Résumé:

Combined Resonant Raman spectroscopy, high resolution transmission electron spectroscopy and electron diffraction experiments on the same suspended (free-standing) individual carbon nanotubes is the ultimate method to determine unambiguously the intrinsic features of phonons in these nano systems. By using this approach, the effect of coupling between nanotubes on the phonons of two carbon-based nanostructures, namely: dimers of single-walled carbon nanotubes and double-walled carbon nanotubes (DWNT), is investigated. Both these systems provide unique models for studying the role of the coupling at the nanoscale.