Abstract
Ultra-short pulse (USP) Laser Induced Periodic Surface Structures (LIPSS) namely ripples, micro-grooves and spikes [1] have received considerable attention since they can modify some key surface properties like wettability, colour and tribology, increasing the material’s internal value [2]. Nevertheless, the complete understanding of the physical mechanisms leading to LIPSS formation is still under debate. Even so, at repetition rate values as high as several kHz, the fluence Φ and the overall energy irradiated over a unit surface (dose) have been identified as the physical parameters playing a major role in the structures generation process [3][4][5].
© 2017 IEEE
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