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

Nathan S Lewis, Mark C. Lonergan, Erik J. Severin, Brett J. Doleman, Robert H. Grubbs

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

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, tncluding molecules of different classes as well as those within a particular class.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages660-670
Number of pages11
Volume3079
ISBN (Print)0819424943
Publication statusPublished - 1997
EventDetection and Remediation Technologies for Mines and Minelike Targets II - Orlando, FL, USA
Duration: Apr 21 1997Apr 24 1997

Other

OtherDetection and Remediation Technologies for Mines and Minelike Targets II
CityOrlando, FL, USA
Period4/21/974/24/97

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Array-based vapor sensing using chemically sensitive carbon black-polymer resistors'. Together they form a unique fingerprint.

  • Cite this

    Lewis, N. S., Lonergan, M. C., Severin, E. J., Doleman, B. J., & Grubbs, R. H. (1997). Array-based vapor sensing using chemically sensitive carbon black-polymer resistors. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3079, pp. 660-670). Society of Photo-Optical Instrumentation Engineers.