材料科学
飞秒
气流
激光器
纳米技术
光学
机械工程
物理
工程类
作者
Pengyu Yang,Kai Yin,Xinghao Song,Lingxiao Wang,Qinwen Deng,Jiao Pei,Yuchun He,Christopher J. Arnusch
出处
期刊:Nano Letters
[American Chemical Society]
日期:2024-03-04
标识
DOI:10.1021/acs.nanolett.3c05042
摘要
Liquid manipulation is essential for daily life and modern industry, and it is widely used in various fields, including seawater desalination, microfluidic robots, and biomedical engineering. Nevertheless, the current research focuses on the manipulation of individual droplets. There are a few projects for water film management. Here, we proposed a facile method of wind-triggered water film self-sculpturing based on a heterogeneous wettability surface, which is achieved by the femtosecond laser direct writing technology and femtosecond laser deposition. Under the conditions of various airflow velocities and water film thicknesses, three distinct behaviors of the water film were analyzed. As a result, when the water film thickness is lower than 4.9 mm, the self-sculpture process will occur until the whole superhydrophobic surface dewetting. Four potential applications are demonstrated, including encryption, oil containers, reconfigurable patterning, and self-splitting devices. This work provides a new approach for manipulating a water film of fluid control engineering.
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