title: Highly ordered titania nanotube arrays with square, triangular, and sunflower structures.
abstract: Focused ion beam guided anodization enables the fabrication of TiO(2) nanotubes in a square arrangement with square cell shapes and in a graphite lattice arrangement with triangular cell shapes, which is impossible through self-organized anodization. TiO(2) nanotubes in sunflower patterns are also obtained, which demonstrates the great potential of guided anodization in fabricating asymmetrical nanotubes.
authors.affiliation: Department of Materials Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA.
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
authors.forename: Kathy
authors.initials: K
authors.lastname: Lu
authors.forename: Jeffrey Allen
authors.initials: JA
authors.lastname: Geldmeier