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Force analyses on a diamagnetic particle in ferrofluid field flow in the horizontal (left, partial view) and vertical (right, i.e., the channel cross-sectional view) planes of the microchannel. The background colors show the contours of the magnetic field magnitude (in the unit of H/m) in the absence of the diamagnetic particle. The magnet-microchannel configuration is referred to Fig. 1. The microchannel and magnet are not drawn to scale.
