Germanium-oxide-coated carbon nanotubes.
An ultrathin coating of individual multi-wall carbon nanotubes with germanium oxide was developed. Coated carbon nanotubes were prepared by in situ gelation of tetramethoxy germanium, forming an amorphous germanium oxide layer. The resulting germanium oxide/carbon nanotube nanocables were characterized by transmission electron microscopy (TEM), TEM/energy-dispersive x-ray spectroscopy, x-ray photoelectron spectroscopy (XPS) and current-voltage measurements. The approximately 10 nm thin germanium oxide layer provides excellent electrical insulating properties for individual carbon nanotubes.
International Center for Materials Nanoarchitectonics and Biomaterials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan. pumera.martin@nims.go.jp
Martin
M
Pumera
Hideo
H
Iwai
Yuji
Y
Miyahara