Award Data

An approach is proposed to identify, characterize and integrate high temperature materials into harsh environment diagnostic systems. Program partner URI will sputter candidate conductive oxides with continuously varying levels of doping. Test specimens will be fabricated and systematically assessed using combinatorial synthesis to determine which exhibit the most favorable characteristics e.g., ...

Full certification and testing of application programs provides a level of assurance that they will not harm host systems, but it is expensive and delays use of the application. For this reason, software users are often faced with a vexing dilemma: in order to obtain critical new functionality, they must use software that may damage their systems or render it vulnerable to attack. To address thi ...

ABSTRACT: This project addresses the need for high-efficiency broad-spectrum PV cells. The proposed original PV design is based on quantum dots with built-in charge (Q-BIC), where the dot charging is realized by selective doping of dot medium. The preliminary data demonstrate that the charged dots placed in a single p-n-junction strongly enhance harvesting and conversion of sub-bandgap photons an ...

During Phase I, we have conducted proof-of-principle experiments to fabricate exchange-coupled isotropic permanent magnets with SmFeN-Fe4N compositions employing shock wave consolidation technique. We have also successfully synthesized nearly 100% Fe16N2 in bulk form. Under this Phase II plan, we propose to optimize and further enhance the isotropic exchange-coupled permanent magnets with higher e ...

ABSTRACT: Due to scarcity of spectrum, Dynamic Spectrum Access (DSA) becomes a needed technology to improve the utilization of electromagnetic spectrum for DoD satellite communication. However, current DSA approaches are developed for terrestrial communications without addressing the unique challenges for SATCOM environments such as error-prone spectrum sensing, high mobility, and large coverage. ...

Recently, there has been an increase in the use of anti-tamper techniques (e.g., obfuscation) in all types of software. However, applying anti-tamper techniques is technically challenging, and when applied to large, sophisticated software, there is a danger of introducing subtle bugs, or not introducing sufficient protection. The existing state of anti-tamper technology is undesirable in that it ( ...

Abstraction has been the most reliable means for gaining intellectual control of complex problems and for extending the scope and scale of our analytical abilities. In the past several years, ATC-NY and Cornell University have developed the formalism of {\em event logic\/}to support specification and reasoning about distributed systems at a very high level of abstraction and the refinement of spe ...

ABSTRACT: In this STTR phase II, HYPRES and University of California San Diego team will demonstrate a small size, weight and power, wideband (2 MHz to 2 GHz) receiver prototype based on SQUID array technology. Our SQUID array designs are based on highly linear bi-SQUID and SQUID cells arranged into a 2-dimensional (2D) array. The 2D arrays are fabricated using high-temperature superconductor I ...

Crystalplex has developed novel semiconductor nanocrystal technology that can be a platform solution to meet the Army's desire for a light emitting diode (LED) with enhanced output in the deep green region using nanoparticles. This innovation produces an efficient deep green (555-585 nm) nanoparticle emitter capable of sustaining the Army's stated goal of 120 lumens per watt of input power. Crys ...

ABSTRACT: This Phase II proposal will capitalize on the success of Phase I to further develop stable and optically efficient fluorescent particles that absorb and emit light in the infrared part of the spectrum and lack any visible light emissions. The specific goals of Phase II will be to further research infrared nanoparticles to increase their brightness with an emphasis on production scalabi ...