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Analysis of the Planar Electrode Morphology for Capacitive Chemical Sensors

Authors:
Luiz Eduardo Bento Ribeiro
Fabiano Fruett

Keywords: interdigitated electrodes; ring-shaped electrodes; serpentine electrodes; capacitive sensors; electrode structure; interdigital electrodes

Abstract:
Three different electrode structures are compared in this work: conventional interdigitated electrodes (IDE), serpentine electrodes (SRE) and ring-shaped electrodes (RSE). Simulation results and experimental characterization of these electrodes showed that ring-shaped electrodes have a slight capacitance increase per unit of area, thus being more sensitive when used as a capacitive sensor. Furthermore, the ring-shaped electrodes are more suitable in process that requires dripping, for better use of the drop distribution. This is the case of liquid substances or sensors with sensitive elements such as zeolite.

Pages: 179 to 182

Copyright: Copyright (c) IARIA, 2015

Publication date: August 23, 2015

Published in: conference

ISSN: 2308-3514

ISBN: 978-1-61208-426-8

Location: Venice, Italy

Dates: from August 23, 2015 to August 28, 2015