This paper investigates the generation of self-organized surface structures on amorphous alloys by vortex femtosecond laser pulses. The scanning electron microscope characterizations show that the as-formed structures...This paper investigates the generation of self-organized surface structures on amorphous alloys by vortex femtosecond laser pulses. The scanning electron microscope characterizations show that the as-formed structures are periodic ripples, aperiodic ripples, and ‘coral-like＇ structures. Optimal conditions for forming these surface structures are determined in terms of pulses number at a given pulse energy. The applicable mechanism is suggested to interpret the formation and evolution of the ＇coral-like＇ structures.展开更多
基金Project supported by the Science and Technology Key Program of Shandong Province,China (Grant No. 2008GG10004020)China Postdoctoral Science Foundation (Grant No. AUGA41001348)+1 种基金Heilongjiang Province Postdoctoral Science Foundation(Grant No. AUGA1100074)the Program of Excellent Team in the Harbin Institute of Technology,China
文摘This paper investigates the generation of self-organized surface structures on amorphous alloys by vortex femtosecond laser pulses. The scanning electron microscope characterizations show that the as-formed structures are periodic ripples, aperiodic ripples, and ‘coral-like＇ structures. Optimal conditions for forming these surface structures are determined in terms of pulses number at a given pulse energy. The applicable mechanism is suggested to interpret the formation and evolution of the ＇coral-like＇ structures.
