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Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/587

Title: Effect of dielectric relaxation on the performance of P(VDF-TrFE) copolymer ultrasonic transducers
Authors: Kwok, Kin-wing
Chan, Helen L. W.
Choy, Chung-loong
Subjects: Copolymers
Dielectric relaxation
Permittivity
Polyethylenes
Issue Date: 1998
Publisher: IEEE
Citation: ISAF 1998 : proceedings of the eleventh IEEE International Symposium on Applications of Ferroelectrics, Montreux, Switzerland, August 24-27, 1998, p. 243-246.
Abstract: The complex dielectric permittivity of vinylidene fluoride-trifluoroethylene copolymer with 20 mol% of TrFE [P(VDF-TrFE) 80/20] has been measured over the frequency range of 500 kHz to 20 MHz at temperatures varying from 20° to 100 °C. This copolymer has the highest electromechanical coupling coefficient k[sub t] among all TrFE compositions and has thus attracted considerable interest in ultrasonic transducer applications. The effect of dielectric relaxation on the performance of VDF-TrFE transducers is discussed.
Rights: © 1998 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
Type: Conference Paper
URI: http://hdl.handle.net/10397/587
ISBN: 0780349598
Appears in Collections:MRC Conference Papers & Presentations
AP Conference Papers & Presentations

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