关键词: 工程仿生学, 非光滑表面, 疏水表面, 植物叶表面, 数学模型

Abstract: The hydrophobic surfaces were divided into four kinds by analysing the hydrophobic characteristic of the nonsmooth surfaces of plants: superhydrophilic,midhydrophilic,midhydrophobic and superhydrophobic. In the view of energy balance, the energy transfer of the superhydrophilic and the superhydrophobic surfaces conform to Cassie model, and the energy transfer of the midhydrophilic and midhydrophobic surfaces conform to Wenzel model . Four typical nonsmooth surface prototypes were selected from many kinds of hydrophobic surfaces of plants, and the mathematical models for four kinds of ideal reticular hydrophobic surfaces (convex hull style, pit style, taper style , pillar style ) were established respectively, which will provide the theoretic base for the design and manufacture of the hydrophobic surface in antiadhesion of the engineering bionics.

Key words: engineering bionics, nonsmooth surface, hydrophobic surface, leaf surface of plant, mathematical model