Open AccessReal-time detection of 1-butanol VOCin an indigenously developed Gas chamber
Author(s) -
Pratima Bhat,
S. K. Naveen Kumar
Publication year - 2022
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1221/1/012005
Subject(s) - wheatstone bridge , butanol , materials science , instrumentation (computer programming) , optoelectronics , thin film , analytical chemistry (journal) , substrate (aquarium) , n butanol , voltage , nanotechnology , electrical engineering , chemistry , chromatography , engineering , computer science , resistor , oceanography , organic chemistry , geology , ethanol , operating system
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.