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

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

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

By applying optical near-field effects in a laser-assisted chemical vapor deposition (LCVD) process, self-aligned growth of ultra-short single-walled carbon nanotubes (SWNTs) was realized in a well controlled manner at a relatively low substrate temperature due to the nanoscale heating enhancement induced by the optical near-field effects. Bridge structures containing single suspending SWNT channels were successfully fabricated. Ultra-sharp tip-shaped metallic electrodes were used as optical antennas in localizing and enhancing the optical fields. Numerical simulations using High Frequency Structure Simulator (HFSS) reveal significant enhancement of electrical fields at the metallic electrode tips under laser irradiation, which induces localized heating at the tips. Numerical simulations were carried out to optimize SWNT growth conditions, such as electrode tip sharpness and film thickness, for maximal enhancement of electrical near field and localized heating.

Original languageEnglish (US)
Pages (from-to)151-156
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume1142
StatePublished - 2009
Event2008 MRS Fall Meeting - Boston, MA, United States
Duration: Dec 1 2008Dec 4 2008

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Self-aligned growth of single-walled carbon nanotubes using optical near-field effects'. Together they form a unique fingerprint.

Cite this