Suspensions of repulsive colloidal particles near the glass transition: Time and frequency domain descriptions.
We study the relaxation of both spontaneous and shear-induced fluctuations in suspensions of charged-stabilized colloidal particles near the glass transition by dynamic light scattering and rheology. Both observations are here understood in terms of a common structural relaxation process under a hard-sphere mode-coupling formalism. For ergodic systems, we show that the descriptions of the relaxation dynamics in time and frequency domains are governed by a common set of dynamic parameters. It is further shown that the microscopic ergodicity break-up induces the emergence of the macroscopic glass elasticity.
Roldán-Vargas
Sándalo
S
Departamento de Física Aplicada, Universidad de Granada, Spain. sandalo@ugr.es
de Vicente
Juan
J
Barnadas-Rodríguez
Ramon
R
Quesada-Pérez
Manuel
M
Estelrich
Joan
J
Callejas-Fernández
José
J
D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D055119:Elastic Modulus; D005898:Glass / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D010316:Particle Size; D044367:Phase Transition
D003102:Colloids