A Noise Spectroscopy-Based Selective Gas Sensing with MOX Gas Sensors - Aix-Marseille Université
Journal Articles Fluctuation and Noise Letters Year : 2018

A Noise Spectroscopy-Based Selective Gas Sensing with MOX Gas Sensors

Abstract

Communicated by Zoltan Gingl We propose a new method for obtaining a °uctuation-enhanced sensing (FES) signature of a gas using a single metal oxide (MOX) gas micro sensor. Starting from our model of adsorption-desorption (A-D) noise previously developed, we show theoretically that the product of frequency by the power spectrum density (PSD) of the gas sensing layer resistance °uctuations often has a maximum which is characteristic of the gas. This property was experimentally con¯rmed in the case of the detection of NO 2 and O 3 using a WO 3 sensing layer. This method could be useful for classifying gases. Furthermore, our noise measurements con¯rm our previous model showing that PSD of the A-Dnoise in MOX gas sensor is a combination of Lorentzians having a low frequency magnitude and a cut-o® frequency which depends on the nature of the detected gas.
Fichier principal
Vignette du fichier
A Noise Spectroscopy-Based Selective Gas Sensing with MOX Gas Sensors.pdf (1006.66 Ko) Télécharger le fichier
Loading...

Dates and versions

hal-02114914 , version 1 (30-04-2019)

Identifiers

Cite

S. Gomri, J. Seguin, T. Contaret, T. Fiorido, Khalifa Aguir. A Noise Spectroscopy-Based Selective Gas Sensing with MOX Gas Sensors. Fluctuation and Noise Letters, 2018, 17 (02), pp.1850016. ⟨10.1142/S0219477518500165⟩. ⟨hal-02114914⟩
71 View
324 Download

Altmetric

Share

More