Publication Details:

Established in 2008

Journal or Publication Title:

Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես

Date of publication:

2010

Volume:

3

Number:

2

ISSN:

1829-1171

Official URL:

Coverage:

131-137

Abstract:

Recently we have published several papers where noise spectroscopy might be highly useful for improving gas sensors sensitivity and selectivity. In this paper, we continued the theoretical description of adsorption–desorption noise in gas sensors. Using the Langmuir's isotherm, we derived an expression for the adsorption–desorption noise in the case when the heat of the adsorption is reduced. We have analyzed dependence of the amplitude and cut-off frequency of the power density spectrum of the noise on parameters of sensor and gas. Application of the proposed model for simulating the oxygen chemisorptions-induced noise is very important because we have shown recently experimentally the possibility of fluctuation-enhanced gas sensitivity.

Date created:

2010

Format:

pdf

Identifier:

oai:arar.sci.am:23269

Location of original object:

ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան