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Single nanotube Raman spectroscopy.

M S Dresselhaus1, G Dresselhaus, A Jorio

  • 1Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. millie@mgm.mit.edu

Accounts of Chemical Research
|December 18, 2002
PubMed
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Single nanotube spectroscopy reveals crucial structural details, including precise (n, m) determination, using resonant Raman spectra. The radial breathing mode is key for identifying specific carbon nanotubes, supported by other Raman bands.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Spectroscopy

Background:

  • Single-wall carbon nanotubes (SWCNTs) possess unique electronic and mechanical properties.
  • Characterizing individual SWCNTs is essential for understanding their behavior and applications.
  • Resonant Raman spectroscopy is a powerful, non-destructive technique for probing SWCNT structure.

Purpose of the Study:

  • To review the structural information obtainable from resonant Raman spectra of isolated single-wall carbon nanotubes.
  • To highlight the utility of single-nanotube spectroscopy for determining the (n, m) indices of individual tubes.
  • To discuss the significance of this technique for future carbon nanotube research.

Main Methods:

  • Analysis of resonant Raman spectra from isolated single-wall carbon nanotubes.

Related Experiment Videos

  • Focus on the radial breathing mode (RBM) for (n, m) determination.
  • Examination of G-band, D-band, and G'-band features for corroboration.

    • Main Results:

    • Resonant Raman spectroscopy provides detailed structural information, including precise (n, m) assignment for individual SWCNTs.
    • The radial breathing mode exhibits high sensitivity to the (n, m) indices, enabling accurate identification.
    • Other Raman modes (G, D, G') show diameter- and chirality-dependent behaviors that corroborate (n, m) assignments.

    Conclusions:

    • Single-nanotube spectroscopy, particularly using resonant Raman scattering, is vital for characterizing individual SWCNTs.
    • The (n, m) determination of carbon nanotubes is reliably achieved through analysis of specific Raman modes.
    • This technique holds significant promise for advancing future research and applications of carbon nanotubes.