Microrheology probes length scale dependent rheology

Citation:

Liu, J. ; Gardel, M. L. ; Kroy, K. ; Frey, E. ; Hoffman, B. D. ; Crocker, J. C. ; Bausch, A. R. ; Weitz, D. A. Microrheology probes length scale dependent rheology. Physical Review Letters 2006, 96, 118104. Copy at http://www.tinyurl.com/y5clgxkv
liu2006.pdf215 KB

Abstract:

We exploit the power of microrheology to measure the viscoelasticity of entangled F-actin solutions at different length scales from 1 to 100 mu m over a wide frequency range. We compare the behavior of single probe-particle motion to that of the correlated motion of two particles. By varying the average length of the filaments, we identify fluctuations that dissipate diffusively over the filament length. These provide an important relaxation mechanism of the elasticity between 0.1 and 30 rad/sec.

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Last updated on 04/22/2021