Artificial lotus leaves superhydrophobic hierarchical structure was obtained on epoxy resin substrates by improved molding method and zinc oxide hydrothermal growth method. The process of this method is simple and low-cost

and the natural micro-structure can be quickly reproduced on the artificial surface. The molding method is effectively used for lotus and rice leave with protuberant microstructures. And the effect of ZnO growth liquid concentration on nanostructure was also studied. Then

in order to study the influence of microstructures at different scale sizes on the hydrophobic properties of the surface

smooth surface

nanostructure surface and microstructure lotus replica surface were fabricated. the hydrophobic properties of these surfaces were measured. The date shows that the rough structure can improve the hydrophobicity of the surface

and the micro-nano hierarchical structure is more helpful to the formation of superhydrophobicity on the surface. When droplets contact with the surface in Cassie state

the larger the proportion of air on the contact area

the smaller the contact angle and the smaller the sliding angle on the surface.