Guo Yunjie, Li Jie, Li Xinchi, Chen Jiawei, Qi Jinhe
Department of Mechanical Engineering, School of Computer and Artificial Intelligence, Beijing Technology and Business University, Beijing 100048, China.
College of Mechanical and Energy Engineering, Beijing University of Technology, Beijing 100124, China.
ACS Appl Mater Interfaces. 2025 Aug 13;17(32):46431-46441. doi: 10.1021/acsami.5c11553. Epub 2025 Jul 30.
Freshwater shortage is a growing problem, and inspired by the ultrafast directional water transport structure of the Sarracenia trichomes and the excellent lubrication effect of SLIPS, bionic hierarchical structured surfaces with wettability patterns were prepared based on laser processing combined with dip and oil-infused modification. The prepared surfaces were tested for sliding performance, water impact, corrosion resistance, and fog collection, and the relationships between the surface structure, wettability, sliding properties, and droplet directional condensation, coalescence, absorption, and directional water transport, as well as their influences on the fog collection performance, were investigated by analyzing the fog collection process. In addition, the optimization direction of surfaces with wettability patterns to alleviate water collection obstacles and improve fog collection efficiency is given. The method offers simplicity and high fog collection efficiency. This study provides a good reference for the development and preparation of fog collection surfaces.
淡水短缺是一个日益严重的问题，受瓶子草毛状体的超快定向水传输结构和超滑液固界面（SLIPS）优异的润滑效果启发，基于激光加工结合浸涂和注油改性制备了具有润湿性图案的仿生分级结构表面。对制备的表面进行了滑动性能、水冲击、耐腐蚀性和雾收集测试，并通过分析雾收集过程研究了表面结构、润湿性、滑动性能与液滴定向凝结、聚结、吸收和定向水传输之间的关系，以及它们对雾收集性能的影响。此外，给出了具有润湿性图案的表面缓解积水障碍和提高雾收集效率的优化方向。该方法具有简单性和高雾收集效率。本研究为雾收集表面的开发和制备提供了良好的参考。
