title: Gas-driven ultrafast reversible switching of super-hydrophobic adhesion on palladium-coated silicon nanowires.
abstract: A gas-driven ultrafast adhesion switching of water droplets on palladium-coated Si nanowire arrays is demonstrated. By regulating the gas-ambient between the atmosphere and H2 , the super-hydrophobic adhesion is repeatedly switched between water-repellent and water-adhesive. The capability of modulating the super-hydrophobic adhesion on a super-hydrophobic surface with a non-contact mode could be applicable to novel functional lab-on-a-chip platforms.
authors.affiliation: Nanobio Device Laboratory, School of Electrical and Electronic Engineering, Yonsei University, 134 Shinchon-Dong, Seodaemun-Gu, Seoul, Republic of Korea.
authors.forename: Jungmok
authors.initials: J
authors.lastname: Seo
authors.forename: Soonil
authors.initials: S
authors.lastname: Lee
authors.forename: Heetak
authors.initials: H
authors.lastname: Han
authors.forename: Hwae Bong
authors.initials: HB
authors.lastname: Jung
authors.forename: Juree
authors.initials: J
authors.lastname: Hong
authors.forename: Giyoung
authors.initials: G
authors.lastname: Song
authors.forename: Suk Man
authors.initials: SM
authors.lastname: Cho
authors.forename: Cheolmin
authors.initials: C
authors.lastname: Park
authors.forename: Wooyoung
authors.initials: W
authors.lastname: Lee
authors.forename: Taeyoon
authors.initials: T
authors.lastname: Lee
mesh_terms: D000268:Adhesiveness; D000327:Adsorption; D003460:Crystallization / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005740:Gases / Q000737:chemistry; D006859:Hydrogen / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D008422:Materials Testing; D044085:Microfluidics / Q000379:methods*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010165:Palladium / Q000737:chemistry*; D010316:Particle Size; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
chemical_list: D005740:Gases; D014867:Water; D010165:Palladium; D006859:Hydrogen; D012825:Silicon
keywords: Si nanowires; gas-driven volume expansion; palladium (Pd); reversible water adhesion switching; super-hydrophobicity