Abstract:High speed, low cost optical self routing optical crossbar switches with gigabit data rates are key components in optical communication and routing systems. We propose to fabricate and study a monolithically integrated optical crossbar switch which will be inexpensive and high performance. This… more
Abstract:NONLINEAR OPTICAL MATERIALS ARE REQUIRED FOR A VARIETY OF POTENTIAL AIR FORCE APPLICATIONS INCLUDING OPTICAL SIGNAL PROCESSING (SWITCHES, MODULATORS, AND GUIDED WAVE DEVICES), AND NEW LASER SOURCES (OPTICAL PARAMETRIC OSCILLATORS AND HARMONIC GENERATORS). HOWEVER, PRESENTLY AVAILABLE MATERIALS ARE… more
Abstract:THE NEXT GENERATION OF HIGH POWER, HIGH FREQUENCY ELECTRONIC DEVICE TECHNOLOGY WILL BE BASED ON WIDE BANDGAP SEMICONDUCTOR MATERIALS SUCH AS SIC, GAN AND DIAMOND. OF THESE, SILICON CARBIDE IS THE MOST PROMISING MATERIAL FOR NEAR TERM APPLICATIONS, SINCE ITS PROCESSING SHARES MANY COMMON FEATURES… more
Abstract:HIGH POWER AND HIGH TEMPERATURE ELECTRONIC DEVICES ARE IMPORTANT IN BOTH DEFENSE AND COMMERCIAL SYSTEMS. BETA SILICON CARBIDE IS AN EXCELLENT CANDIDATE SEMICONDUCTOR MATERIAL FOR DEMANDING APPLICATIONS DUE TO ITS HIGH BREAKDOWN VOLTAGE, RELATIVELY LARGE BAND GAP, HIGH THERMAL CONDUCTIVITY AND HIGH… more
Abstract:IN-SITU MONITORING OF CRITICAL MATERIAL PROPERTIES WOULD GREATLY ENHANCE PROCESS CONTROL OF A WIDE VARIETY OF MANUFACTURING TECHNOLOGIES. POSITION SENSITIVE FIBER OPTIC X-RAY SCINTILLATION DETECTORS (PSSD) CAN BE USED TO SIMULTANEOUSLY MEASURE SEVERAL CRITICAL SOLID POLYCRYSTALLINE MATERIAL… more
Abstract:IN-SITU MONITORING OF CRITICAL FILM PROPERTIES WOULD GREATLY ENHANCE PROCESS CONTROL OF THIN FILM COATING TECHNOLOGIES SUCH AS CHEMICAL VAPOR DEPOSITION (CVD) AND PHYSICAL VAPOR DEPOSITION (PVD). ATM, WORKING IN CONJUNCTION WITH PENNSYLVANIA STATE UNIVERSITY, PROPOSES TO INCORPORATE A POSITION… more
Abstract:SEMICONDUCTING DIAMOND HAS MANY NOVEL PROPERTIES, MOST NOTABLY A STABLE NEGATIVE ELECTRON AFFINITY SURFACE. CONDUCTION BAND ELECTRONS ARE READILY EMITTED FROM A NEGATIVE ELECTRON AFFINITY (NEA) MATERIAL BECAUSE THE BULK CONDUCTION BAND LIES ABOVE THE VACUUM LEVEL. IN THE PHASE I PROGRAM WE WILL… more
Abstract:A low-cost, miniaturized Low Light Level (LLL) CCD TV camera system capable of more than 400 TV lines per picture height at an illumination level ranging from moonless starlight (10 E-4 foot candles) is proposed. The electro-optical portion of the system will incorporate an input lens with an… more
Abstract:The performance of guided projectiles fired in smooth-bore Navy guns is progressively degraded by barrel wear: once high temperature propellant gasses start to flow (jet) between the wall of the gun barrel and the body of the projectile, barrel wear is accelerated and propellant efficiency drops off… more
Abstract:Over the past twenty years two-dimensional spatial light modulators (SLM's) have been identified as a critical element in a many applications. While large electro-optic effects can be engineered in composite structures such as multiple quantum-wells or liquid crystals, SLM's based on ceramic… more
