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High-Performance Ultrasound Needle Transducer Based on Modified PMN-PT Ceramic with Ultrahigh Clamped Dielectric Permittivity

  • Zhiqiang Zhang
  • , Fei Li
  • , Ruimin Chen
  • , Tianfu Zhang
  • , Xiaodong Cao
  • , Shujun Zhang
  • , Thomas R. Shrout
  • , Hairong Zheng
  • , K. Kirk Shung
  • , Mark S. Humayun
  • , Weibao Qiu
  • , Qifa Zhou

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Abstract

A modified Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) polycrystalline ceramic with ultrahigh relative clamped dielectric permittivity ( ϵ S/0 = 3500) and high piezoelectric properties (d33= 1200 pC/N, kt = 0.55) was used to fabricate high-frequency miniature ultrasound transducers. A 39-MHz high-frequency ultrasound needle transducer with a miniature aperture of 0.4 mm ×0.4 mm was designed and successfully characterized. The fabricated needle transducer had an electromechanical coupling factor kt of 0.55, large bandwidth of 80% at -6 dB, and low insertion loss of -13 dB. A wire phantom and porcine eyeball imaging study showed good imaging capability of this needle transducer. The transducer performance was found to be superior to that of other needle transducers with miniature apertures, making this modified PMN-PT ceramic-based needle transducer quite promising for minimally invasive procedures in medical applications. © 1986-2012 IEEE.
Original languageEnglish
Article number8128507
Pages (from-to)223-230
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume65
Issue number2
DOIs
Publication statusPublished - 1 Feb 2018
Externally publishedYes

Bibliographical note

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Funding

This work was supported in part by the National Science Foundation of China under Grant 81527901, Grant 61571431, Grant 11325420, and Grant 11534013, in part by the National Basic Research Program of China under Grant 2015CB755500, in part by CAS Research Projects under Grant Y650311C31, Grant QYZDB-SSW-JSC018, and Grant YJKYYQ20170065, in part by the Guangdong Innovative and Entrepreneurial Research Team Program under Grant 2013S046, in part by the Natural Science Foundation of Guangdong Province under Grant 2015A030306018, Grant 2014A030313686, Grant 2014A030312006, and Grant 2014B030301013, in part by the Shenzhen Peacock Plan under Grant 20130409162728468, and in part by the Shenzhen Foundation under Grant JCYJ20170413164936017.

Research Keywords

  • Clamped permittivity
  • high-frequency ultrasound
  • modified Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) ceramic
  • needle transducer

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