Departmental Papers (CBE)

Document Type

Journal Article

Date of this Version

March 2006


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


Copyright American Physical Society. Reprinted from Physical Review Letters, Volume 96, Issue 11, Article 118104, 24 March 2006, 4 pages.
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Date Posted: 22 June 2006

This document has been peer reviewed.