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VERFAHREN ZUR ERZEUGUNG LOKAL FUNKTIONELLER PHOTOKATALYTISCHER BEREICHE UND DAMIT ERHAELTLICHE GEGENSTAENDE

Production of photo-catalytic structures in titanium oxide-containing layer involves heating, resulting in photo-hydrophilic and photolytic capabilities.
 
: Vergoehl, M.; Neumann, F.; Thomas, M.; Hunsche, B.; Rickers, C.

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Frontpage ()

DE 2001-10162681 A: 20011219
EP 2002-799062 AW: 20021219
WO 2002-EP14564 A: 20021219
EP 1458654 A1: 20040922
C03C0017
German
Patent, Electronic Publication
Fraunhofer IST ()

Abstract
WO2003051787 A UPAB: 20030719 NOVELTY - The inactive layer is locally heated to effect modification, thus causing transition to a photo-catalytic form and confer photo-hydrophilicity. In addition or alternatively, photolytic capability is exhibited towards organic materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an arrangement, in which the titanium-oxide containing layer has catalytically-active and -inactive areas. USE - To induce photo-hydrophilicity or photolytic effect in a layer including titanium dioxide, used to exploit photo-induced anti-bacterial effect in the layer; in a spotting procedure (all claimed), and also for use in various biotechnological procedures. ADVANTAGE - Catalytic activity results from exposure to light of appropriate wavelength. The layer is preferably porous, and associated with a substrate. Known processes may be used to produce the layer, e.g. vacuum coating. Magnetron sputtering at 100-250 deg. C can also conveniently cause the modification. Diverse artificial or natural lighting sources induce the photo-catalytic effect. The effect is suppressed in darkness, and renewed on re-exposure.

: http://publica.fraunhofer.de/documents/N-44854.html