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SCHMIDT INSTRUMENTS PROPOSES TO DEVELOP A NOVEL TUNABLE PHOTODETECTOR BASED ON A DOUBLE BARRIER PHOTON ASSISTED RESONANT TUNNELING STRUCTURE. THE DEVICE CAN BE FABRICATED FROM A NUMBER OF SEMICONDUCTOR SYSTEMS DEPENDING ON THE DETECTOR CHARACTERISTICS ONE DESIRES. FOR EXAMPLE, A DETECTOR BASED ON THE GAAS/ALGAAS SYSTEM WOULD BE CAPABLE OF DETECTING PHOTONS WITH ENERGIES THROUGHOUT THE INFRARED SPE ...

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Conventional optoelectronic packaging technologies failed to provide low-loss coupling among various optoelectronic devices that are pivotal for BMDO-mission-related tasks. To bridge different effective apertures of various optoelectronic devices are the major bottleneck needs to be overcome. Radiant Research, Inc., proposes a drastically new idea to solve this problem by introducing a mode-matche ...

THE USE OF MICROBORE CAPILLARY COLUMNS FOR GAS CHROMATOGRAPHY PROMISES TO FACILITATE THE DEVELOPMENT OF AN INSTRUMENT CAPABLE OF RESOLVING AS MANY AS 15 COMPONENTS PERSECOND. THUS, MANY ANALYSES COULD BE COMPLETED IN JUST A FEW SECONDS PERMITTING, FOR THE FIRST TIME, REAL-TIME ANALYSIS BY GAS CHROMATOGRAPHY. TO TRANSLATE THIS CONCEPT INTO A PRACTICAL INSTRUMENT, WE SHALL HAVE TO REDESIGN EVERY COM ...

Silicon carbide materials will revolutionize semiconductor devices for military and commercial markets. The material's wide bandgap, high electric field breakdown, high thermal conductivity give SiC capabilities that far exceed those of silicon or gallium arsenide. Despite significant progress in silicon carbide development, fundamental defects--most prominently micropipes--persist. If SiC is to s ...

A DUAL LASER BEAM TECHNIQUE INVOLVING LASER EVAPORATION OF ALIQUID TARGET WILL BE DEVELOPED TO DEPOSIT THIN FILMS OF INDIUM TIN OXIDE (ITO) ON SILICON. ITO IS EXCELLENT FOR USEIN HIGH SPEED ELECTRONIC DEVICES, WHILE SILICON IS AN OPTIMAL SUBSTRATE DUE TO AVAILABILITY OF HIGH PURITY, LOW COST, LARGE AREA WAFERS. ATTEMPTS WILL BE MADE TO UNDERSTAND THE PHYSICS OF LASER EVAPORATION THAT WILL FACILITA ...

SiC has exceptionally high thermal conductivity and low linear expansion coefficient to resist thermal distortion, high elastic modulus to resist pressure and bowing distortion. It is lightweight and wear resistant. It also has excellent corrosion resistance and outstanding load bearing characteristics at elevated temperatures. Its hardness is only surpassed by diamond, CBN and boron carbide. As ...

Liquid rocket engine performance can be dramatically improved by increasing the wall temperatures for operation concurrent with a reduction in the component weight. The bipropellant fuel combustion temperatures are between 3000 "approx" 3500 C. The conventional thrusters and exit nozzles made of niobium alloys have a maximum operating temperature limit of 1600 C. A regenerative cooling technolo ...

In this research, we will investigate and develop a new class of mid-infrared (3-5 pm) diode lasers vVhich was first proposed by the PI. These lasers utilize interband transitions for photon emission in a staircase of Sb-based type-ll quantum wells. In this way, we retain the advantages of cascaded tunneling injection and wavelength tunability, while circumventing the fast phonon scattering loss e ...