Identification of inner and outer shells of double-wall carbon nanotubes using high-pressure Raman spectroscopy

D. Christofilos, J. Arvanitidis, G. A. Kourouklis, S. Ves, T. Takenobu, Y. Iwasa, H. Kataura

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The high-pressure Raman response of double-wall carbon nanotubes (DWCNTs) in the radial breathing mode (RBM) frequency region can be used for the identification of both the inner and their respective outer tubes. A simple anharmonic model of this system demonstrates that the pressure response of the inner tube in a DWCNT is uniquely defined by the inner-outer tube spacing. Consequently, a plot of the normalized pressure coefficients of the inner tube RBM frequencies as a function of their ambient pressure frequency serves as a map which allows the identification of unknown DWCNTs. The present experimental results form the basis of such a plot.

Original languageEnglish
Article number113402
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number11
Publication statusPublished - 2007 Sep 7
Externally publishedYes


ASJC Scopus subject areas

  • Condensed Matter Physics

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