Abstract: Via the solution approach and the low temperature hydrothermal method, large scale aligned one dimensional (1D) ZnO and TiO2 nanorod films were prepared, respectively. Combining their special surface micro-/macro-surface structures and their special surface ultraviolet sensitivity, reversible super-hydrophobic and super-hydrophilic properties were realized via UV light irradiation and dark storage alternating treatment. The mechanism for the reversible surface wettability was also discussed. This strategy can be extended to other stimuli-responsive surfaces with similar nanostructure, which is certainly significant for future industrial applications.

Key words: Zinc Oxide, Titanium Dioxide, Super-hydrophobicity, Super-hydrophilicity, Reversible