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Proceedings Paper

Detection of chemical and biological compounds through fluorescent emission in a hollow core optical fiber
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Paper Abstract

This paper describes initial work to develop an optical system to detect small concentrations, less than 1 ppm, of chemical or biological agents by monitoring the fluorescence emission from a hollow optical fiber. This class of sensors would enable highly sensitive detection of chemical or biological agents by a small and lightweight sensor. The sensors would also be readily adaptable to different types of analyte by changing the fluorescent coating. Hollow core optical fibers can be filled with a sol-gel matrix that incorporates a fluorophor. Current work has established the sensitivity of an amine dye to weak concentrations of formaldehyde. Formaldehyde can be introduced into a spacecraft crew environment by out-gassing, crew activities, experimental payloads, and human and bacterial metabolism. Formaldehyde is an important trace contaminant to monitor because it is detrimental in small doses and long term exposure to low concentrations causes hypersensitivity. These issues become increasingly important in a closed-loop environment such as the crew habitat for astronauts on a long term mission.

Paper Details

Date Published: 10 May 2006
PDF: 8 pages
Proc. SPIE 6222, Sensors for Propulsion Measurement Applications, 62220R (10 May 2006); doi: 10.1117/12.664123
Show Author Affiliations
Amanda Gates Duffell, Univ. of Alabama in Huntsville (United States)

Published in SPIE Proceedings Vol. 6222:
Sensors for Propulsion Measurement Applications
Valentin Korman, Editor(s)

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