Abstract
Femtosecond laser-induced process, periodic nanostructures formation, for the creation of new functions on a titanium dioxide (TiO2) film is reviewed in this chapter. It has recently been reported that coating a TiO2 film on Ti plates may improve the biocompatibility of Ti. The periodic nanostructures have useful effects on the control of cell spreading. The scanning of femtosecond laser at wavelengths of 388 and 775 nm successfully produces periodic nanostructures on TiO2 film through the laser ablation process. The periodicity of nanostructures formed with those wavelengths are calculated using the surface plasmon polariton (SPP) model. The experimental results with those wavelengths were in the ranges of the calculated period, respectively. This suggests that the mechanism for the formation of periodic nanostructures on TiO2 film by femtosecond laser irradiation is due to the excitation of SPPs.
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