Abstract:Electrically tunable optical filters have been identified as a critical element in many applications, including imaging and automated target recognition applications. While large electro-optic effects can be engineered in composite structures such as multiple quantum-wells or liquid crystals, SLMs… more
Abstract:TITANIUM NITRIDE (TiN) IS RAPIDLY BECOMING AN IMPORTANT MATERIAL AS A BARRIER LAYER IN VLSI DRAMs, AS AN ANTIREFLECTION COATING AND AS A "GLUE" LAYER BETWEEN NOBLE METALS AND SILICON DIOXIDE IN BOTH MEMORY AND LOGIC DEVICES. TYPICALLY, THIN FILMS OF TiN ARE DEPOSITED BY PHYSICAL VAPOR DEPOSITION… more
Abstract:High quality thin films of high temperature superconductor (HTSC) materials have been grown by a variety of methods. Independent of the growth method, residual stresses in large area HTSC/dielectric multi-layer films, resulting from both thermal expansion and lattice mismatch, continue to be a… more
Abstract:The objective of this project is to use the newest advance in the technology of Ferroelctric Liquid Crystal (FLC) displays so that they can be used for Visual Landing Aids as well as other applications. Currently FLC's suffer from serious mechanical and temperature limitations due to the fact that… more
Abstract:Kinetic energy penetrators are currently relied upon as a way to defeat enemy armor. Historically these penetrators have been composed of unanium or tungsten based alloys due to their high densities. In addition to density, the deformation behavior of the alloy determines it's performance. A… more
Abstract:THE UNIQUE PROPERTIES OF SSEMICONDUCTING DIAMOND MAY BE EXPLOITED TO CREATE A NOVEL, HIGH GAIN, LOW NOISE, STABLE, AND COMPACT PHOTOMULTIPLER (PMT). EXISTING PMTS ARE INADEQUATE FOR MANY APPLICATIONS WHERE SENSITIVITY AND GAIN MUST BE COMBINED WITH STABILITY AND REDUCED NOISE REQUIREMENTS. A NOVEL… more
Abstract:FERROELECTRICS SHOW GREAT PROMISE AS ELECTRONIC MATERIALS IN APPLICATIONS RANGING FROM INFRARED DETECTORS TO OPTICAL SWITCHES. BRIUM TITANATE (BATIO3) IS AN ESPECIALLY PROMISING MATERIAL FOR THIN FILM CAPACITOR APPLICATIONS IN ULTRA-LARGE SCALE INTEGRATED CIRCUITS. CONVENTIONAL CHEMICAL VAPOR… more
Abstract:TITANIUM NITRIDE (TIN) IS BECOMING AN IMPORTANT MATERIAL AS A BARRIER LAYER IN VLSI DRAMS, AS AN ANTIREFLECTION COATING AND AS A "GLUE" LAYER BETWEEN NOBLE METALS AND SILICON DIOXIDE IN BOTH MEMORY AND LOGIC DEVICES. THIN FILMS OF TIN ARE DEPOSITED BY PHYSICAL VAPOR DEPOSITION METHODS, BUT AS DEVICE… more
Abstract:SPUTTER COATING IS A WIDELY USED COMMERCIAL TECHNIQUE FOR PRODUCING THIN FILM COATINGS. IN-SITU MONITORING OF CRITICAL THIN FILM PROPERTISE WOULD GREATLY ENHANCE PROCESS CONTROL IN A VARIETY OF SPUTTER COATING PROCESSES. TRADITIONAL 0/20 SCANNING X-RAY DIFFRACTOMETERS ARE POWERFUL ANALYSIS TOOLS… more
Abstract:The objective of this project is to develop a system for the optimized viewing of medical x-ray film. Illuminators currently used to view radiographs have a fixed-area, spatially uniform light output. This allows extraneous light to degrade visual performance and limits the viewable film density… more
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