Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Polarity-responsive
Patent
1996-05-31
1999-08-31
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Polarity-responsive
257415, H01H 5122
Patent
active
059458984
ABSTRACT:
A selectively actuatable microstructure is provided having a base, a cantilevered element supported by at least one mechanical attachment attached to the base which permits the element to change its orientation, and at least one layer of magnetically-active material placed on one or more regions of a surface of the cantilevered element. A selectively applied magnetic field can apply torque to the cantilevered element and cause it to move. A voltage source causes a Coulombic attractive force for holding the cantilevered element against movement in the presence of an applied magnetic field. A number of the selectively actuatable microstructures may be provided in an array so that each of the microstructures may be individually actuated by the selective switching of the corresponding voltage sources.
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M. Shikida, et al., "Fabrication of an Electrostatic Microactuator with an S-Shaped Film", The 8th Int. Conference on Solid-State Sensors and Actuators and Eurosensors IX, Digest of Technical Papers, Jun. 25-29, 1995, Stockholm Sweden, vol. 1, pp. 426-429.
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Judy Jack W.
Muller Richard S.
Donovan Lincoln
The Regents of the University of California
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