title: Rutile phase n- and p-type anodic titania nanotube arrays with square-shaped pore morphologies.
abstract: Rutile-phase TiO2 nanotube arrays without broken walls were formed by annealing of anodically formed nanotubes in a propane flame at 650 °C and in air at 750 °C. An unusual morphological transformation was observed from the ellipsoidal pore-shapes of titania nanotubes grown in aqueous electrolyte to a square-shaped pore structure subsequent to the anneals. 750 °C annealed nanotubes were found to be lightly p-type, rare in TiO2.
authors: Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G2 V4, Canada. pkar1@ualberta.ca.
authors: Piyush
authors: P
authors: Kar
authors: Yun
authors: Y
authors: Zhang
authors: Samira
authors: S
authors: Farsinezhad
authors: Arash
authors: A
authors: Mohammadpour
authors: Benjamin D
authors: BD
authors: Wiltshire
authors: Himani
authors: H
authors: Sharma
authors: Karthik
authors: K
authors: Shankar