Abstract
Surface periodic structures can be formed on various kinds of materials using linearly polarized femtosecond laser pulses with low fluence that is slightly above the ablation threshold. This paper summarizes novel surface characteristics of femtosecond laser-induced periodic structures. The periodic structures show remarkable effects for example, reducing a material's friction coefficient or improving adhesion between diamond-like carbon (DLC) film and its metal substrate. Furthermore, the periodic structures enhance cellular sensibility. Osteoblasts orient themselves along the lines of periodic structures.
