Award Data

Obscurants and smokes are a combat multiplier that can assist in the defeat of trackers, sensors, optical enhancement devices, seekers, and the human eye. Obscuration is desirable at wavelengths that range from the short wavelength visible (0.4 micron) to the far-infrared (25 micron). Historically, this has been accomplished using separate munitions for the visible and IR regions of the spectrum ...

The objective of this proposed program is the design, development and demonstration of novel semiconductor quantum barrier/well devices that utilize spin-control mechanisms available in diluted magnetic materials (DMS) for achieving higher-level functionality (e.g., transistor action) at very high switching speeds and frequencies. The potential simplicity of DMS devices compared to standard thre ...

Conflict hinges on human behavior, but today's combat simulations only represent behavior in terms of heuristics. Yet these rule-based representations. fail to include human variability earning, and being intelligently interactive. They do not take advantage of an adversary's mistakes. An empirical modeling of behavior is difficult because behavior is intent and situation dependent. In contrast, a ...

The Army has an obvious and immediate need for greater exploration of small molecules in the search for novel anti-malarial drugs. The innovative techniques offered in this proposal utilize methods of iterated automated fragment assembly coupled with an intelligent compound screening tool to facilitate scientific advancement. The resulting computational methods can increase the rate and exploratio ...

Concrete designs of a novel actuator, which can deliver significantly augmented force and/or stroke relative to conventional actuators, and associated drive electronics and a control system, are focus of our technology development program. The plannedeffort leverages recent work done by Prof. C. S. Lynch of Georgia Tech on modeling and characterization of relaxor single crystals and development of ...

Simulation techniques play an important role in material and device design at the nanoscale. Among these techniques, molecular dynamics (MD) simulation has become a powerful tool for revealing complex physical phenomena. However, completely modeling nano-structured materials and nano-devices of tangible size using MD simulation is unrealistic, even when using today’s most powerful supercomputers ...

In battlefield environments, ballistic impact may result in the failure of military structures and materials, including armor. To improve the reliability and safety of military structures and materials, it is important to study material failure under ballistic impact in the design stage. There are two main failure phenomena related to the material response due to ballistic impact. One is adiaba ...

Spectral fingerprinting for chemical agent detection or industrial process and analytic chemistry requires a compact, lightweight, tunable mid-infrared (mid-IR) laser. A room temperature, fiber-based mid-IR laser is proposed that starts with a pump laser in the near-IR, and then down-shifts the light based on cascaded Raman wavelength shifting in mid-IR fibers. The laser is widely tunable by sim ...

The determination of the feasibility of utilizing optically-interrogated electro-optic and magneto-optic sensors as the front-end of a new, near-field characterization system for measuring time-varying, non-sinusoidal signals in microwave digital and mixed-signal circuits is proposed. The extraction of complex signals from the internal nodes of circuits or larger systems such as multi-chip module ...

Theoretical investigations and technology developments during last years have created new conceptual approach to design and build a new class of plasma wave electronics detectors of terahertz (THz) wave range. Terahertz radiation corresponds to thefrequency bands of molecular and lattice vibrations in gases, fluids, and solids. THz detectors with higher sensitivity is urgently need for important a ...