Slow Dynamics of Glass Transformation in Polymer/Colloid Systems

The splitting and non-proportional slowing down in relaxation processes of structural materials will be discussed in this talk. A visible and measurable example of particles with a repulsive potential plus a short range attraction will be used to illustrate the bridging and jamming structures that could be the key structural characteristics which leads to various dynamic features during the glass transformation, such as: modes slowing down, (dynamic) free volume change, local heterogeneity, and etc.
By observing the experimental results from such an explicit model system which emulates a molecular model of structural glass, we will give our interpretation on a molecular picture and the dynamic slowing down on the glass transformation of colloids and polymers.