Performance of 50 MHz transducers incorporating fiber composite, PVDF, PbTiO3 and LiNbO3

J. Z. Zhao, C. H.F. Alves, K. A. Snook, J. M. Cannata, W. H. Chen, R. J. Meyer, S. Ayyappan, T. A. Ritter, K. K. Shung

Research output: Contribution to journalConference articlepeer-review

14 Scopus citations

Abstract

The performance of high frequency single element transducers depends greatly upon the mechanical and electrical properties of the piezoelectric materials used. This study compares the design and performance of transducers incorporating different materials. The materials selected include 1-3 PZT fiber composite, PbTiO3 ceramic, PVDF film, and LiNbO3 single crystal. Transducers were tested for insertion loss and -6dB bandwidth using the pulse/echo response from a flat quartz target. All transducers were constructed with a 3 mm aperture size and f number between 2 to 3. Backing and matching materials were varied to optimize each design. An additional design consideration is electrical impedance matching to 50 ohm especially for the fiber composite and PbTiO3 transducers due to their relatively high dielectric constant. Sensitivity between transducers displayed a significant variation, with insertion losses from -21.3 dB to -46 dB. -6dB bandwidths were in the range of 47 to 118%. In-vitro UBM images of human eye were made to compare the different transducers.

Original languageEnglish (US)
Pages (from-to)1185-1190
Number of pages6
JournalProceedings of the IEEE Ultrasonics Symposium
Volume2
StatePublished - Dec 1 1999
Event1999 IEEE Ultrasonics Symposium - Caesars Tahoe, NV, USA
Duration: Oct 17 1999Oct 20 1999

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Fingerprint Dive into the research topics of 'Performance of 50 MHz transducers incorporating fiber composite, PVDF, PbTiO<sub>3</sub> and LiNbO<sub>3</sub>'. Together they form a unique fingerprint.

Cite this