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Microstructure evolution and nucleation dynamics of TiO 2 nanostructural thin films on (001) LaAlO 3 substrates grown by the polymer-assisted deposition technique have been systematically studied with the increase of annealing temperature. Epitaxial anatase TiO 2 phase with nanometer-scaled periodic surface strip patterns can be achieved when the sample is annealed at 900 ° C. It is also found that the morphology of the surface pattern is related to the ramping rate of the temperature during annealing. The formation of the surface strip pattern can be considered to be associated with the diffusion limit growth dynamics. The surface pattern structure was found to strongly affect the hydrophilic properties of the thin films.

Yuan Lin, Bo Zeng, Yanda Ji, Weizheng Liang, Dayu Feng, Min Gao, Yin Zhang, Xinxin Chen, Bin Chen and Chonglin Chen

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