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REALIZATION OF THE PERFORMANCE ADVANTAGES OF SUPERCONDUCTING DEVICES IN HIGH FREQUENCY COMMUNICATIONS DEPENDS ON DEVELOPMENT OF A LOW TEMPERATURE DEPOSITION PROCESS WITH EXACTING CONTROL OF STOICHIOMETRY AND MORPHOLOGY. MOCVD CAN MEET THESE NEEDS COUPLED WITH EASE OFSCALE-UP. HOWEVER, RECENT WORK AT ADVANCED TECHNOLOGY MATERIALS, INC. SHOWS THAT YBACUO AND BISRCACUO FILMS GROWN BY MOCVD AT TEMPERA ...

PROJECT OBJECTIVES ARE ADVANCING THE FABRICATION AND DESIGN TECHNOLOGY OF IR DETECTORS FROM BULK HGCDTE TO THE EMERGING TECHNOLOGY OF THIN FILMS; MAKING PROGRESS TOWARD FILMS ON SILICON WAFERS; AND IMPLEMENTING THE TECHNIQUE OF PULSED LASER DEPOSITION (PLD) FOR THE FABRICATION OF THESE HETEROEPITAXIAL-COMPOUND, SEMICONDUCTOR IR DETECTORS. PRESENT METHODS OF MATERIAL GROWTH, FROM BULK PROCESSES TO ...

INCREASES IN INFORMATION BANDWIDTH USING COMMUNICATION CHANNELS OF FIXED PHYSICAL BANDWIDTH ARE MADE POSSIBLE BY ELIMINATING REDUNDANT INFORMATION IN THE INFORMATION STREAM USING DATA COMPRESSION-DECOMPRESSION ALGORITHMS. IMAGES--ESPECIALLY MULTISPECTRAL OR COLOR IMAGES--PUT THE GREATEST STRAIN ON COMMUNICATIONS CHANNELS. A VARIETY OF EXISTING TECHNIQUES, OF VARYING MATURITY, MAY BE APPLIED TO THE ...

ONE OF THE MOST IMPORTANT CONTRIBUTIONS TO THE RADIATION EXPOSURE OF PERSONNEL ENGAGED IN SPACE FLIGHT IS THE SIGNIFICANT FLUX OF HIGH ENERGY NEUTRONS ARISING FROM BOTH PRIMARY AND SECONDARY SOURCES OF IONIZING RADIATION. PRESENTLY, THERE DOES NOT EXIST A SUITABLE AND COMPACT NEUTRON SENSOR CAPABLE OF BEING INCORPORATED IN A FLIGHT INSTRUMENT TO PROVIDE HIGH QUALITY, REAL TIME MEASUREMENT OF THIS ...

THE DISCOVERY OF SUPERCONDUCTIVITY AT HIGH TEMPERATURES (90 K) IN COPPER CONTAINING CERAMICS HAS RESULTED IN THE RAPID ACCELERATION OF SUPERCONDUCTOR RESEARCH. MUCH OF THISRESEARCH IS BEING DIRECTED AT PRODUCING AND EXAMINING NEW COMPOUNDS BOTH TO IMPROVE PERFORMANCE CHARACTERISTICS AND TOBETTER UNDERSTAND THE PHENOMENON. REALIZING THE POTENTIAL COMMERCIAL BENEFITS OF THIS NEW DISCOVERY DEPENDS AS ...

A NEW APPROACH TO CLOSED-CYCLE, CRYOGENIC COOLING WILL BE DEVELOPED USING A POLYMER-MEMBRANE-BASED, ELECTROCHEMICALLY DRIVEN CRYOSTAT THAT EMPLOYS OXYGEN AS THE TWO-PHASE WORKING FLUID IN A MODIFIED LINDE-HAMPSON, DOUBLE-EXPANSION CYCLE. THE CYCLE PERMITS THE USE OF ADVANCED MEMBRANES IN AN ELECTROCHEMICAL COMPRESSOR. IMPROVEMENTS IN SIZE AND COST BY A FACTOR LEAST TWO, WITH NO INCREASE IN COEFFIC ...

UNDER THE OVERALL PROGRAM WE WILL DEVELOP AN INNOVATIVE PROGRAMMING ENVIRONMENT TO BE INCORPORATED IN THE NEXT GENERATION OF ADVANCED WELDING ROBOT CONTROLLERS. THIS ENVIRONMENT WILL INCORPORATE MACRO-LEVEL PROGRAMMING, ICONIC USER INTERFACES, GRAPHICAL SIMULATION CAPABILITIES, AND POSSIBLY ELEMENTS OF TASK-LEVEL PROGRAMMING (E.G. AUTOMATIC PATH PLANNING AND WELD SEQUENCE OPTIMIZATION). MACRO-LEVE ...

THIS PROPOSAL DESCRIBES AN SBIR PROJECT TO DESIGN A REMOTE MOISTURE DETECTION SYSTEM TO SUPPORT PLANT GROWTH IN SPACE. THIS SYSTEM CAN BE BUILT INTO AN AUTOMATED IRRIGATION SYSTEM TO MAINTAIN A THIN LAYER OF NUTRIENT SOLUTION ON A SURFACE OCCUPIED BY THE ROOTS AND PLANTS. THESENSOR IS ELECTRICALLY ISOLATED FROM THE ROOT SYSTEM AND IS CONFIGURABLE TO MEASURE THE THICKNESS OF A THIN LAYER ON A SURFA ...

THE PROPOSED PROJECT IS TO DESIGN A MODULAR WRIST TO SUPPORT EVA ARM AND HAND GRASPING. THE WRIST DESIGN WILL BECONSISTENT WITH THE DURABILITY, LOW-BULK, AND HIGH-PERFORMANCE REQUIREMENTS OF WHOLE-ARM MANIPULATION BY ADAPTING MECHANICAL-TRANSMISSION TECHNOLOGIES NEWLY-INVENTED FOR THE WAM DEVELOPMENT AT MIT. IT IS EXPECTED THAT THE RESULTING WRIST DESIGN WILL FEATURE A CABLED DIFFERENTIAL DRIVEN B ...

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