title: Unidirectional Wetting Properties on Multi-Bioinspired Magnetocontrollable Slippery Microcilia.
abstract: Here, a smart fluid-controlled surface is designed, via the rational integration of the unique properties of three natural examples, i.e., the unidirectional wetting behaviors of butterfly's wing, liquid-infused "slippery" surface of the pitcher plant, and the motile microcilia of micro-organisms. Anisotropic wettability, lubricated surfaces, and magnetoresponsive microstructures are assembled into one unified system. The as-prepared surface covered by tilted microcilia achieves significant unidirectional droplet adhesion and sliding. Regulating by external magnet field, the directionality of ferromagnetic microcilia can be synergistically switched, which facilitates a continuous and omnidirectional-controllable water delivery. This work opens an avenue for applications of anisotropic wetting surfaces, such as complex-flow distribution and liquid delivery, and extend the design approach of multi-bioinspiration integration.
authors.affiliation: School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, 300072, P. R. China.
authors.forename: Moyuan
authors.initials: M
authors.lastname: Cao
authors.affiliation: Research Institute of Petroleum Exploration and Development, PetroChina, Beijing, 100191, P. R. China.
authors.forename: Xu
authors.initials: X
authors.lastname: Jin
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Peng
authors.affiliation: Technical Institute of Physics and Chemistry, Key Laboratory of Bio-Inspired Materials and Interfacial Science, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors.forename: Cunming
authors.initials: C
authors.lastname: Yu
authors.affiliation: Technical Institute of Physics and Chemistry, Key Laboratory of Bio-Inspired Materials and Interfacial Science, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors.forename: Kan
authors.initials: K
authors.lastname: Li
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Kesong
authors.initials: K
authors.lastname: Liu
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.|Technical Institute of Physics and Chemistry, Key Laboratory of Bio-Inspired Materials and Interfacial Science, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Jiang
mesh_terms: D016880:Anisotropy; D013499:Surface Properties; D017155:Wettability
keywords: bioinspired materials; liquid infused; magnetocontrollable; microcilia