Observation of localized strains on vertically grown single-walled carbon nanotube forests via polarized Raman spectroscopy

Content Provider	Scilit
Author	Park, June Heo, Kwang Hong, Seunghun Min, Yo-Sep Seong, Maeng-Je
Copyright Year	2013
Description	Journal: Nanotechnology Vertically grown single-walled carbon nanotube (V-SWCNT) forests, synthesized by water-assisted plasma-enhanced chemical vapor deposition, were studied using polarized micro-Raman spectroscopy. Among three different sections (root, center and end) along the vertical growth direction, the degree of V-SWCNT alignment was highest in the center section. Raman frequency red-shifts up to 7?and 13?cm?1, for RBM and G-band, respectively, were observed in the center section, with respect to the Raman frequencies measured in the root and the end sections. Raman frequency downshift and concurrent linewidth broadening of the G-band, revealing a localized strain, were also observed in the center section. The existence of a localized strain in the center section of the V-SWCNT was further confirmed by observing a strong polarization anisotropy of up to 8?cm?1 in the G-band Raman frequency for different polarized Raman scattering configurations at the same probed spot.
Related Links	http://iopscience.iop.org/0957-4484/25/2/025705/pdf/0957-4484_25_2_025705.pdf
ISSN	09574484
e-ISSN	13616528
DOI	10.1088/0957-4484/25/2/025705
Journal	Nanotechnology
Issue Number	2
Volume Number	25
Language	English
Publisher	IOP Publishing
Publisher Date	2013-12-12
Access Restriction	Open
Subject Keyword	Journal: Nanotechnology Raman Spectroscopy Carbon Nanotube Raman Scattering Plasma Enhanced Chemical Vapor Deposition Raman Frequency Center Section Localized Strain
Content Type	Text
Resource Type	Article
Subject	Chemistry Nanoscience and Nanotechnology Mechanics of Materials Mechanical Engineering Bioengineering Electrical and Electronic Engineering