title: Unidirectional Wetting of Liquids on "Janus" Nanostructure Arrays under Various Media.
abstract: We report the unidirectional wetting behavior of liquids (water and oil) on Janus silicon cylinder arrays (Si-CAs) under various media (air, water, and oil). The Janus cylinders were prepared by chemical modification of nanocylinders with different molecules on two sides. Through adjusting surface energies of the modified molecules, the as-prepared surfaces could control the wetting behavior of different types of liquids under various media. We discuss the regularity systematically and propose a strategy for preparing anisotropic wetting surfaces under arbitrary media. That is, to find two surface modification molecules with different surface energies, one of the molecules is easy to be wetted by the liquid under the corresponding media, while the other one is difficult. Additionally, by introducing thermal-responsive polymer brushes onto one part of Janus Si-CAs, the surfaces show thermal-responsive anisotropic wetting property under various media. We believe that due to the excellent unidirectional wettability under various media, the Janus surfaces could be applied in water/oil transportation, oil-repellent and self-cleaning coatings, water/oil separation, microfluidics, and so on.
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China.
authors.forename: Peng
authors.initials: P
authors.lastname: Ge
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China.
authors.forename: Shuli
authors.initials: S
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China.
authors.forename: Wendong
authors.initials: W
authors.lastname: Liu
authors.affiliation: Research Center for Molecular Science and Engineering, Northeastern University , Shenyang 110004, P. R. China.
authors.forename: Tieqiang
authors.initials: T
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China.
authors.forename: Nianzuo
authors.initials: N
authors.lastname: Yu
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China.
authors.forename: Shunsheng
authors.initials: S
authors.lastname: Ye
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China.
authors.forename: Huaizhong
authors.initials: H
authors.lastname: Shen
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China.
authors.forename: Yuxin
authors.initials: Y
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China.
authors.forename: Junhu
authors.identifier: 0000-0001-9100-6608
authors.initials: J
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun 130012, P. R. China.
authors.forename: Bai
authors.identifier: 0000-0002-3873-075X
authors.initials: B
authors.lastname: Yang