PZT/P(VDF/TrFE) nanocomposite hydrophones for ultrasonic measurements

H. L.W. Chan, S. T. Lau, Kin Wing Kwok, C. L. Choy

Research output: Journal article publicationConference articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Needle-type hydrophones for the calibration of medical ultrasonic transducers have been fabricated using lead zirconate titanate/vinylidene fluoride-trifluoroethylene [PZT/P(VDF-TrFE)] 0-3 nanocomposite films. The 0-3 nanocomposite film has been prepared by incorporating nanosized PZT powder (derived from a sol-gel process) in a P(VDF-TrFE) matrix. Since the piezoelectric coefficients of PZT and P(VDF-TrFE) have opposite signs, the PZT and P(VDF-TrFE) phases in the nanocomposites have been poled in opposite directions in order to give enhanced piezoelectric activity. A nanocomposite hydrophone with 0.2 volume fraction of PZT has been characterized and found to be more sensitive than a P(VDF-TrFE) hydrophone of similar structure.
Original languageEnglish
Pages (from-to)611-614
Number of pages4
JournalProceedings of the IEEE Ultrasonics Symposium
Volume1
Publication statusPublished - 1 Dec 1998
EventProceedings of the 1998 International Ultrasonics Symposium - Sendai, Miyagi, Japan
Duration: 5 Oct 19988 Oct 1998

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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