Award Data

LWIR is well suited for free space communications because of its atmospheric window and low scattering by dust, precipitation, and fog. Due to recent developments of QCLs, the technology is poised to provide the high speed LWIR transmitter for such a free space communication system. However, a corresponding advance in LWIR detectors for the high-speed receiver is needed. The specifics of the LWIR ...

Infrared devices fabricated using III-V strained-layer superlattice (SLS) materials have many advantages over present state-of-the-art HgCdTe detectors, e.g., cost, manufacturability, operability, and theoretically lower Auger generation rates. However, due to the presence of inherent growth related defects the SLS materials have not achieved full potential. While growth improvements are anticipat ...

The state-of-the-art in infrared scene projection uses micro-machined resistor arrays. While a proven technology, these arrays are limited in frame-rate and dynamic range, and can be prohibitively costly as array size increases. Alternative technologies ...

ABSTRACT:The LWIR spectrum is well suited for moderate- to long-range free space communications because of its atmospheric window and low scattering by dust, haze, precipitation, and fog. The recent impressive laser development of QCLs is poised to provide the high speed LWIR transmitter for such a free space communication system; a corresponding advance in LWIR detectors is needed to enable the h ...

ABSTRACT:Type II strained-layer superlattice (SLS) materials are predicted to have much lower Auger recombination rates than those of HgCdTe, leading to lower dark currents; however, they are limited by Shockley-Read-Hall recombination via defect states near mid-gap. Hydrogenation is a technique that has proven to be effective in electrically passivating defects in various semiconductor-based devi ...

ABSTRACT: An organizational culture that promotes problem solving is necessary for success in any organization. Nondestructive Inspection (NDI) is the inspection of a structure or component in any manner that will not impair its future usefulness. The purpose of the inspection may be to detect flaws, measure geometric characteristics, determine material structure or composition, or it may characte ...

ABSTRACT: This program targets development of a high-performance thermoelectric (TE) cooler with a figure-of-merit, ZT>3, which greatly exceeds currently available technology. The cooler is fabricated using Group II-VI compound semiconductors, i.e. HgCdSe or HgCdTe, using a low dimensional structure know as a"superlattice"(SL). The proposed TE coolers will operate at temperatures ranging from 5 ...

ABSTRACT: Accurate prediction of part performance/reliability is at the core of health management of air vehicles and of supply chain management. Methodologies are needed to accurately predict/evaluate parts performance/reliability with compounding problem criteria/factors for early corrective actions and acquisition of aerospace parts. Accurate problem part (bad actor) identification and resou ...

ABSTRACT: The engineer will be guided through the creation of criteria, alternatives and evaluation techniques in order to make a better decision. BENEFIT: The engineer will be guided through the creation of criteria, alternatives and evaluation techniques in order to make a better decision.

ABSTRACT: This proposal proposes to develop an agile methodology to identify bad actor parts to proactively address part performance. The methodology with algorithms and models will be developed by merging ideas from different areas of Science and Engineering. Some of the algorithms and models to researched for methodology development are ranking models, record-linkage algorithms, Hidden markov ...