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The research proposed here is built on the recent successful fabrication of metal oxide semiconductor heterjunction field effect transistors (MOS-HFETs) based on AlGaN/GaN heterostructures with very high drain-current-driving and gate-control capabilitiesas well as unprecedented high breakdown voltages by the P.I.s research group at Kansas State University. III-nitride HFETs have great promises i ...

A lidar laser transmitter useful for profiling of clouds, aerosols, and differential absorption measurements of atmospheric trace constituents such as carbon dioxide, water vapor, and ozone is proposed. The proposed laser transmitter is based on a master tunable external cavity diode laser (ECDL) used to injection lock a series of free running laser diodes (FRLD's). The FRDL's amplify the injected ...

This SBIR effort will develop advanced mode-matching structures for highly efficient electro-optic amplitude modulators in potassium titanyl phosphate (KTP). The intended application for these modulators is in intra-satellite fiber-optic data buses andother satellite communication and data-handling systems. The overall goal of this effort is the fabrication of electro-optic modulators featuring l ...

This Small Business Innovation Research (SBIR) Phase I project proposes to investigate the feasibility of fabricating large-aperture, periodic ferroelectric domain gratings for quasi-phase matched laser frequency conversion. The key innovation in this effort is the use of low temperature hydrothermally grown potassium titanyl phosphate (LTH-KTP) as the nonlinear optical substrate material. Using L ...

DESCRIPTION (provided by applicant): Zirconia bio-ceramics (e.g. Prozyr) have the highest toughness and strength compared to other bio-ceramics such as alumina (e.g. Biolox) or zirconia-toughened alumina (Biolox-Delta). However, as highlighted by the recent recall of St. Gobain zirconia heads, a critical need remains to develop bio-ceramics with both significantly reduced wear characteristics and ...

DESCRIPTION (provided by applicant): Vitamin D deficiency is now recognized as a significant health problem for middle-aged and older adults. Vitamin D deficiency exacerbates osteoporosis and causes the bone disease, osteomalacia. Vitamin D deficiency increases risk of skeletal fractures. It is well known that the ultraviolet B portion of the solar spectrum is responsible for the cutaneous product ...

A unique approach to the problem of portable signal identification training (PSIT) is proposed through the use of an integrated signals database, training software, and the re-use of operator interface software. Two training scenarios are addressed:standalone training mode and transmit training mode. The proposed approach is based entirely on COTS hardware. The approach also minimizes the hardw ...

NON-TECHNICAL SUMMARY: Annually wildfires, construction, mining, and noxious weed infestations damage millions of acres of vegetation. Public policy encourages land managers to restore damaged land by reseeding native plant species. The core US market exceeds 15,000 seed producers using inefficient methods to harvest difficult to harvest seed of native plants. Demand for large amounts of seed is d ...

NON-TECHNICAL SUMMARY: A "Forest Health Crisis" exists in many areas of the United States, characterized by the build-up of forest vegetation as a result of over a century of effective fire suppression. This unnatural accumulation of fuels poses a significant risk to long-term forest health and to the safety of nearby communities in the event of a fire. Prescribed burning, the lighting and control ...

Intelligent, maneuverable, autonomous vehicles will play a critical role in future Army systems.Key to the success of these systems will be their ability to quickly reach goal locations by traversing through unknown, unstructured or even de-structured environments. This proposal addresses how Omni-directional capability can be best exploited throughcustomized planning and control. A hierarchical p ...