Award Data

We propose the exploration of single crystal GaN waveguides for the fabrication of optoelectronic integrated circuits. The feasibility of using GaN for short wavelength (up to 365 nm) OEIC's will be established in Phase I via the demonstration of a channel waveguide based phase shifter. The Al(sub x)GA(sub 1-x)N material system with its transparency from 365 nm to 12 microns, tunable refractive in ...

The Air Force seeks new biological materials for aerospace and commercial applications. Such biological materials should have characteristics that lead to multiple applications or multifunctionality. We propose to use the membrane protein bacteriorhodopsin (BR) in a highly ordered structural form to meet the above needs. Bacteriorhodopsin has unique optical functionality that is impossible to achi ...

We propose a method of generating x-rays that will combine high instantaneous output of rotating-anode x-ray tubes with continuous cooling rates as great or greater than fixed-anode tubes. This combination can be achieved in a mechanically simple way, and will reduce spot wobble without vacuum seals, vacuum bearings, deflecting field, or conventional cathodes, by either thermionic or photoemission ...

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We propose to develop a general purpose computer code for calculating the scattering from antennas on an aircraft, which is described by a CAD file. The scattering contribution will include both the passive structure mode and active irradiation mode, calculcated by a hybrid of a high-frequency ray technique and a rigorous finite element technique. The proposed code will be made compatible with the ...

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RESEARCH WILL BE CONDUCTED BY HICHEM CORPORATION, TO DEVELOP A NEW TECHNOLOGY FOR PYROLYSIS OF SCRAP TIRES. DISPOSAL OF USED TIRES IS A BIG PROBLEM IN THE WORLD, ESPECIALLY USA, SINCE MORE THAN 2.5 MILLION TIRES ARE DISCARDED EACH YEAR. MOST OF THESE TIRES ARE DISPOSED IN LANDFILLS. PYROLYSIS OF SCRAP TIRES HELPS TO RECOVER AND REUSE MOST OF THE VALUABLE CHEMICAL AVAILABLE IN TIRES. PYROLYSIS OF S ...

The objective is to develop a design for a broadband (5 percent or greater) millimeter wavelength high fineness ratio radome. The transmission efficiency is expected to be greater than 60 percent across the frequency band, antenna scan angles and flight (temperature) profile. Antenna pattern shift and distortion will be minimized and resistance to ground handling, rain erosion, flight loads and th ...

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The ability to display critical information within the optical train of a night vision device has become a requirement in the aviation community. The current display approaches rely on CRT's, optical combiners, lenses, and fiber optic cable to inject the symbology within the optical train of the night vision device. Besides decreased image tube life, bulkiness, and additional weight, the performan ...