Relationship between piezoelectric properties of ceramics and output performance of 33-mode piezoelectric energy harvesters

Tae Gon Lee, Ho Jun Lee, Sun Woo Kim, Dae Hyeon Kim, Ku Tak Lee, Chong Yun Kang, Miso Kim, Sahn Nahm

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Ring-type 33-mode piezoelectric energy harvesters (PEHs) were fabricated using Pb(Zr,Ti)O3- and (Na,K)NbO3-based piezoelectric ceramics. The relationship between the output performance of the PEH and the piezoelectric properties of the ceramics was investigated. Ring-type PEHs were selected for this investigation because they can be mounted on a specimen holder at the same position, ensuring structurally reliable output performance. The × Q m/ value, which was reported as a figure of merit (FOM) of the PEH under resonance condition, could not adequately explain the output performances of the 33-mode PEH with a specimen holder much larger than the size of the specimen. The d 33 × g 33 value, which is a FOM derived from the theoretical output power of the 33-mode PEH, can explain the variation of the output power of the 33-mode PEH with a large specimen holder. However, since the variation of the output power was more accurately explained by the d 33 × g 33 × value, this was suggested as a new FOM of the output power of the ring-type 33-mode PEH with a large specimen holder.

Original languageEnglish
Article number115027
JournalSmart Materials and Structures
Volume27
Issue number11
DOIs
Publication statusPublished - 2018 Oct 26

Keywords

  • 33-mode vibration
  • ceramic
  • figure of merit (FOM)
  • piezoelectric energy harvester
  • piezoelectric property

ASJC Scopus subject areas

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

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