Laser induced selective removal of metallic carbon nanotubes

M. Mahjouri-Samani, Y. S. Zhou, W. Xiong, Y. Gao, M. Mitchell, Y. F. Lu

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

Distinguishing between carbon nanotubes (CNTs) according to their individual electronic properties is of significant importance for developing CNT-based electronics and devices. In this study, selective removal of metallic CNTs from CNT mixtures on silicon substrates was investigated using controlled laser irradiation. Free electron movement and eddy currents are induced within the metallic CNTs by the strong electric field and optical near-field effects caused by the laser irradiation. Selective heating of metallic CNTs in air results in selective removal of metallic CNTs when the laser fluence and wavelength are properly selected. Through this process, metallic nanotubes are successfully removed from the CNT mixtures. This technique provides an efficient single-step approach for selective removal of metallic CNTs from CNT mixtures.

Original languageEnglish (US)
Article number495202
JournalNanotechnology
Volume20
Issue number49
DOIs
StatePublished - Nov 25 2009

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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    Mahjouri-Samani, M., Zhou, Y. S., Xiong, W., Gao, Y., Mitchell, M., & Lu, Y. F. (2009). Laser induced selective removal of metallic carbon nanotubes. Nanotechnology, 20(49), [495202]. https://doi.org/10.1088/0957-4484/20/49/495202