Nonlinear elasticity of composite networks of stiff biopolymers with flexible linkers

C.P. Broedersz, C. Storm, F.C. MacKintosh

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77 Citations (Scopus)
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Abstract

Motivated by recent experiments showing nonlinear elasticity of in vitro networks of the biopolymer actin cross-linked with filamin, we present an effective medium theory of flexibly cross-linked stiff polymer networks. We model such networks by randomly oriented elastic rods connected by flexible connectors to a surrounding elastic continuum, which self-consistently represents the behavior of the rest of the network. This model yields a crossover from a linear elastic regime to a highly nonlinear elastic regime that stiffens in a way quantitatively consistent with experiment.
Original languageEnglish
Article number118103
Pages (from-to)118103-1/4
Number of pages4
JournalPhysical Review Letters
Volume101
Issue number11
DOIs
Publication statusPublished - 2008

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