Design and fabrication of bimorph transducer for optimal vibration energy harvesting

Vishwas Bedekar, Josiah Oliver, Shashank Priya

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


High energy density piezoelectric composition corresponding to 0.9Pb(Zr0.56Ti0.44)O3-0.1Pb[(Zn 0.8/3Ni0.2/3) Nb2/3]O3 + 2 mol% MnO2 (PZTZNN) and 0.8[Pb(Zr0.52Ti0.48)O 3]-0.2[Pb(Zn1/3Nb2/3)O3] (PZTPZN) were synthesized by conventional ceramic processing technique using three different sintering profiles. Plates of the sintered samples were used to fabricate the piezoelectric bimorphs with optimized dimensions to exhibit resonance in the loaded condition in the range of ∼200 Hz. An analytical model for energy harvesting from bimorph transducer was developed which was confirmed by experimental measurements. The results of this study clearly show that power density of bimorph transducer can be enhanced by increasing the magnitude of product (d · g), where d is the piezoelectric strain constant and g is the piezoelectric voltage constant.

Original languageEnglish (US)
Article number5507654
Pages (from-to)1513-1523
Number of pages11
JournalIEEE transactions on ultrasonics, ferroelectrics, and frequency control
Issue number7
StatePublished - Jul 2010

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering


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