Cactus Stem Inspired Cone-Arrayed Surfaces for Efficient Fog Collection
Cactus Stem Inspired Cone-Arrayed Surfaces for Efficient Fog Collection
复制标题
受仙人掌茎启发的圆锥体 - 用于高效收集雾气的阵列表面
DOI：
10.1002/adfm.201402229
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发表时间：
2014-11-26
影响因子：
19
通讯作者：
Jiang, Lei
中科院分区：
文献类型：
--
作者：
Ju, Jie;Yao, Xi;Jiang, Lei
随着世界人口的不断增加和全球工业的快速发展，清洁的水变得越来越稀缺。因此，将雾中的潜水转化为主要的可用水的方法，即雾收集，变得非常需要。此前，已证明仙人掌 O. Microdasys 具有一个集成的雾收集系统，该系统源自仙人掌茎上均匀分布的刺和毛状体簇。据报道，仙人掌茎上的簇间密布着球果，这些球果也能够有效地收集雾中的水。受这些锥体的启发，使用一种结合机械穿孔和模板复制技术的简单方法，聚二甲基硅氧烷（PDMS）锥体阵列被制造成不同的排列方式，并且六边形排列的锥体阵列被证明是更有效的，因为交错的锥体周围的湍流场更强，并且水滴沿着每个锥体快速定向运动。这项研究开辟了有效收集水的新途径，也可能为除尘和烟雾去除的研究提供线索，这在全世界引起了越来越多的关注。
With the increasing world population and the rapid development of the global industry, clean water is becoming scarcer and scarcer. Means of translating latent water in fog to dominant available water, i.e., fog collection, therefore becomes highly desirable. Previously, it was demonstrated that the cactus O. Microdasys has an integrated fog collection system arising from the evenly distributed clusters of spines and trichomes on the cactus stem. Here, it is reported that the intersite of the clusters on the cactus stem is densely covered with cones, which are also capable of collecting water from fog efficiently. Inspired by these cones, using a simple method combining mechanical perforating and template replica technology, polydimethylsiloxane (PDMS) cone arrays are fabricated with different arrangements and the one in hexagonal arrangement proves to be more efficient due to the more turbulent flow filed around the staggered cones and the rapid directional movement of water drops along each cone. This investigation opens up new avenue to collect water efficiently and may also provide clues to research about dust filtering and smog removal, which is attracting increasing attention worldwide.