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

14 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

Bibliographical note

Funding Information:
This work was supported by National Research Foundation of Korea (NRF) grants funded by the Korean Government Ministry of Education, Science and Technology (MEST) (Grant Nos. R01-2008-000-20185-0 , 331-2008-1-C00102 , 2009-0070725 and 2010-0005393 ) and the Priority Research Centers Program ( 2010-0020207 ).

Keywords

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

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