RESEARCH ON THE SUPERHYDROPHOBIC MECHANISM OF THE MECHANICAL SURFACE WITH MULTI-SCALE STRUCTURES

摘要

It's an important research subject of application surface science to design and fabricate surfaces with a micro and nano scale periodic structures. This text stimulates the micro geological structures of the lotus surface. On the precondition that the micro structures are with a profile of parabola, two essential factors on the superhydrophobicity are studied and the mathematic models are founded here. The influences of different surface geological parameters and the nano-structure on the surface superhydrophobicity are analyzed and discussed. A conclusion is drawn that on a given hydrophobic ( θ_Y=110° > 90° ) surface, super-hydrophobicity is only decided by the geological parameters of the surface rough structures and meanwhile, the nano rough structure further enhances the surface super-hydrophobicity. This text analyzes the surface super-hydrophobicity and powerfully complements the traditional Wenzel and Cassie wetting formulas, providing the theoretical basis for the design and manufacture of the super-hydrophobicity with the rough structures.