Award Data

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One of the most interesting aspects of the new carbon allotropes, the fullerenes, is their versatile electronic properties, which range from insulating to superconducting depending on the type and level of admixtured elements. The record fulleride transition temperatures have been steadily rising and is 45K at this writing. Fullerenes even have advantages over the ceramic superconductors because o ...

This Small Business Innovation Research Phase I program proposes the development of a high thermal conductivity (470-550 W/mK), low coefficient of thermal expansion (5-8 ppm/K), and low weight (2.9-4.3 g/cc) Cu based metal matrix composite material to produce high performance substrates for microelectronics packaging. The proposed MMC system uses copper as the continuous metal matrix and cubic bor ...

Solid-state electronic devices are often subjected to high voltage transients generated by switching, lightning, or electrostatic discharge. These transients can cause mission critical components to fail. Varistors are increasingly used to avoid such failures. The current varistor devices, however, are not well suited for high frequency applications and the increasing trend towards device miniatur ...

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Diamond has recently emerged as a promising material for electron field emission due to its unsurpassed properties of low voltage and room temperature operation, operation robustness, simple design, and reproducibility. However, the present diamond cathodes, which are microcrystalline diamond thin films deposited on macro-substrate (mm to cm size ) suffer a few drawbacks. Only 1-10% or less of the ...

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Currently manufactured aerospace composites absorb water vapor to varying degrees. This moisture absorption adds weight to the composite, however, it lowers the glass transition temperature. And, subsequently, the ultimate strength of the resin holding the composite together, in the total composite matrix. For aerospace vehicles that slip the bonds of Earth and enter the vacume of space, any compo ...

High thermal conductivity materials with low CTE, and high strength and stiffness are required for high thermal flux applications. In addition, if these materials are relatively inexpensive, lightweight and non-toxic, and have low vapor pressure to survive in space-operating environments, they will be attractive candidates for thermal management in aerospace structures. Such materials are urgently ...

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