supplies support for an additional graduate student on experimental investigation on quantum coherence, entanglement, and quantum computation in a solid-state, electronic realization of quantum bits based on superconducting single-electron devices, namely the single Cooper-pair box. Since these qubits can be microfabricated in large numbers on a single chip, addressed and coherently manipulated electronically, and then entangled with each other, they represent one of the most scalable implementations for ... |
|
| Self-Organizing Batteries |
16 DEC 2005 |
|
| Authors:
Yet-Ming Chiang; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
 | This research aimed to use colloidal self-organization to create complete bipolar electrochemical devices. In this approach, repulsive and attractive surface forces are introduced within device structures to form: nanoscale electrochemical junctions between electronically conductive anodes and cathodes; electronically conductive networks of storage materials particles; and electrical connections to the external circuit via selective attachment of particles to current collectors. Rechargeable lithium batteries were used as a testbed device for this ... |
|
| Aerospace Power Scholarly Research Program. Delivery Order 0011: Single Ionic Conducting Polymer Electrolyte |
DEC 2005 |
19 pages |
| Authors:
Allen Turner; DAYTON UNIV OH RESEARCH INST
|
| This report focuses on the development of a lithium-ion conducting channel as a solid-state electrolyte for rechargeable lithium batteries. Dilithium phthalocyanine (Li2Pc) has been used in this development since it can undergo molecular self-assembly to form the ionically conducting channel. The essential features of the channel are that it is designed such that the anion matrix of the unsaturated macrocycle forms the channel through which the lithium ions move, thus ... |
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| Aerospace Power Scholarly Research Program. Delivery Order 0011: Single Lithium Ion Conducting Polymer Electrolyte |
DEC 2005 |
29 pages |
| Authors:
William A. Feld; WRIGHT STATE UNIV DAYTON OH DEPT OF CHEMISTRY
|
| This report focuses on the development of a lithium-ion conducting channel as a solid-state electrolyte for rechargeable lithium batteries. Dilithium phthalocyanine (Li2Pc) has been used in this development since it can undergo molecular self-assembly to form the ionically conducting channel. The essential features of the channel are that it is designed such that the anion matrix of the unsaturated macrocyc1e forms the channel through which the lithium ions move, thus ... |
|
| Graduate Student Support for Quantum Computing With Superconducting Charge States |
31 AUG 2005 |
49 pages |
| Authors:
Robert J. Schoelkopf; YALE UNIV NEW HAVEN CT
|
| This project supplies support for an additional graduate student, Mr. David Schuster, on experimental investigations on quantum coherence, entanglement, and quantum computation in solid-state, electronic realization of quantum bits based on superconducting single-electron devices, namely the single Cooper-pair box. Mr. Schuster has developed a process for fabrication of Al/AlOx/Al tunnel qubits with integrated transmission line resonators, and used these devices for cavity-QED manipulations and readout of qubits. This work has ... |
|
| The S&T Innovation Conundrum |
AUG 2005 |
73 pages |
| Authors:
Timothy Coffey; Jill Dahlburg; Eli Zimet; NATIONAL DEFENSE UNIV WASHINGTON DC CENTER FOR TECHNOLOGY AND NATIONAL SECURITY POLICY
|
| This study is motivated by the observation that the state of health of the United States S&T enterprise seems to be simultaneously characterized by opposite assessments. On the one hand the enterprise is described as being especially vibrant, showing remarkable progress, a high level of innovation and confronted with great opportunities. At the same time the enterprise is described as showing disturbing trends in its workforce, rate of knowledge generation, ... |
|
| Analysis and Support Initiative for Structural Technology (ASIST). Delivery Order 0045: Adaptive Structures - Based on Energy Design (ASBED) |
AUG 2005 |
23 pages |
| Authors:
Ramana Grandhi; ANTEON CORP DAYTON OH
|
| The research in this study develops an analysis technique for mechanized solid-state actuators. The methodology's strength stems from the fact that it can be applied to a single solid-state actuator or an actuator that is coupled to a compliant mechanism (mechanized). The technique couples the actuator to any compliant mechanism and it takes into account interactions between the mechanized actuator and its load. Thus the methodology can be applied to ... |
|
| A Counterpulsed, Solid-State Opening Switch |
JUN 2005 |
48 pages |
| Authors:
