Vobecka, Z. and Blue, R. and Vilela, F. and Skabara, P. J. and Uttamchandani, D. (2012) Microelectrode sensor utilising nitro-sensitive polymers for application in explosives detection. Micro and Nano Letters, 7 (9). pp. 962-964. ISSN 1750-0443Full text not available in this repository. (Request a copy from the Strathclyde author)
This Letter describes a fabrication of a microsensor incorporating a novel customised nitro-sensitive polymer derived from the propylenedioxythiophene family. Electrochemical polymerisation was used to selectively grow different types of localised polymer films on interdigitated electrode arrays, thereby fabricating miniature sensors that exhibited a highly selective and reversible response to chemical vapours containing 'nitro' (NO2) groups. Such nitro-bearing vapours are also present in trace quantities in the atmosphere in the presence of explosives. Vapours of nitropropane and nitrobenzene, serving as model analytes for explosives, were used for sensor testing. The sensors were demonstrated to have up to three orders of magnitude higher signal response to vapours from nitro compounds compared to other vapours commonly found in the atmosphere. The authors believe this is the highest selectivity to nitro compounds reported from a polymer-based chemicapacitor sensor.
|Keywords:||chemical sensors, explosives, polymerisation, polymers, microelectrodes, Chemical engineering|
|Subjects:||Technology > Chemical technology > Chemical engineering|
|Department:||Faculty of Science > Pure and Applied Chemistry|
Faculty of Engineering > Electronic and Electrical Engineering
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|Depositing user:||Pure Administrator|
|Date Deposited:||17 Oct 2012 10:59|
|Last modified:||12 Jun 2013 16:13|
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