Department of Mechanical and Aerospace Engineering, University of Texas at Arlington, 500 W. First Street, Woolf Hall 226, Arlington, Texas 76019, USA.
Langmuir. 2013 Jun 25;29(25):7715-25. doi: 10.1021/la401193c. Epub 2013 Jun 12.
It is reported that a lotus surface has hybrid micro/nanostructures (i.e., small micropillars are covered with nanopillars), which make a water drop easily roll off from the lotus surface. However, we have recently found that, in addition to nanopillars and small micropillars, there also exist sparsely distributed large micropillars on the leaf surface of The President lotus. Accordingly, in this work, we examined the effects of these large micropillars on the wetting properties of The President through four types of wetting experiments: pressing tests, measurement of tilt and contact angles, condensation, and evaporation. For the purpose of comparison, we also did the same experiments on the leaf surfaces of another two lotuses, Carolina Queen and Chawan Basu, which only have hybrid micro/nanostructures. The President, Carolina Queen, and Chawan Basu are three different lotus varieties.
据报道，荷叶表面具有混合微/纳米结构（即，小的微柱体上覆盖有纳米柱体），这使得水滴很容易从荷叶表面滚落。然而，我们最近发现，除了纳米柱体和小的微柱体外，在王莲的叶片表面还存在稀疏分布的大微柱体。因此，在这项工作中，我们通过四种润湿实验：压痕实验、倾斜角和接触角测量、冷凝和蒸发实验，研究了这些大微柱体对王莲润湿性能的影响。为了进行比较，我们还对另两种只有混合微/纳米结构的王莲（卡罗莱纳王莲和茶碗莲）的叶片表面进行了相同的实验。王莲、卡罗莱纳王莲和茶碗莲是三种不同的莲花品种。
