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

Briglin, Shawn M. and Freund, Michael S. and Sisk, Brian C. and Lewis, Nathan S. (2001) Array-based carbon black-polymer composite vapor detectors for detection of DNT in environments containing complex analyte mixtures. In: Detection and Remediation Technologies for Mines and Minelike Targets VI. Proceedings of SPIE. No.4394. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 912-921. ISBN 0819440892. https://resolver.caltech.edu/CaltechAUTHORS:20180723-112800453

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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.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.445419DOIArticle
ORCID:
AuthorORCID
Freund, Michael S.0000-0003-1104-2292
Lewis, Nathan S.0000-0001-5245-0538
Additional Information:© 2001 Society of Photo-Optical Instrumentation Engineers (SPIE). We acknowledge an OSD ARO MURI for demining, DOE, and an ARO olfactory research MURI for support of this work.
Funders:
Funding AgencyGrant Number
Army Research Office (ARO)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Subject Keywords:Land mine signatures, vapor detectors, 2,4-dinitrotoluene, carbon black
Series Name:Proceedings of SPIE
Issue or Number:4394
Record Number:CaltechAUTHORS:20180723-112800453
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180723-112800453
Official Citation:Shawn M. Briglin, Michael S. Freund, Brian C. Sisk, 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); doi: 10.1117/12.445419; https://doi.org/10.1117/12.445419
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88129
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:23 Jul 2018 19:46
Last Modified:03 Oct 2019 20:03

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