The stress-dependent piezoelectric coefficient of ZnO wire measured by piezoresponse force microscopy

Hyunsoo Lee, Joonkyu Park, Sang A. Han, Donghyeok Lee, K. B. Kim, N. S. Lee, Jun Young Park, Yongho Seo, Sangwook Lee, Young Jin Choi

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We studied a converse piezoelectric effect of individual ZnO wires by using a conductive cantilever tip attached to the end of each wire. The piezoelectric coefficients d33 of individual wires were measured and found to be in the range of 1-45 pm V-1, some of them being much larger than that of bulk ZnO. A 20% increment of d33 was found when 0.32 GPa stress was applied, but the d33 was decreased when the wire was bent by excessive compression.

Original languageEnglish
Pages (from-to)101-104
Number of pages4
JournalScripta Materialia
Volume66
Issue number2
DOIs
StatePublished - Jan 2012

Keywords

  • Energy harvesting
  • PFM
  • Piezoelectricity
  • ZnO
  • ZnO wire

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