FIG. 3.

Control experiment and simulation for yeast cell fractionation in the flow of 0.1× EMG 408 ferrofluid through a T-shaped microchannel when the permanent magnet is removed [also see Fig. 1(a)]: experimental images at the T-junction (a) and the expansion of the main branch (b); PDF plots of the four groups of yeast cells at the expansion of the main branch (c); predicted cell trajectories at the T-junction (d) and the expansion of the main branch (e) in an isometric view of the microchannel. All other experimental conditions remain identical to those in Fig. 2. The block arrows in (a) and (b) indicate the flow directions.