Abstract
0-3 composites with nanosized lead zirconate titanate (PZT) powder imbedded in a vinylidene fluoride-trifluoroethylene copolymer (P(VDF-TrFE)) matrix have been fabricated. Since the piezoelectric coefficients of PZT and P(VDF-TrFE) have opposite signs, the PZT and P(VDF-TrFE) phases in the nanocomposites were poled in opposite directions in order to enhance the piezoelectric activity. The PZT powder, prepared by a sol-gel process, has a tetragonal structure. The ratio of the (002) and (200) X-ray diffraction peaks was used as a measure of the degree of poling in the ceramic phase. The piezoelectric coefficient of the nanocomposite film was measured by a laser interferometry technique. A needle type hydrophone for the calibration of medical ultrasonic transducers was fabricated using the nanocomposite as the sensing element and its performance was evaluated.
Original language | English |
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Title of host publication | Proceedings - International Symposium on Electrets |
Publisher | IEEE |
Pages | 755-758 |
Number of pages | 4 |
ISBN (Print) | 0780350251 |
Publication status | Published - 1 Dec 1999 |
Event | 10th International Symposium on Electrets (ISE 10) - Delphi, Greece Duration: 22 Sept 1999 → 24 Sept 1999 |
Conference
Conference | 10th International Symposium on Electrets (ISE 10) |
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Country/Territory | Greece |
City | Delphi |
Period | 22/09/99 → 24/09/99 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry