Journal
APPLIED PHYSICS LETTERS
Volume 85, Issue 20, Pages 4744-4746Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1818739
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An enhanced Raman signal is observed from individual suspended single-wall carbon nanotubes (SWNTs) and from isolated SWNTs grown on an n-doped polycrystalline silicon film used in standard silicon processing. The radial breathing modes of the Raman spectra taken from suspended SWNTs exhibit narrow linewidths, which indicate a relatively unperturbed environment for suspended SWNTs. Clear Raman signals from intermediate frequency modes in the frequency range from 520 to 1200 cm(-1) are presented, which might allow a detailed study of the phonon band structure of individual SWNTs. (C) 2004 American Institute of Physics.
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