Rheology of Active-Particle Suspensions

Details Rheology of Active-Particle Suspensions Rheology of Active-Particle Suspensions

2003-08-26

arxiv.org/abs/cond-mat/0308529v1

Physics

Condensed Matter

Soft Condensed Matter

3 eps figures, submitted to Phys Rev Lett

Scientific paper

10.1103/PhysRevLett.92.118101

We study the interplay of activity, order and flow through a set of coarse-grained equations governing the hydrodynamic velocity, concentration and stress fields in a suspension of active, energy-dissipating particles. We make several predictions for the rheology of such systems, which can be tested on bacterial suspensions, cell extracts with motors and filaments, or artificial machines in a fluid. The phenomena of cytoplasmic streaming, elastotaxis and active mechanosensing find natural explanations within our model.

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