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	Volume 6, Issue 2 Pg 61 - 127 (June 2011)
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Far East Journal of Electronics and Communications

These pathways lead to the formation of acetaldehyde and other products with high selectivity. It is recognized that together with atmospheric oxygen the presence of humidity greatly influences the gas detection. Accordingly, it is important to understand the role of alcohol vapor in the sensing mechanism. The goal of this work is to improve the detection of surface species of

thick film gas sensors under their working conditions using computer calculation, and to correlate the sensor signals with the relative changes of the electric resistance

Interaction between alcohol molecules and

is investigated using B3LYP method by DFT. We study the structural, total energy, thermodynamic properties of absorption of

and

in room temperature. When exposed to ethanol, the

-based sensors showed oxidation products consisting of acetaldehyde and ethyl acetate. All the calculations were carried out using Gaussian program package. Density Functional Theory (DFT) calculations interact between them. The results show a sensitivity enhancement in resistance and capacitance when ethanol is near the surface so converted different products.

Far East Journal of Electronics and Communications
Volume 6, Issue 1, Pages 45 - 59 (March 2011)

DENSITY FUNCTION THEORY STUDY OF GAS SENSOR BASED ON NANO-CRYSTAL FOR ALCOHOLS
Leila Mahdavian

Abstract:
Alcohol dehydrogenation and condensation reactions are involved in chain growth pathways on

thick film gas sensors under their working conditions using computer calculation, and to correlate the sensor signals with the relative changes of the electric resistance

Interaction between alcohol molecules and

is investigated using B3LYP method by DFT. We study the structural, total energy, thermodynamic properties of absorption of

and

in room temperature. When exposed to ethanol, the

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