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Novel gas chromatographic microsystem with very large sensor arrays for advanced odour discrimination
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Haran, F. K. Che, King, P. H., Covington, James A. and Gardner, J. W. (2007) Novel gas chromatographic microsystem with very large sensor arrays for advanced odour discrimination. In: 6th IEEE Sensors Conference, Atlanta, GA, 28-31 Oct 2007. Published in: Sensors, 2007 IEEE pp. 1361-1363. ISBN 9781424412617. ISSN 1930-0395.
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Official URL: http://dx.doi.org/10.1109/ICSENS.2007.4388664
Abstract
Here we report on a new technology for electronic noses (e-noses). This combines two large sensor arrays with a micro-package that behaves similarly to a gas chromatograph column, inspired by the nature of the human olfactory mucosa. Our system comprises two silicon based chemo resistive arrays of 300 sensors with a micro-fluidic package, formed by stereo-lithography, fitted between them. In this configuration, the first sensor array provides a "spatial" response to an odour, similar to a traditional e-nose. Then, as the odour pulse travels along the column, chemical components are selectively delayed, thus the second array gives temporal information. Experiments show a time delay of up to 38 s between ethanol and toluene pulses traveling down the column. We believe that this combination of an initial sensor array, producing spatial data with a second array creating spatio-temporal data significantly enhances the ability of an e-nose to discriminate between complex odours.
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
| Series Name: | IEEE Sensors | ||||
| Journal or Publication Title: | Sensors, 2007 IEEE | ||||
| Publisher: | IEEE | ||||
| ISBN: | 9781424412617 | ||||
| ISSN: | 1930-0395 | ||||
| Official Date: | 2007 | ||||
| Dates: |
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| Number of Pages: | 3 | ||||
| Page Range: | pp. 1361-1363 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | 6th IEEE Sensors Conference | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Atlanta, GA | ||||
| Date(s) of Event: | 28-31 Oct 2007 |
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