In concentrated colloidal mixtures different caging mecha- nisms exist and result in different arrested states: repulsive, attractive and asymmetric glasses as well as gel-like states. We discuss their micro- scopic structure, dynamics and rheological response. Special attention is given to the non-linear mechanical behaviour, in particular the tran- sient rheological response after shear is started. Steps in both, shear rate and shear stress (creep test), are considered. The macroscopic vis- coelastic response is related to the microscopic structure and dynamics on the individual-particle level.
One- and two-component colloidal glasses under transient shear / Sentjabrskaja T.; Laurati M.; Egelhaaf S.U.. - In: THE EUROPEAN PHYSICAL JOURNAL. SPECIAL TOPICS. - ISSN 1951-6355. - ELETTRONICO. - 226:(2017), pp. 3023-3037. [10.1140/epjst/e2017-70076-0]
One- and two-component colloidal glasses under transient shear
Laurati M.;
2017
Abstract
In concentrated colloidal mixtures different caging mecha- nisms exist and result in different arrested states: repulsive, attractive and asymmetric glasses as well as gel-like states. We discuss their micro- scopic structure, dynamics and rheological response. Special attention is given to the non-linear mechanical behaviour, in particular the tran- sient rheological response after shear is started. Steps in both, shear rate and shear stress (creep test), are considered. The macroscopic vis- coelastic response is related to the microscopic structure and dynamics on the individual-particle level.
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