| Spin-Precession Organic Magnetic Sensor |
26 Sep 2012 |
26 pages |
| Authors:
Srini Krishnamurthy; SRI INTERNATIONAL MENLO PARK CA
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 | SRI International, in collaboration with Professor Jing Shih of the University of California- Riverside (UCR), Professor Nathan Newman of Arizona State University (ASU), and Professor Edmond Nowak of the University of Delaware (UD), has been funded (from June 2009 through September 2012) through ONR Contract (N00014-09-C-0292) to fabricate a magnetic sensor with a half-metallic ferromagnet (FM) contact and polymers and demonstrate its sensing capability. In this study we considered La0.7Sr0..3MnO3 ... |
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| Demonstration of Shear Localization in Ultrafine Grained Tungsten Alloys via Powder Metallurgy Processing Route |
Sep 2012 |
36 pages |
| Authors:
Brady Butler; Eric Klier; Daniel Casem; Ajmer Dwivedi; Micah Gallagher; Judy Hays; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
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| Mechanical properties and deformation characteristics are very closely linked to the underlying microstructure of a material. As the grain size of a metal is pushed to ultrafine (1000 nm) and nano (100 nm) length-scales, there is often a fundamental shift in the deformation mechanisms of these materials. In particular, tungsten and tungsten alloys have been shown to deform by shear localization as opposed to stable plastic flow when their grain ... |
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| 0.15-micron Gallium Nitride (GaN) Microwave Integrated Circuit Designs Submitted to TriQuint Semiconductor for Fabrication |
Sep 2012 |
18 pages |
| Authors:
John Penn; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
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| High-speed electronic circuits are needed for Army systems in communications, wireless sensors, imaging, and other systems. Gallium nitride (GaN) technology offers the highest power densities for radio frequency (RF) and wireless integrated circuits. Several GaN broadband high power efficient power amplifier designs for high frequency operation, such as satellite communications (SATCOM), were recently designed and submitted for fabrication using a proprietary 0.15-micrometer GaN process under development at TriQuint Semiconductor. These ... |
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| Novel Laser-Based Technique for Measurements of Primary Atomization Characteristics of Liquid Jets |
22 Aug 2012 |
189 pages |
| Authors:
Yannis Hardalupas; IMPERIAL COLL OF SCIENCE TECHNOLOGY AND MEDICINE LONDON (UNITED KINGDOM)
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| The purpose of the research documented herein is to provide guidelines for the application of a novel optical technique, developed uniquely at Imperial College, London, UK, for measurements of primary atomization characteristics of liquid jets in different atomiser geometries. The novel technique measures the optical connectivity of a liquid jet leaving an atomiser by doping the liquid with a fluorescent dye (or using the natural fluorescence of the liquid) and ... |
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| Cross-Correlation for Automated Stitching of Two-Dimensional Multi-Tile Electron Backscatter Diffraction Data (Preprint) |
Aug 2012 |
34 pages |
| Authors:
J S Tiley; A L Pilchak; P A Shade; D L Ballard; A R Shiveley; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE
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| A method for automatically aligning consecutive datasets of large, two-dimensional multi-tile electron backscatter diffraction (EBSD) scans with high accuracy was developed. The method involves first locating grain and phase boundaries within search regions containing overlapping data in adjacent scan tiles, and subsequently using cross-correlation algorithms to determine the relative position of the individual scan tiles which maximizes the fraction of overlapping boundaries. Savitzky-Golay filtering in two dimensions was used to ... |
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| Reduced-Order Modeling Method for Fatigue Life Prediction of Hybrid Electric Vehicle Batteries |
Aug 2012 |
11 pages |
| Authors:
Sung-Kwon Hong; Bogdan I Epureanu; Matthew P Castanier; MICHIGAN UNIV ANN ARBOR
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| Thin Film Photovoltaic Cells on Flexible Substrates Integrated with Energy Storage |
01 Jul 2012 |
15 pages |
| Authors:
Sr Westgate Charles R; STATE UNIV OF NEW YORK AT BINGHAMTON
