Abstract: It has been well demonstrated that there are two kinds of surface morphologies, including binary structures (namely micro-and nanostructures) and less common unitary structures (such as micro-line structures), which play crucial roles in endowing the plant leaves with superhydrophobic properties. In this work, five superhydrophobic plant leaves in nature are introduced, by means of the combination of surface morphology and wettability with the aid of Scanning Electron Microscopy (SEM) and contact angle measurement. The results indicate that either the binary structures or the unitary structures enable the construction of a superhydrophobic surface, and the latter shows likely better mechanics compared with the former according to the corresponding theory. This research aims at introducing two different types of corresponding morphologies of superhydrophobic plant leaves.

Key words: superhydrophobic, plant leaves, binary structure, micro-line structure, bionic