Title

Spatially Resolved Microrheology Through A Liquid/Liquid Interface

Keywords

Localized coherence volume dynamic light scattering; Microrheology; Multi-Lorentzian; Viscoelastic modulus

Abstract

We present a light-scattering technique for the measurement of the microrheological properties of viscoelastic liquids in small volumes over a large frequency range (on the order of eight decades). The accuracy of the method for model viscoelastic liquids (polyethylene oxide solutions in water) is demonstrated by comparing the results with conventional mechanical measurements of the loss and storage moduli. Then we show that the method can be used to measure variations in viscoelastic properties in a heterogeneous system by measuring the variation in the moduli with position (and time) across a liquid/liquid interface between a viscoelastic polymer solution and a Newtonian liquid. © 2003 Elsevier Inc. All rights reserved.

Publication Date

1-15-2004

Publication Title

Journal of Colloid and Interface Science

Volume

269

Issue

2

Number of Pages

503-513

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/S0021-9797(03)00728-8

Socpus ID

0344924894 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0344924894

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