The surface-enhanced Rman scattering (SERS) effect results in an enahncement of the Raman signal for molecules attached to metallic nanostructures by many orders of magnitude, thereby allowing Raman spectroscopy to probe single molecules~(1,2). To the extent that a single wall carbon nanotube is a single molecule, previously reported results on single molecules gives us the exciting possibility of studying the Raman spectra of individual carbon nanotubes.
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