Real-time detection of 1-butanol VOCin an indigenously developed Gas chamber

In this paper, we discuss the sensing studies of 1-butanol volatile organic compound (VOC) in an indigenously developed gas chamber. Designing of the portable gas chamber is discussed with the integration of thin-film ZnO sensor on an Inter-digitated electrodefabricated on a flexible Teflon substrat...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2022-03, Vol.1221 (1), p.12005
Main Authors: Bhat, Pratima, Naveen Kumar, S.K
Format: Article
Language:English
Subjects:
Amplifier design
Butanol
Chambers
Circuit design
Polytetrafluoroethylene
Room temperature
Substrates
Thin films
VOCs
Volatile organic compounds
Wheatstone bridges
Zinc oxide
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Summary:In this paper, we discuss the sensing studies of 1-butanol volatile organic compound (VOC) in an indigenously developed gas chamber. Designing of the portable gas chamber is discussed with the integration of thin-film ZnO sensor on an Inter-digitated electrodefabricated on a flexible Teflon substrate. Exposure of 1-butanol VOC inside the chamber causes a change in the resistance of the ZnO thin film. This change in the resistance is converted to voltage with a Wheatstone bridge network and an instrumentation amplifier circuit designed using precision components.The sensitivity of the sensor for 50 ppm and 100 ppm of 1-butanol is tested at room temperature (27°C) and the results are compared with our early studies using Keithley instruments.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1221/1/012005