Modelling and simulation of laser induced periodic surface structuring

Yayla, Mahmut Sinan
In recent years, the interest in laser-induced periodic surface structuring (LIPSS) is increased due to its flexibility and cost efficiency. It is a promising alternative to the conventional ways of surface micro and nano structuring. Although, there are generally accepted and supported theoretical studies in the field, the phenomenon lacks a complete model. This thesis study presensts a theoretical model based on scattering from surface nonuniformities, and includes thermochemical interactions on the surface of the material to create the grooves. This model is implemented in a simulation software that takes material, laser and scanning parameters and finds out the resulting surface structure. The simulation software is used to observe normal LIPSS on the surface of Ti and validated by normal LIPSS results. It predicts the existence of various more types of LIPSS, specifically hexagonal LIPSS, using a single scan with linearly polarized light, as demonstrated experimentally in this work. The parameters obtained in the simlation are used in fabrication to obtain hexagonal LIPSS. The desired surface structures are obtained on Ti surfaces.


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Citation Formats
M. S. Yayla, “Modelling and simulation of laser induced periodic surface structuring,” M.S. - Master of Science, Middle East Technical University, 2023.