Award Data

In the field of seismic event identification, three spatial dimensions and one time dimension are almost always coupled together. This may create confusion in data perception and interpretation. A novel multi-D display device wchih can improve data visualization is needed. The object of this project is to develop a Volumetric Image Display (VID) capable of displaying multi-D volumetric images in a ...

The proposed effort investigates the use of smart materials (such as strain actuators and sensors) and modern control theory to suppress unsteady buffet loads encountered by vertical tail aircraft such as the F/A-18. The active smart material system proposed has distinct advantages over traditional passive damping treatments and active articulated control surface techniques. This innovative smart ...

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THE HIGH TEMPERATURE STRENGTH OF CERAMIC MATERIALS MAKE THEM ATTRACTIVE FOR USE IN HIGH EFFICIENCY COMBUSTION ENGINES. UNFORTUNATELY, THE POOR FRICTION AND WEAR PROPERTIES OF COMMON CERAMICS OFTEN PRECLUDE THEIR USE IN ROTATING AND SLIDING COMPONENTS. SOLID STATE LUBRICANTS ARE A POTENTIAL SOLUTION TO THIS TRIBOLOGICAL PROBLEM BUT THEY ARE USUALLY INCOMPATIBLE WITH OXIDE-BASED CERAMICS. A TITANIUM ...

Silicon carbide promises near-term insertion in high power, high temperature, applications. The wide band-gap and consequent high breakdown field of silicon carbide theoretically allows efficient high power solid state power amplifiers. Its high thermal conductivity will permit compact devices and high power density. To date, virtually all silicon carbide-based devices have been fabricated using 6 ...

Efficient blue and UV lasers are key to high density optical storage, novel communication systems, industrial and medical lasers, and specialized spectroscopic tools. By virtue of their direct bandgap (ranging from 2.09eV-InN to 3.44eV-GaN to 6.2eV-AlN) and lattice-matched heterostructure system, the III-V nitride-based semiconductors have the greatest potential to enable devices that will meet th ...

We propose a novel growth technique to produce low defect density GaN substrates - misfit dislocations will be greatly reduced and the defects due to thermal expansion mismatches will be eliminated. In Phase I the feasibility of the technology will be demonstrated. In Phase II, the process will be scalled and the substrates will be used to fabricate bright blue LEDs in collaboration with Hewlett-P ...