抄録
In order to investigate sustainability of hydrophilicity in the dark, life of photo inductive wettability generated by ultraviolet ray irradiation for anatase-type titanium dioxide film was obtained. The films were prepared by using cylindrical magnetron gas flow sputtering (CM-GFS) source with pure titanium pipe target. Irradiation by ultraviolet ray tremendously enhanced wettability for short time. When the time decay of wettability was studied, the photo inductive wetting sufficiently kept the high wetting of anatase-type titanium dioxide (TiOx) film. The life of photo inductive wetting was a week. To discuss the change in surface condition, wettability change was applied for the extended Howkes theory analysis. Although the wettability decay was explained by decrease in the hydrogen bond strength, sustainability of hydrophilicity in the dark on the photo inductive wetting was explained by maintaining the increase of dipole interaction effect. Based on the results, difference between photo catalytic reaction and photo inductive effects were discussed for anatase-type titanium dioxide film.
