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 |
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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 |
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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