Lee, S.T.F., Lam, K.H. , Zhang, X.M. and Chan, H.L.W. (2011) High-frequency ultrasonic transducer based on lead-free BSZT piezoceramics. Ultrasonics, 51(7), pp. 811-814. (doi: 10.1016/j.ultras.2011.03.009) (PMID:21477833)
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Abstract
This paper describes the fabrication and evaluation of a high-frequency (40 MHz) transducer based on lead-free piezoceramics for ultrasonic imaging. The transducer with an aperture size of 0.9 mm has been fabricated using barium strontium zirconate titanate ((Ba0.95Sr0.05)(Zr0.05Ti0.95)O3, abbreviated as BSZT) ceramics. The lead-free BSZT has a piezoelectric d33 coefficient of 300 pC/N and an electromechanical coupling factor kt of 0.45. High-frequency ultrasound transducers were fabricated and a bandwidth of 76.4% has been achieved with an insertion loss of −26 dB. Applications in high resolution biological and medical imaging could be possible with this lead-free material.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Lam, Dr Koko |
| Authors: | Lee, S.T.F., Lam, K.H., Zhang, X.M., and Chan, H.L.W. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Ultrasonics |
| Publisher: | Elsevier |
| ISSN: | 0041-624X |
| ISSN (Online): | 1874-9968 |
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