Colloidal gelation and non-ergodicity transitions

TL;DR

This paper uses mode coupling theory to analyze how dilute colloidal suspensions with short-range attractions undergo non-ergodicity transitions, shedding light on the mechanisms behind colloidal gelation.

Contribution

It introduces a virial expansion-based approach within MCT to study non-ergodicity transitions in dilute colloidal systems with attractive interactions, linking theory to gelation phenomena.

Findings

Identification of mechanisms driving non-ergodicity transitions

Relevance of virial expansion in modeling colloidal gelation

Insights into the role of short-range attractions in colloidal dynamics

Abstract

Within the framework of the mode coupling theory (MCT) of structural relaxation, mechanisms and properties of non-ergodicity transitions in rather dilute suspensions of colloidal particles characterized by strong short-ranged attractions are studied. Results building on the virial expansion for particles with hard cores and interacting via an attractive square well potential are presented, and their relevance to colloidal gelation is discussed.