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Experiment of trapping beads by coils. Channel parameters: 100 μm wide, 3 cm long and 50 μm high. Coil parameters: 2 mm wide, Cu wire width: 10 μm; space between two wires: 10 μm; Cu wire height: ~15 μm; and 46 turns. Trapping conditions: Beads concentration: ~ 1.33 × 1011 beads/100 μL, flow rate: 0.2 μL/min; current I = 120 mA.
