【作者】 朱未琴； 封心建； 冯琳； 江雷；

【Author】 Weiqin Zhu, Xinjian Feng, Lin Feng, Lei Jiang* Group of Functional Interfacial Materials, Lab of Organic Solid, Institute of Chemistry, Chinese Academy of Science, 100080 Beijing

【机构】 中国科学院化学研究所有机固体实验室功能界面材料组；

【Abstract】 Wettability of solid surface is an important surface property. The realization of switchable wettability on solid surface is significant in meeting the demand in smart microfluidic devices. In the present work, well-aligned tin oxide nanorod films have been prepared via low temperature hydrothermal method. The wettability of the films can be switched between superhydrophobicity and superhydrophilicity by the alternation of UV-irradiation and dark storage. The films show superhydrophobicity with water contact angle of 154.0o before UV-irradiation, while turn to superhydrophilicity when exposed to UV-irradiation for 2 h. By keeping the films in dark for a period time, the wettability can return to the initial superhydrophobic state again. And the cycles can be repeated for several times. The study is promising in meeting the demand in smart microfluidic devices and extending the application of tin oxide films.更多还原