https://doi.org/10.1051/epjap/2015150329
Regular Article
Mechanical coupled vibrations in an individual double-walled carbon nanotube*
Laboratoire d’Etude des Matériaux Avancés et Applications (LEM2A), Université Moulay Ismail, FSM-FLSH-FPE, BP 11201, Zitoune, 50000 Meknes, Morocco
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Received:
29
June
2015
Revised:
16
October
2015
Accepted:
19
October
2015
Published online:
3
May
2016
Abstract
In this paper we calculate the Raman spectra of different double-walled carbon nanotubes (DWCNTs) by using the spectral moments method. Using a convenient Lennard-Jones expression of the van der Waals intermolecular interaction between the inner and outer tubes, the optimized structures of DWCNT are derived. We found that the C-C bond length in DWCNT is depending on the metallic (M) or semiconducting (Sc) character of the inner and outer nanotubes. We show that the radial breathing-like modes (RBLM) of DWCNT are characterized by concerted inner and outer wall motions. Comparison with Raman spectra measurements is given.
Contribution to the topical issue “Materials for Energy Harvesting, Conversion and Storage (ICOME 2015) – Elected submissions”, edited by Jean-Michel Nunzi, Rachid Bennacer and Mohammed El Ganaoui
© EDP Sciences, 2016
