Mapping of individual single-walled carbon nanotubes using nano-raman spectroscopy

X. N. He, K. J. Yi, Y. F. Lu

Research output: Contribution to journalConference article

Abstract

Scanning Tunneling Microscope (STM) based Tip-enhanced Raman Spectroscopy (TERS) was used to map Singlewalled Carbon Nanotubes (SWCNTs) dispersed on silicon surfaces. A software program developed with Labviewtradplatform was used to perform the mapping. STM tips made of gold (Au) were fabricated by electrochemical etching and employed in our TERS system to realize nanoscale spatial resolutions and obtain enhanced signals. Mapping of the SWCNTs was also performed using a micro-Raman system. It was found that the SWCNTs could be well resolved by the TERS system but could not be resolved by the micro-Raman system. Further analysis shows that, the ultimate resolution of the TERS system can reach around 30 nm, while the micro-Raman system shows a resolution around 5μ.

Original languageEnglish (US)
Article number72020E
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume7202
DOIs
Publication statusPublished - May 25 2009
EventLaser-based Micro- and Nanopackaging and Assembly III - San Jose, CA, United States
Duration: Jan 28 2009Jan 29 2009

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Keywords

  • Au tip
  • Micro- Raman
  • Near-field Scanning Raman microscopy (NSRM)
  • Single-Walled Carbon Nanotubes (SWCNTs)
  • Tip-enhanced Raman Spectroscopy (TERS)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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