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Colloidal particles at interfaces : from model systems for dynamical studies to applications.

Jan Vermant Université de Leuven, Belgique

Particles at trapped at liquid liquid interfaces are convenient model systems for investigating the dynamics of colloidal systems. For example, the aggregation, yielding and restructuring under flow can be studied with high temporal and spatial resolution. Yet placing particles at interfaces also affects the rheological properties of interfaces, which in turn can be used to affect morphological processes in emulsions and foams. In the present work, we will first discuss how the interactions between particles at interfaces can be tailored and how surface flows affect the suspension microstructure. Subsequently some novel methods to measure the rheological properties of interfaces will be discussed. finally, we will try to demonstrate how all of this can be used in applications.