Award Data

ABSTRACT: An ability to reduce the weight of cables has the potential to provide significant cost savings, reduce maintenance and improve reliability of satellites. The costs of developing and producing satellites are linearly proportional with the satellite"s weight, with each kilogram costing around $1 million when delivery-to-space costs are included. With global satellite launches expected to ...

The objective of this proposal is to develop Selective Availability Anti-Spoofing Module (SAASM) compliant GPS receiver for Geosynchronous Earth Orbit (GEO) applications. In this proposal, we explore an approach to design the GEO GPS SAASM receiver based on improved techniques for signal acquisition (or detection) and then signal tracking (and demodulation) of weak GPS signals. GPS signals availa ...

We propose a Phase I analysis of Signals of Opportunity (SOO), including Magnetic Velocity and Position (MVP) sensing, breakthrough passive geo-referenced navigation technology. MVP leverages classical electromagnetics to determine velocity and position with GPS-level accuracy at any depth or distance from shore. In addition to the SOO analysis, Phase I effort will conduct 3D electromagnetic mod ...

ABSTRACT:Emergence and feasibility for flexible body-worn electronics and particularly medical patches requires high performance electronics capability.The problem is that these new technologies must have flexible and conformal physical formats and conventional electronic components are not in any way flexible. In the CLAS Phase I program, a new flexible high-performance manufacturing and material ...

AlN is an attractive material for power electronics device applications due to its wide bandgap and resulting high electric breakdown field. One of the major challenges that need to be addressed to achieve full utilization of AlN for power electronics applications is the development of a doping strategy for both donors and acceptors. Ion implantation is a particularly attractive approach since it ...

For sustained coal utilization for power generation, while addressing possible long-term global climate concerns, it is imperative to capture and sequester the resulting CO2. The conventional technology for CO2 recovery from dilute flue gas after fuel combustion incurs substantial energy penalty and increases cost of electricity significantly. Approaches are therefore needed to develop low cost ...

The use of non-native substrates for GaN- based devices leads to devices with high densities of defects stemming from misfit dislocation formation due to lattice mismatch and large values of wafer bow stemming from thermal mismatch. The latter is particularly problematic as one attempts to grow device films on large area substrates. The high defect densities give rise to degraded performance and r ...

Electric vehicles, including hybrids in the nearer term, are the principal transportation technology by which the United States can become independent of foreign oil, can become energy independent overall, and can effect control over greenhouse emissions. For this to become reality, electric vehicle costs need to come down and performance needs to improve. For electric vehicle motors, the goals ...

ScienceTomorrow in collaboration with Dr. David C Joy, at the University of Tennessee Research is proposed to fabricate direct digital Quantitative Secondary Electron Detectors (QSED) for scanning electron microscopes (SEMs). If successful, commercial versions of the QSED would transform the SEM/STEM into a quantitative, metrological tool with enhanced capabilities that, in turn, would broaden re ...

The negative-electron-affinity (NEA) photocathodes which produce polarized electrons are a vital component of electron accelerators such as that at DoE Jefferson Lab and the Stanford Linear Accelerator Center (SLAC). Future systems, such as the International Linear Collider (ILC), will require a polarized electron beam intensity at least 20 times greater than produced by strained GaAs, which is us ...