title: A supercritical carbon dioxide plasma process for preparing tungsten oxide nanowires.
abstract: A supercritical carbon dioxide (CO(2)) plasma process for fabricating one-dimensional tungsten oxide nanowires coated with amorphous carbon is presented. High-frequency plasma was generated in supercritical carbon dioxide at 20 MPa by using tungsten electrodes mounted in a supercritical cell, and subsequently an organic solvent was introduced with supercritical carbon dioxide into the plasma. Electron microscopy and Raman spectroscopy investigations of the deposited materials showed the production of tungsten oxide nanowires with or without an outer layer. The nanowires with an outer layer exhibited a coaxial structure with an outer concentric layer of amorphous carbon and an inner layer of tungsten oxide with a thickness and diameter of 20-30 and 10-20 nm, respectively.
authors.affiliation: Department of Environmental Science for Industry, Faculty of Agriculture, Ehime University, 3-5-7 Tarumi Matsuyama, Ehime 790-8566, Japan. a-kawa@agr.ehime-u.ac.jp
authors.forename: Ayato
authors.initials: A
authors.lastname: Kawashima
authors.forename: Shinfuku
authors.initials: S
authors.lastname: Nomura
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Toyota
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Takemori
authors.forename: Shinobu
authors.initials: S
authors.lastname: Mukasa
authors.forename: Tsunehiro
authors.initials: T
authors.lastname: Maehara