Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

DY: Fachverband Dynamik und Statistische Physik

DY 10: Posters I

DY 10.33: Poster

Montag, 14. März 2011, 17:00–19:00, P4

A dynamical model of controlled nanochannel lattice formation utilizing prepatterned substrates — •Michael H. Köpf, Svetlana V. Gurevich, and Rudolf Friedrich — Institut für Theoretische Physik, Universität Münster

Self-organized processes in dewetting systems provide effective methods for the controlled fabrication of micro- and nanostructured surfaces. Lipid monolayers such as DPPC and DMPE are known to form regular stripe patterns upon Langmuir-Blodgett transfer onto solid substrates [1]. These patterns consist of alternating domains of different thermodynamic phases and result from phase transitions induced by a substrate-monolayer interaction. By incorporation of the monolayer thermodynamics into a hydrodynamic model of thin film flow, this process can be described in terms of two coupled nonlinear partial differential equations [2,3]. Here, we present a theoretical study of the effect of prepatterned substrates, focussing on periodic prestructures. These structures lead to a periodic forcing of the pattern formation at the meniscus. Synchronization with this forcing can be exploited to generate complex periodic structures in a controlled manner [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)