Michael Graham; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Railguns have great potential in military roles; however, they currently lack a fieldable power supply. Recent advances in the state of low voltage power storage devices may enable practical Pulse Forming Inductive Network power supplies to be developed if a suitable current interruption device is developed. A solid-state device in a counterpulsed opening switch configuration is a possible solution. A demonstration counterpulsed solid-state opening switch was constructed and successfully tested. ... |
|
| Studies of Electron-Ion Interactions Using the CRYRING Heavy-Ion Storage Ring Facility |
JUN 2005 |
15 pages |
| Authors:
Mats Larsson; STOCKHOLM UNIV (SWEDEN)
|
| This report results from a contract tasking Stockholm University as follows: CRYRING, a synchrotron/heavy-ion storage ring facility, has proved to be a powerful tool for measurements of branching ratios in recombination of polyatomic molecular ions. However, there are important questions that still need to be addressed for organic ions such as: 1) Is there a mass limit at which fragmentation decreases or even vanishes and most or all of the ... |
|
| Dynamic Deformation Properties of Energetic Composite Materials |
APR 2005 |
164 pages |
| Authors:
J. E. Field; W. G. Proud; C. R. Siviour; S. M. Walley; S. G. Grantham; D. M. Williamson; H. Czerski; CAMBRIDGE UNIV (UNITED KINGDOM)
|
| This final report consists of six chapters: (1) An introduction to the PCS Fracture and Shock Physics Group (PCS FSP) and some preliminary experiments on PBXs (pp. 3-46); (2) The effect of particle size and temperature on the high strain rate properties of an AP/HTPB PBX (pp. 47-55); (3) Developments in Hopkinson bar instrumentation (pp. 56-74); (4) Visits of Clive R. Siviour to Eglin Airforce Base and studies of impact-induced ... |
|
| Quantum Entanglement and Coherence of Electronic States in Nanoscale Devices |
20 FEB 2005 |
9 pages |
| Authors:
ARMY RESEARCH OFFICE RESEARCH TRIANGLE PARK NC
|
| Recently, a consensus has been gradually emerging that solid state nanoscale systems may eventually become the most promising prototypes of the future quantum information devices. In a solid state environment, however, the electron correlations are ubiquitous, and often they can not be neglected by any means. Nevertheless, the continuing studies (including those carried out in the framework of this project) have indicated that, instead of being an annoying nuisance to ... |
|
| Large-Scale Integration of Solid-State Microfluidic Valves With No Moving Parts |
JAN 2005 |
183 pages |
| Authors:
Carlos H. Mastangelo; Yogesh B. Gianchandani; J. M. Frechet; MICHIGAN UNIV ANN ARBOR
|
| This research concerns the development of a new kind of revolutionary design, solid-state microvalves that will permit the realization of complex microfluidic systems with arrays of hundreds of flow-control devices. Microfluidic systems have widespread applications in the implementation of immunological and genetic assays of both commercial and DoD interest. While fluidic capillary microchips made of glass, silicon, and plastic have been realized, their practical use has been so far confined ... |
|
| Thermoelectric, Thermionic and Thermophotovoltaic Energy Conversion |
2005 |
7 pages |
| Authors:
Ali Shakouri; CALIFORNIA UNIV SANTA CRUZ SCHOOL OF ENGINEERING
|
| Key characteristics of thermoelectric, ballistic thermionic and quasi diffusive thermionic energy converters are compared. First, the main assumptions used to derive the linear Boltzmann transport equations for electrons are examined and the possibility that a higher order transport coefficient may become relevant is discussed. In the linear transport regime, there is a fundamental trade off between high Seebeck coefficient and high electrical conductivity for bulk materials and for many multilayer ... |
|
| A Further Comparison of Solid-State Thermionic and Thermoelectric Refrigeration |
2005 |
5 pages |
| Authors:
T. E. Humphrey; M. F. O'Dwyer; A. Shakouri; NEW SOUTH WALES UNIV SYDNEY (AUSTRALIA) SCHOOL OF PHYSICS
|
| We show that the expressions for current and heat current calculated via (the non-linearized) ballistic and diffusive transport formalisms reduce to the same form for solid-state devices one electron mean free path in length. The materials parameters for thermionic and thermoelectric devices are also shown to be equal, rather than differing by a multiplicative constant. We derive a simple transport equation that includes both ballistic and diffusive contributions to the ... |
|
| Solid-State and Vacuum Thermionic Energy Conversion |
2005 |
17 pages |
| Authors:
A. Shakouri; Z. Bian; R. Singh; Y. Zhang; D. Vashaee; T. E. Humphrey; H. Schmidt; J. M. Zide; G. Zeng; J-H. Bahk; CALIFORNIA UNIV SANTA CRUZ SCHOOL OF ENGINEERING
|
| A brief overview of the research activities at the Thermionic Energy Conversion (TEC) Center is given. The goal is to achieve direct thermal to electric energy conversion with >20% efficiency and >1W/cm2 power density at a hot side temperature of 300-650 C. Thermionic emission in both vacuum and solid-state devices is investigated. In the case of solid-state devices, hot electron filtering using heterostructure barriers is used to increase the thermoelectric ... |
|
