Mechanical coupled vibrations in an individual double-walled carbon nanotube

被引：17
|
作者：
Boutahir, Mourad [1 ]
Rahmani, Abdelhai [1 ]
Chadli, Hassan [1 ]
Rahmani, Abdelali [1 ]
机构：
[1] Univ Moulay Ismail, FSM FLSH FPE, Lab Etud Mat Avances & Applicat LEM2A, BP 11201, Zitoune 50000, Meknes, Morocco
来源：
EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS | 2016年 / 74卷 / 02期
关键词：
D O I：
10.1051/epjap/2015150329
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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.
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页数：3
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