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13 October 2006 Experimental performance of a novel aerosol sorting and deposition system for bio-threat sensing applications
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Abstract
Sarnoff Corporation and the Naval Research Laboratory, through support from HSARPA, are developing an automated, high throughput bio-aerosol physical enrichment system designed for use as part of a biological-threat protection system. The Biological Aerosol-Capture-Enrichment (BioACE) system is a bio-aerosol collection system that combines three unique technologies to create physically enriched aerosol samples that can be subsequently interrogated by any number of bio-threat detection systems for the presence of threat agents. An air-to-air concentrator uses an inertial separation technique to highly concentrate an aerosol sample presented to a dual wavelength ultra-violet laser induced fluorescence (UVLIF) optical trigger used to discriminate potential threat particles from non-threat particles conveyed in a collimated particle stream. This particle classification information is used to trigger an electrostatic deposition mechanism to deposit only those particles determined to be potential bio-threats onto a stainless steel substrate. Non-threat particles are discarded with the exiting airflow. A prototype laboratory system in which particle size dependent elastic scatter rater than fluorescence provides the triggering signal has been experimentally qualified. This paper will present a detailed overview of the prototype system and discuss the physical enrichment results achieved.
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Timothy Pletcher, Joseph McGinn, David Keller, Alan Huston, Jay Eversole, and Vasanthi Sivaprakasam "Experimental performance of a novel aerosol sorting and deposition system for bio-threat sensing applications", Proc. SPIE 6398, Optically Based Biological and Chemical Detection for Defence III, 63980A (13 October 2006); https://doi.org/10.1117/12.686677
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