Lead-free BSZT/epoxy 1-3 composites for ultrasonic transducer applications

S. T F Lee, Kwok Ho Lam, Xuming Zhang, H. L W Chan

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

2 Citations (Scopus)

Abstract

With high piezoelectric coefficient (d33> 300 pC/N) and electromechanical coupling factor (kI = 0.45), lead-free barium strontium zirconium titanate ((Ba0.95Sr0.05) (Zr 0.05Ti0.95) O3, abbreviated as BSZT)was used to fabricate BSZT/epoxy 1-3 composites with different volume fractions of BSZT ranging from 0.55 - 0.85. The electromechanical properties of the 1-3 composites were determined by the resonance technique. It was found that the theoretical modeling of the 1-3 composites matches quite well with the measured material properties.The 1-3 composite with φ = 0.65 was chosen to be fabricated as a transducer due to its comparatively high value of kt. The BSZT/epoxy 1-3 composite transducer demonstrates large bandwidth with good sensitivity, suggesting high potential in biomedical applications.
Original languageEnglish
Title of host publicationNEMS/MEMS Technology and Devices
Pages90-93
Number of pages4
DOIs
Publication statusPublished - 12 Jul 2011
EventInternational Conference on Materials for Advanced Technologies, ICMAT2011 - Symposium G: NEMS/MEMS and MicroTAS - Suntec, Singapore
Duration: 26 Jun 20111 Jul 2011

Publication series

NameAdvanced Materials Research
Volume254
ISSN (Print)1022-6680

Conference

ConferenceInternational Conference on Materials for Advanced Technologies, ICMAT2011 - Symposium G: NEMS/MEMS and MicroTAS
CountrySingapore
CitySuntec
Period26/06/111/07/11

Keywords

  • 1-3 composite
  • BSZT
  • Lead-free
  • Ultrasonic transducer

ASJC Scopus subject areas

  • Engineering(all)

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