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| The goals of the research programs in the Center for Autonomous Solar Power are to conduct research and development in thin film solar cells on flexible substrates for low cost fabrication on roll-to-roll manufacturing. The materials chosen are earth abundant and non-toxic. The expected outcome is very low cost solar cells that will be competitive in performance and well below current market prices in dollars/wall. Flexible solar cells are useful ... |
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| Foundation of a Heterogeneous Electronics Integration Platform |
May 2012 |
26 pages |
| Authors:
Scott Trocchia; Christopher D Meyer; Sarah Bedair; Tony Ivanov; William Benard; Alma Wickenden; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
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| Due to increasing complexity, multi-material incompatibilities, and size constraints of electronics, no single monolithic technology can adequately realize the full spectrum of Army-relevant applications. The integration of a wide range of devices, each fabricated in different technologies and performing a well-defined task, would enable the construction of high performance systems. We use a custom microfabrication process flow to align dies within a silicon template wafer to obtain a common planar ... |
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| Development of Nonuniformities in Swirling, Rocket Injectors |
May 2012 |
14 pages |
| Authors:
Malissa D Lightfoot; Vinod Narayanan; Alan L Kastengren; S A Schumaker; Stephen A Danczyk; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIR
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| A high-performing, stable rocket engine requires injectors which produce predictable, uniform, temporally stable sprays. The use of high-velocity gas to atomize a liquid, such as in an ox-rich engine cycle, can produce complex, unsteady behavior. Two types of unsteady behavior, pulsing and changes in the spray s centerline, were observed in a specific type of prefilming rocket injector a Gas-Centered Swirl Coaxial (GCSC) injector. The reason for this unsteadiness is ... |
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| Spray Statistics and the Impact of Geometry in Gas-Centered Swirl Coaxial Injectors |
May 2012 |
17 pages |
| Authors:
Malissa D Lightfoot; Alan L Kastengren; S A Schumaker; Stephen A Danczyk; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIR
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| Optically dense sprays are often encountered in propulsion applications such as rocket engines. The density of these sprays prevents measurement of droplet diameters and quantitative assessment of spray quality. The lack of quantitative data hinders the development of design criteria and complicates the formation of a fundamental understanding of the impact changes to injector geometry make in an engine's performance. While recent strides have been made in attaining qualitative data ... |
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| Field Emission of Thermally Grown Carbon Nanostructures on Silicon Carbide |
22 Mar 2012 |
182 pages |
| Authors:
Jonathon M Campbell; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
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| CNTs are known to be excellent field emitter due to their unique physical and electrical properties. Because of their semi-metallic nature, CNT do not suffer the thermal runaway found in metallic emitters, and their near one-dimension shape make them an ideal emission sources. CNTs growth by thermal decomposition of silicon carbide does not utilize a catalyst, therefore relatively defect free. One drawback to this method, however is that the CNT ... |
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| Aersol Jet Deposition of Geramic Thin Films for Electromechanical Applications |
Mar 2012 |
26 pages |
| Authors:
Mary Ayyadurai; Thomas Reitz; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH PROPULSION DIRECTORATE
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| A novel direct write printing technology namely, aerosol jet printing (AJP) developed by Optomec Inc., has been exploited using suitable processing methods to deposit dense and porous layer components required for the operation of solid oxide fuel cell (SOFC). The research objective of the program is to develop, based on the capabilities of the deposition system, the necessary processing science to reliably deposit SOFC components to have the desired porosity/density ... |
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| Pulsed Laser Deposition of YBCO With Yttrium Oxide Buffer Layers (Postprint) |
Feb 2012 |
12 pages |
| Authors:
Paul N Barnes; Timothy J Haugan; Nick A Yust; Juliana M Evans; Justin C Tolliver; Rama M Nekkanti; Lyle B Brunke; Iman Maartense; John P Murphy; Srinivas Sathiraju; UES INC DAYTON OH
