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Novel phenomena-based dynamic model of carbon black/composite vapour sensors
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Yates, James W. T., Chappell, M. J. (Michael J.) and Gardner, J. W. (2007) Novel phenomena-based dynamic model of carbon black/composite vapour sensors. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol.463 (No.2078). pp. 551-568. doi:10.1098/rspa.2006.1776 ISSN 1364-5021.
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Official URL: http://dx.doi.org/10.1098/rspa.2006.1776
Abstract
A novel physically based mathematical model of carbon black/polymer vapour sensors is described, which incorporates parameters that have physical meaning. This model has an analytical solution and so requires negligible computational power to analyse a sensor's response to a particular form of input. Another advantage of this modelling approach is that the environmental dependencies of sensor responses may be compensated for and so help in the design of better pattern-recognition algorithms for electronic nose systems. This also means that the underlying chemistry of the sensors may be decoupled from their physical non-analyte specific properties. Experimentally, three different conducting nanocomposite polymers, poly(styrene-co-butadine), poly(ethyl-co-vinyl acetate) and poly(caprolactone), were tested. Each experiment consisted of separate exposures of the sensors to acetone and ethanol vapour in ambient air. A total of 336 such experiments were performed over a two-week period. The model was validated with respect to these data and was then fitted to the two vapour responses simultaneously, demonstrating its applicability to 'real world' systems. The temperature dependence of the model parameters was judged to be the most important factor and it needs to be compensated for when applying this type of sensor in practice.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
| Journal or Publication Title: | Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences | ||||
| Publisher: | The Royal Society | ||||
| ISSN: | 1364-5021 | ||||
| Official Date: | 8 February 2007 | ||||
| Dates: |
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| Volume: | Vol.463 | ||||
| Number: | No.2078 | ||||
| Number of Pages: | 18 | ||||
| Page Range: | pp. 551-568 | ||||
| DOI: | 10.1098/rspa.2006.1776 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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