Figure 2. (a) Channel-magnet configuration and (b–d) magnetic force distribution in the channel midplane for 2 mm, 5 mm and 10 mm long rectangular (left) and U-shaped (right) devices.

Figure 2. (a) Channel-magnet configuration and (b–d) magnetic force distribution in the channel
midplane for 2 mm, 5 mm and 10 mm long rectangular (left) and U-shaped (right) devices.