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| Textured metallic substrate based HTS coated conductors with the YBCO/CeO2/YSZ/CeO2/Ni architecture have already been shown to exhibit high current densities. The CeO2 seed layer can effectively minimize the formation of NiO during the initial deposition on Ni and the CeO2 cap layer provides good lattice matching to the subsequent YBCO layer. However, there are reports of cracks developing in the CeO2 seed layer after a thicker growth due to a ... |
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| Initial Trial using Embedded Fibre Bragg Gratings for Distributed Strain Monitoring in a Shape Adaptive Composite Foil |
Feb 2012 |
26 pages |
| Authors:
Claire Davis; Patrick Norman; James Kopczyk; David Rowlands; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION VICTORIA (AUSTRALIA) AIR VEHICLES DIV
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| This technical note reports on the embedment and testing of a series of distributed optical fibre sensors embedded just beneath the top and bottom surfaces of a shape adapative composite foil. The sensors were monitored during the resin infusion and curing stages of the composite foil fabrication process. The cured foil was tested in a variable pressure water tunnel at different flow rates, angles of attack and tunnel pressures to ... |
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| In-Situ Approach to Introduce Flux Pinning in YBCO (Postprint) |
Feb 2012 |
21 pages |
| Authors:
T J Haugan; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH PROPULSION DIRECTORATE
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| Several in-situ methods to introduce ultra-high densities of defects into YBCO to enhance flux pinning are reviewed, including rare-earth or chemical substitution or additions, and nanoparticle additions by various processing methods. The results were compiled using studies published recently or that are publicly available. Superconducting and microstructural properties are compared for different nanoparticle additions including Y211, Y2O3, CeO2, Sm123, MgO, La211, IrZO3, BaZrO3, and mixed (Y,RE)123 compositions. Results are included ... |
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| Oxidation Resistance, Electrical and Thermal Conductivity, and Spectral Emittance of Fully Dense HfB2 and ZrB2 with SiC, TaSi2, and LaB6 Additives |
26 Jan 2012 |
100 pages |
| Authors:
Robert F Speyer; GEORGIA INST OF TECH ATLANTA SCHOOL OF MATERIALS SCIENCE AND MECHANICAL ENGINEERING
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| The oxidation resistances of ZrB2 containing SiC, TaB2, and TaSi2 additions of various concentrations were studied using isothermal thermogravimetry at 1200, 1400, and 1500 deg C. Theoretically-dense ZrB2-SiC two-phase microstructures were isothermally oxidized for 90 min in a thermogravimetric analyzer in flowing air in the range 1500-1900 deg C. The oxidation resistances of theoretically-dense HfB2-SiC test specimens were evaluated via isothermal thermogravimetry at 1600, 1700 and 1800 deg C. The ... |
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| Growth of Vertically Aligned ZnO Nanowire Arrays Using Bilayered Metal Catalysts |
Jan 2012 |
8 pages |
| Authors:
Hua Qi; Evan R Glaser; Josh D Caldwell; S M Prokes; NAVAL RESEARCH LAB WASHINGTON DC ELECTRONICS SCIENCE AND TECHNOLOGY DIV
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| Vertically aligned, high-density ZnO nanowires (NWs) were grown for the first time on c-plane sapphire using binary alloys of Ni/Au or Cu/Au as the catalyst. The growth was performed under argon gas flow and involved the vapor-liquid-solid (VLS) growth process.We have investigated various ratios of catalyst components for the NWs growth and results indicate that very thin adhesion layers of Ni or Cu deposited prior to the Au layer are ... |
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| BCN Graphene as Efficient Metal-Free Electrocatalyst for the Oxygen Reduction Reaction |
Jan 2012 |
5 pages |
| Authors:
Shuangyin Wang; Lipeng Zhang; Zhenhai Xia; Ajit Roy; Dong W Chang; Jong-Beom Baek; Liming Dai; ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY (KOREA SOUTH)
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| The cathodic oxygen reduction reaction (ORR) is an important process in fuel cells and metal air batteries.[1 3] Although Pt-based electrocatalysts have been commonly used in commercial fuel cells owing to their relatively low overpotential and high current density, they still suffer from serious intermediate tolerance, anode crossover, sluggish kinetics, and poor stability in an electrochemical environment. This, together with the high cost of Pt and its limited nature reserves, ... |
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| Microstructure and Strain Rate Effects on the Mechanical Behavior of Particle Reinforced Epoxy-Based Reactive Materials |
Dec 2011 |
324 pages |
| Authors:
Bradley W White; GEORGIA INST OF TECH ATLANTA SCHOOL OF MATERIALS SCIENCE AND ENGINEERING
