Array-based carbon black-polymer composite vapor detectors for detection of DNT in environments containing complex analyte mixtures

Shawn M. Briglin; Michael S. Freund; Brian C. Sisk; Nathan Saul Lewis

doi:10.1117/12.445419

18 October 2001 Array-based carbon black-polymer composite vapor detectors for detection of DNT in environments containing complex analyte mixtures

Shawn M. Briglin, Michael S. Freund, Brian C. Sisk, Nathan Saul Lewis

Author Affiliations +

Proceedings Volume 4394, Detection and Remediation Technologies for Mines and Minelike Targets VI; (2001) https://doi.org/10.1117/12.445419
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

Thin films of carbon black-organic polymer composites have been deposited across two metallic leads, with sorption of vapors producing swelling-induced resistance changes of the detector films. To identify and classify vapors, arrays of such vapor sensing elements have been constructed in which each element of the array contains a different polymer as the insulating phase and a common conductor, carbon black, as the conducting phase. The differing gas-solid partition coefficients for the various polymers of the detector array produce a pattern of differential resistance changes that is used to classify vapors and vapor mixtures. The performance of this detector array system towards 2,4-dinitrotoluene, the predominant signature in the vapor phase above land mines, in the presence high concentrations of water or of acetone has been evaluated.

Citation Download Citation

Shawn M. Briglin, Michael S. Freund, Brian C. Sisk, and Nathan Saul Lewis "Array-based carbon black-polymer composite vapor detectors for detection of DNT in environments containing complex analyte mixtures", Proc. SPIE 4394, Detection and Remediation Technologies for Mines and Minelike Targets VI, (18 October 2001); https://doi.org/10.1117/12.445419

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