Award Data

This project will establish the clear feasibility of bonded GaN-GaAs heterostructures to enable wide-bandgap heterojunction bipolar transistors (HBTs) with an unprecedented combination of high power, speed, and linearity at high frequencies (>10 GHz). Over the past decade, GaN-based high electron mobility transistors (HEMTs) have matured in reliability and performance and set the standard in high- ...

Conventional shortwave infrared (SWIR), midwave infrared (MWIR), and long-wave (LWIR) III-V (e.g. gallium indium antimonide, or GaInSb) and II-VI (e.g. mercury cadmium telluride, or HgCdTe) epitaxial semiconductor materials show useful performance for various infrared photodetection applications, but their high-cost and substantial cooling requirements seriously limit the wide field deployment of ...

As the single largest consumer of materials and energy use worldwide, the construction sector remains a prime target for materials reuse reform. (Krausmann et al., 2009; De Ia Rue du Can & Price, 2008). Construction and ongoing operation of the built environment extracts a significant amount of resources -- and on an ongoing basis. According to the U.S. Green Building Council (USGBC), buildings ac ...

Frostbite affects workers of all disciplines from recreational hikers, mountain climbers, snow cleanup crews, construction workers, electrical, oil, gas, and crew workers, police officers and firefighters, baggage handlers, and soldiers. While frostbite can occur at the nose, ears, cheeks, chin, and groin, the areas of greatest concern are the hands and feet due to peripheral vasoconstriction and ...

Energy is a critical enabling component of military operations and demand for it will continue to increase over the next few decades. Effective utilization of renewable energy could reduce demand for fuel for forward operating bases (FOBs), remote operating bases (ROBs), and expeditionary forces, and battlefields providing longer term energy solutions that support sustainment of technical superior ...

Per- and polyfluoroalkyl substances (PFAS) have emerged as a pervasive and persistent threat to drinking water throughout the world. Called ‘forever chemicals” because their high stability leads PFAS to build up in the environment. PFAS accumulates in the blood from exposures and is associated with various cancers and other illnesses. There is an urgent need for a technology that can both remo ...

Sivananthan Laboratories in collaboration with the University of Illinois at Chicago and the University of Central Florida propose to model absorption in two dimensional materials and develop designs with structured materials for the amplitude modulation of emissivity. The optical simulations—with commercial COMSOL code--will be used in the calculation of the electric field distribution in the s ...

Long wavelength infrared (LWIR) imaging systems, owing to their advantages in adverse environments, are crucial for target-acquisition tasks in DoD missions. Current detection and imaging technologies that cover the LWIR spectral region typically operate at cryogenic temperatures of 77 K or lower, which require expensive and bulky cooling systems that increase the overall size, weight, and power, ...

Thermal imaging is an important tool for information gathering and situational awareness, especially in low light or visibly obscured conditions.  Warm objects that are emissive in the MWIR or LWIR bands can be observed, including the body heat of soldiers, exhaust gases from vehicles, rockets or firearms, residual heat in camouflaged vehicles or airframes, and many other objects critical to thre ...

  This Phase II SBIR will design, develop, and test a software defined acoustic communications system with an open-source hardware platform, software architecture, and integrated development environment enabling end-users to operate in any subsea operational environment. This Phase II will mature this technology from proof of concept to a fully qualified acoustic modem product that meets or exce ...