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Applied Physics A

, Volume 108, Issue 4, pp 987–991 | Cite as

High-frequency PIN–PMN–PT single crystal ultrasonic transducer for imaging applications

  • Y. Chen
  • K. H. Lam
  • D. Zhou
  • W. F. Cheng
  • J. Y. DaiEmail author
  • H. S. Luo
  • H. L. W. Chan
Article

Abstract

A high-frequency (∼60 MHz) ultrasonic transducer with a [001]-oriented 0.27Pb(In1/2Nb1/2)O3–0.45Pb(Mg1/3Nb2/3)O3–0.28PbTiO3 (PIN–PMN–PT) piezoelectric single crystal as an active element has been fabricated and characterized. The poled PIN–PMN–PT single crystal has thickness mode electromechanical coefficient k t of 0.56 and piezoelectric constant d 33 of 1550 pC/N. The −6 dB bandwidth of the transducer is 73 % and the insertion loss at its centre frequency is −20 dB. With the study as a function of temperature, the PIN–PMN–PT transducer shows better thermal stability than the binary single crystal transducer. Furthermore, the transducer was evaluated using a 30-μm aluminum wire phantom image, in which the −6 dB axial and lateral resolutions are found to be 26 μm and 127 μm, respectively. Ultrasonic images of fish eyes were obtained with the 60-MHz transducer. It is shown that the high-sensitivity transducer can produce the images with high signal-to-noise ratio and good contrast.

Keywords

Piezoelectric Property Insertion Loss Ultrasonic Transducer Phantom Image Aluminum Wire 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This work was supported by the Hong Kong Innovative Technology Council (Project No. ITS/044/09 FP) and the Centre for Smart Materials of the Hong Kong Polytechnic University.

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Y. Chen
    • 1
  • K. H. Lam
    • 1
  • D. Zhou
    • 1
  • W. F. Cheng
    • 1
  • J. Y. Dai
    • 1
    Email author
  • H. S. Luo
    • 2
  • H. L. W. Chan
    • 1
  1. 1.Department of Applied Physics and Materials Research CentreThe Hong Kong Polytechnic UniversityHong KongChina
  2. 2.Information Materials and Devices Research Center, Shanghai Institute of CeramicsChinese Academy of ScienceShanghaiChina

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