摘要
The aim of this paper is to characterize the microrelief and wettability of lotus leaf, waterlily leaf and biomimic ZnO surface with potential engineering applications. The characterizations of morphologies reveal that the top surface of lotus leaf is textured with 4 μm - 10 μm size protrusions and 70 nm - 100 nm nanorods, while the top surface of waterlily leaf is textured with wrinkle and decorated with concave coin-shaped geometric structure. The wettabilities of water and oil on lotus leaf and waterlily leaf under different surroundings were systematically researched. It is indeed interesting that the leaves of the two typical plants both living in the aquatic habitats possess opposite wettabilities： superhydrophobicity for top surface of lotus leaf （156°） while quasi-superhydrophilicity for top surface of waterlily leaf （15°）. We have succeeded in fabricating the superhy- drophobic ZnO nanorods semiconductor material （151°） employing a simple method inspired by the detailed structures and chemical composition of lotus leaf.
The aim of this paper is to characterize the microrelief and wettability of lotus leaf, waterlily leaf and biomimic ZnO surface with potential engineering applications. The characterizations of morphologies reveal that the top surface of lotus leaf is textured with 4 μm - 10 μm size protrusions and 70 nm - 100 nm nanorods, while the top surface of waterlily leaf is textured with wrinkle and decorated with concave coin-shaped geometric structure. The wettabilities of water and oil on lotus leaf and waterlily leaf under different surroundings were systematically researched. It is indeed interesting that the leaves of the two typical plants both living in the aquatic habitats possess opposite wettabilities： superhydrophobicity for top surface of lotus leaf （156°） while quasi-superhydrophilicity for top surface of waterlily leaf （15°）. We have succeeded in fabricating the superhy- drophobic ZnO nanorods semiconductor material （151°） employing a simple method inspired by the detailed structures and chemical composition of lotus leaf.
基金
This work is supported by the National Nature Science Foundation of China （Grant Nos. 11172301 and 21203217）, the “Funds for Distinguished Young Scien- tists” of Hubei Province （No. 2012FFA002）, the“Western Light Talent Culture” Project, the Co-joint Project of Chinese Academy of Sciences, and the “Top Hundred Talents” Program of Chinese Academy of Sciences.
