Certain plant leaves, such as the lotus leaf, are known to be superhydrophobic due to the hierarchical structures on the leaf surfaces. In this paper, two kinds of superhydrophobic plants leaves with hierarchical structured surface, including aged lotus and loropetalum chinense leaves, were introduced. Further, the surface structural models were established for the introduced leaves corresponding to their surface micromorphologies. More importantly, the theoretical modes for predicting sliding angles of liquid droplets on the introduced leaf surfaces were formulated. In addition, the role of surface parameters in determining the superhydrophobicity of hierarchical structured leaves was demonstrated effective. The results of this paper could be used as a guidance for designing desired superhydrophobic property of hierarchical surfaces.

中文翻译：

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分层结构超疏水表面上水滴滑动角的研究

由于叶子表面的分级结构，某些植物叶子，例如荷叶，已知是超疏水的。本文介绍了两种具有层次结构表面的超疏水植物叶片，即老荷叶和金莲花叶。此外，为引入的叶片建立了与其表面微形态相对应的表面结构模型。更重要的是，制定了预测液滴在引入的叶片表面上的滑动角的理论模式。此外，表面参数在确定分层结构叶子的超疏水性方面的作用被证明是有效的。本文的结果可用作设计分层表面所需的超疏水特性的指导。