Microrheology of Entangled F-Actin Solutions

Loading...
Thumbnail Image
Penn collection
Departmental Papers (CBE)
Degree type
Discipline
Subject
Funder
Grant number
License
Copyright date
Distributor
Related resources
Author
Gardel, M. L.
Valentine, M. T.
Bausch, A. R.
Weitz, D. A.
Contributor
Abstract

We measure the viscoelasticity of entangled F-actin over length scales between 1 and 100 µm using one- and two-particle microrheology, and directly identify two distinct microscopic contributions to the elasticity. Filament entanglements lead to a frequency-independent elastic modulus over an extended frequency range of 0:01–30 rad/ sec; this is probed with one-particle microrheology. Longitudinal fluctuations of the filaments increase the elastic modulus between 0.1 and 30 rad/ sec at length scales up to the filament persistence length; this is probed by two-particle microrheology.

Advisor
Date Range for Data Collection (Start Date)
Date Range for Data Collection (End Date)
Digital Object Identifier
Series name and number
Publication date
2003-10-07
Journal title
Volume number
Issue number
Publisher
Publisher DOI
Journal Issue
Comments
Copyright American Physical Society. Reprinted from Physical Review Letters, Volume 91, Issue 15, Article 158302, October 2003, 4 pages. Publisher URL: http://dx.doi.org/10.1103/PhysRevLett.91.158302
Recommended citation
Collection