At present, collecting water directly from the atmosphere has become an effective means to solve the growing shortage of fresh water. Inspired by the structures of trichomes (hairs) of Sarracenia to capture fog and transport water, a series of different high–low rib-like hierarchical texture surfaces were prepared based on the laser method. These surfaces have gradient superwetting and adhesion because of the differences in subsequent preparation methods. In addition, this work discusses the effect of the above performance differences on the efficiency of fog collection and the surface condensation characteristics during fog collection. The results show that the surface of the laser-prepared sample with the mixing unit combination has more efficient fog collection efficiency and droplet removal rate. After 30 min, the amount of drip measured in the atmospheric environment is 8.4 times that of the polished surface. This indicates that the multihierarchical textured surface and superhydrophobicity are essential for improving the droplet removal rate and coagulation efficiency.

中文翻译：

---

具有层次纹理和可湿性梯度驱动水收集的生物启发性集成表面

目前，直接从大气中收集水已成为解决日益严重的淡水短缺问题的有效手段。受瓶子草线毛（头发）结构的启发为了捕获雾并输送水，基于激光方法准备了一系列不同的高低肋状分层纹理表面。由于后续制备方法的不同，这些表面具有梯度超湿和附着力。此外，这项工作讨论了以上性能差异对雾收集效率和雾收集过程中表面凝结特性的影响。结果表明，混合单元组合的激光制备样品的表面具有更有效的除雾效率和液滴去除率。30分钟后，在大气环境中测得的滴水量是抛光表面的8.4倍。