Superconduction levitated actuator


An actuator that has a movable part levitated by the Meissner effect of a superconductor.

The superconduction-levitated actuator is free from friction. The Meissner effect of a superconductor, which is produced by the shielding current on the surface, varies in proportion to the square of the dimension like electrostatic force, hence suitable for micromachines. In one example, a permanent magnet was levitated on a stator consisting of an array super-conductors, and the magnet was moved by an electric current through the superconductors.


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