Award Data

ABSTRACT: Nanocrystals (NCs) offer many potential benefits for optical refrigeration; these quantum-confined materials have discrete energy levels, large optical transition dipole moments, and high photoluminescence quantum efficiency. Using well-characterized upconverting ion-doped metal oxide NCs and core-shell semiconductor nanocrystals as a baseline, a design of experiments (DOE) will be cond ...

ABSTRACT: Electromagnetically-resonating infrared metamaterial elements may be used to control the phase of emitted radiation across a planar surface. Such a coated surface can be designed to produce a highly directional emitted wavefront from a large aperture high-angular-resolution array. Active angular control may be achieved using electronically-tunable metamaterial elements. Like all phased- ...

ABSTRACT: The behavior of the Chalcogenide based ion-conducting memristor lends itself for use as an element in a simple neuromorphic computing circuit. The reaction of a circuit to an external stimulus may be the result of its ability to learn from previous similar, yet unrelated exposures to environmental stimulus. A highly specialized variation of the memristor, previously developed by the Ad ...

ABSTRACT: The Air Force is currently seeking improvements in capacity and responsiveness of Thermal Energy Storage (TES) systems. Current research and development with Phase Change Materials (PCM) in carbon foam and pelletization of metal (i.e. copper) encapsulated metal hydrides seek to overcome these limitations by increasing the thermal conductivity (i.e. copper, carbon) while also increasing ...

ABSTRACT: Fresnel-zone lens can meet many of the Air Force's requirements for conformal aperture technology including light-weight, large aperture size, and the ability to conform to a curved surface. However, aberrations limit the effective field-of-view of static Fresnel-zone lens, and the spectral performance is limited to a narrow band. A tunable Fresnel-zone lens with variable-zone-radi ...

ABSTRACT: This Phase I STTR effort will demonstrate an ultra-compact, lightweight spectrometer with no moving parts for the mid-infrared wavelength region. The planar integrated device will feature bound electromagnetic waves, known as surface plasmon polaritons, in the mid-IR spectral region. This range is ideal for chemical identification based on the vibrational spectra known for most molecu ...

ABSTRACT: Our Phase II program concentrates on extending, rectifying, and validating the ETM engineering transition model for 3D flows. ETM solves PDE"s for both transition onset and intermittency and has full 3D capabilities, shown to generate swept onset curves and variable transitional lengths downstream of the onset curve. It is incorporated into Navier-Stokes codes in a manner akin to the i ...

ABSTRACT: Primordial, Panoptic, and intuVision propose the development of Tentaclea multi-camera immersive surveillance system that synthesizes information from hundreds of video streams into an intuitive 3D representation. Team Primordial will start with our existing state-of-the-art baseline componentsPanoptic C-Thru, intuVision Panoptes, and intuVision Video Recallwhich already fully meet 6 a ...

ABSTRACT: The Air Force currently relies on large, fixed nodes, such as the Air Operations Center, for their command and control (C2) and intelligence, surveillance and reconnaissance (ISR) needs. These sites are tasked with providing critical processing, analysis and dissemination. This centralized approach localizes mission critical data in information enclaves and creates a communications bott ...

ABSTRACT: The new single-stage high step-down ratio/high power handling/high current capable solid-state power DC/DC converters will substantially increase the power density of radiation-resistant DC/DC converters. This new converter has the potential to boast power densities 3 5 times current state-of-the-art, while reaching radiation hardness unobtainable by conventional magnetic based solutio ...