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

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

California Institute of Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Materials Research Society Symposium - Proceedings
Editors	I Takeuchi, J Newsam, L Wille, H Koinuma, E Amis
Pages	133-144
Number of pages	12
Volume	700
Publication status	Published - 2002
Event	Combinatorial and Artificial Intelligence Methods in Materials Science - Boston, MA, United States Duration: Nov 26 2001 → Nov 29 2001

Other

Other	Combinatorial and Artificial Intelligence Methods in Materials Science
Country	United States
City	Boston, MA
Period	11/26/01 → 11/29/01

Keywords

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

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

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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.; Freund, Michael S.; Sisk, Brian C.; Lewis, Nathan S.

Materials Research Society Symposium - Proceedings. ed. / I Takeuchi; J Newsam; L Wille; H Koinuma; E Amis. Vol. 700 2002. p. 133-144.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Briglin, SM, Freund, MS, Sisk, BC & Lewis, NS 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, Combinatorial and Artificial Intelligence Methods in Materials Science, Boston, MA, United States, 11/26/01.

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

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AB - 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.

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