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Proceedings Paper

Fiber waveguide chemical sensors for detection of explosive related vapors
Author(s): Michael T. Carter; Ross C. Thomas; Morris E. Berton
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Paper Abstract

We report on progress toward development of mid-infrared spectroscopic chemical sensors for explosive related chemicals (ERCs) associated with land mines, particularly 1,3-dinitrobenzene (DNB) and 2,4-dinitrotoluene (DNT). Our goal is to develop a fast, reversible and sensitive device for mobile, real-time detection of ERCs. Fiber waveguide sensors are fabricated by coating thin polymer films onto a mid-IR transmissive chalcogenide fiber. ERCs partition into the polymer film where they absorb IR radiation at characteristic wavelengths in the evanescent wave region near the fiber-polymer interface. A wide variety of polymers possessing potentially desirable physical and chemical properties for ERC detection have been characterized. We have demonstrated reversible detection of DNB and DNT at low concentrations in air using a dynamic gas flow system.

Paper Details

Date Published: 13 August 2002
PDF: 11 pages
Proc. SPIE 4742, Detection and Remediation Technologies for Mines and Minelike Targets VII, (13 August 2002); doi: 10.1117/12.479123
Show Author Affiliations
Michael T. Carter, Eltron Research, Inc. (United States)
Ross C. Thomas, Eltron Research, Inc. (United States)
Morris E. Berton, Eltron Research, Inc. (United States)

Published in SPIE Proceedings Vol. 4742:
Detection and Remediation Technologies for Mines and Minelike Targets VII
J. Thomas Broach; Russell S Harmon; Gerald J. Dobeck, Editor(s)

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