Dresden 2014 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 36: Posters: Bio/organic Molecules on Surfaces, Graphene, Solid/liquid interfaces, Metal Substrates, Electronic Structure Theory

O 36.100: Poster

Dienstag, 1. April 2014, 18:30–22:00, P1

Structure formation on prepatterned surfaces — •Oleg Buller and Andreas Heuer — Institut für Physikalische Chemie, WWU, Münster

The main focus of our investigations is the analysis of structure formation on prepatterned surfaces of deposited molecules. The resulting self-organisation strongly depends on the chosen conditions such as substrate temperature, flux, concentration or surface geometry. Here we study the structure formation on prepatterned stripes as well as on a prepatterned grid. We use discrete kinetic Monte Carlo simulations. It turns out that in particular the length of the aging period after the deposition process as well as the chosen particle concentration strongly influences the characteristics of the resulting structure. In contrast, the flux is much less relevant since the final structures mainly form during the aging period. We also characterize the stability of the structures. The simulation results are finally compared with corresponding experiments where organic molecules are deposited on prepatterned surfaces.