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Carbon nanomaterial polymer composite ChemFET and chemoresistors for vapour sensing
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Covington, James A. and Gardner, J. W. (2009) Carbon nanomaterial polymer composite ChemFET and chemoresistors for vapour sensing. In: 13th International Symposium on Olfaction and the Electronic Nose, Brescia, Italy, 15-17 Apr 2009. Published in: Proceedings of the 13th International Symposium on Olfaction and Electronic Nose, Vol.1137 pp. 38-41. ISBN 978-0-7354-0674-2. doi:10.1063/1.3156557 ISSN 0094-243X.
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Official URL: http://dx.doi.org/10.1063/1.3156557
Abstract
Carbon nanotubes (CNTs) have been proposed for a broad spectrum of applications, including chemical sensing. Here we report on an investigation of multi-walled CNTs (MWCNTs) as conductive filler for composite polymer sensing films. Such materials combine conductive fillers with an insulating polymer to produce a chemically sensitive, electrically conducting material. These polymer composites offer several important advantages for chemical sensing, including room temperature operation (hence ultra low power), a broad range of selectivities (due to the wide choice of available polymers), and low manufacturing cost. Our approach is to compare the sensing qualities of these composite films, in resistive and field-effect configurations, with existing carbon black polymer composites. Their responses to propanol and toluene vapour in air show that the carbon black resistive sensors outperform CNT sensors by a factor of four in response magnitude. Thus we conclude that for these vapours and using this sensor fabrication method, carbon black polymer composite films are preferable for chemical sensing than MWCNT polymer composites.
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
| Library of Congress Subject Headings (LCSH): | Chemical detectors, Nanotubes, Carbon, Polymeric composites | ||||
| Series Name: | AIP Conference Proceedings | ||||
| Journal or Publication Title: | Proceedings of the 13th International Symposium on Olfaction and Electronic Nose | ||||
| Publisher: | American Institute of Physics | ||||
| ISBN: | 978-0-7354-0674-2 | ||||
| ISSN: | 0094-243X | ||||
| Editor: | Pardo, M and Sberveglieri, G | ||||
| Official Date: | 2009 | ||||
| Dates: |
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| Volume: | Vol.1137 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | pp. 38-41 | ||||
| DOI: | 10.1063/1.3156557 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | 13th International Symposium on Olfaction and the Electronic Nose | ||||
| Type of Event: | Other | ||||
| Location of Event: | Brescia, Italy | ||||
| Date(s) of Event: | 15-17 Apr 2009 |
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