Increasing the Sensitivity and Selectivity of Metal Oxide Gas Sensors by Controlling the Sensitive Layer Polarization - LAAS-Micro Nano Bio Technologies Accéder directement au contenu
Communication Dans Un Congrès Année : 2012

Increasing the Sensitivity and Selectivity of Metal Oxide Gas Sensors by Controlling the Sensitive Layer Polarization

Résumé

The effects of bias current on sensitivity and selectivity of resistive Metal-Oxide (MOX) sensors toward gases have been investigated. While the working temperature is kept constant, it has been found that tuning the polarization of the MOX thin film induces changes on its sensitivity toward gases. Besides, the behavior of sensitivity versus bias current depends on the nature of the gas and of the thin sensing film, meaning it is possible to enhance the selectivity by adjusting the polarization of different sensitive layers. This underutilized parameter provides a new way of improving easily gas sensors sensitivity and above all selectivity. It would then be interesting to polarize individually each sensor of a multi-sensor device in order to optimize the whole system performances, which may represent a breakthrough in the development of smart E-Nose.

Domaines

Electronique
Fichier principal
Vignette du fichier
Final_Paper_IEEE_Sensors_vf.pdf (436.27 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00732255 , version 1 (14-09-2012)

Identifiants

  • HAL Id : hal-00732255 , version 1

Citer

Nicolas Dufour, Yoan Veyrac, Philippe Menini, Frédéric Blanc, Chabane Talhi, et al.. Increasing the Sensitivity and Selectivity of Metal Oxide Gas Sensors by Controlling the Sensitive Layer Polarization. IEEE Sensors 2012, Oct 2012, Taipei, Taiwan. 4p. ⟨hal-00732255⟩
597 Consultations
1306 Téléchargements

Partager

Gmail Facebook X LinkedIn More