An ultrawide bandwidth high frequency phased-array ultrasound transducer fabricated using the PMN-0.3PT single crystal

Chi Man Wong, Yan Chen, Haosu Luo, Jiyan Dai, Kwok Ho Lam, Helen Lai Wa Chan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

High frequency (≥20 MHz) phased-array ultrasound transducers exhibit many benefits in biomedical applications. However, high performance array transducers, with high resolution and high sensitivity, are hard to fabricate due to the limitation of their rigorous dimensions. In this study, to achieve a high -6 dB bandwidth, a 20-MHz 64-elements phased-array transducer based on a PMN-0.3PT single crystal as an active layer has been fabricated using a photolithography method. High piezoelectric properties of PMN-0.3PT, such as high electromechanical coupling coefficients and high piezoelectric constants, lead the transducer to exhibit a -6 dB bandwidth of ∼90% and an insertion loss of 29 dB in the pulse-echo measurement. The results show a great enhancement on the performance when comparing with those reported 20-MHz array transducers based on piezoelectric single crystal and ceramic materials.
Original languageEnglish
Title of host publication2016 IEEE International Ultrasonics Symposium, IUS 2016
PublisherIEEE Computer Society
Volume2016-November
ISBN (Electronic)9781467398978
DOIs
Publication statusPublished - 1 Nov 2016
Event2016 IEEE International Ultrasonics Symposium, IUS 2016 - Tours, France
Duration: 18 Sep 201621 Sep 2016

Conference

Conference2016 IEEE International Ultrasonics Symposium, IUS 2016
Country/TerritoryFrance
CityTours
Period18/09/1621/09/16

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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