PT/P(VDF-TrFE) hydrophone array

Sien Ting Lau, Kin Wing Kwok, H. L.W. Chan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

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 cross-coupling between the array elements are also discussed.
Original languageEnglish
Title of host publicationProceedings of the IEEE Hong Kong Electron Devices Meeting
Pages71-74
Number of pages4
Publication statusPublished - 1 Jan 2001
Event2001 IEEE Hong Kong Electron Devices Meeting - Hong Kong, Hong Kong
Duration: 30 Jun 2001 → …

Conference

Conference2001 IEEE Hong Kong Electron Devices Meeting
Country/TerritoryHong Kong
CityHong Kong
Period30/06/01 → …

Keywords

  • Composite
  • Hydrophone
  • P(VDF-TrFE)
  • PT

ASJC Scopus subject areas

  • Engineering(all)

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