Dresden 2014 – scientific programme
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O: Fachverband Oberflächenphysik
O 95: Micro- and Nanopatterning (DS jointly with O)
O 95.6: Talk
Friday, April 4, 2014, 10:45–11:00, CHE 89
Surface nanostructuring of fused silica assisted by laser-induced self-assembling of thin metal layers: Theory and experiment — •Pierre Lorenz1, Michael Klöppel2,3, Tomi Smausz4, Tamas Csizmadia4, Frank Frost1, Martin Ehrhardt1, Klaus Zimmer1, Bela Hopp1, and Pu Li2 — 1Leibniz-Institut für Oberflächenmodifizierung e. V., Permoserstraße 15, 04318 Leipzig, Germany — 2Simulation and Optimal Processes Group, Institute of Automation & Systems Engineering, Ilmenau University of Technology, POB 10 05 65, 98684 Ilmenau, Germany — 3Institute of Scientific Computation, Department of Mathematics, TU Dresden, 01062 Dresden — 4Department of Optics and Quantum Electronics, University of Szeged, H-6720 Szeged, Dóm tér 9, Hungary
The introduced laser method demonstrates a novel concept of complex nanostructuring of dielectric surfaces assisted by a laser-induced molten metal layer deformation process. This method allows the fast, large-scale, and cost-effective production of randomly distributed surface nanostructures with a lateral dimension down to 10 nm. However, for an optimizing of this process a profound physical understanding is necessary. For this, the process was simulated under the assumption of the heat equation and the Navier-Stokes equations. Furthermore, the resultant structures were investigated dependent on the metal layer thickness and the laser parameter by AFM and SEM. Additionally, the dynamics of the deformation process were analysed by time-dependent reflection and transmission as well as time-dependent optical microscopic measurement.