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| The effects of reactive metal particles on the microstructure and mechanical properties of epoxy-based composites are investigated in this work. Particle reinforced polymer composites show promise as structural energetic materials that can provide structural strength while simultaneously being capable of releasing large amounts of chemical energy through highly exothermic reactions occurring between the particles and with the matrix. This advanced class of materials is advantageous due to the decreased amount ... |
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| A Miniature Wide Band Atomic Magnetometer |
Dec 2011 |
84 pages |
| Authors:
Mark Prouty; GEOMETRICS INC CAMBRIDGE MA
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| Magnetometers and electromagnetic (EM) devices are two of the most commonly used instruments for searching for UXO. Research in this area has progressed from the problem of detecting possible UXO items to that of discriminating between hazardous and non-hazardous underground objects. Accurate identification of underground items requires that as much information as possible be gathered about the anomaly. This includes taking a dense array of magnetometer readings as well as ... |
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| Taguchi Analysis on the Effect of Process Parameters on Densification During Spark Plasma Sintering of HfB2-20SiC (Preprint) |
Nov 2011 |
13 pages |
| Authors:
Ravi K Enneti; Carmen M Carney; Seong-Jin Park; Sundar V Atre; UES INC DAYTON OH
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| Field assisted sintering (FAST) has emerged as a useful technique to densify ultra high temperature ceramics like HfB2- 20SiC to a high density at relatively low temperatures and shorter times. The effect of various process variables on the densification during spark plasma sintering of HfB2-20SiC was studied using Taguchi analysis. The statistical analysis identified sintering temperature as the most significant parameter affecting the densification of HfB2-20SiC material. A density of ... |
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| Rosiglitazone and Fenofibrate Additive Effects on Lipids |
Oct 2011 |
5 pages |
| Authors:
Admad Slim; Laudino Castillo-Rojas; Eddie Hulten; Jennifer N Slim; Dorette P Moore; Todd C Villines; BROOKE ARMY MEDICAL CENTER FORT SAM HOUSTON TX
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| To evaluate the effect of rosiglitazone, fenofibrate, or their combined use on plasma lipids in normoglycemic healthy adults.Methods and Results. Subjects were randomized in a double-blind fashion to rosiglitazone + placebo, fenofibrate + placebo, rosiglitazone + fenofibrate, or matching double placebo. The between-group difference in the change in fasting TG, high-density lipoprotein cholesterol (HDL-C), LDL-C, and plasma apolipoproteins A-I, A-II, and C-III level were compared after 12 weeks of treatment. ... |
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| Adaptive Hessian-based Non-stationary Gaussian Process Response Surface Method for Probability Density Approximation with Application to Bayesian Solution of Large-scale Inverse Problems |
Oct 2011 |
38 pages |
| Authors:
Tan Bui-Thanh; Omar Ghattas; David Higdon; TEXAS UNIV AT AUSTIN INST FOR COMPUTATIONAL ENGINEERING AND SCIENCES
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| We develop an adaptive Hessian-based non-stationary Gaussian process response surface method to approximate a probability density function (pdf) that exploits its structure, in particular the Hessian of its negative logarithm. Of particular interest to us are pdfs that arise from the Bayesian solution of large-scale inverse problems, which imply very expensive-to-evaluate pdfs. The method can be considered as a piecewise adaptive Gaussian approximation in which a Gaussian tailored to the ... |
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| TCAD Analysis of Heating and Maximum Current Density in Carbon Nanofiber Interconnects |
Sep 2011 |
87 pages |
| Authors:
Jason A Brunton; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
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| As devices shrink, the current density through interconnects increases proportionally making new materials a necessity for industry growth. Carbon nanofiber (CNF) and carbon nanotube's (CNT) potential for high current density make them a possible replacement for metal contacts. Learning the limitations of CNFs and CNTs is important if they are to be used in next-generation electronics. As current density increases, heat is generated throughout the CNF structure. This heating eventually ... |
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| Reduced Toxicity High Performance Monopropellant |
Sep 2011 |
31 pages |
| Authors:
