Molecular dynamics simulation of structural evolution in crystal and amorphous alloys under ultrafast laser irradiation
Résumé
Surface structuring of both amorphous and crystals materials may find interest in many leading technological applications. The one we target is related to laser-driven surface topography modification, however, so far, no exhaustive study was made to really give a clear picture of the different mechanisms involved in this complex process. The main originality of this work is to investigate the ultrafast phenomena and the subsequent structural modifications triggered by femtosecond laser pulses (< 100 fs). In this context, classical molecular dynamics approach is proposed. The challenge is to capture solide-solide phase transformations in both amorphous and crystal matrices.