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Investigation into the pressure sensing properties of PVDF and PVB thick film capacitors

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Show simple item record Arshak, Khalil Morris, Deirdre Arshak, Arousian Korostynska, Olga Kaneswaran, Kelly 2011-07-01T15:41:38Z 2011-07-01T15:41:38Z 2002
dc.description peer-reviewed
dc.description.abstract This paper examines the sensitivity of polyvinylidene fluoride (PVDF) and polyvinyl butyral (PVB) capacitors to pressures ranging from 0 – 100 kPa. The capacitors were formed by screenprinting onto flexible substrates and have an active area of 2 x 3 mm2. There are no moving parts and as a result the complexity of sensor design, fabrication and packaging issues may be reduced. After fabrication, sensors were adhered to planar and cylindrical surfaces and interfaced with an AD7746 24-bit capacitance to digital converter. This allowed precise measurements to be taken. It has high linearity and accuracy and can accept up to 17 pF absolute capacitance. The pressure was applied by housing the sensor in an airtight container and pumping air into the system to increase the pressure. It was found that PVDF devices on planar surfaces exhibited the largest response to the application of pressure. This was further increased for devices placed on cylindrical surfaces. It is thought that this is due to cracking of the thick film upon bending of the substrate. The results suggest that PVDF and PVB are suitable candidate materials for use in a pressure monitoring system. en_US
dc.language.iso eng en_US
dc.publisher IEEE Computer Society en_US
dc.relation.ispartofseries 29th International Spring Seminar;
dc.rights ©2006 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. en_US
dc.subject capacitors en_US
dc.subject sensor design en_US
dc.subject pressure monitoring system
dc.title Investigation into the pressure sensing properties of PVDF and PVB thick film capacitors en_US
dc.type Conference item en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.type.restriction none en
dc.internal.authorcontactother olga.

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