Regensburg 2002 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 46: Poster

DY 46.72: Poster

Donnerstag, 14. März 2002, 15:30–18:00, D

Modeling of metallisation of 2D protein crystals — •Heiko Kühne, Lutz Brusch, and Markus Bär — Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Straße 38, 01187 Dresden

The interest in simulations of nanoscale growth has been increasing over the last years due to the experimental accessibility of smaller systems. Our studies deal with discrete and continuous modeling of Pt deposition on S-layer sheets, that act as so-called biotemplates and provide heterogeneous substrates for growth of metal clusters and films.

Supression of coarsening and controlled film growth on heterogeneous substrats are found. Results from Monte Carlo simulations with a solid-on-solid model and from the analysis of a continuous film equation show similar trends. A (2+1)-dimensional model with a realistic adaption of the S-layer geometry exhibits growth of clusters in regular structures. Morphology transitions occur while changing the strength of the heterogenities, deposition rate or mean film height.