Femtosecond laser direct weaving bioinspired superhydrophobic/hydrophilic micro-pattern for fog harvesting. (February 2022)

• Record Type: Journal Article
• Authors: Zhang, Jingzhou; Zhang, Yuanchen; Yong, Jiale; Hou, Xun; Chen, Feng
• Is Part Of: Optics & laser technology. Volume 146(2022)
• Publication Date: 2022-02
• Subjects: Fog harvesting -- Femtosecond laser -- Superhydrophobic -- Desert beetle; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2021.107593
• Languages: English
• ISSNs: 0030-3992

Abstract

Highlights: After femtosecond laser ablation, TiO2 microstructures were formed on Ti surfaces. A hybrid Ti surface was prepared by a femtosecond laser without chemical modification. The as-prepared Ti surface enhanced the water-collection efficiency by nearly 100%. Abstract: In this paper, we directly built hybrid superhydrophobic/hydrophilic micro-patterns on Ti surfaces via femtosecond laser microfabrication. After dark storage, superhydrophobic TiO2 micro/nanostructures were formed on laser-scanned areas while un-scanned areas remained intrinsic hydrophilicity. The as-prepared Ti surface enhanced the water-collection efficiency by nearly 100% compared to the untreated one. Furthermore, the femtosecond laser direct weaved micro-pattern exhibited a fast processing speed and the whole process did not need any chemical modification. Our study provides a novel strategy to ameliorate the water shortage in the future.