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ThinkMind // ALLSENSORS 2018, The Third International Conference on Advances in Sensors, Actuators, Metering and Sensing // View article allsensors_2018_3_20_78010


Array of Chemosensitive Resistors with Composites of Gas Chromatography (GC) Materials and Carbon Black for Detection and Recognition of VOCs: An Optimization Study

Authors:
Bartosz Wyszynski
Rui Yatabe
Kiyoshi Toko
Atsuo Nakao
Masaya Nakatani
Akio Oki
Hiroaki Oka

Keywords: odor sensor; chemical sensor; artificial olfaction; chemoresistance; sensor array; GC material; carbon black

Abstract:
In our previous work, we developed the concept and tested the viability of fabricating a 16-element chemosensitive resistor array for detection and recognition of volatile organic compounds. The sensing elements were fabricated using blends of Carbon Black (CB) and Gas Chromatography (GC) stationary-phase materials by coating over chemosensitive resistor devices. In this work, we extend our basic study with an ongoing attempt at optimizing the performance of our developed 16-element array versus vapors of pyrrole, benzenal, nonanal, and 2-phenethylamine. Our main concern here was studying the percolation threshold and aging of the sensing devices. The results indicate that the best performance of the fabricated sensing devices can be expected for sensing films with CB to GC-material ratio of 1.5:1 to 2:1. Sensing devices coated with blends of such composition performed in a relatively similar manner right after fabrication and after around 5-month long aging at room temperature.

Pages: 28 to 32

Copyright: Copyright (c) IARIA, 2018

Publication date: March 25, 2018

Published in: conference

ISSN: 2519-836X

ISBN: 978-1-61208-621-7

Location: Rome, Italy

Dates: from March 25, 2018 to March 29, 2018

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