Xinjian Feng Jin Zhai and Lei Jiang*

TiO₂ nanorod films with special micro- and nanoscale hierarchical surface structures have been prepared. A remarkable controllable surface wettability that shows reversible superhydrophobicity / superhydrophilicity which is a challenge in surface chemistry is observed on this inorganic oxide nanorod film. The cooperation of the hierarchical surface microstructures the orientation of the crystal planes and the surface photosensitivity are considered to be responsible for this behavior.

Angew. Chem. Int. Ed. 2005 44 5115－5118