Radial breathing modes of multiwalled carbon nanotubes

Xinluo Zhao, Yoshinori Ando, Lu Chang Qin, Hiromichi Kataura, Yutaka Maniwa, Riichiro Saito

Research output: Contribution to journalArticlepeer-review

98 Citations (Scopus)

Abstract

A number of Raman-active peaks in the low-frequency region (100-600 cm-1) were observed for multiwalled carbon nanotubes (MWNTs). They were confirmed to be the radial breathing modes (RBMs) by using polarized Raman scattering. These RBMs originate from very thin innermost tubes (diameter, d =∼ 1 nm) included in MWNTs, and the RBM peak of the smallest carbon nanotubes (d = 0.4 nm) appears at 570 cm-1. It has also been found that the innermost-diameter distribution calculated from the RBM frequencies agrees well with the observations of high-resolution transmission electron microscopy. This provides a new Raman-spectroscopy-based method for the determination of the innermost diameter of MWNTs.

Original languageEnglish
Pages (from-to)169-174
Number of pages6
JournalChemical Physics Letters
Volume361
Issue number1-2
DOIs
Publication statusPublished - 2002 Jul 24
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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