Award Data

ABSTRACT: This Phase I SBIR will produce a concept, and algorithms, for a Sensor Suite which can be used as a research tool to characterize strong atmospheric turbulence. Previous and on-going theories, statistics, and empirical data will be evaluated to arrive at an optimal Sensor design concept. That Sensor may exploit the superior resolution and performance inherent in the Radio-Hydro-Physi ...

The overall objective of the proposed effort is to develop an improved ultrasonic consolidation process for metal matrix composites (MMCs). This will be done through the development and validation of multiscale models of the bonding process and the laminated structures produced. These models will facilitate the optimization of the in-coming material, the structural performance of the processed m ...

Currently nuclear-based gauges are the most widely used equipment in the construction industry to measure moisture and density of pavement materials. Such measurements are very accurate, rapid, and non-destructive. Attempts to replace these nuclear methods by non-nuclear methods have shown strong limitations. For this project, we propose to integrate nuclear and seismic technologies to measure t ...

We plan to implement a planar Molecularly Controlled Semiconductor Resistor (MOCSER) gas sensor on both InAs and InN platforms for the ppt-ppm detection of NOx and H2O. Kyma Technologies and Duke University will leverage Duke"s leading MOCSER based NOx sensor technology which uses surface functionalization of InAs with hemin (chloroprotoporphyrin IX iron(III)) to create a strong affinity for NOx. ...

Aluminum Gallium Nitride (AlGaN) has broad dual use applications for power transistors, high frequency transistors, high power Schottky barrier diodes, and solar-blind detectors, as well as ultra-violet laser diodes and ultra-violet light emitting diodes. This unique material system spans the capabilities that lie between Gallium Nitride (GaN) and Aluminum Nitride (AlN), enabling custom tailored p ...

The United States Navy has identified the need to investigate the use of auxetic fabric for military personnel protective clothing including jackets, shirts, pants, helmets, boots, gloves, and even body armor. Auxetic fabric technology has a unique feature in that it exhibits a negative Poisson"s ratio effect when subjected to an axial load. Auxetic fabric consists of an elastomeric core yarn, whi ...

The overall objective of this program is to improve the producibility of HVPE GaN through the use of in-situ monitoring during the growth process. Various in-situ monitoring devices will be used: a UV absorption technique to monitor the GaCl concentration above the growing GaN wafer; a commercial BandiT system capable of measuring optical emission from the growing wafer in order to measure the su ...

The objective of proposed work is to demonstrate the feasibility of obtaining AlGaN films of any composition with dislocation densities below 1x106 cm-2 on native nitride substrates either by sustaining a pseudomorphic state or by reducing the number of threading dislocations by specific stress relieving schemes at the interfaces or within the thickness of the layers.

Accelerators used for nuclear-physics research require megawatts of radio-frequency energy. They currently employ vacuum-tube power amplifiers or conventional solid-state amplifiers that are inefficient and therefore consume a great deal of prime power. Many other applications including semiconductor processing, cellular-telephone base station transmitters and military communication systems simila ...

Accelerators used for nuclear-physics research require megawatts of radio-frequency energy. They currently employ vacuum-tube power amplifiers or conventional solid-state amplifiers that areinefficient and therefore consume a great deal of prime power. Many other applications including semiconductor processing, cellular-telephone base station transmitters and military communication systems similar ...