title: Microscale patterning of hydrophobic/hydrophilic surfaces by spatially controlled galvanic displacement reactions.
abstract: In this letter, we report the design and fabrication of different metal patterns for the realization of spatially controlled hydrophobic/hydrophilic regions with micrometer resolution. The fabrication procedure, based on a combination of lithographic techniques and wet-chemistry reactions (namely, spontaneous Galvanic displacement reactions) is reliable, undemanding, and highly versatile, allowing the achievement of precise spatial control along with the use of a wide variety of different materials.
authors.affiliation: National Nanotechnology Laboratory of CNR-INFM, IIT Research Unit, Via per Arnesano, 73100 Lecce, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Rizzello
authors.forename: S Shiv
authors.initials: SS
authors.lastname: Shankar
authors.forename: D
authors.initials: D
authors.lastname: Fragouli
authors.forename: A
authors.initials: A
authors.lastname: Athanassiou
authors.forename: R
authors.initials: R
authors.lastname: Cingolani
authors.forename: P P
authors.initials: PP
authors.lastname: Pompa
mesh_terms: D006046:Gold / Q000737:chemistry; D057927:Hydrophobic and Hydrophilic Interactions; D008832:Microchemistry; D049329:Nanostructures / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry; D012834:Silver / Q000737:chemistry; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water; D012834:Silver; D006046:Gold; D012825:Silicon