Controlled manipulation and in situ mechanical measurement of single co nanowire with a laser-induced cavitation bubble

Xiaohu Huang, Pedro A. Quinto-Su, S. Roberto Gonzalez-Avila, Tao Wu*, Claus Dieter Ohl

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

The flow induced by a single laser-induced cavitation bubble is used to manipulate individual Co nanowires. The short-lived (<20 μs) bubble with a maximum size of 45 μm is created in an aqueous solution with a laser pulse. Translation, rotation, and radial motion of the nanowire can be selectively achieved by varying the initial distance and orientation of the bubble with respect to the nanowire. Depending on the initial distance, the nanowire can be either pushed away or pulled toward the laser focus. No translation is observed for a distance further than approximately 60 μm, while at closer distance, the nanowire can be bent as a result of the fast flow induced during the bubble collapse. Studying the dynamics of the shape recovery allows an estimation of the Young's modulus of the nanowire. The low measured Young's modulus (in a range from 9.6 to 13.0 GPa) of the Co nanowire is attributed to a softening effect due to structural defects and surface oxidation layer. Our study suggests that this bubble-based technique allows selectively transporting, orienting, and probing individual nanowires and may be exploited for constructing functional nanodevices.

Original languageEnglish (US)
Pages (from-to)3846-3851
Number of pages6
JournalNano Letters
Volume10
Issue number10
DOIs
StatePublished - Oct 13 2010

Keywords

  • Nanowire manipulation
  • Young's modulus
  • cavitation bubble
  • nanowire bending

ASJC Scopus subject areas

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

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