超短パルスレーザ加工による表面周期構造とその応用

抄録

Irradiation of ultrashort laser pulses with energy intensity near processing threshold can create fine periodic structures. High-speed forming of more than one million ripples per second can be achieved by scanning irradiation with a single laser light path. Laser texturing adopting the periodic structures has a wide variety of surface functions. This article describes forming principles of the periodic structures, and surface functions of the structures related to tribological characteristics such as friction/wear reduction and wettability control.