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 S Lewis

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

1 Citation (Scopus)

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 (as a selected volatile organic carbon vapor), has been evaluated.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsI Takeuchi, J Newsam, L Wille, H Koinuma, E Amis
Pages133-144
Number of pages12
Volume700
Publication statusPublished - 2002
EventCombinatorial and Artificial Intelligence Methods in Materials Science - Boston, MA, United States
Duration: Nov 26 2001Nov 29 2001

Other

OtherCombinatorial and Artificial Intelligence Methods in Materials Science
CountryUnited States
CityBoston, MA
Period11/26/0111/29/01

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Keywords

  • 2,4-dinitrotoluene
  • Carbon black
  • Land mine signatures
  • Vapor detectors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Briglin, S. M., Freund, M. S., Sisk, B. C., & Lewis, N. S. (2002). Array based carbon black-polymer composite vapor detectors for detection of DNT in environments containing complex analyte mixtures. In I. Takeuchi, J. Newsam, L. Wille, H. Koinuma, & E. Amis (Eds.), Materials Research Society Symposium - Proceedings (Vol. 700, pp. 133-144)