Ultrafast laser induced surface modification in absence of non-thermal melting and evaporation

Details Ultrafast laser induced surface modification in absence of non-thermal melting and evaporation Ultrafast laser induced surface modification in absence of non-thermal melting and evaporation

2010-07-30

arxiv.org/abs/1007.5415v2

Physics

Condensed Matter

Materials Science

Scientific paper

The present paper elucidates the physical mechanism that accounts for the principal/primary stages of the structuring process taking place upon irradiation of a conductive solid with multiple identical femtosecond laser pulses, based on the consideration of a hybrid theoretical model. Heat transfer along with hydrodynamics simulations demonstrate that it is possible to create morphology change conditions by solely exploiting capillary effects, in the absence of either non-thermal melting or evaporation. Simulation results, confirmed by experiments, reveal the intermediate surface modification stage acting as a predecessor of microcones formation.

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