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Title: PZT/P(VDF-TrFE) nanocomposite hydrophones for ultrasonic measurements
Authors: Chan, HLW 
Lau, ST
Kwok, KW 
Choy, CL
Keywords: Lead compounds
Nanostructured materials
Ultrasonic measurement
Ultrasonic transducers
Vinyl resins
Issue Date: 1998
Publisher: IEEE
Source: 1998 IEEE Ultrasonics Symposium proceedings : October 5-8, 1998, Sendai, Miyagi, Japan, p. 611-614 How to cite?
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.
ISBN: 0-7803-4095-7
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.
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