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Development Of PVDF Thick Film Interdigitated Capacitors For Pressure Measurement On Flexible Melinex Substrates

Published online by Cambridge University Press:  01 February 2011

Arous Arshak ,
Khalil Arshak ,
Deirdre Morris ,
Olga Korostynska  and
Essa Jafer
Arous Arshak
Affiliation:
Department of Physics, University of Limerick, Plassey Technological Park, Castletroy, Limerick, Ireland
Khalil Arshak
Affiliation:
Electronic and Computer Engineering Department, University of Limerick, Plassey Technological Park, Castletroy, LimerickIreland
Deirdre Morris
Affiliation:
Department of Physics, University of Limerick, Plassey Technological Park, Castletroy, Limerick, Ireland
Olga Korostynska
Affiliation:
Electronic and Computer Engineering Department, University of Limerick, Plassey Technological Park, Castletroy, LimerickIreland
Essa Jafer
Affiliation:
Electronic and Computer Engineering Department, University of Limerick, Plassey Technological Park, Castletroy, LimerickIreland
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Abstract

In this work, a PVDF thick film paste was deposited onto interdigitated electrodes to form a capacitor. Two different substrates, alumina and Melinex® were used. Capacitors, fabricated on alumina substrates were tested as strain gauges, and showed a high sensitivity with low hysteresis. Capacitors on Melinex® substrates were tested as pressure sensors by adhering them to planar and cylindrical surfaces and subjecting them to pressures up to 300 kPa. Their sensitivity and hysteresis during cycling were examined and compared. It was found that sensors on cylindrical surfaces showed a higher sensitivity, however the hysteresis was also increased. It is thought that this is due to instabilities in the polymer film, accentuated by stretching of the substrate.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 870: Symposium H – Giant-Area Electronics on Nonconventional Substrates , 2005 , H2.4
Copyright
Copyright © Materials Research Society 2005

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