The Effect of Ion-Beam Treatment on TiO₂ Coatings Deposited on Polycarbonate Substrates

摘要

The effect of an Ar plasma treatment on polycarbonate substrates was investigated using coatings produced by reactive ion-beam assisted sputtering. The typical pressure used during sputtering was about Torr. After the Ar plasma treatment, the contact angle of a water droplet was reduced from to and then further decreased to with the addition of oxygen into the chamber. The surface of the polycarbonate substrate hanged from hydrophobic to hydrophilic with these treatments and revealed its changing nano-scale roughness. The films on the treated surface showed various colors and periodic ordering dependant on the film thickness due to optical interference.