2015/05/31 by George D. Tsibidis, Costas Fotakis, Emmanuel Stratakis · 1 citation
Physics and Astronomy · #cond-mat.mtrl-sci #cond-mat.mes-hall #physics.flu-dyn
paper · pdf · doi:10.1103/physrevb.92.041405
published as Physical Review B 92, 041405(R) (2015) · arXiv admin note: substantial text overlap with arXiv:1109.2568
arxiv created 2015/06/04 · arxiv updated 2015/07/13
Materials irradiated with multiple femtosecond laser pulses in sub-ablation conditions are observed to develop various types of self-assembled morphologies that range from nano-ripples to periodic micro-grooves and quasi-periodic micro-spikes. Here, we present a physical scenario that couples electrodynamics, describing surface plasmon excitation, with hydrodynamics, describing Marangoni convection, to elucidate this important sub-ablation regime of light matter interaction in which matter is being modified, however, the underlying process is not yet fully understood. The proposed physical mechanism could be generally applicable to practically any conductive material structured by ultrashort laser pulses, therefore it can be useful for the interpretation of further critical aspects of light matter interaction.