Adam Brand; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIR/SPACE AND MISSILE PROPULSION DIV/PROPELLANTS BRANCH
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| These briefing charts are an overview of reduced toxicity, high performance monopropellant. Performance of hydrazine limits spacecraft payload, range, lifetime and operational response time. The focus is to replace SOTA Hydrazine with monopropellants based on energy dense ionic liquids. |
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| Improved Round Trip Efficiency for Regenerative Fuel Cell Systems |
15 JUL 2011 |
6 pages |
| Authors:
Katherine E. Ayers; PROTON ENERGY SYSTEMS INC WALLINGFORD CT
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| Phase 1 of the project was completed with successful achievement of the go/no go metrics. Additional follow on work is expected for the membrane evaluation but has not yet been exercised. Phase 2 on the regenerative fuel cell system was initiated. Refurbishment of the regenerative fuel cell test stand was initially funded, followed by upgrades to the system later in the quarter. A detailed plan was developed and initiated for ... |
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| Inflammatory Markers and Breast Cancer Risk |
Jul 2011 |
40 pages |
| Authors:
Brenda Diergaarde; PITTSBURGH UNIV PA
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| Mammographic breast density is one of the strongest known risk factors for breast cancer, and a marker of cancer risk for both breasts. Women with dense tissue in more than 75% of the breast have been shown to be at a 4-5 fold increased risk of breast cancer compared to women who have mostly fatty breasts. Greater breast density also affects mammographic sensitivity for breast cancer; mammographic sensitivity declines significantly ... |
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| Use of Mahalanobis Distance for Detecting Outliers and Outlier Clusters in Markedly Non-Normal Data: A Vehicular Traffic Example |
JUN 2011 |
60 pages |
| Authors:
Rik Warren; Robert F. Smith; Anne K. Cybenko; SRA INTERNATIONAL INC DAYTON OH
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| Modeling the behavior of interacting humans in routine but complex activities has many challenges, not the least of which is that humans can be both purposive and negligent, and further can encounter unexpected environmental hazards requiring fast action. The challenge is to characterize and model the humdrum routine while at the same time capturing the deviations and anomalies which arise from time to time. Because of the disruptive impact that ... |
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| Improved Round Trip Efficiency for Regenerative Fuel Cell Systems |
09 MAY 2011 |
16 pages |
| Authors:
Katherine E. Ayers; PROTON ENERGY SYSTEMS INC WALLINGFORD CT
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| The goal of this Office of Naval Research sponsored project is to develop high energy density energy storage systems for unmanned underwater vehicles (UUVs). ONR is interested in regenerative fuel cells for UUV applications due to the capability for high energy storage density vs. batteries. Improved fuel cell and electrolyzer efficiency are desired for higher energy density and faster refueling times. ONR funded the first phase of this effort as ... |
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| Contaminant Mass Transfer During Boiling in Fractured Geologic Media |
Apr 2011 |
120 pages |
| Authors:
Ronald W Falta; Lawrence C Murdoch; CLEMSON UNIV SC
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| The DoD is responsible for cleanup of groundwater that is contaminated with chlorinated volatile organic compounds (CVOC) at thousands of sites. Many of these sites are underlain by fractured rocks or soils with significant matrix porosity. As dissolved CVOC and dense nonaqueous phase liquids (DNAPL) move through fracture networks, the CVOC diffuse into the lower permeability matrix materials, where they can remain for hundreds of years. Remediation options for treating ... |
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| Fundamental Questions About Superconductivity in the Pnictides (Former title: Electromagnetic and Nanostructural Studies of Rare Earth Copper Oxide Grain Boundaries Grain Boundaries in High Temperature Superconductors) |
30 Jun 2010 |
7 pages |
| Authors:
David C Larbalestier; Alex Gurevich; FLORIDA STATE UNIV TALLAHASSEE
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| In early 2008 the Hosono group at Tokyo Institute of Technology discovered high temperature superconductivity in a new extensive family of pnictides based on doped As-Fe. This exciting discovery encouraged us to transition our work on grain boundary studies of YBCO to this new class of superconductors. We showed that they indeed exhibit high critical temperatures Tc, extremely high upper critical fields Hc2, an irreversibility field H* close to Hc2, ... |
