The mechanical contraction simulation for random dense packings is extended to binary mixture of spheres. The volume packing density as a function of sphere composition follows a characteristic triangular shape and resembles previous experiments on length scales from colloidal particles to metal...

We study the dynamics of a few-body system of microparticles using rank-ordering statistics. This dynamical system is made up of micrometer sized plastic spheres dispersed in a ferrofluid driven by external magnetic fields. The world lines of the microspheres are captured and the dynamical modes...