| Ultra-High Speed Solid-State FTIR Spectroscopy and Applications for Chemical Defense |
DEC 2004 |
9 pages |
| Authors:
Tudor N. Buican; Arthur H. Carrieri; SEMIOTIC ENGINEERING ASSOCIATES LLC ALBUQUERQUE NM
|
| We introduce a new class of FTIR spectrometers capable of acquiring 6x10(exp 4)-1.4x10(exp 5) interferograms (spectra) per second over the spectral range of 1 micrometers - 12 micrometers, with a resolution of 10 /cm (exp-1) or better. The new FTIR technology is based on the use of birefringence interferometers and employs photoelastic modulators (PEMs) as birefringent elements for ultra-high modulation speed. With characteristic data rates of tens of kHz and ... |
|
| All Solid-State Optical Cryocoolers |
30 NOV 2004 |
10 pages |
| Authors:
Mansoor Sheik-Bahae; NEW MEXICO UNIV ALBUQUERQUE DEPT OF PHYSICS AND ASTRONOMY
|
| This is the final report on the research performed under AFOSR grant F4962O-O2-OO59. In conjunction with another AFOSR grant (F49620-02-0057), we undertook a comprehensive research program to address the fundamental issues of optical refrigeration in solids important for the development of practical solid-state cryocoolers. We pursued two main avenues of research: First, we explored new rare-earth-doped glasses and crystals that have improved cooling efficiencies and/or lower operating temperatures. This phase ... |
|
| Tools for Persistent-Current Qubits |
OCT 2004 |
6 pages |
| Authors:
J. E. Mooij; C. Harmans; DELFT UNIV OF TECHNOLOGY (NETHERLANDS)
|
| The project concentrates on the design, fabrication, implementation and operation of solids state quantum logical elements and circuits for the realization of quantum computers. It utilizes qubits based on circulating persistent currents in superconducting loops containing (three) Josephson junctions. This Final Report presents the major achievements obtained during the project, highlighting the progress from the initial spectroscopy and first Rabi results on a single qubit to the most recent finding ... |
|
| A General Purpose Analysis System Based on a Programmable Fluid Processor |
30 SEP 2004 |
104 pages |
| Authors:
Peter R. Gascoyne; M D ANDERSON CANCER CENTER HOUSTON TX
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| The goal of this project was to develop a complete system for droplet chemistry and biowarfare detection applications based on a programmable dielectrophoretic array concept. In this final reporting period design and testing of the 4th and 5th generation SOI chip was completed. A silicon and glass solid-state microfluidics system was designed at M. D. Anderson and successfully fabricated and integrated with the SOI chip at Applied MEMS. Simultaneously, cost ... |
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| Single Electronics |
31 AUG 2004 |
12 pages |
| Authors:
James Lukens; Dmitri Averin; STATE UNIV OF NEW YORK AT STONY BROOK RESEARCH FOUNDATION
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| The focus of this project was the study of the physics of mesoscopic devices, e.g. single electron devices, related to their use in quantum computation. Theoretical work focused on the design of novel qubit and gate structures using Josephson junctions in the regime of charge dynamics, and theory of mesoscopic quantum measurements including quantum-detector properties of solid-state devices, most importantly, SET transistors. The major experimental effort in this project was ... |
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| Fermi Electronics: A Means of Correlating and Canceling Shot Noise From Solid State Devices |
08 JUN 2004 |
48 pages |
| Authors:
Elliot R. Brown; CALIFORNIA UNIV LOS ANGELES
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| This project has developed a formalism for computing the shot noise in resonant- tunneling structures having an arbitrary number of quantum wells. It is based on the electrostatic feedback effect in quantum-well structures and is the first known shot noise formalism that treats the electrostatic and quantum effects in a self-consistent fashion. Simulation results are analyzed and compared to experimental results for an InGaAs/AlAs double-barrier structure, which is the fastest ... |
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| Dynamics of Plasma-Surface Interactions |
11 MAY 2004 |
12 pages |
| Authors:
NOTRE DAME UNIV IN
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| This project explored specific strategies to augment the plasma density surrounding hypersonic vehicles through a novel solid-state device that provides cold-cathode electron ejection. Successive deposition of metallic, insulating, and metallic nanolayers on a glass support formed a metal-insulator- metal(MIM) device. When a voltage bias was applied, the MIM device delivered hot electrons to the metal/vacuum interface from within the solid. These hot electrons have the potential to stimulate nonthermal chemical ... |
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Reports by Keyword(s)
SOLID STATE ELECTRONICS
