abstract

• The concept of dynamic equivalence among mono-disperse soft-sphere fluids is employed in the framework of the self-consistent generalized Langevin equation (SCGLE) theory of colloid dynamics to calculate the ideal glass transition phase diagram of model soft-sphere colloidal dispersions in the softness-concentration state space. The slow dynamics predicted by this theory near the glass transition is compared with available experimental data for the decay of the intermediate scattering function of colloidal dispersions of soft-microgel particles. Increasing deviations from this simple scheme occur for increasingly softer potentials, and this is studied here using the Rogers-Young static structure factor of the soft-sphere systems as the input of the SCGLE theory, without assuming a priori the validity of the equivalence principle above. © 2009 IOP Publishing Ltd.

authors

• Medina Noyola Magdaleno
• Ramírez González Pedro Ezequiel

publication date

• 2009-01-01

published in

• Journal of Physics Condensed Matter  Journal

keywords

• Dynamics; Glass; Phase diagrams; Spheres; Suspensions (fluids); A-priori; Colloidal dispersions; Dynamic equivalences; Equivalence principles; Experimental datum; Generalized Langevin equations; Intermediate scattering functions; Microgel particles; Slow dynamics; Sphere systems; State spaces; Static structure factors; Glass transition

Digital Object Identifier (DOI)

• 10.1088/0953-8984/21/7/075101

start page

end page

volume

• 21

issue

• 7