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Fabrication and Application of TiO 2 ‐Based Superhydrophilic–Superhydrophobic Patterns on Titanium Substrates for Offset Printing
Author(s) -
Nakata Kazuya,
Nishimoto Shunsuke,
Kubo Atsushi,
Tryk Donald,
Ochiai Tsuyoshi,
Murakami Taketoshi,
Fujishima Akira
Publication year - 2009
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.200900005
Subject(s) - superhydrophilicity , materials science , fabrication , titanium , monolayer , photocatalysis , substrate (aquarium) , nanotechnology , offset printing , inkwell , chemical engineering , contact angle , composite material , chemistry , catalysis , metallurgy , engineering , organic chemistry , medicine , alternative medicine , oceanography , pathology , geology
Light print : TiO 2 ‐based superhydrophilic–superhydrophobic patterns were fabricated on titanium substrates. The fabricated substrate functions as an offset printing plate and is renewable through initialization by UV irradiation and resurfacing. This new method offers a new, resource‐saving, environmentally friendly printing method. SAM=self‐assembled monolayer.A fabrication process for superhydrophilic–superhydrophilic patterns on titanium substrates prepared through a combination of an ink‐jet technique and site‐selective decomposition of a self‐assembled monolayer (SAM) by a TiO 2 photocatalyst under UV irradiation is described. We demonstrate that the prepared titanium substrate is applicable as an offset printing plate with high resolution (133 and 150 lines per inch). Furthermore, the superhydrophilic–superhydrophobic patterns on the substrate can be deposited repeatedly after elimination of the patterns by photocatalytic decomposition of TiO 2 under UV irradiation. A second printed image with the renewed substrate showed no significant difference in image quality compared with the initial image.