Volume 96, Number 5, December 2011
|Number of page(s)||6|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||22 November 2011|
Generic phases of cross-linked active gels: Relaxation, oscillation and contractility
Physics Department, Syracuse University - Syracuse, NY 13244-1130, USA
2 Department of Mathematics, University of Bristol - University Walk, Clifton, Bristol BS8 1TW, UK, EU
3 Syracuse Biomaterials Institute, Syracuse University - Syracuse, NY 13244-1130, USA
Accepted: 12 October 2011
We study analytically and numerically a generic continuum model of an isotropic active solid with internal stresses generated by nonequilibrium “active” mechano-chemical reactions. Our analysis shows that the gel can be tuned through three classes of dynamical states by increasing motor activity: a constant unstrained state of homogeneous density, a state where the local density exhibits sustained oscillations, and a steady state which is spontaneously contracted, with a uniform mean density.
PACS: 87.16.Ka – Filaments, microtubules, their networks, and supramolecular assemblies / 87.10.-e – General theory and mathematical aspects
© EPLA, 2011
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