Microrheology Probes Length Scale Dependent Rheology

by: J Liu, ML Gardel, K Kroy, E Frey, BD Hoffman, JC Crocker, AR Bausch, DA Weitz

Physical Review Letters, Vol. 96, No. 11. (2006)

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Abstract

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.

@article{citeulike:2264824, abstract = {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.}, author = {Liu, J. and Gardel, M. L. and Kroy, K. and Frey, E. and Hoffman, B. D. and Crocker, J. C. and Bausch, A. R. and Weitz, D. A. }, citeulike-article-id = {2264824}, doi = {10.1103/PhysRevLett.96.118104}, journal = {Physical Review Letters}, keywords = {polymer, semiflexiable, weitz}, number = {11}, posted-at = {2008-04-23 20:10:13}, priority = {2}, publisher = {APS}, title = {Microrheology Probes Length Scale Dependent Rheology}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000096000011118104000001\&idtype=cvips\&gifs=yes}, volume = {96}, year = {2006} }

RIS record

TY - JOUR ID - citeulike:2264824 TI - Microrheology Probes Length Scale Dependent Rheology JF - Physical Review Letters VL - 96 IS - 11 PB - APS N2 - 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. KW - polymer KW - semiflexiable KW - weitz AU - Liu, J AU - Gardel, ML AU - Kroy, K AU - Frey, E AU - Hoffman, BD AU - Crocker, JC AU - Bausch, AR AU - Weitz, DA PY - 2006/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000096000011118104000001&idtype=cvips&gifs=yes ER -

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