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Distinct regimes of elastic response and deformation modes of cross-linked cytoskeletal and semiflexible polymer networks
D. A. Head, A. J. Levine, F. C. MacKintosh
Semiflexible polymers such as filamentous actin play a vital role in the mechanical behavior of cells, yet the basic properties of cross-linked F-actin networks remain poorly under…
Non-universality of elastic exponents in random bond-bending networks
D. A. Head, F. C. MacKintosh, A. J. Levine
We numerically investigate the rigidity percolation transition in two-dimensional flexible, random rod networks with freely rotating cross-links. Near the transition, networks are…
Deformation of crosslinked semiflexible polymer networks
D. A. Head, A. J. Levine, F. C. MacKintosh
Networks of filamentous proteins play a crucial role in cell mechanics. These cytoskeletal networks, together with various crosslinking and other associated proteins largely determ…
Anomalous force diffusion in nearly-ordered packings of frictionless discs
D. A. Head
We derive analytic expressions for force propagation in packings of frictionless discs with a narrow distribution of disc sizes, by expanding to first order about the known ordered…