Inspired by the fog harvesting ability of the spider net and the interphase wetting surface of Namib desert beetles, we designed a kind of special bioinspired hybrid wetting surface on a Cu mesh by combining polydimethylsiloxane (PDMS) and graphene (G). A surface containing hydrophobic and superhydrophobic areas is prepared by a combination of laser etching and ultrasonic vibration. Thus, this as-prepared hybrid wetting surface can quickly drive tiny water droplets toward more wettable regions, which makes a great contribution to the improvement of collection efficiency. Moreover, the PDMS/G surface not only is tolerant to many stresses such as excellent anti-corrosion ability, anti-UV exposure and oil contamination, but also shows self-healing simply by burning the worn areas, which thus endows the surface with tunable-wettability change between flame treatment and abrasive wear. This study offers a novel insight into the design of burned healed materials with interphase wettability that may enhance the fog collection efficiency in engineering liquid harvesting equipment and realizes renewable materials in situ cheaply and rapidly by processes that can be easily scaled and automated.

中文翻译：

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具有生物启发性的结构化石墨烯表面，具有可调节的润湿性和高耐磨性，可有效收集雾†

受蜘蛛网的除雾能力和纳米布沙漠甲虫的相间润湿表面的启发，我们通过结合聚二甲基硅氧烷（PDMS）和石墨烯（G）设计了一种特殊的生物启发的杂化润湿表面。通过结合激光蚀刻和超声振动来制备包含疏水和超疏水区域的表面。因此，这种制备的混合湿润表面可以迅速将微小的水滴推向更可润湿的区域，这对提高收集效率做出了巨大贡献。此外，PDMS / G表面不仅可以承受许多压力，例如出色的抗腐蚀能力，抗紫外线辐射和油脂污染，而且还可以通过燃烧磨损区域而表现出自我修复的能力，因此使表面在火焰处理和磨料磨损之间具有可调的润湿性变化。该研究为相间可湿性的已修复愈合材料的设计提供了新颖的见解，可提高工程液体收集设备中的雾收集效率并实现可再生材料通过可轻松缩放和自动化的过程，可以廉价，快速地就地进行现场安装。