Award Data

The Department of Homeland Security's charter has a fundamental requirement to collaborate with other government agencies. Secure collaboration on this scale requires strong identity management which can "vouch for" DHS personnel working with other agencies, and makes it possible to provide DHS resources to individuals in other agencies whose work requires it. We propose the development of a reu ...

We propose to run 3 experiments to refine and utilize measures of oculomotor activity and pupil diameter change to assess an individual's malicious or deceptive intent. We also propose to concurrently develop the software and determine the hardware necessary for online, real-time assessment of malintent based on prior research results and the results of the proposed experiments. In addition to ocu ...

The Phase 2 objective is to provide NIST with a modular gauge head unit equipped with InsituTec's standing wave probe technology. The complete gauge head unit will be retrofitted to the NIST M48 which is one of the most precise measuring machines in the world. This unit will enable NIST to achieve the agency's program goal in dimensional metrology which is to provide microscale measurement capacit ...

The recent emergence of the Silicon Drift detector (SDD), for use in energy dispersive x-ray spectrometry (EDS), has made possible x-ray event streams with count rates as high as 1-10 Mcps. A problem with existing digital signal processing, as applied to SDDs, is the significant presence of coincidence peaks above the x-ray background. These coincidence peaks occur with amplitudes comparable to lo ...

An existing low-cost FPGA-based processing platform will be demonstrated with fiber-coupling to single-photon detectors, to perform photon-arrival time stamping with

Voxtel has demonstrated efficient high-speed photon counting with thresholded linear-mode avalanche photodiode (APD) receivers using multi-gain-stage InGaAs/InAIAs APDs. In contrast to Geiger APDs, thresholded photon-counting linear APD receivers are thought not to suffer afterpulsing, and can support maximum count rates (MCR) up to 2 or 3 orders of magnitude faster than Geiger APDs. However, the ...

New sampling methods are now available and offer greater sample collection efficiency, smaller sample volumes and significantly reduced power consumption in a much more compact design. Technologies such as electrostatic precipitation (EP) have demonstrated over 90% collection efficiency for particles in the 1 to 10 micron size range. EP collectors can be made very small and compact and require les ...

A stable, well characterized InGaAs materials growth and photodetector fabrication process will be used to fabricate matched photodiodes optimized for balanced homodyne detection. The 1-mm-diameter p-i-n photodetectors will be manufactured back-illuminated with a 5-micron absorber, allowing residual light to reflect off the front-side metal to make a double pass through the active layer. Ultra-hig ...

High quantum efficiency (QE), fast (

First responders operate in challenging acoustic environments where noise, alarms, engines, radio communications, and communications to others in the environment make voice communications with hands-free, voice operated switch (VOX) operation difficult. Broad Digital will use a combination of passive acoustic design, noise suppression and subtraction, signal separation, and equalization to provide ...