title: Hybrid contact and interfacial adhesion on well-defined periodic hierarchical pillars.
abstract: Herein, we describe a simple fabrication procedure for creating artificial hierarchical micro/nanopillars on silicon substrates that allows an effective, precise control of the interfacial adhesion and surface hydrophobicity. These well-defined hierarchical micro/nanostructures have four possible wetting states: Cassie-Cassie (C-C), Cassie-Wenzel (C-W), Wenzel-Cassie (W-C) and Wenzel-Wenzel (W-W). By controlling the critical height of the micro/nanopillars, it is possible to fabricate hierarchical micro/nanostructures in these four states. Thus, the hierarchical superhydrophobic surfaces proposed and fabricated in this study are promising for mimicking either lotus leaves with low adhesion or rose petals with high adhesion.
authors.affiliation: Research Center for Applied Sciences, Academia Sinica, 128, Section 2, Academia Road, Nankang, Taipei 115, Taiwan.
authors.forename: Zong-Han
authors.initials: ZH
authors.lastname: Yang
authors.forename: Fan-Ching
authors.initials: FC
authors.lastname: Chien
authors.forename: Chiung-Wen
authors.initials: CW
authors.lastname: Kuo
authors.forename: Di-Yen
authors.initials: DY
authors.lastname: Chueh
authors.forename: Peilin
authors.initials: P
authors.lastname: Chen
mesh_terms: D000268:Adhesiveness; D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances