Interaction between concentric Tubes in DWCNTs

Abstract

A detailed investigation of the Raman response of the inner tube radial breathing modes (RBMs) in double-wall carbon nanotubes is reported. It revealed that the number of observed RBMs is two to three times larger than the number of possible tubes in the studied frequency range. This unexpected increase in Raman lines is attributed to a splitting of the inner tube response. It is shown to originate from the possibility that one type of inner tube may form in different types of outer tubes and the fact that the inner tube RBM frequency depends on the diameter of the enclosing tube. Finally, a comparison of the inner tube RBMs and the RBMs of tubes in bundles gave clear evidence that the interaction in a bundle is stronger than the interaction between inner and outer tubes.

6 pages, 7 figures, submitted to Eur. Phys. J. B

References in corpus (4)

• van der Waals interaction in nanotube bundles : consequences on vibrational modes
• Low temperature fullerene encapsulation in single wall carbon nanotubes: synthesis of N@C${}_{60}$@SWCNT
• Diameter selective characterization of single-wall carbon nanotubes
• The Raman response of double wall carbon nanotubes

Cited by in corpus (7)

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• Moiré-induced Vibrational Coupling in Double Walled Carbon Nanotubes
• Computational study of the shift of the G band of double-walled carbon nanotubes due to interlayer interactions
• Highly unperturbed inner tubes in CVD grown double-wall carbon nanotubes
• The Raman response of double wall carbon nanotubes
• Recent advances in the internal functionalization of carbon nanotubes: synthesis, optical, and magnetic resonance studies