Chinese Optics Letters, 2021, 19 (8): 082201, Published Online: Apr. 20, 2021
Fabrication of microholes array on titanium foil by a femtosecond laser and a surface’s wettability switching Download: 617次
Abstract
In this study, an effective method is proposed for controlling a titanium foil surface’s wettability. A microholes array series is fabricated on the surface of titanium foil by a femtosecond laser under different laser energy and pulse number. The changes of the titanium surface’s morphology are characterized. When placed in a darkroom with high-temperature treatment and immersed in alcohol under UV irradiation, respectively, the femtosecond laser treated surfaces display switchable wettability. It is demonstrated that the changing between Ti-OH and Ti-O prompts the transformation between superhydrophilic and superhydrophobic. Compared with existing reports, the switchable wetting cycle is shortened to 1.5 h. The functional surfaces with switchable wettability have potential applications in oil–water separation and water mist collection.
Cong Wang, Bo Liu, Zhi Luo, Kaiwen Ding, Ji’an Duan. Fabrication of microholes array on titanium foil by a femtosecond laser and a surface’s wettability switching[J]. Chinese Optics Letters, 2021, 19(8): 082201.