Phoretic Migration of Colloids in Cellular Flows

Diffusiophoresis, the motion of colloids in the presence of solute gradients, has been demonstrated to be effective in a range of phenomena, from manipulating colloids to cargo delivery in cells. However, it is unclear if phoretic migration of colloids would play any role in the presence of background flows. We address this problem using a cellular flow configuration, typical of 2D convective flows, which can be non-chaotic, chaotic, or turbulent. We demonstrate how the coupling between solute mixing and phoretic transport of colloids shapes their long-term dispersion.