Award Data

OF THE OVER 600,000 HIGHWAY BRIDGES AND APPROXIMATELY 100,000 RAILROAD BRIDGES IN THE U.S., MANY ARE DIFFICULT TO INSPECT BECAUSE OF LIMITED ACCESSIBILITY. REMOTE INSPECTIONBY UNMANNED AERIAL VEHICLES MAY PROVIDE A SOLUTION TO THIS PROBLEM, BUT INVOLVES CONSIDERATIONS OF VEHICLE SUITABILITY (HELICOPTER, BLIMP DUCTED FAN VEHICLE), THE BRIDGE LOCAL ATMOSPHERIC ENVIRONMENT, AND THE TYPE OF CONTROL (R ...

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NEW MATERIALS ARE BEING DEVELOPED EVERYDAY AND ARE REVOLUTIONIZING PRODUCTS AND PROCESSES AT AN ASTOUNDING RATE. IN RECENT YEARS, THE ROADSIDE SAFETY APPURTENANCE FIELD HAS BEEN AFFECTED AS WELL, AS NEW MATERIALS HAVE BEEN APPLIED TO PRODUCE IMPROVED DESIGNS IN A VARIETY OF SITUATIONS. IN RECENT YEARS PLASTICS, CERAMICS, HIGH STRENGTH FIBERS AND COMPOSITES HAVE BECOME MORE WIDELY USED IN INDUSTRY ...

LOW GROWTH TEMPERATURES ARE ESSENTIAL FOR THE METAL-ORGANIC CHEMICAL VAPOR DEPOSITION (MOCVD) OF ABRUPT HETEROJUNCTION DEVICES FABRICATED FROM MERCURY CADMIUM TELLURIDE. UNSYMMETRICAL TELLURIDES (RTER< >1D) REPRESENT A NOVEL ALTERNATIVE TO THE NON-OPTIMAL SOURCE REAGENTS CURRENTLY IN USE. THESE UNSYMMETRICAL TELLURIDES WILL HAVE INCREASED VOLATILITY WHILE MAINTAINING LABILE TELLURIUM-CARBON BONDS ...

THE KEY TO THE COMMERCIAL PRODUCTION OF DEVICES FABRICATED FROM SUPERCONDUCTORING THIN FILMS WITH OPTIMAL AND REPRODUCIBLE PROPERTIES IS THE IDENTIFICATION OF A PROCESS THAT HAS EXACT CONTROL OF STOICHIOMETRY AND MORPHOLOGY. THIS CONTROL CAN ONLY BE ACHIEVED WITH A THOROUGH UNDERSTANDING OF THE CHEMISTRY AT THE SUPERCONDUCTOR-SUBSTRATE INTERFACE WHICH SERVES AS THE TEMPLATE FOR THE GROWING FILM. T ...

THE REPRODUCIBLE CRYSTAL GROWTH OF THIN FILMS WITH THE CORRECT STOICHIOMETRY AND APPROPRIATE MORPHOLOGY IS THE KEY TO THE COMMERCIALIZATION OF DEVICES INCORPORATING THIN FILM HIGH TEMPERATURE SUPERCONDUCTORS. MOCVD HAS THE POTENTIAL TO MEET THESE NEEDS COUPLED WITH RELATIVE EASE OF SCALING TOMANUFACTURING VOLUMES. HOWEVER, RECENT WORK ON MOCVD HAS BEEN PLAGUED BY TWO MAJOR LIMITATIONS: (1.) FILMS ...

ULTRAFAST SOLID STATE PHOTOCONDUCTIVE SWITCHES MAY NOW MAKE POSSIBLE PULSED ELECTRIC FIELDS ON THE ORDER OF 1GV/M ON TIME SCALES OF 1-100 PICOSECONDS. VOLTAGE GRADIENTS OF THISMAGNITUDE ARE BECOMING POSSIBLE THROUGH ADVANCES IN TRANSMISSION LINE DESIGN AND ULTRAFAST PHOTOCONDUCTIVE POWERSWITCHING TECHNOLOGY AND WILL PERMIT SIGNIFICANT ADVANCES INPRODUCING HIGHER ENERGY, COMPACT LINEAR ACCELERATORS ...

WE PROPOSE TO DEVELOP NOVEL INORGANIC SCINTILLATING FIBERS FOR USE IN IONIZING RADIATION IMAGING DETECTORS FOR RESEARCH, MEDICINE AND INDUSTRY, ESPECIALLY IN APPARATUS FORIMAGING X-RAYS, BETA AND ALPHA PARTICLES. IN PHASE I WE WILL USE METAL-ORGANIC CHEMICAL VAPOR DEPOSITION TECHNOLOGY TO COAT DISCRETE LENGTHS OF MECHANICALLY ROBUST QUARTZ OPTICAL FIBERS (SUBSTRATES) WITH THIN FILMS OF INORGANIC C ...

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