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Bistable voltage-actuated switch

This and the next image are from:

Lior Medina, Rivka Gilat, Bojan Ilic and Slava Krylov, “Two-directional operation of bistable latchable micro switch actuated by a single electrode, MDPI Proceeding of Eurosensors Paris, 2017

ABSTRACT: Curved micromechanical beams are a versatile platform for exploring multistable behavior, with potential applications in mechanical based logic elements and electrical and optical switches. Here we demonstrate bidirectional electrostatic actuation of a bistable, latched, micromechanical beam by the same electrode, which was used for the snap-through switching of the device. The release of the mechanically-latched beam is achieved by pre-loading the structure using a rising voltage applied to the electrode, followed by a sudden decrease of the voltage. This abrupt removal of the loading results in a transient response and dynamic snap-back of the beam.

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