The filling of carbon nanotubes (CNTs) with inorganic crystal as well as organic molecules or fullerenes has been widely investigated over the last years [1]. Filled Multi-Walled CNTs and, first of all, Single-Walled CNTs have become the most promising hybrid-nanomaterials for many applications because of the strong interaction between the outer carbon shell and the inner material and the imposed 1D dimension, capable to modify the atomic structure of both the filling and the nanotube [2]. Structural characterization by TEM is hampered by SWCNTs very small dimension and by its relative instability under the electron beam. Notwithstanding the outer carbon shell may act as a protecting environment, allowing the observation of the structure and of the dynamic behaviour of the contained molecules, in conventional 200 keV imaging, beam electrons are capable of displacing carbon atoms from the graphene …