Synthesis of multilayered composite nanotube heterostructure; SiC-SiO, C-SiO, and C-SiC-SiO nanotubes

Taguchi, Tomitsugu; Shamoto, Shinichi  

Three types of composite nanotube heterostructures (two double-layered and one triple-layered structure) are synthesized by simple heat treatment, forming SiC-SiO, C-SiO, and C-SiC-SiO composite coaxial nanotubes. These multilayered composite nanotubes consist of several components with different electrical properties, for example, metal, semiconductor and insulator components. In particular, C-SiC-SiO triple-layered nanotubes with metallic, semiconducting and insulating layers are synthesized for the first time. These multilayered nanotubes can be expected to find applications in nanoscale heterostructure electronic and optical devices.