Abstract:PARAMETRIC X-RADIATION (PXR) IS PROPOSED AS AN INTENSE, TUNABLE, MONOCHROMATIC HARD-X-RAY SOURCE FOR THE DETECTION OF EXPLOSIVES. THIS RADIATION IS HIGHLY COLLIMATED, HAS A BANDWIDTH OF 0.1, AND AN INTENSITY EQUAL TO THAT OF SYNCHROTRON RADIATION ON A PER ELECTRON BASIS. PXR GENERATION IS ACHIEVED… more
Abstract:ADIABATICS, INC. IS PLEASED TO PROPOSE A RESEARCH PROGRAM TO DEVELOP A NOVEL "COMPACT, MINIMUM NOISE, AUXILIARY POWER UNIT (APU) FOR LIGHTWEIGHT VEHICLES." THE APU USES A COMMERCIAL DIESEL ENGINE AND AN ADVANCED GENERATOR AND NOVEL COOLING TECHNIQUES TO MEET THE STATED REQUIREMENTS. THE KEY… more
Abstract:The initial step to producing a series of interactive HyperCard packages for laboratory instructionwill involve developing a template program based on the Physiology of striated muscle. The flexibilityinherent within the software programs will permit students to learn at their own level. QuickTime… more
Abstract:Avionics flight tests are critical for evaluating weapon systems in operational environments not cost-effectively emulated in flight test. This proposal is for an AATEAS designed to provide the tools necessary to obtain optimal results during avionics testing using established techniques in various… more
Abstract:Adroit Systems, Inc. will develop a Pulse Detonation Synthesis (PDS) process to manufacture ceramic powders from gas-powder reactant mixtures more efficiently and inexpensively than current methods. A high combustion rate and simple design make the PDS system capable of mass producing these powders,… more
Abstract:This proposal addresses the immediate need for models for accurate description of metal matrix composite (MMC) response to multiaxial loadings such as those existing in most turbine engine components. The model is needed for both design and life prediction of engine components. The proposed effort… more
Abstract:Diamondlike multinetwork and network-crystalline atomic-scale composite coatings constitute a new class of materials with unique properties including high adhesion to virtually any substrate (including materials, crystalline and glass dielectrics, plastics), excellant thermal and diffusion barrier… more
Abstract:ADVANCED BATTERIES BASED ON LITHIUM METAL SULFIDE CELL TECHNOLOGY ARE UNDER CONSIDERATION FOR APPLICATIONS SUCH AS THE ELECTRIC VEHICLE,PRIMARILY DUE TO THEIR HIGH ENERGY DENSITY CAPABILITIES. HOWEVER, CURRENTLY AVAILABLE MATERIALS LIMIT THE RELIABILITY OF THIS BATTERY TECHNOLOGY FOR LONG-TERM USE.… more
Abstract:POLYMERIC MATERIALS ARE USED EXTENSIVELY IN A MULTITUDE OF APPLICATIONS DUE TO A UNIQUE BALANCE OF COST AND STRUCTURAL PROPERTIES. HOWEVER, WHERE THERMAL APPLICATIONS ARE CONCERNED, THE UTILIZATION OF POLYMERIC MATERIALS IS EXTREMELY LIMITED DUE TO POOR THERMAL TRANSFER. STRUCTURAL POLYMERS… more
Abstract:THE HIGH TEMPERATURE STRENGTH OF CERAMIC MATERIALS MAKE THEM ATTRACTIVE FOR USE IN HIGH EFFICIENCY COMBUSTION ENGINES. UNFORTUNATELY, THE POOR FRICTION AND WEAR PROPERTIES OF COMMON CERAMICS OFTEN PRECLUDE THEIR USE IN ROTATING AND SLIDING COMPONENTS. SOLID STATE LUBRICANTS ARE A POTENTIAL SOLUTION… more
Abstract:IN ORDER FOR ROBOTIC TECHNOLOGY TO MOVE INTO THE NEXT GENERATION, IT MUST EVOLVE FROM STANDALONE COMPONENT OPERATION TO THE CONCEPT OF TOTALLY INTEGRATED SYSTEMS OF MANY CONCURRENTLY EXECUTING SUBSYSTEMS THAT ARE CONSTANTLY EVOLVING. FURTHER, THIS TECHNOLOGY MUST SUPPORT ADDITIONAL SYSTEM ACTIVITIES… more
Abstract:Silicon carbide promises near-term insertion in high power, high temperature, applications. The wide band-gap and consequent high breakdown field of silicon carbide theoretically allows efficient high power solid state power amplifiers. Its high thermal conductivity will permit compact devices and… more
Abstract:Efficient blue and UV lasers are key to high density optical storage, novel communication systems, industrial and medical lasers, and specialized spectroscopic tools. By virtue of their direct bandgap (ranging from 2.09eV-InN to 3.44eV-GaN to 6.2eV-AlN) and lattice-matched heterostructure system,… more
Abstract:We propose a novel growth technique to produce low defect density GaN substrates - misfit dislocations will be greatly reduced and the defects due to thermal expansion mismatches will be eliminated. In Phase I the feasibility of the technology will be demonstrated. In Phase II, the process will be… more
Abstract:The ability to control large amounts of power (1-150kW) is necessary in applications ranging from aerospace to consumer electronics to industrial power systems and transportation. In order for silicon and gallium arsenide devices to meets such high power densities, tens of devices must be combined… more
Abstract:Future aeropropulsion systems require high temperature electronics and integrated sensors to meet desired performance levels. The wide bandgap of silicon carbide (SiC) makes it ideally suited for high temperature operation. To date, virtually all SiC-based devices have been fabricated using 6H-SiC.… more
Abstract:The demand for higher performance semiconductor devices is pushing the limits of current materials technology. The development of a high dieletric constant capacitor material with 10 - 100 times the charge storage of SiO2 would allow a flat capacitor cell to be used in 256 Mb DRAMs, and simple… more
Abstract:THE DEVELOPMENT OF A DENSE, FAST SUPERCONDUCTING MEMORY TECHNOLOGY WILL FACILITATE THE INTEGRATION OF SUPERCONDUCTING ELECTRONICS INTO SPACE AND ELECTONIC WARFARE SYSTEMS. A SUPERCONDUCTOR BASED MAGNETIC MEMORY TECHNOLOGY IS PROPOSED WHICH CAN BE USED TO FABRICATE MULTIMEGABIT SUPERCONDUCTOR… more
Abstract:THE AVAILABILITY OF EFFICIENT BLUE LIGHT EMITTERS WOULD BREAK OPEN COMMERCIAL AND DEFENSE MARKETS IN FULL COLOR DISPLAYS AND HIGH DENSITY OPTICAL STORAGE SYSTEMS. NITRIDE-BASED DEVICES HAVE THE GREATEST POTENTIAL AS HIGH EFFICIENCY EMITTERS BECAUSE OF THEIR DIRECT BANDGAP AND CONVENIENT… more
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