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| Nano-Structures and Lasers: Nano-Layers Based Hard X-ray Medical Source and Nanoscale Effects in Laser FS Pulses |
30 Dec 2009 |
8 pages |
| Authors:
Alexander E Kaplan; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
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| An overdense plasma layer irradiated by an intense light can exhibit dramatic nonlinear-optical effects due to a relativistic mass-effect of free electrons: highly-multiple hysteresises of reflection and transition, and emergence of gigantic rogue waves . Those are trapped quasi-soliton field spikes inside the layer, sustained by an incident radiation with a tiny fraction of their peak intensity once they have been excited by orders of magnitude larger pumping. The phenomenon ... |
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| An Affymetrix Microarray Design for Microbial Genotyping |
OCT 2009 |
52 pages |
| Authors:
Barry N. Ford; Doug Bader; Yimin Shei; Cindy Ruttan; David Mah; DEFENCE RESEARCH AND DEVELOPMENT SUFFIELD (ALBERTA)
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| There is an ongoing requirement for development of high-density or multiplex assays for detection or identification of microbes. There is also a need to develop assays or toolsets that can detect or identify microbial threats without prior knowledge of the target microbe(s) in a given sample. Indeed, some samples that contain no culturable material (e.g. viable but non-culturable cells) will nonetheless contain detectable DNA fragments which might be of value ... |
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| Development Status of the Helicon Hall Thruster |
15-Sep-2009 |
9 pages |
| Authors:
Rafael A Martinez; W A Hoskins; Peter Y Peterson; Dean Massey; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
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| The development status of a two-stage Hall thruster, the Helicon Hall Thruster, is presented. The Helicon Hall Thruster combines the efficient ionization mechanism of a helicon source with the favorable plasma acceleration properties of a Hall thruster. Conventional Hall thrusters rely on direct current electron bombardment to ionize the flow in order to generate thrust. Electron bombardment typically results in an ionization cost that can be on the order of ... |
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| Thrust Augmentation in Solid Rocket Motors Using Beamed Microwave Energy |
13-Jul-2009 |
13 pages |
| Authors:
Natalia E Gimelshein; Sergey F Gimelshein; Andrew Ketsdever; ENGINEERING RESEARCH AND CONSULTING INC (ERC INC) EDWARDS AFB CA
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| Feasibility of using beamed microwave energy to increase thrust of solid rocket motors during launch is analyzed. Coupling of microwave radiation with internal energies of micron-sized alumina particles and the successive transfer of internal energy of particles to thermal and then kinetic energy of gas is expected to be the main mechanism of thrust increase. A two-phase two-way coupled capability has been developed. For the gas phase, the capability applies ... |
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| Replicating Physiological Patterns of Activity with Prosthetic Stimulation |
Jul-2009 |
30 pages |
| Authors:
Shelley Fried; BOSTON VA RESEARCH INST MA
|
| We want to develop more effective methods of neural stimulation in order to improve the clinical outcomes associated with retinal prosthetics. To accomplish this, we are investigating the mechanism(s) by which different types of retinal neurons respond to electric stimulation. Previous studies have shown that ganglion cells, the output cells of the retina, can be activated directly and exclusively with short duration stimulus pulses[1-4]. However, the site of spike initiation ... |
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| Air Force Research Laboratory |
08-Jun-2009 |
36 pages |
| Authors:
Leo Marple; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH
|
| Agenda: * About AFRL * Sample Technology Efforts - Portable, renewable power generation, storage, and distribution to self-self configuring grids; - Low-cost, configurable, multi-purpose micro-satellites; - Low-cost micro-satellite launch platforms; - Long-life, high-density power storage and management; - Precision location and navigation independent of GPS * Summary |
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| Dense Heterogeneous Integration for InP Bi-CMOS Technology |
May 2009 |
7 pages |
| Authors:
Y Royter; P R Patterson; J C Li; K R Elliiott; T Hussain; M F Boag-O'Brien; J R Duvall; M C Montes; D A Hitko; J S Sewell; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH
