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C. Nathala:
"Laser-induced periodic surface structures: Formation mechanisms, characteristics and applications";
Vortrag: Seminar Institut für Allgemeine Physik (IAP), TU Wien; 27.04.2016.

Laser-induced periodic surface structures (LIPSS or ripples) appear on all kinds of materials: dielectrics, semiconductors, polymers and metal surfaces, when exposed to single or multiple ultra-short laser pulses. The formed periodic structures have two sets of periods1. One set of periods is close to the wavelength of the laser radiation and the other set has periods close to 1/10th of the wavelength of the incident radiation. The field has recently gained remarkable interest as they can be generated in a single-step process and allows a wide range of surface functionalization. Possible applications include colorization, control of surface wetting behaviour and friction management. In this seminar, I will talk about the formation mechanisms of LIPSS, results of our experiments and current state-of-the art applications of LIPSS.

1 C. S. R. Nathala, A. Ajami, A. A. Ionin, S. I. Kudryashov, S. V. Makarov, T. Ganz, A. Assion, and W. Husinsky, Optics Express 23, 5915 (2015).