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 language | English (US) |
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Article number | 108301 |
Pages (from-to) | 108301/1-108301/4 |
Journal | Physical Review Letters |
Volume | 90 |
Issue number | 10 |
State | Published - Mar 14 2003 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy