title: From natural to biomimetic: The superhydrophobicity and the contact time.
abstract: The superhydrophobicities and the contact time of lotus leaf and reed leaf were investigated. The results indicated that both lotus leaf and reed leaf have good superhydrophobic properties, and the water contact time was 12.7 and 14.7 ms on the surface of lotus leaf and reed leaf, respectively. Surface structure plays a key role in the different contacting times. Homogeneous distribution of papillae on the surface of lotus leaf was more helpful to reduce the contact time than anisotropic groove-shape on the surface of reed leaf. Based on the bionics coupling theory, the bionics sample possessing similar lotus-leaf-like surface structure on the aluminum alloy was designed and fabricated successfully. The water contact angle was about 153 ± 2°, sliding angle less than 5°, and the water contact time was 13.4 ms on the surface of bionics sample, which presented excellent superhydrophobic property, and achieved the aim of bionic design. Microsc. Res. Tech. 79:712-720, 2016. © 2016 Wiley Periodicals, Inc.
authors.affiliation: Key Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun, 130025, China.|State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun, 130025, China.
authors.forename: Yun-Hong
authors.initials: YH
authors.lastname: Liang
authors.affiliation: Key Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun, 130025, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Peng
authors.affiliation: Key Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun, 130025, China.
authors.forename: Xiu-Juan
authors.initials: XJ
authors.lastname: Li
authors.affiliation: School of Mechatronical Engineering, Changchun University of Science and Technology, Changchun, 130022, China.
authors.forename: Jin-Kai
authors.initials: JK
authors.lastname: Xu
authors.affiliation: Key Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun, 130025, China.|State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun, 130025, China.
authors.forename: Zhi-Hui
authors.initials: ZH
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun, 130025, China.
authors.forename: Lu-Quan
authors.initials: LQ
authors.lastname: Ren
mesh_terms: D032701:Biomimetics; D057927:Hydrophobic and Hydrophilic Interactions; D000070116:Lotus; D008956:Models, Chemical; D018515:Plant Leaves / Q000737:chemistry*; D013997:Time Factors; D014867:Water / Q000737:chemistry*; D017155:Wettability
chemical_list: D014867:Water
keywords: biomimetic; contact angle; contact time; lotus effect; superhydrophobicity