Superplastic deformation of defect-free Au nanowires via coherent twin propagation

Jong Hyun Seo, Youngdong Yoo, Na Young Park, Sang Won Yoon, Hyoban Lee, Sol Han, Seok Woo Lee, Tae Yeon Seong, Seung Cheol Lee, Kon Bae Lee, Pil Ryung Cha, Harold S. Park, Bongsoo Kim, Jae Pyoung Ahn

Research output: Contribution to journalArticlepeer-review

189 Scopus citations

Abstract

We report that defect-free Au nanowires show superplasticity on tensile deformation. Evidences from high-resolution electron microscopes indicated that the plastic deformation proceeds layer-by-layer in an atomically coherent fashion to a long distance. Furthermore, the stress-strain curve provides full interpretation of the deformation. After initial superelastic deformation, the nanowire shows superplastic deformation induced by coherent twin propagation, completely reorientating the crystal from <110> to <100>. Uniquely well-disciplined and long-propagating atomic movements deduced here are ascribed to the superb crystallinity as well as the radial confinement of the Au nanowires.

Original languageEnglish (US)
Pages (from-to)3499-3502
Number of pages4
JournalNano letters
Volume11
Issue number8
DOIs
StatePublished - Aug 10 2011

Keywords

  • deformation
  • gold
  • mechanical
  • nanowire
  • superplastic
  • tensile

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