Award Data

THE SODIUM HEAT ENGINE (SHE) IS AN EFFICIENT DEVICE FOR THE DIRECT CONVERSION OF THERMAL ENERGY TO ELECTRICAL ENERGY. THE DEVICE HAS HIGH SPECIFIC POWER BOTH ON A VOLUME AND WEIGHT BASIS, HIGH CONVERSION EFFICIENCY WHICH IS INDEPENDENT OF SIZE, AND NO MOVING PARTS WHICH IMPLIES POTENTIALLY HIGH RELIABILITY. THESE ATTRIBUTES MAKE THE SHE AN ATTRACTIVE DEVICE FOR SDI APPLICATIONS. ALTHOUGH THE PRINC ...

Power electronic converters are essential in every MDA vehicle, with use in critical systems ranging from electric power management applications, to power distribution, to on-board servo motor/actuator drivers. Advancing state-of-the-art power electronics technologies through the use of SiC semiconductors will produce significant savings across the board in almost all areas of MDA power management ...

The objective of this proposal is to further develop IV-VI PbSnSe detectors epitaxially grown on Si substrates. The motivation of fabricating IV-VI detector arrays on Si is based on the following advantages of IV-VI Pb-salt semiconductors. (1) The large dielectric constant helps screen and localize the defect related effects. (2) The epitaxial material on Si is highly uniform, and thus the cutoff ...

HgCdTe, with its high quantum efficiency, remains the material of choice for most high-performance infrared detector applications. By varying its alloy composition, HgCdTe can be used for short wavelength to very long wavelength infrared (VLWIR); however, its use in VLWIR (12-16 microns) applications is problematic, even when grown on lattice-matched CdZnTe substrates, due to material and substrat ...