Characterizing piezoelectric cantilevers for vibration energy harvesting under ambient conditions

Ran Wei, Peng Wang, Wen H. Ko, Philip X.L. Feng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations


We report on measurement and modeling of dynamic energy harvesters based on oscillating piezoelectric cantilevers, along with careful calibration of energy conversion properties of such devices in their dynamic responses. We employ thin-film lead zirconate titanate (PZT)-based cantilevers fabricated by laser micromachining, with efficient proof masses enabled by a heavy alloy with a low melting temperature (65°C) for tuning frequency and damping. By measuring devices with different circuit parameters, and analyzing the energy conversion in time-domain oscillations, we show a model that quantitatively reveals the effects of the loading circuit for energy harvesting. We also show the effects of device dimensions on their vibrations and converted voltage output waveforms. In harvesting vibrational energy through cycles of oscillations (in 80Hz-1kHz devices), energy conversion efficiency as high as 25% has been attained.

Original languageEnglish
Title of host publication2013 IEEE Energytech, Energytech 2013
StatePublished - 2013
Event2013 IEEE Energytech, Energytech 2013 - Cleveland, OH, United States
Duration: Jul 21 2013Jul 23 2013

Publication series

Name2013 IEEE Energytech, Energytech 2013


Conference2013 IEEE Energytech, Energytech 2013
Country/TerritoryUnited States
CityCleveland, OH


  • Cantilever
  • Energy Harvesting
  • Lead Zirconate Titanate (PZT)
  • Piezoelectric
  • Ring-Down Oscillation
  • Vibration

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology


Dive into the research topics of 'Characterizing piezoelectric cantilevers for vibration energy harvesting under ambient conditions'. Together they form a unique fingerprint.

Cite this