Simple and facile microfabrication of a flexible interdigitated capacitor for sensing applications

Kanaparthi, Srinivasulu and Kayal, Santu and Singh, Shiv Govind (2019) Simple and facile microfabrication of a flexible interdigitated capacitor for sensing applications. Flexible and Printed Electronics, 4 (1). 015005. ISSN 2058-8585

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Abstract

Herein, we report an interdigitated capacitive sensor fabricated by mask-free laser lithography. The device is fabricated by laser printing of reverse features with toner followed by metal deposition and lift-off of toner in acetone. The fabricated device was utilized to measure ion concentration in water as well as a touch sensor. The ion sensor is able to measure the total ion concentration of water as well as distinguish the water from different sources. The touch sensor exhibited a significant difference between the capacitance values, with and without touch. This is a rapid, scalable and inexpensive approach for the fabrication of capacitive sensors and it involves neither harmful chemicals nor expensive and time-consuming fabrication steps.

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IITH Creators:	IITH Creators ORCiD Singh, Shiv Govind http://orcid.org/0000-0001-7319-879X
Item Type:	Article
Uncontrolled Keywords:	capacitive sensor, interdigitated capacitor, laser printing, liquid sensing, microfabrication, touch sensor
Subjects:	Electrical Engineering
Divisions:	Department of Electrical Engineering
Depositing User:	Team Library
Date Deposited:	21 May 2019 04:40
Last Modified:	21 May 2019 04:40
URI:	http://raiithold.iith.ac.in/id/eprint/5267
Publisher URL:	http://doi.org/10.1088/2058-8585/aafc97
Related URLs:	Google Scholar

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