Amorphous solids, or glasses, are distinguished from crystalline solids by their lack of long-
range structural order. At the level of two-body structural correlations, glassformers show no …

As one increases the concentration of a colloidal suspension, the system exhibits a dramatic
increase in viscosity. Beyond a certain concentration, the system is said to be a colloidal …

The simplicity of hard spheres as a model system is deceptive. Although the particles
interact solely through volume exclusion, that nevertheless suffices for a wealth of static and …

We propose a new view on yield stress materials. Dense suspensions and many other
materials have a yield stress—they flow only if a large enough shear stress is exerted on …

We study by molecular dynamics the interplay between arrest and crystallization in hard
spheres. For state points in the plane of volume fraction (0.54≤ ϕ≤ 0.63) and polydispersity …

Many high-concentration multiphase materials that are industrially and academically
important do not reach thermodynamic equilibrium because of kinetic constraints originating …

We present a fast, high-throughput method for characterizing the motility of microorganisms
in three dimensions based on standard imaging microscopy. Instead of tracking individual …

We show, using differential dynamic microscopy, that the diffusivity of nonmotile cells in a
three-dimensional (3D) population of motile E. coli is enhanced by an amount proportional …

We report x-ray photon correlation spectroscopy (XPCS) and rheometry experiments to
study the temporal evolution of gel formation and aging in suspensions of silica nanocolloids …

We use multi-arm star polymers as model soft colloids with tuneable interactions and
explore their behaviour in the glassy state. In particular, we perform a systematic rheological …