NDLI: Wall-to-wall stress induced in (6,5) semiconducting nanotubes by encapsulation in metallic outer tubes of different diameters: A resonance Raman study of individual C<sub>60</sub>-derived double-wall carbon nanotubes

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Wall-to-wall stress induced in (6,5) semiconducting nanotubes by encapsulation in metallic outer tubes of different diameters: A resonance Raman study of individual C₆₀-derived double-wall carbon nanotubes

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Nanoscale Vol - 2 Issue - 2

Nanoscale Vol -1

Wall-to-wall stress induced in (6,5) semiconducting nanotubes by encapsulation in metallic outer tubes of different diameters: A resonance Raman study of individual C₆₀-derived double-wall carbon nanotubes

Content Provider	Royal Society of Chemistry (RSC)
Author	Endo, Morinobu Dresselhaus, Mildred S. Villalpando-Paez, Federico Terrones, Mauricio Farhat, Hootan Muramatsu, Hiroyuki Kim, Yoong Ahm
Copyright Year	2010
Abstract	We measure resonant Raman scattering from 11 individual C60-derived double-wall carbon nanotubes all having inner semiconducting (6,5) tubes and various outer metallic tubes. The Raman spectra show the radial breathing modes (RBM) of the inner and the outer tubes to be simultaneously in resonance with the same laser energy. We observe that an increase in the RBM frequency of the inner tubes is related to an increase in the RBM frequency of the outer tubes. The Raman spectra also contain a sharp G− feature that increases in frequency as the nominal diameter of the outer metallic tubes decreases. Finally, the one-phonon second-order D-band mode shows a two-way frequency splitting that decreases with decreasing nominal wall-to-wall distance. We suggest that the stress which increases with decreasing nominal wall-to-wall distance is responsible for the hardening that is observed in the frequencies of the RBM, D and G− modes of the inner (6,5) semiconducting tubes.
Starting Page	406
Ending Page	411
Page Count	6
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	2
Issue Number	3
Journal	Nanoscale
DOI	10.1039/b9nr00268e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Carbon nanotube Raman scattering Laser Raman Resonance RBM
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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