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| InP Bi-CMOS technology capable of wafer-scale device-level heterogeneous integration (HI) of InP HBTs and CMOS has been developed. With this technology, full simultaneous utilization of III-V device speed and CMOS circuit complexity is possible. Simple ICs and test structures have been fabricated, showing no significant CMOS or HBT degradation and high heterogeneous interconnect yield. The heterogeneously integrated differential amplifiers with record performance and HBTs with fT=400GHz were obtained. Thermal vias ... |
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| Development of Microbial and Enzymatic Fuel Cells for Bio-Inspired Power Sources |
Mar-2009 |
31 pages |
| Authors:
Fatih Dogan; Shelley Minteer; MISSOURI UNIV-ROLLA DEPT OF MATERIALS SCIENCE AND ENGINEERING
|
| This report is based on some of the revolutionary concepts described in the Road Map on Bioinspired Power Systems within the AFRL/RW Campus Challenge II. Development of biofuel cell concepts integrated with fuel regeneration and energy storage capabilities are proposed to create a compact and self sustaining power system. The first part of this work identified a sediment based microbial fuel cell that could power small electronics and maintain electrical ... |
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| Fabrication of Nanolaminates with Ultrathin Nanolayers Using Atomic Layer Deposition: Nucleation & Growth Issues |
Feb-2009 |
36 pages |
| Authors:
Steven M George; COLORADO UNIV AT BOULDER DEPT OF CHEMISTRY AND BIOCHEMISTRY
|
| This AFOSR grant concentrated on the fabrication of nanolaminates with ultrathin nanolayers using atomic layer deposition (ALD) and molecular layer deposition (MLD) techniques. Nanolaminates are multilayered thin film structures with nanometer dimensions and very high interfacial density. These multilayer structures can display novel properties that can be optimized by manipulating the thickness and composition of the individual nanolayers. During this grant, the research examined nucleation and growth issues involved in ... |
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| A Two-Dimensional Deoxyribonucleic Acid (DNA) Matrix Based Biomolecular Computing and Memory Architecture |
Feb-2009 |
25 pages |
| Authors:
Anthony Macula; Russell Deaton; Junghuei Chen; STATE UNIV OF NEW YORK AT ALBANY RESEARCH FOUNDATION
|
| The primary goal of this research was the development of an enabling technology for DNA computing. It focused on the development of two distinct DNA-based nanotechnologies, aqueous computing and DNA arrays. Once merged, these DNA-based nanotechnologies serve as a platform for a hybrid silicon-DNA computing architecture. The aqueous side is where the computing happens and the array side is where the results are preprocessed. The array information passes to an ... |
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| Developments of Finite-Frequency Seismic Theory and Applications to Regional Tomographic Imaging |
31-Jan-2009 |
54 pages |
| Authors:
Yang Shen; Xiaoping Yang; SCIENCE APPLICATIONS INTERNATIONAL CORP (SAIC) ARLINGTON VA
|
| We use banana-doughnut sensitivity kernels of teleseismic body waves to image the crust and mantle beneath eastern Eurasia. We have collected and processed available broadband data from both permanent stations and temporary networks in eastern Eurasia. In southeast Tibet, where a PASSCAL experiment provided a dense station coverage, a detailed study is carried out to obtain high-resolution P- and Svelocity models. A regional P-wave velocity model for eastern Eurasia is ... |
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| Identification and Characterization of Genomic Amplifications in Ovarian Serous Carcinoma |
Jan-2009 |
148 pages |
| Authors:
Tian-Li Wang; JOHNS HOPKINS UNIV BALTIMORE MD SCHOOL OF MEDICINE
|
| The purpose of this proposed study is to apply genome-wide technologies to analyze ovarian cancer genome and transcriptome. We have accomplished all the proposed tasks as stated in the original grant. They include generating digital karyotyping libraries from ovarian carcinomas and perform transcirptome analysis in each amplicon. This effort leads us to identify at least two novel candidate oncogenes, Rsf1 and Notch3, which were up-regulated in both genomic DNA and ... |
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| Miniature Internal Combustion Engine-Generator for High Energy Density Portable Power |
Dec-2008 |
|
| Authors:
Kurt D Annen; David B Stickler; Jim Woodroffe; AERODYNE RESEARCH INC BILLERICA MA
|
 | Miniature internal combustion engine/generators provide high energy density for portable power applications, potentially exceeding 1500 Whr/kg for a 72 hr mission. Operation on JP-8 from cold startup to steady operation has been demonstrated at the 300 W scale. Miniature engine/generators can be acoustically silenced for low noise operation. |
