Petal effect: A superhydrophobic state with high adhesive force

被引：1664
作者：
Feng, Lin [1 ]
Zhang, Yanan [3 ]
Xi, Jinming [4 ]
Zhu, Ying [2 ]
Wang, Nue [2 ]
Xia, Fan [2 ]
Jiang, Lei [2 ]
机构：
[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
[2] Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
[3] Jilin Univ, Coll Chem, Changchun 130023, Peoples R China
[4] Natl Ctr Nanosci & Technol, Beijing 100080, Peoples R China
来源：
LANGMUIR | 2008年 / 24卷 / 08期
关键词：
D O I：
10.1021/la703821h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Hierarchical micropapillae and nanofolds are known to exist on the petals' surfaces of red roses. These micro- and nanostructures provide a sufficient roughness for superhydrophobicity and yet at the same time a high adhesive force with water. A water droplet on the surface of the petal appears spherical in shape, which cannot roll off even when the petal is turned upside down. We define this phenomenon as the "petal effect" as compared with the popular "lotus effect". Artificial fabrication of biomimic polymer films, with well-defined nanoembossed structures obtained by duplicating the petal's surface, indicates that the superhydrophobic surface and the adhesive petal are in Cassie impregnating wetting state.
引用
收藏
页码：4114 / 4119
页数：6
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