Award Data

Currently vacuum based methods of PVD and CVD are the only processes for forming GaN thin films and coatings. These methods are usually expensive and are not applied in a production friendly manner. An atmospheric deposition technique that inexpensively and easily applies GaN thin or thick films in an environmentally friendly manner is a priority for any number of DOD and commercial applications. ...

Microwave resonators of linear dielectrics for wireless applications have been fabricated in bulk form using conventional ceramic processing in the current commercial market. Machining and fine polishing are frequently required for dimension control and surface finish in addition to the inherent unfeasibility to fabricate miniaturized electronic circuits. It is vital to develop a suitable thin f ...

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The primary goal of Phase I work is to demonstrate the feasibility of synthesizing gallium nitride (GaN) powder. Secondarily, this powder will be used to grow high-purity single crystals of GaN from a liquid GaN phase. This would be accomplished using a proprietary variation of the skull melting technique. Since GaN demonstrates peritectic-type decomposition at atmospheric pressure, the entire sku ...

Drinking water filtration plants nationwide are failing to adequately reduce the public health risk due to exposure to sometimes lethal Cryptosporidium and other microbial particle levels. New regulations also will require reduction of dissolved organic carbon (DOC) to minimize the risk from potentially carcinogenic reaction by-products resulting from disinfection. Particle and DBP precursors ar ...

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The overall objective of the Phase I and Phase II program is to develop a prototype airwake measurement system that offers substantially - improved capability for measuring and developing models of the wind environment for ship-board landing of helicopters. The proposed Phase I study will carry out a survey of airwake data characteristics of various as-sea helicopter landing environments with pri ...

Spectrally and spatially coherent, high pulse energy, tunable mid-IR sources remain elusive. Solid-State and semiconductor lasers do not operate over the 1.5 to 5 micron wavelength range, leaving laser-pumped frequency converters, such as Optical Parametric Oscillators (OPOs), as the most viable technology. Achieving high conversion efficiency and continuous tunability in rugged OPOs has present ...