| Autor: |
Yang P; Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China., Yin K; Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China.; The State Key Laboratory of High Performance and Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China., Song X; Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China., Wang L; Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China., Deng Q; Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China., Pei J; Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China., He Y; Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China., Arnusch CJ; Department of Desalination and Water Treatment, Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus, Midreshet Ben-Gurion 8499000, Israel. |
| Abstrakt: |
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. |
