Fiber waveguide chemical sensors for detection of explosive related vapors

Michael T. Carter; Ross C. Thomas; Morris E. Berton

doi:10.1117/12.479123

13 August 2002 Fiber waveguide chemical sensors for detection of explosive related vapors

Michael T. Carter, Ross C. Thomas, Morris E. Berton

Proceedings Volume 4742, Detection and Remediation Technologies for Mines and Minelike Targets VII; (2002) https://doi.org/10.1117/12.479123
Event: AeroSense 2002, 2002, Orlando, FL, United States

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.

Citation Download Citation

Michael T. Carter, Ross C. Thomas, and Morris E. Berton "Fiber waveguide chemical sensors for detection of explosive related vapors", Proc. SPIE 4742, Detection and Remediation Technologies for Mines and Minelike Targets VII, (13 August 2002); https://doi.org/10.1117/12.479123

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