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Proceedings 2017, 1(4), 444; doi:10.3390/proceedings1040444

Surface Acoustic Wave Sensors for the Detection of Hazardous Compounds in Indoor Air

1
Time and frequency Department, FEMTO-ST Institute, 26 ch. de l’Epitaphe 25030 Besançon, France
2
NIMBE, UMR 3685, CEA, CNRS, Université Paris-Saclay, CEA-Saclay, 91191 Gif-sur-Yvette, France
3
ICMUB, UMR CNRS 6302, 9 avenue Alain Savary—BP 47870—21078 Dijon Cedex, France
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
*
Author to whom correspondence should be addressed.
Published: 24 August 2017
Download PDF [592 KB, uploaded 14 October 2017]

Abstract

In this work, the authors show the capabilities of Surface Acoustic Wave (SAW) devices coupled with various absorbents to probe the properties of gas sensitive materials for the manufacturing of hazardous gas sensors. The great capabilities of cobalt corroles for the trapping of carbon monoxide (CO) were exploited to produce selective sensors. These corroles were deposited on SAW delay lines surfaces and then exposed to carbon monoxide (CO) in standard conditions. Concentrations of a few hundreds of ppb were measured emphasizing the interest of such sensors for the detection of CO. Another type of sensitive layers exhibiting specific porosity adapted to the trapping of formaldehyde (CH2O) were deposited on similar delay lines. A detection threshold of 140 ppb was shown. These encouraging results pave the way for the development of a functionalized SAW sensors network for multi-gas detection in indoor air.
Keywords: SAW; Love waves; cobalt corroles; Nano-porous films; carbon monoxide; formaldehyde SAW; Love waves; cobalt corroles; Nano-porous films; carbon monoxide; formaldehyde
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Vanotti, M.; Theron, C.; Poisson, S.; Quesneau, V.; Naitana, M.; Soumann, V.; Brandès, S.; Desbois, N.; Gros, C.; Tran-Thi, T.-H.; Blondeau-Patissier, V. Surface Acoustic Wave Sensors for the Detection of Hazardous Compounds in Indoor Air. Proceedings 2017, 1, 444.

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