Classes and granular materials share many features in common: Both can flow under some conditions but form disordered solids under other conditions. The similarity is captured within the jamming phase diagram, which considers how the solid-like state is fluidized with decreasing density, increasing shear stress, and increasing agitation, due to temperature in the case of molecular glasses and to shaking or some other form of agitation in the case of granular materials. Colloidal particles also undergo both jamming and glass transitions. They have the advantage that they are thermalized by temperature and that the particles themselves are large enough to be directly visualized. Thus, the study of the glass transition in colloids can provide an interesting comparison between molecular glasses and granular materials. This paper reviews the properties of colloidal suspensions near the colloidal glass transition, and explores both the glass-like properties and the jamming properties of these materials.
Times Cited: 0 Poincare Seminar on Glasses and Grains Nov 21, 2009 Inst Henri Poincare, Paris, FRANCE Commissariat Energie Atom, Div Sci Matiere; Daniel Iagolnitzer Fdn; Triangle Phys Fdn; Ecole Polytechn