Jump to main content
Jump to site search

Issue 17, 2014
Previous Article Next Article

Rheology of soft colloids across the onset of rigidity: scaling behavior, thermal, and non-thermal responses

Author affiliations

Abstract

We study the rheological behavior of colloidal suspensions composed of soft sub-micron-size hydrogel particles across the liquid–solid transition. The measured stress and strain-rate data, when normalized by thermal stress and time scales, suggest our systems reside in a regime wherein thermal effects are important. In a different vein, critical point scaling predictions for the jamming transition, typical in athermal systems, are tested. Near dynamic arrest, the suspensions exhibit scaling exponents similar to those reported in Nordstrom et al., Phys. Rev. Lett., 2010, 105, 175701. The observation suggests that our system exhibits a glass transition near the onset of rigidity, but it also exhibits a jamming-like scaling further from the transition point. These observations are thought-provoking in light of recent theoretical and simulation findings, which show that suspension rheology across the full range of microgel particle experiments can exhibit both thermal and athermal mechanisms.

Graphical abstract: Rheology of soft colloids across the onset of rigidity: scaling behavior, thermal, and non-thermal responses

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Sep 2013, accepted on 24 Jan 2014 and first published on 30 Jan 2014


Article type: Paper
DOI: 10.1039/C3SM52454J
Citation: Soft Matter, 2014,10, 3027-3035
  •   Request permissions

    Rheology of soft colloids across the onset of rigidity: scaling behavior, thermal, and non-thermal responses

    A. Basu, Y. Xu, T. Still, P. E. Arratia, Z. Zhang, K. N. Nordstrom, J. M. Rieser, J. P. Gollub, D. J. Durian and A. G. Yodh, Soft Matter, 2014, 10, 3027
    DOI: 10.1039/C3SM52454J

Search articles by author

Spotlight

Advertisements