G. D. Tsibidis, M. Barberoglou, P. A. Loukakos, E. Stratakis, C. Fotakis
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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http://arxiv.org/abs/1007.5415
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