Luo Wenxin, Xu Jingfu, Li Gang, Niu Gaoqiang, Ng Kar Wei, Wang Fei, Li Mingjie
School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China.
Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
Langmuir. 2022 Jun 14;38(23):7129-7136. doi: 10.1021/acs.langmuir.2c00264. Epub 2022 Jun 4.
Transparent superhydrophobic coatings with mechanical stability, self-cleaning function, and anti-reflective property have drawn much attention due to the great potential in a variety of real-world applications. In this work, we develop an ingenious approach to construct micropatterned transparent superhydrophobic coatings with a multilayer structure (water contact angle ∼153.6°, sliding angle ∼3.2°). A micropatterned ultraviolet-cured resist frame facilitates durability, while the modified silica nanoparticles, which are housed within the micro-cavities and bonded by an epoxy-based adhesive, impart superhydrophobicity. The micropatterned multilayer surface could endure sandpaper abrasion while maintaining satisfactory hydrophobicity. The prepared surfaces also retain the excellent water repellency after water jet impact, acid submerging, and mechanical bending, suggesting that they are sustainable in the case of adverse conditions and can be integrated with objects with non-flat geometries. Further, the superhydrophobic coatings exhibit an anti-reflection property while preserving high transparency. Taken together, we envision that the design strategies here can offer a practicable route to produce transparent superhydrophobic coatings for diverse outdoor applications.
具有机械稳定性、自清洁功能和抗反射性能的透明超疏水涂层因其在各种实际应用中的巨大潜力而备受关注。在这项工作中，我们开发了一种巧妙的方法来构建具有多层结构的微图案化透明超疏水涂层（水接触角约为153.6°，滑动角约为3.2°）。微图案化的紫外光固化抗蚀剂框架提高了耐久性，而容纳在微腔内并通过环氧基粘合剂粘结的改性二氧化硅纳米颗粒赋予了超疏水性。微图案化的多层表面在经受砂纸磨损时仍能保持令人满意的疏水性。制备的表面在水喷射冲击、酸浸泡和机械弯曲后也能保持优异的拒水性，这表明它们在不利条件下具有可持续性，并且可以与非平面几何形状的物体集成。此外，超疏水涂层在保持高透明度的同时还具有抗反射性能。综上所述，我们设想这里的设计策略可以为生产用于各种户外应用的透明超疏水涂层提供一条可行的途径。
