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 language | English |
|---|---|
| Pages (from-to) | 611-614 |
| Number of pages | 4 |
| Journal | Proceedings of the IEEE Ultrasonics Symposium |
| Volume | 1 |
| Publication status | Published - 1 Dec 1998 |
| Event | Proceedings of the 1998 International Ultrasonics Symposium - Sendai, Miyagi, Japan Duration: 5 Oct 1998 → 8 Oct 1998 |
ASJC Scopus subject areas
- Acoustics and Ultrasonics