|
Title
|
|
|
|
Influence of packing on the vibrational properties of infinite and finite bundles of carbon nanotubes
|
|
|
Author
|
|
|
|
|
|
|
Abstract
|
|
|
|
| The quantitative analysis of the vibrational properties of carbon nanotubes is a key issue for the interpretation of Raman experiments. In particular. a reliable characterization of the atomic structure of single-wall carbon nanotubes produced under various conditions is mainly based on the interpretation of low-frequency (100-300 cm(-1)) Raman spectra. In the present work. we analyze the influence of the packing of the tubes on these low-frequency modes. We find that the low-frequency spectra of crystals of single-wall carbon nanotubes present two intense Raman modes instead of a single fully symmetric A(1g). mode characteristic of isolated tubes. The second mode has a non-negligible intensity for crystals formed with nanotubes of radii larger than 7 Angstrom. For finite number of tubes in a bundle, two breathinglike intense modes appear as a specific signature. Finally, our simulation for inhomogenous bundles made of a large number of tubes does not reveal any specific signature of the individual tubes in the low-frequency Raman spectra. |
|
|
|
Language
|
|
|
|
English
|
|
|
Source (journal)
|
|
|
|
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
|
|
|
Publication
|
|
|
|
Lancaster, Pa
:
2001
|
|
|
ISSN
|
|
|
|
1098-0121
[print]
1550-235X
[online]
|
|
|
DOI
|
|
|
|
10.1103/PHYSREVB.64.205403
|
|
|
Volume/pages
|
|
|
|
64
:20
(2001)
, 10 p.
|
|
|
Article Reference
|
|
|
|
205403
|
|
|
ISI
|
|
|
|
000172464600071
|
|
|
Medium
|
|
|
|
E-only publicatie
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
|
Full text (open access)
|
|
|
|
|
|