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The two main approaches that drive particles with light irradiation are photophoresis and radiation force.Photophoretic force is about five orders larger than radiation force in magnitude.In the light irradiation.the particles in the fluid will follow the direction of the incident light or facing the movement, which is called positive photophoresis or negative photophoresis respectively.Based on the principle of photophoresis, the particles can be driven up to tens of centimeters in a prescribed direction, the capture and separation of the particles can also be easily realized.