Article Dans Une Revue Physical Review B: Condensed Matter (1978-1997) Année : 1995

Temperature-dependent vibrational spectra of carbon nanotubes

Pham V. Huong
  • Fonction : Auteur
R. Cavagnat
  • Fonction : Auteur

Résumé

The complete Raman spectra of carbon tubules at various temperatures are compared with those of graphite and fullerene C60. The band at 1470 cm-1 as well as those in the range 100-600 cm-1 in tubules attest to the presence of pentagon-containing hemispherical surfaces on both the end caps and the inside terminations of the cylindrical structures of nanotubes. Raman microspectroscopy is also used to observe a temperature-dependent and reversible shift of the stretching frequencies corresponding to changes in the carbon-carbon distances in tubules. This could result in a temperature dependence of the diameters of the multilayer carbon nanotubes and could ultimately lead to a tuning method for structure-sensitive properties, such as the band gaps of individual tubes.

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Dates et versions

hal-04944605 , version 1 (13-02-2025)

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Pham V. Huong, R. Cavagnat, P.M. Ajayan, O. Stephan. Temperature-dependent vibrational spectra of carbon nanotubes. Physical Review B: Condensed Matter (1978-1997), 1995, 51 (15), pp.10048-10051. ⟨10.1103/PhysRevB.51.10048⟩. ⟨hal-04944605⟩
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