Broadband focusing ultrasonic transducers based on dimpled LiNbO3plate with inversion layer

Jin Chen, Jiyan Dai, Chao Zhang, Zhitian Zhang, Guanping Feng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

Abstract

A high-frequency broadband focusing transducer based on dimpled LiNbO3inversion layer plate has been fabricated and characterized. A spherical surface with a curvature radius of 6 mm is formed on the half-thickness LiNbO3inversion layer plate of Y36° cut orientation. The domain structure in the cross section is observed after a hydrofluoric acid etching process. For transducer fabrication, conductive epoxy is used as the backing material and polymer is deposited on the front face as the matching layer. The center frequency, bandwidth, and insertion loss of the focused transducer are measured to be 72 MHz, 136%, and-32 dB, respectively. The focused transducer has been successfully used for rabbit eyeball imaging and a better imaging capability compared with the planar transducer has been demonstrated. These promising results prove that the dimpled LiNbO3inversion layer plate has great potential for fabrication of high-frequency broadband focusing ultrasonic transducers.
Original languageEnglish
Article number6373803
Pages (from-to)2797-2802
Number of pages6
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume59
Issue number12
DOIs
Publication statusPublished - 18 Dec 2012

ASJC Scopus subject areas

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering

Cite this