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Array-based vapor sensing using chemically sensitive carbon black-polymer resistors

Lewis, Nathan S. and Lonergan, Mark C. and Severin, Erik J. and Doleman, Brett J. and Grubbs, Robert H. (1997) Array-based vapor sensing using chemically sensitive carbon black-polymer resistors. In: Detection and Remediation Technologies for Mines and Minelike Targets II. Proceedings of SPIE. No.3079. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 660-670. ISBN 0819424943. https://resolver.caltech.edu/CaltechAUTHORS:20180723-125439537

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Abstract

We describe herein the construction of a simple, low-power, broadly responsive vapor sensor. Carbon black-organic polymer composites have been shown to swell reversibly upon exposure to vapors. Thin films of carbon black-organic polymer composites have been deposited across two metallic leads, with swelling-induced resistance changes of the films signaling the presence of vapors. To identify and classify vapors, arrays of such vapor-sensing elements have been constructed, with each element containing the same carbon black conducting phase but a different organic polymer as the insulating phase. The differing gas-solid partition coefficients for the various polymers of the sensor array produce a pattern of resistance changes that can be sued to classify vapors and vapor mixtures. This type of sensor array has been shown to resolve common organic solvents, including molecules of different classes as well as those within a particular class.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.280895DOIArticle
ORCID:
AuthorORCID
Lewis, Nathan S.0000-0001-5245-0538
Grubbs, Robert H.0000-0002-0057-7817
Additional Information:© 1997 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was supported in part by the Army Research Office MURI grant DAAH04-96-1-0048. Additional supporters include the Caltech Consortium in Chemistry and Chemical Engineering, the E.I. DuPont de Nemours and Company Inc., the Eastman Kodak Company, the National Aeronautics and Space Administration and the National Science Foundation grant CHE-9202583. M.C.L. acknowledges Caltech for an Arthur Amos Noyes Fellowship and B.J.D. acknowledges the Natural Science and Engineering Research Council of Canada for a 1967 Centennial Fellowship and the O'Brien Foundation for financial support.
Funders:
Funding AgencyGrant Number
Army Research Office (ARO)DAAH04-96-1-0048
Caltech Consortium in Chemistry and Chemical EngineeringUNSPECIFIED
E. I. DuPont de Nemours and Company, Inc.UNSPECIFIED
Eastman Kodak CompanyUNSPECIFIED
NASAUNSPECIFIED
NSFCHE-9202583
Arthur A. Noyes FellowshipUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
O'Brien FoundationUNSPECIFIED
Series Name:Proceedings of SPIE
Issue or Number:3079
Record Number:CaltechAUTHORS:20180723-125439537
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180723-125439537
Official Citation:Nathan Saul Lewis, Mark C. Lonergan, Erik J. Severin, Brett J. Doleman, Robert H. Grubbs, "Array-based vapor sensing using chemically sensitive carbon black-polymer resistors", Proc. SPIE 3079, Detection and Remediation Technologies for Mines and Minelike Targets II, (22 July 1997); doi: 10.1117/12.280895; https://doi.org/10.1117/12.280895
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88136
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:23 Jul 2018 20:58
Last Modified:03 Oct 2019 20:03

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