Abstract: A separation device is a separation device that separates dielectric particles. The separation device includes a flow channel (20), a plurality of three-dimensionally shaped electrodes (31, 32), a power supply (40), and a controller. The flow channel (20) feeds a suspension containing the dielectric particles. The plurality of three-dimensionally shaped electrodes (31, 32) is arranged in the flow channel (20) and extends in a height direction of the flow channel (20). The power supply (40) applies an AC voltage with a predetermined frequency to the plurality of electrodes (31, 32) so as to generate dielectrophoresis of the dielectric particles. The controller controls the power supply.

Abstract: An analysis device (200) analyzes a crossover frequency at which a dielectrophoretic force on dielectric particles switches from a repulsive force to an attractive force or from the attractive force to the repulsive force, comprising a flow channel (5), a pair of electrodes (22, 23), a power supply (24), an imaging unit (25) and an analyzer (26). Through the flow channel (5), a sample solution containing the dielectric particles in the dielectrophoretic liquid flows. The pair of electrodes (22, 23) are arranged in the first channel. The power supply (24) applies a frequency-modulated AC voltage to the first electrodes (22, 23). The imaging unit (25) captures an image of a movement trajectory of each of the dielectric particles flowing between the electrodes (22, 23) in the flow channel. The analyzer (26) obtains the crossover frequency of the dielectric particles based on the captured image of the movement trajectory.

Abstract: An analysis device (200) analyzes a crossover frequency at which a dielectrophoretic force on dielectric particles switches from a repulsive force to an attractive force or from the attractive force to the repulsive force, comprising a flow channel (5), a pair of electrodes (22, 23), a power supply (24), an imaging unit (25) and an analyzer (26). Through the flow channel (5), a sample solution containing the dielectric particles in the dielectrophoretic liquid flows. The pair of electrodes (22, 23) are arranged in the first channel. The power supply (24) applies a frequency-modulated AC voltage to the first electrodes (22, 23). The imaging unit (25) captures an image of a movement trajectory of each of the dielectric particles flowing between the electrodes (22, 23) in the flow channel. The analyzer (26) obtains the crossover frequency of the dielectric particles based on the captured image of the movement trajectory.