Regensburg 2010 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 5: Nanoengineered Thin Films

DS 5.3: Vortrag

Montag, 22. März 2010, 16:15–16:30, H8

Direct comparision of large scale simulation of nanostructuring of metals with the experiment — •Dmitry Ivanov and Baerbel Rethfeld — TU-Kaiserslautern, Physcis Department, 67663

The process of short pulse laser nanostructuring of materials currently is a subject of active research interest from the side of rapidly progressive and promising scientific fields: IT- and BIO- technologies. The structures on sub wavelength scale obtained on metals [1] semiconductors [2] and insulators [3] exhibit unique properties from the point of both fundamental physics and possible technological applications. However, transient and nonequilibrium character of processes occurring simultaneously and on relatively wide time and spatial scales makes the experimental study limited and expensive on one hand and the applicability of the theoretical models difficult on the other one. In this work, the complete process of femtosecond laser nanostructuring of Au film on a substrate is modeled on the experimental scale in a super-large scale simulation based on Molecular Dynamics. [1] A.I. Kuznetsov, J. Koch, and B.N. Chichkov, Appl. Phys. A 94, 221 (2009). [2] J. Gottmann and R. Wagner, Proc. of SPIE 6106, 61061R (2006). [3] E. Akcöltekin, S. Akcöltekin, O. Osmani, A. Duvenbeck, H. Lebius and M. Schleberger, New J. of Phys. 10, 053007 (2008). [4] D.S. Ivanov, B.C. Rethfeld, G.M. O*Connor, T.J. Glynn, A.N. Volkov, and L.V. Zhigilei, Appl. Phys. A. 92, 791 (2008).