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Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/492

Title: PT/P(VDF-TrFE) hydrophone array
Authors: Lau, Sien Ting
Kwok, Kin-wing
Chan, Helen L. W.
Subjects: PT
P(VDF-TrFE)
Composite
Hydrophone
Issue Date: 2001
Publisher: IEEE
Citation: 2001 IEEE Hong Kong Electron Devices Meeting : proceedings : 30 June, 2001, The Hong Kong Polytechnic University, p. 71-74.
Abstract: 0-3 composite thin films of lead titanate (PT) in poly(vinylidene fluoride-trifluoroethylene) (PT/P(VDF-TrFE)) have been prepared by the spin-coating method. The piezoelectric coefficients of PT and P(VDF-TrFE) have opposite signs, while their pyroelectric coefficients have the same sign. The two phases of the composite film are then poled in opposite directions to prepare a piezoelectric film with vanishing pyroelectric response. An 8-element hydrophone array with this composite film as the sensing elements have been fabricated and characterized. The array has good receiving sensitivity over several MHz. The angular responses of the array elements are measured and the results are compared to a theoretical model. The acoustical and electrical crosscoupling between the array elements are also discussed.
Rights: © 2001 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/10397/492
ISSN: 0780367146
Appears in Collections:MRC Conference Papers & Presentations
AP Conference Papers & Presentations

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