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Comptes Rendus Physique
Volume 8, n° 3-4
pages 456-461 (avril 2007)
Doi : 10.1016/j.crhy.2007.04.013
Received : 22 February 2007 ;  accepted : 25 April 2007
Développement dʼun nouveau capteur de gaz basé sur la détection à large bande micro-onde
Development of a novel gas sensor based on microwave broadband detection
 

Julien Jouhannaud , Jérôme Rossignol , Didier Stuerga
ICB (Institut Carnot de Bourgogne), CNRS UMR 5209, université de Bourgogne, Mirande, BP 47870, 21078 Dijon, France 

Auteur correspondant.
Résumé

Nous présentons une méthode originale de détection des gaz. Notre capteur se compose dʼun matériau sensible introduit dans une structure coaxiale. Un champ électromagnétique (micro-ondes), émis à travers le capteur par un analyseur de réseaux vectoriel, sollicite le matériau sensible soumis à un gaz. La variation de la réponse du capteur observée est due aux variations des propriétés diélectriques du matériau sensible induite par lʼadsorption du gaz. Lʼétude fait apparaître que le capteur à base dʼoxyde SrTiO3 est quantitatif et sélectif pour trois gaz différents (eau, éthanol, toluène). Pour citer cet article : J. Jouhannaud et al., C. R. Physique 8 (2007).

The full text of this article is available in PDF format.
Abstract

We present the development of an original method of gas detection. Our sensor is composed of a sensitive material introduced into a coaxial structure. An electromagnetic field (microwave), sent out through the sensor by a vectorial network analyzer, solicits the sensitive material exposed to a gas. The observed variation of the sensor response is due to the variation of the adsorption of this gas. The study shows that the sensor with SrTiO3 is quantitative and selective to three different gases (water, ethanol, toluene). To cite this article: J. Jouhannaud et al., C. R. Physique 8 (2007).

The full text of this article is available in PDF format.

Mots-clés : Capteur de gaz, Microondes, Oxydes métalliques

Keywords : Gas sensor, Microwaves, Metal oxides




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