Abstract Submitted to the NANOTUBE'02 Workshop:

We report about the stability and the properties of novel SiO^x-nanotubes and SiO^x-Carbon composite nanotubes. Tubular structures of SiO^x (x<2) are constructed by a conformal mapping of two-dimensional layer structures onto a surface of a cylinder. The stability of these tubes is investigated using density-functional based methods. Furthermore, possible decorations of carbon nanotubes with SiO^x-layers are discussed. The different possibilities for the SiO-C interface in such nanocomposites are analysed. The results of the theoretical studies are compared with data of recent experimental investigations for such systems.