Nonequilibrium patterns and shape fluctuations in reactive membranes

Details Nonequilibrium patterns and shape fluctuations in reactive membranes Nonequilibrium patterns and shape fluctuations in reactive membranes

2005-11-01

arxiv.org/abs/cond-mat/0511032v1

Phys. Rev. E 71, 051906 (2005). Erratum: Phys. Rev. E 72, 039901(E) (2005)

Physics

Condensed Matter

Soft Condensed Matter

Erratum incorporated in posted version

Scientific paper

10.1103/PhysRevE.71.051906

A simple kinetic model of a two-component deformable and reactive bilayer is presented. The two differently shaped components are interconverted by a nonequilibrium reaction, and a phenomenological coupling between local composition and curvature is proposed. When the two components are not miscible, linear stability analysis predicts, and numerical simulations show, the formation of stationary nonequilibrium composition/curvature patterns whose typical size is determined by the reactive process. For miscible components, a linearization of the dynamic equations is performed in order to evaluate the correlation function for shape fluctuations from which the behavior of these systems in micropipet aspiration experiments can be predicted.

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