“School of Physics”
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| Paper IPM / P / 12316 |
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| Abstract: | |||||
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We study a nanoscale system composed of one corrugated plate (rack) and one corrugated cylinder (pinion)
coupled via the lateral Casimir force.We assume that the rack moves uniformly. The axle of the pinion experiences
frictional torque and random torque due to a surrounding fluid. We show that even in the presence of thermal
noise, the device can work against external loads: The pinion rotates with a nonzero average velocity. The device
operation becomes less influenced by the noise as the gap between rack and pinion decreases.
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