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One- and Two-Particle Microrheology in Entangled Solutions of fd Virus

Published online by Cambridge University Press:  17 March 2011

Karim M. Addas ,
Alex J. Levine ,
Jay X. Tang  and
Christoph F. Schmidt
Karim M. Addas
Affiliation:
Department of Physics & Indiana Molecular Biology Institute, Indiana University, 727 East Third St., Bloomington, IN 47405, U.S.A.
Alex J. Levine
Affiliation:
Department of Chemical Engineering and Materials Research Laboratory, University of California, Santa Barbara, CA 93106-4030, U.S.A.
Jay X. Tang
Affiliation:
Department of Physics & Indiana Molecular Biology Institute, Indiana University, 727 East Third St., Bloomington, IN 47405, U.S.A.
Christoph F. Schmidt
Affiliation:
Department of Physics of Complex Systems, Vrije Universiteit Amsterdam, De Boelelaan 1081, 1081HV Amsterdam, The Netherlands
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Abstract

We have used one- and two-particle microrheology, employing μm-sized beads and laser interferometric displacement detection, to study the rheological properties of entangled solutions of the filamentous fd virus. Thermal fluctuations of the embedded probes were measured and viscoelastic parameters of the embedding medium were derived. In two-particle microrheology the correlated motions of two identical particles separated by a varying distance in the medium are analyzed, which can avoid biased results due to surface-depletion effects near the probes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 711: Symposia FF/GG/HH – Advanced Biomaterials--Characterization, Tissue Engineering and Complexity , 2001 , FF4.8.1
Copyright
Copyright © Materials Research Society 2002

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References

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