Award Data

This Phase I project has two primary objectives. The first objective is to evaluate the feasibility of a fully ion implanted fabrication process based on the heterodimensional 2-D MESFET. The new device, the 2-D JFET, will have p+ ion implanted sidegates which laterally modulate a thin, highly doped n-type conducting channel. The 2-D JFET should have excellent high speed, low power characteristics ...

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This Small Business Innovative Research Phase I project seeks to combine the enhanced piezoelectric properties of single crystal perovskite ferroelectrics, recently discovered at Pennsylvania State University, with the electrostrictive properties of polyurethane to make a new class of "smart" materials for acoustic transducers. A tape casting process is used to form composite sheets compromising ...

The use of UV LEDs for creating visible light by exciting commercially available phosphors will be explored. LEDs based on the (InAlGa)N materials system, now currently used to produce high brightness blue and green LEDs, will be developed to emit efficiently at UV wavelengths corresponding to the excitation bands of various phosphors. By using UV emission from LEDs to excite standard phosphors to ...

Silicon carbide (SiC) is an attractive material for use in high power and high temperature devices. Currently, there are significant challenges for the growth of large area epitaxial films of SiC. We are proposing to develop novel growth systems and growth processes for the large area growth of SiC. In our approach, we will increase the uniformity of Si/C ratios and temperature at the growth inter ...

For many miltary applications, normal photoconductors and junction photodiodes are not sufficiently sensitive for detection of low incident light levels, therefore photodetector devices with optical gain are required. Large gains can be obtained in avalanche photodiodes (APD) with both low noise and large bandwidth. It is proposed to develop innovative AlGaN/GaN based APDs. In order to achieve the ...

The contractor proposes a new approach to underwater imaging that directly converts a two-dimmensional acoustic pressure wave into an electronic requirements fo convential piezo-element arrays. The imager relies on the piezo-birefringent properties of a nematic liquid crystal panel that serves as both sensor and display. The capability of nematic liquid crystals has been established and publishe ...

The objective of the proposed program is to address the high service costs of the current U.S. Navy fleet of aircraft by developing a distributed optical fiber sensor system that will help reduce the costs associated with corrosion damage and extend the lifetime of existing aircraft. Annual corrosion of Navy metallic structures has been estimated as high as $1 billion. Additional costs aris ...

Novel ionic self-assembled monolayer (ISAM) processes for the fabrication of advanced electronic materials and devices will be developed through this program. Revolutionary ISAM methods to create nanostructured multi-layer inorganic/organic thin-films offer major advantages over conventional manufacturing processes, since the process is simple, low-cost and environmentally friendly in that no vola ...

F&S and Virginia Tech will cooperatively develop high performance protective ionic self-assembled monolayer (ISAM) organic/inorganic coatings for space-based optical and structural components, and work with Litton to upscale practical coating manufacturing. Revolutionary ISAM methods of creating multi-layer protective nanopartwcle films offer major advantages over con-ventional coating processes, ...