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| A Framework for Integrated Tracking and Discrimination |
Dec-2008 |
5 pages |
| Authors:
Andrew David; David Fiske; DECISIVE ANALYTICS CORP ARLINGTON VA
|
| The Decisive Analytics Corporation (DAC) team describes a framework to fully integrate the tracking and discrimination processes in the Ballistic Missile Defense System (BMDS).The contributions developed under this work center on fully integrating the tracking and discrimination processes in the Ballistic Missile Defense System (BMDS). The current architecture of the BMDS artificially separates the tracking and discrimination algorithms. Each model exists independently with no ability to influence the operation of ... |
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| Nondestructive Evaluation (NDE) of Sintered Silicon Carbide and its Correlation to Microstructure and Mechanical Properties |
Dec-2008 |
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| Authors:
Douglas M Slusark; M V Demirbas; Andrew Portune; Steven Miller; Richard A Haber; Raymond Brennan; William Green; Ernest Chin; James Campbell; RUTGERS - THE STATE UNIV PISCATAWAY NJ
|
| High density is a critical acceptance criterion for armor ceramics. Quantifying the difference in density between what would be considered to be a good or bad region is complicated. As density is reduced from theoretical, does this infer the presence of defects? The minimum acceptable density that ensures favorable ballistic performance is unknown. This question concerns not only the presence of defective regions, which may include pores or inclusions, but ... |
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| Metastable Polymeric Nitrogen From N2H2 Alloys |
Dec-2008 |
9 pages |
| Authors:
Jennifer A Ciezak; Timothy A Jenkins; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
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| Studies of high-density binary mixtures of simple molecular solids have uncovered a new aspect of high pressure chemistry. In contrast 10 the many previous studies on relatively inert mixtures, here we show that high pressures can lead 10 unexpected behavior in reactive compounds. Raman studies were performed on nitrogen and hydrogen binary alloys al room temperature to 83 GPa To pressures of 30 GPa, large vibron deviations from those of ... |
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| Understanding Intentions of Others Reflects Evoked Responses in the Human Mirror Neuron System: Evidence From Combined fMRI and EEG Repetition Suppression |
Dec-2008 |
8 pages |
| Authors:
Raja Parasuraman; Stephanie Ortigue; James C Thompson; Scott T Grafton; INSTITUTE FOR COLLABORATIVE BIOTECHNOLOGIES SANTA BARBARA CA
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| Viewing the behavior of other agents to infer and understand their intents recruits brain regions within the mirror neuron system (MNS), particularly the inferior parietal lobule and inferior frontal gyrus. However, decoding when intention understanding occurs in the human brain remains unclear. Accordingly, and to distinguish MNS involvement from lower level visual scene analysis, we tested repetition suppression effects in 24 healthy male volunteers who performed an intention inference task ... |
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| Foundations of Isomer Physics for Energy Applications |
16-Oct-2008 |
102 pages |
| Authors:
James J Carroll; YOUNGSTOWN STATE UNIV OH
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| Metastable excited nuclear states, isomers, have been of strong interest for decades, with studies motivated by their physical properties and the promise of high-energy-density applications. Much research has concentrated on induced depletion processes as a potential means of controlling the release of energy stored in these isomers. This research comprises a very specialized sub-field of nuclear physics and, as such, has often suffered from a lack of connection with the ... |
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| Molecular and Clinical Predictors of Aggressive Prostate Cancer |
01-Sep-2008 |
28 pages |
| Authors:
Lorelei A Mucci; BRIGHAM AND WOMEN'S HOSPITAL BOSTON MA
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| While prostate cancer is an important cause of cancer mortality, most men diagnosed with early prostate cancer experience an indolent course. We evaluated molecular and clinical predictors to distinguish lethal and indolent prostate cancer. In a related project, we tested the predictive value of a previously identified multigene tumor signature, a 12-gene model. Risk classification based on the 12-gene model predicted development of lethal disease 20 years hence. The best ... |
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