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Home page > Research topics > Out-of-equilibrium dynamics and dynamic heterogeneities in soft colloids .

Out-of-equilibrium dynamics and dynamic heterogeneities in soft colloids

MSC : R. Colin, B. Abou

Collaborations :

  • A. M. Alsayed, J.-C. Castaing, R. Goyal, L. Hough (UMI CNRS 3254, SOLVAY, Bristol, USA)
  • S. Wei and H. D. Ou-Yang, (Lehigh University, USA)

Dense colloidal suspensions are ideal model systems to investigate the glass transition. Hard spheres suspensions have been extensively investigated for their relative simplicity in modeling the glass transition. Recently, soft colloidal suspensions have also attracted attention: they can be flexibly designed with various particles softness and interactions, allowing for a wide variety of behaviour in mimicking the glass transition.

We are interested in the out-of-equilibrium dynamics of dense suspensions of soft colloids. In particular, we are looking at aging, heterogeneous dynamics and fluctuation-dissipation relations when approaching the glass transition and beyond.

Questioning the relationship between the chi4 susceptibility and the dynamical correlation length in a glass former, R. Colin, A. M. Alsayed, C. Gay and B. Abou, Soft Matter 11 9020 (2015).

Spatially heterogeneous dynamics in a thermosensitive soft suspension before and after the glass transition, R. Colin, A. M. Alsayed, J.-C. Castaing, R. Goyal, L. Hough and B. Abou, Soft Matter 7 4504 (2011).

Previous investigations of a fluctuation-dissipation relation in an aging colloidal glass of Laponite:

Probing a nonequilibrium Einstein relation in an aging colloidal glass, B. Abou & F. Gallet, Phys. Rev. Lett. 93 160603 (2004).

Generalized Einstein relation in an aging colloidal glass, B. Abou, F. Gallet, P. Monceau & N. Pottier, Physica A 387 3410 (2008).


Nom des membres actuels ou anciens

ABOU Bérengère, COLIN Rémy

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