Rheological microscopy: Local mechanical properties from microrheology

D. T. Chen, E. R. Weeks, J. C. Crocker, M. F. Islam, R. Verma, J. Gruber, A. J. Levine, T. C. Lubensky, A. G. Yodh

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

A one- and two-point micro-rheological measurements and theory was used to determine the rheological microstructure of depletion-induced layers surrounding a tracer particle in a semidilute polymer solution. Furthermore, it was shown how the collapse of conventional one-point microrheological measurements can be applied to extract bulk viscoelastic moduli, a quantity heretofore unabiguously accessible only to two-point measurements of such systems. Refinements, both theoretical and experimental, of the basic rheological microscopy method given may enable its extension to the study of more complex media.

Original languageEnglish (US)
Article number108301
Pages (from-to)108301/1-108301/4
JournalPhysical Review Letters
Volume90
Issue number10
StatePublished - Mar 14 2003
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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