Dresden 2011 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 23: Nonlinear Waves/ Nonlinear Lattices

DY 23.7: Vortrag

Mittwoch, 16. März 2011, 15:45–16:00, ZEU 255

Synchronization in monolayer transfer onto prepatterned substrates: A novel perspective for controlled nanopatterning of surfaces — •Michael H. Köpf, Svetlana V. Gurevich, and Rudolf Friedrich — Institut für Theoretische Physik, Universität Münster

Solid substrates can be endued with self-organized regular stripe patterns of nanoscopic lengthscale by Langmuir-Blodgett transfer of organic monolayers [1]. Here, we present an extension of the recent theoretical description of these phenomena [2,3], considering the effect of periodically prepatterned substrates on this process of spatiotemporal pattern formation. It leads to a time periodic forcing of the oscillatory behavior at the meniscus. Utilizing higher order synchronization with this forcing, complex periodic patterns of predefined wavelength can be created. The dependence of the synchronization on the amplitude and the wavelength of the wetting contrast is investigated in one and two spatial dimensions and the resulting patterns are discussed. Furthermore, the effect of prepatterned substrates on the pattern selection process is investigated [4].

[1] M. Gleiche, L. F. Chi, H. Fuchs, Nature, 403 (2000) 173-175

[2] M. H. Köpf, S. V. Gurevich, R. Friedrich, EPL (Europhysics Letters), 86 (2009) 66003 (6 pages)

[3] M. H. Köpf, S. V. Gurevich, R. Friedrich, L. F. Chi, Langmuir, 26 (2010) 10444-10447

[4] M. H. Köpf, S. V. Gurevich, R. Friedrich, submitted to PRE, arXiv:1011.1140v1 [nlin.PS] (2010)