Deformation of crosslinked semiflexible polymer networks

Details Deformation of crosslinked semiflexible polymer networks Deformation of crosslinked semiflexible polymer networks

2003-03-24

arxiv.org/abs/cond-mat/0303499v2

Physics

Condensed Matter

Disordered Systems and Neural Networks

Typos fixed and some technical details clarified. To appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.91.108102

Networks of filamentous proteins play a crucial role in cell mechanics. These cytoskeletal networks, together with various crosslinking and other associated proteins largely determine the (visco)elastic response of cells. In this letter we study a model system of crosslinked, stiff filaments in order to explore the connection between the microstructure under strain and the macroscopic response of cytoskeletal networks. We find two distinct regimes as a function primarily of crosslink density and filament rigidity: one characterized by affine deformation and one by non-affine deformation. We characterize the crossover between these two.

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