Lead-free piezoelectric-metal-cavity (PMC) actuators

Kwok Ho Lam, Dun Min Lin, Kin Wing Kwok, Helen Lai Wa Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


A piezoelectric piezoelectric-metal-cavity (PMC) actuator was reported previously that can exhibit a large flexural displacement. In this paper, a lead-free piezoelectric ceramic was used as a driving element of the PMC actuator. Bi0.5(Na0.72BK0.175Li0.1)0.5TiO3(abbreviated as BNKLT) is a soft-type piezoelectric ceramic with good piezoelectric properties at room temperature. Both the electrical and mechanical properties of the BNKLT PMC actuator were measured. With good piezoelectric coefficients and low density, the BNKLT ceramic has the potential to be used as the driving element of the lead-free actuator.
Original languageEnglish
Article number4589182
Pages (from-to)1682-1685
Number of pages4
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Issue number8
Publication statusPublished - 1 Aug 2008

ASJC Scopus subject areas

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering


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