Electron-beam-induced elastic-plastic transition in Si nanowires

Sheng Dai, Jiong Zhao, Lin Xie, Yuan Cai, Ning Wang, Jing Zhu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

49 Citations (Scopus)

Abstract

It is generally accepted that silicon nanowires (Si NWs) exhibit linear elastic behavior until fracture without any appreciable plastic deformation. However, the plasticity of Si NWs can be triggered under low strain rate inside the transmission electron microscope (TEM). In this report, two in situ TEM experiments were conducted to investigate the electron-beam (e-beam) effect on the plasticity of Si NWs. An e-beam illuminating with a low current intensity would result in the bond re-forming processes, achieving the plastic deformation with a bent strain over 40% in Si NWs near the room temperature. In addition, an effective method was proposed to shape the Si NWs, where an e-beam-induced elastic-plastic (E-P) transition took place.
Original languageEnglish
Pages (from-to)2379-2385
Number of pages7
JournalNano Letters
Volume12
Issue number5
DOIs
Publication statusPublished - 9 May 2012
Externally publishedYes

Keywords

  • e-beam irradiation
  • elastic-plastic transition
  • in situ TEM
  • mechanical properties
  • nanoshaping
  • Silicon nanowires

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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