Reversible Surface Wettability Conversion of ZnO Film
The ZnO films were fabricated by chemical oxidation of metallic Zn in a 5% N, N-dimethyl- formamide (DMF) aqueous solution at 95°C for 24h. After modified with octadecyltrichlorosilane (OTS), a superhydrophobic ZnO film was obtained. The superhydrophobic film turned into a superhydrophilic one after UV irradiation, which can be recovered through being placed in the dark.
Wei Pan and Jianghong Gong
H. Q. Liu et al., "Reversible Surface Wettability Conversion of ZnO Film ", Key Engineering Materials, Vols. 434-435, pp. 420-422, 2010