Abstract
In this study, the light-driven micromotors with different blade angles are fabricated by two-photon absorption laser lithography. Optical torque is caused by momentum change when the incident light is refracted at motor blades. The blade shape of the present micromotors is triangle shape and the blade angle is set as approximately 24°, 42° and 61°. Laser light is irradiated to the micromotor and the effect of the blade angle on the micromotor's rotation speed is investigated. In the beam concentration unit, the micromotor in acetone is placed on the stage of an inverted microscope. A 200 mW laser with 532 nm wavelength is used as the power source. As the result, the rotation speed becomes faster as the blade angle increase.
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