Self-aligned growth of single-walled carbon nanotubes using optical near-field effects

W. Xiong, Y. S. Zhou, M. Mahjouri-Samani, W. Q. Yang, K. J. Yi, X. N. He, S. H. Liou, Y. F. Lu

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Self-aligned growth of ultra-short single-walled carbon nanotubes (SWNTs) was realized by utilizing optical near-field effects in a laser-assisted chemical vapor deposition (LCVD) process. By introducing the optical near-field effects, bridge structures containing single suspended SWNT channels were successfully fabricated through the LCVD process at a relatively low substrate temperature. Raman spectroscopy and I-V analyses have been carried out to characterize the SWNT-bridge structures. Numerical simulations using a high-frequency structure simulator revealed that significant enhancement of local heating occurs at metallic electrode tips under laser irradiation; it is about one order of magnitude higher than that in the rest of the electrodes. This technique suggests a novel approach to in situ low-temperature fabrication of SWNT-based devices in a precisely controlled manner, based on the nanoscale heating enhancement induced by the optical near-field effects.

Original languageEnglish (US)
Article number025601
JournalNanotechnology
Volume20
Issue number2
DOIs
StatePublished - Jan 14 2009

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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