Figure 3.

Download video file ^{(8.8MB, avi)}

Parts (a) and (b) show two frames from the video M2 corresponding to steps (a) and (d) in Fig. 2 for M-280 and MyOne beads with t_f = 180 ms. Only the M-280 beads are able to cross the stripe (light color). (c) Sequence of frames from the video M3 where a field sequence with t_f = 140 ms is applied. The M-280 beads are translated in the negative x-direction, whereas the MyOne beads (small dots mainly visible on the left side) are left behind (enhanced online) .