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Proceedings Paper

Overview of the TAC-BIO sensor
Author(s): Jerry Cabalo; Richard Sickenberger; Marla De Lucia; John Briles; Aime Poldmae; David Sickenberger
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Paper Abstract

In light of the current state of detection technologies designed to meet the current threat from biological agents, the need for a low-cost and lightweight sensor is clear. Such a sensor based on optical detection, with real time responses and no consumables, is possible. Devices arising from the Defense Advanced Research Projects Agency's (DARPA) Semiconductor UV Optical Sources (SUVOS) are the enabling technology. These sources are capable of emitting UV wavelengths known to excite fluorescence from biological agent particles while costing a few dollars apiece and consuming low power. These devices are exploited in the TAC-Bio Sensor. A unique optical design is used to collect the usable portion of the LED emission and focus it into the probing region of the sensor. To compensate for the low UV power density relative to UV lasers, the TAC-Bio utilizes a unique opposed flow configuration to increase the interaction between particles and the UV beam. The current TAC-Bio sensor testbed is capable of detecting fluorescence Bacillus globigii (BG, an anthrax simulant) spore agglomerates down to 5 microns in diameter. Ongoing work is focusing on increasing signal to noise so that smaller particles, possibly single spores, can be detected, as well as on including additional data channels, such as light scattering, to increase selectivity of the sensor.

Paper Details

Date Published: 20 May 2005
PDF: 12 pages
Proc. SPIE 5778, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense IV, (20 May 2005); doi: 10.1117/12.606902
Show Author Affiliations
Jerry Cabalo, U.S. Army ECBC (United States)
Richard Sickenberger, U.S. Army ECBC (United States)
Marla De Lucia, U.S. Army ECBC (United States)
John Briles, U.S. Army ECBC (United States)
Aime Poldmae, U.S. Army ECBC (United States)
David Sickenberger, U.S. Army ECBC (United States)


Published in SPIE Proceedings Vol. 5778:
Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense IV
Edward M. Carapezza, Editor(s)

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