Reversible aggregation of colloids is known to exhibit various
intriguing phenomena, such as transient gel formation,
compaction, and crystallization. A reversible aggregation process can be induced by creating a depletion
interaction that originates when a non-adsorbing polymer is added to an
otherwise stable colloidal solution. A major advantage of the depletion-driven systems is
that the strength and range of the depletion interaction can be
easily controlled by varying the polymer concentration and the
length of the added polymer chains. In this talk we present and discuss
results from detailed
numerical Brownian dynamics simulations in a two-dimensional
depletion-driven colloidal system.
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