Manufacture and characterisation of piezoelectric broadband energy harvesters based on asymmetric bistable cantilever laminates

P. Harris, W. Skinner, C. R. Bowen, H. A. Kim

Research output: Contribution to journalArticle

9 Citations (Scopus)
154 Downloads (Pure)

Abstract

In this paper a bistable asymmetric laminate is manufactured and coupled to a ferroelectric material for potential energy harvesting applications. A cantilever configuration is explored and the harvester response as a function of vibration frequency, vibration level and electrical load resistance examined. The harvester is characterised at low and high vibration levels where the device exhibits either single well oscillations (at low vibration amplitude) or snap-through events (at high vibration amplitude). As the vibration levels increase and the device approaches snap-through it exhibits softening where the peak power moves to lower frequencies with differences in power levels during up-sweep and down-sweep of frequencies. Examination of the frequency dependence of power for a range of load resistances indicates a broadening of the harvester performance at higher vibration levels and during snap-through.

Original languageEnglish
Pages (from-to)65-76
Number of pages12
JournalFerroelectrics
Volume480
Issue number1
Early online date6 Jul 2015
DOIs
Publication statusPublished - 2015
EventEuropean Conference on Application of Polar Dielectrics - , Lithuania
Duration: 7 Jul 2014 → …

Keywords

  • bistable
  • composite
  • ferroelectric
  • harvesting
  • Piezoelectric

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