Design and Simulation of Metal Oxide Gas Sensor for Breath Analyzer Application

Abstract:

Metal oxide semiconductor has been widely used for breath analyzer applications. In this work, Acetone gas is the target gas as it an important breath marker for diabetes disease. Among the different p-type metal oxide nanostructures, Nickel oxide nanospheres are used as the sensing material as it is a promising candidate for Acetone sensing. The variation of resistance of the sensing material with the concentration of the target gas was analyzed. As Acetone is a reducing gas, the resistance of the sensing layer was found to increase when the sensing layer was exposed to the target gas. The simulation was done using COMSOL Multiphysics.

• Periodical: Key Engineering Materials (Volume 877)
• Pages: 96-101
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.877.96
• Online since: February 2021
• Authors: M.S. Lekshmi*, K. Arun, K.J. Suja
• Keywords: Acetone, Breath Analyzer, Gas Sensor, Micro-Hotplate, Nickel Oxide

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