Kinetic arrest and glass-glass transitions in short-ranged attractive colloids

T. Narayanan

European Synchrotron Radiation Facility, F-38043 Grenoble, France

Short-ranged interacting colloidal systems are ubiquitous in everyday life. Model systems such as sticky hard-spheres have extensively been investigated over the past several decades. However, their unusual dynamical properties have attracted attention only recently. With fine control of the strength of attraction and the volume fraction, a variety of phases like fluid, attractive glass, repulsive glass and the transition between these states can be observed over a narrow range of parameters. This talk will present subtle to dramatic variation of colloidal microstructure, dynamics and rheological properties near these kinetic transitions in a thermally reversible short-ranged attractive system.