Fog Collection on a Bio-inspired Topological Alloy Net with Micro-/ Nanostructures
作者：Xin Li, Yufang Liu, Hu Zhou, Chunlei Gao, Diansen Li,* Yongping Hou,* and Yongmei Zheng*
關鍵字：fog collection
論文來源：期刊
具體來源：ACS Appl. Mater. Interfaces 2020, 12, 5065?5072
發表時間：2020年
Because of the scarcity of freshwater resources, fog collection as one of the effective methods to solve this issue has attracted widespread concern. Inspired by several natural creatures with the capability to collect water from fog, the bio-inspired water-harvesting materials have aroused considerable attention and been widely developed. Inspired by the directional water droplets transportation to the apex on both shorebirds beaks and wheat awns, the bio-inspired topological alloy net with a V-shaped asymmetric geometry in its mesh was designed for fog collecting. Then, micro-/nano-hierarchical structures were modified on the surface of the netting wire via the cathodic electrodeposition method. Thus, the bio-inspired topological alloy net with micro/nanostructures was fabricated successfully. Through the integration of topological geometry and surface microstructure, not only the water-collection rate is improved by efficient drainage along the designated pathways, but also the issue of mesh clogging is resolved. In addition, a theoretical model was constructed to reveal the mechanism, especially the resultant force arising from the V-shaped structure. This work provides insight into the development of novel fog-collecting materials, which has potential applications in other fifields, such as liquid transportation, microfluidics, and interface science.