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Radial breathing mode of carbon nanotubes subjected to axial pressure.

Authors :
Lei XW
Ni QQ
Shi JX
Natsuki T
Source :
Nanoscale research letters [Nanoscale Res Lett] 2011 Aug 11; Vol. 6 (1), pp. 492. Date of Electronic Publication: 2011 Aug 11.
Publication Year :
2011

Abstract

In this paper, a theoretical analysis of the radial breathing mode (RBM) of carbon nanotubes (CNTs) subjected to axial pressure is presented based on an elastic continuum model. Single-walled carbon nanotubes (SWCNTs) are described as an individual elastic shell and double-walled carbon nanotubes (DWCNTs) are considered to be two shells coupled through the van der Waals force. The effects of axial pressure, wave numbers and nanotube diameter on the RBM frequency are investigated in detail. The validity of these theoretical results is confirmed through the comparison of the experiment, calculation and simulation. Our results show that the RBM frequency is linearly dependent on the axial pressure and is affected by the wave numbers. We concluded that RBM frequency can be used to characterize the axial pressure acting on both ends of a CNT.

Details

Language :
English
ISSN :
1556-276X
Volume :
6
Issue :
1
Database :
MEDLINE
Journal :
Nanoscale research letters
Publication Type :
Academic Journal
Accession number :
21834961
Full Text :
https://doi.org/10.1186/1556-276X-6-492