Dynamic phase separation of fluid membranes with rigid inclusions

Details Dynamic phase separation of fluid membranes with rigid inclusions Dynamic phase separation of fluid membranes with rigid inclusions

2002-10-22

arxiv.org/abs/cond-mat/0210494v1

Phys. Rev. E 66, 061915 (2002)

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 6 figures

Scientific paper

10.1103/PhysRevE.66.061915

Membrane shape fluctuations induce attractive interactions between rigid inclusions. Previous analytical studies showed that the fluctuation-induced pair interactions are rather small compared to thermal energies, but also that multi-body interactions cannot be neglected. In this article, it is shown numerically that shape fluctuations indeed lead to the dynamic separation of the membrane into phases with different inclusion concentrations. The tendency of lateral phase separation strongly increases with the inclusion size. Large inclusions aggregate at very small inclusion concentrations and for relatively small values of the inclusions' elastic modulus.

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