0 10 20 30 40 50 60 0 2e-06 4e-06 6e-06 Eq.8 MC data 0 0.1 0.2 0.3 0.4 0.5 k$_{c}$R$_{2}$$^{2}$/D$_{1}$ 0 2e-07 4e-07 6e-07 v[R 1 /MC cycle] a) b) Figure 6: Snapshot of a passive colloid in a concentration gradient of Asakura-Oosawa solute particles: solute particles are generated at the top planar source, and removed at the bottom planar sink (the positions of these planes are indicated by the blue circles). 26