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High-bandwidth viscoelastic properties of aging colloidal glasses and gels.

Publication ,  Journal Article
Jabbari-Farouji, S; Atakhorrami, M; Mizuno, D; Eiser, E; Wegdam, GH; Mackintosh, FC; Bonn, D; Schmidt, CF
Published in: Physical review. E, Statistical, nonlinear, and soft matter physics
December 2008

We report measurements of the frequency-dependent shear moduli of aging colloidal systems that evolve from a purely low-viscosity liquid to a predominantly elastic glass or gel. Using microrheology, we measure the local complex shear modulus G;{*}(omega) over a very wide range of frequencies (from 1Hzto100kHz ). The combined use of one- and two-particle microrheology allows us to differentiate between colloidal glasses and gels-the glass is homogenous, whereas the colloidal gel shows a considerable degree of heterogeneity on length scales larger than 0.5microm . Despite this characteristic difference, both systems exhibit similar rheological behaviors which evolve in time with aging, showing a crossover from a single-power-law frequency dependence of the viscoelastic modulus to a sum of two power laws. The crossover occurs at a time t_{0} , which defines a mechanical transition point. We found that the data acquired during the aging of different samples can be collapsed onto a single master curve by scaling the aging time with t_{0} . This raises questions about the prior interpretation of two power laws in terms of a superposition of an elastic network embedded in a viscoelastic background.

Duke Scholars

Published In

Physical review. E, Statistical, nonlinear, and soft matter physics

DOI

EISSN

1550-2376

ISSN

1539-3755

Publication Date

December 2008

Volume

78

Issue

6 Pt 1

Start / End Page

061402

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Jabbari-Farouji, S., Atakhorrami, M., Mizuno, D., Eiser, E., Wegdam, G. H., Mackintosh, F. C., … Schmidt, C. F. (2008). High-bandwidth viscoelastic properties of aging colloidal glasses and gels. Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, 78(6 Pt 1), 061402. https://doi.org/10.1103/physreve.78.061402
Jabbari-Farouji, S., M. Atakhorrami, D. Mizuno, E. Eiser, G. H. Wegdam, F. C. Mackintosh, Daniel Bonn, and C. F. Schmidt. “High-bandwidth viscoelastic properties of aging colloidal glasses and gels.Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics 78, no. 6 Pt 1 (December 2008): 061402. https://doi.org/10.1103/physreve.78.061402.
Jabbari-Farouji S, Atakhorrami M, Mizuno D, Eiser E, Wegdam GH, Mackintosh FC, et al. High-bandwidth viscoelastic properties of aging colloidal glasses and gels. Physical review E, Statistical, nonlinear, and soft matter physics. 2008 Dec;78(6 Pt 1):061402.
Jabbari-Farouji, S., et al. “High-bandwidth viscoelastic properties of aging colloidal glasses and gels.Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, vol. 78, no. 6 Pt 1, Dec. 2008, p. 061402. Epmc, doi:10.1103/physreve.78.061402.
Jabbari-Farouji S, Atakhorrami M, Mizuno D, Eiser E, Wegdam GH, Mackintosh FC, Bonn D, Schmidt CF. High-bandwidth viscoelastic properties of aging colloidal glasses and gels. Physical review E, Statistical, nonlinear, and soft matter physics. 2008 Dec;78(6 Pt 1):061402.

Published In

Physical review. E, Statistical, nonlinear, and soft matter physics

DOI

EISSN

1550-2376

ISSN

1539-3755

Publication Date

December 2008

Volume

78

Issue

6 Pt 1

Start / End Page

061402

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences