Diffusion, phase behavior and gelation in a two-dimensional layer of colloids in osmotic equilibrium with a polymer reservoir

Sam E Griffiths, Nick Koumakis, Aidan T Brown, Teun Vissers, Patrick B Warren, Wilson C K Poon*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The addition of enough non-adsorbing polymer to an otherwise stable colloidal suspension gives rise to a variety of phase behavior and kinetic arrest due to the depletion attraction induced between the colloids by the polymers. We report a study of these phenomena in a two-dimensional layer of colloids. The three-dimensional phenomenology of crystal-fluid coexistence is reproduced, but gelation takes a novel form, in which the strands in the gel structure are locally crystalline. We compare our findings with a previous simulation and theory, and find substantial agreement.
Original languageEnglish
Article number074903
Pages (from-to)1-10
Number of pages10
JournalThe Journal of Chemical Physics
Volume155
Issue number7
DOIs
Publication statusPublished - 17 Aug 2021

Keywords

  • cond-mat.soft

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