Phase behaviour of mixtures of thin and thick hard rods. This is the first direct simulation of an entropy-driven demixing transition of two isotropic phases. Examples of phase diagrams in the colloid packing fraction-salt concentration representation, are shown below.
Triangles are triple points, crosses critical points.
Using an extension of Onsager's second virial theory for homogenoeus bulk fluids of hard rods, we studied the effects of density inhomogeneities caused by a single hard wall and by two parallel hard walls i.e. a slit pore. Both phenomena have been confirmed in simulations by Marjolein Dijkstra . Collective diffusion in a lattice gas automaton R. van Roij and M. Ernst, J. Stat. Demixing in a hard rod-plate mixture R. van Roij and B. Mulder, J. Phys. Transverse interlayer order in lyotropic smectic liquid crystals R. van Roij, P. Bolhuis, B. Mulder and D. Frenkel, Phys.