Résumé:

Combined resonant Raman spectroscopy, high resolution transmission electron spectroscopy (HRTEM) and electron diffraction experiments on the same suspended (free-standing) individual carbon nanotubes is an efficient method to determine unambiguously the intrinsic features of phonons in these nano systems. In this talk, a special attention is focusing on multi–walled carbon nanotubes, mainly on double-walled carbon nanotubes (DWNT), because they provide a unique model system for studying the role of the coupling between the layers on the phonons.