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Surface enhanced Raman scattering from multiwalled carbon nanotubes at low temperatures

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2 Author(s)
Gohil, Smita ; Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai, Maharashtra 400 005, India ; Ghosh, Shankar

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3374862 

We report temperature dependent Raman spectra of multiwalled carbon nanotubes deposited as dilute dispersions on surface enhanced Raman scattering active substrate. At low temperature, i.e, below 30 K both the tangential and the disorder mode acquire additional spectral features which are otherwise absent in the room temperature spectra. Further, we observe that the surface enhancement effect is more for modes involving motion of atoms in the direction perpendicular to the substrate which is consistent with the surface selection rules. These experiments provide access to certain spectral features of multiwalled carbon nanotubes which are otherwise very difficult to see.

Published in:

Applied Physics Letters  (Volume:96 ,  Issue: 14 )

Date of Publication:

Apr 2010

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