Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume 40, Issue 7, Pages 2386-2389Publisher
ELSEVIER
DOI: 10.1016/j.physe.2007.11.008
Keywords
single-walled carbon nanotubes; multi-walled carbon nanotubes; Raman spectroscopy
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In this report, the Raman spectra of single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) were studied with different laser excitation energies (325, 514.5 and 1064 nm). The experimental results provide that the relative Raman intensities to the tangential stretching mode (G-mode) of the disorder mode (DM) for SWCNTs (I-D/I-G) hardly decrease with increasing laser excitation energy, but I-D/I-G of MWCNTs decreases with slope 0.3eV(-1) with increasing laser excitation energy. This may provide important information for the difference of DM between SWCNTs and MWCNTs. (c) 2008 Elsevier B.V. All rights reserved.
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