Microrheology probes length scale dependent rheology

J. Liu; M. L. Gardel; K. Kroy; E. Frey; B. D. Hoffman; J. C. Crocker; A. R. Bausch; D. A. Weitz

doi:10.1103/PhysRevLett.96.118104

Microrheology probes length scale dependent rheology

J. Liu, M. L. Gardel, K. Kroy, E. Frey, B. D. Hoffman, J. C. Crocker, A. R. Bausch, D. A. Weitz

Chair of Cellular Biophysics

Research output: Contribution to journal › Article › peer-review

179 Scopus citations

Abstract

We exploit the power of microrheology to measure the viscoelasticity of entangled F-actin solutions at different length scales from 1 to 100μm 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 30rad/sec.

Original language	English
Article number	118104
Journal	Physical Review Letters
Volume	96
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.96.118104
State	Published - 2006

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10.1103/PhysRevLett.96.118104

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author = "J. Liu and Gardel, {M. L.} and K. Kroy and E. Frey and Hoffman, {B. D.} and Crocker, {J. C.} and Bausch, {A. R.} and Weitz, {D. A.}",

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AU - Bausch, A. R.

AU - Weitz, D. A.

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Microrheology probes length scale dependent rheology

Abstract

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