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METALORGANIC MOLECULAR BEAM EPITAXY (MOMBE) IS A SEMICONDUCTOR GROWTH TECHNIQUE THAT HAS THE POTENTIAL FOR COMBINING THE BEST FEATURES OF MOLECULAR BEAM EPITAXY WITH THOSE OF ORGANOMETALLIC VAPOR PHASE EPITAXY (OMVPE). A MAJOR PROBLEM HINDERING DEVELOPMENT OF MOMBE TECHNIQUES FOR GROWING GROUP III/V SEMICONDUCTORS IS THE AVAILABILITY OF APPROPRIATELY DESIGNED SOURCE REAGENTS THAT PERMIT EFFICIENT ...

FERROELECTRIC MATERIALS SUCH AS BARIUM TITANIUM OXID (BARIO3) HAVE ELECTRO-OPTIC COEFFICIENTS THAT ARE AN ORDER OF MAGNITUDE GREATER THAN THAT OF THE MORE COMMON LITHIUM NIOBIUM OXIDE (LINBO3). THEIR SUPERIOR POTENTIAL HAS NOT BEEN EXPLOITED BECAUSE THE ROUTINE GROWTH OF LARGE DEFECT-FREE OPTICAL QUALITY CRYSTALS HAS NOT BEEN ACHIEVED. IN THIS INVESTIGATION, PLANAR WAVEGUIDES ARE BEING FABRICATED ...

OVER THE PAST DECADE STUDIES HAVE INDICATED THAT IT IS POSSIBLE TO UTILIZE THE ULTRAFAST (PICOSECOND) RESPONSE TIMEOF A PHOTOCONDUCTOR TO DETECT AND TIME RESOLVE THE RAPID VARIATIONS OF LIGHT FROM A RAPIDLY CHANGING SOURCE SUCH AS APULSED LASER, A LASER FUSION EXPERIMENT, A DIRECTED ENERGY WEAPON OR A NUCLEAR WEAPONS EXPLOSION. IN ADDITION TO THE RAPID TEMPORAL EVOLUTION OF THE LIGHT OUTPUT FROM S ...

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A RENEWED INTEREST IN THE APPLICATIONS OF SUPERCONDUCTIVITY HAS RESULTED FROM THE RECENT DISCOVERY OF PEROVSKITE-LIKE COPPER-OXIDE SUPERCONDUCTORS WITH TRANSITION TEMPERATURES ABOVE LIQUID NITROGEN TEMPERATURES. ALTHOUGH THE THIN FILMS AS DEPOSITED GENERALLY HAVE THE APPROPRIATE Y:BA:CU STOICHIOMETRY, A SUBSEQUENT HIGH TEMPERATURE (T>900 DEGREE CELCIUS) OXYGEN TREATMENT IS REQUIRED TO ACHIEVE THE ...

RECENT ADVANCES IN THE AREA OF SEMICONDUCTING POLYMERS HAVE MADE AVAILABLE A NEW CLASS OF MATERIALS WHICH HAVE CONDUCTIVITIES IN THE PROPER RANGE FOR SYNAPTIC CONNECTIONS FOR NEURAL NETWORKS. THIS STUDY WILL INVESTIGATE THIS TECHNOLOGY IN FOUR TASKS: DETERMINATION OF SPIN-COATING PARAMETERS, MEASUREMENT OF ELECTRICAL PROPERTIES, EVALUATIONOF STABILITY AND REPRODUCIBILITY, AND FABRICATION AND TESTI ...

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ACOUSTO-OPTIC (AO) BRAGG CELLS OFFER THE ADVANTAGES OF RELATIVELY LOW POWER CONSUMPTION AND THE ABILITY TO PRODUCE MULTIPLE OUTPUT OPTICAL BEAMS OF VARYING INTENSITY FOR ONE BEAM ENTERING THE SYSTEM. THE MAJOR DISADVANTAGE OF THEAO DEVICE IS ITS ACOUSTIC WAVEFORM PROPAGATION DELAY, WHICH SETS A FUNDAMENTAL LIMIT ON DEVICE SPEED. ELECTRO-OPTIC (EO) DEVICES, ON THE OTHER HAND, OFFER AN ORDER OF MAGN ...

ONE APPROACH TO COMMANDING KINETIC ENERGY PROJECTILES IS TO GUIDE THE PROJECTILE TO THE TARGET VICINITY BY A CODED LASER BEAM. A RELATIVELY NARROW FIELD-OF-VIEW STRAPPED-DOWN SEEKER THEN ACQUIRES THE TARGET ANDCLOSES IN FOR THE KILL. A LIGHTWEIGHT, ELECTROMAGNETIC INTERFERENCE (EMI)/NUCLEAR INSENSITIVE, ULTRA-RUGGED, NO-MOVING PARTS, NONELECTRONIC, FLUIDIC ELECTRO-OPTICAL ENERGY CONVERSION DEVICE ...