Lampros Mountrakis et. al published a paper in Europhysics Letters where they demonstrate that shear-induced diffusion of red blood cells (in a two-dimensional model system) does not follow the established linear scaling with shear rate for high hematocrits. They hypothesise that collective effects in the suspension are key to understand this phenomenon, and by performing cluster analyses they show the significance of cluster effects on the dynamics of the RBCs.
