High-frequency microrheology of wormlike micelles.

Journal Article (Journal Article)

We have measured the frequency-dependent shear modulus of entangled solutions of wormlike micelles by high-frequency microrheology and have compared the results with those from macrorheology experiments done on the same samples. Using optical microrheology based on laser interferometry we have measured loss and storage moduli over six decades in frequency up to about 100 kHz. We present data over a decade in concentration in the entangled regime and find good agreement between micro- and macrorheology, thus validating recently developed microrheology techniques. By collapsing data for different concentrations, we furthermore determine both the concentration scaling of the plateau modulus and a power-law exponent of the complex shear modulus at high frequencies.

Full Text

Duke Authors

Cited Authors

  • Buchanan, M; Atakhorrami, M; Palierne, JF; MacKintosh, FC; Schmidt, CF

Published Date

  • July 21, 2005

Published In

Volume / Issue

  • 72 / 1 Pt 1

Start / End Page

  • 011504 -

PubMed ID

  • 16089967

Electronic International Standard Serial Number (EISSN)

  • 1550-2376

International Standard Serial Number (ISSN)

  • 1539-3755

Digital Object Identifier (DOI)

  • 10.1103/physreve.72.011504

Language

  • eng