Journal
APPLIED SURFACE SCIENCE
Volume 255, Issue 12, Pages 6221-6225Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2009.01.084
Keywords
TiO2 photocatalyst; Superhydrophobic-superhydrophilic; Self-assembled monolayers; Ink-jet technique; Offset printing
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A superhydrophobic-superhydrophilic pattern was prepared on an anodized Al plate by a new fabrication process. The process consists of five key steps: (1) TiO2 coating of the plate, (2) surface modi. cation with self-assembled monolayers (SAMs), (3) formation of aqueous UV light-resistant ink patterns by an ink-jet technique, (4) photocatalytic decomposition of SAMs and surface conversion to the superhydrophilic state and (5) removal of the aqueous ink patterns by water washing. It is particularly noteworthy that the wettability pattern can be quickly formed on the plate, without the use of a photomask. The fabricated superhydrophobic-superhydrophilic pattern is shown to be applicable to offset printing. (C) 2009 Elsevier B.V. All rights reserved.
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