Dresden 2003 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 22: Soft matter II

DY 22.1: Vortrag

Dienstag, 25. März 2003, 10:45–11:00, G\"OR/226

Curvature elasticity of polymer decorated membranes — •Thorsten Auth and Gerhard Gompper — Institut für Festkörperforschung, Forschungszentrum Jülich, 52425 Jülich

Membrane models are used to describe a variety of systems, ranging from biological membranes to microemulsions. Experiments allow to measure the influence of polymers on these systems [1,2]. It has been found that already small amounts of polymers can have a dramatic effect on the phase behaviour. Theories are available for ideal polymer chains [3,4]. We have developed a method to simulate the effect of anchored polymers in mushroom regime on the membrane properties. The Monte Carlo technique is used to study self-avoidance effects as well as different polymer architectures. New results for the dependency of the polymer effect on star polymer functionality will be presented.

[1] E. Evans and W. Ravicz; Phys. Rev. Lett. 79, 2379 (1997)

[2] H. Endo et al.; Phys. Rev. Lett. 85, 102 (2000)

[3] C. Hiergeist and R. Lipowsky; J. Phys. II (France) 6, 1465 (1996)

[4] E. Eisenriegler, A. Hanke, S. Dietrich; Phys. Rev. E 54, 1134 (1996)