Use of a CNT-coated Piezoelectric Cantilever with Double Transduction As a Gas Sensor for Benzene Detection at Room Temperature

In this work, we propose to use a screen-printed piezoelectric cantilever with double transduction. Indeed, the piezoelectric cantilever is used as a resonant type sensor coated with carbon nanotubes (CNTs) as sensitive layer. Then, the resistance of CNTs is measured in static mode in parallel thank...

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Bibliographic Details
Published in:Procedia engineering 2014, Vol.87, p.708-711
Main Authors: Clément, P., Llobet, E., Lucat, C., Debéda, H.
Format: Article
Language:English
Subjects:
31-longitudinal mode
benzene
chemical gas sensor
CNTs
double transduction
piezoelectric cantilever
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Summary:In this work, we propose to use a screen-printed piezoelectric cantilever with double transduction. Indeed, the piezoelectric cantilever is used as a resonant type sensor coated with carbon nanotubes (CNTs) as sensitive layer. Then, the resistance of CNTs is measured in static mode in parallel thanks to a modification of the cantilever top electrode. The combination of the CNTs equilibrium conductivity measurement and the resonance frequency shift of the 31-longitudinal mode allows the use of this device as a chemical gas sensor for benzene detection. The responses towards benzene concentrations under different relative humidity backgrounds are discussed.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2014.11.636