Ultrathin internal dielectric electrostatic actuator for reduced pull-in voltage and bidirectional actuation
Satish K Verma,
Bhaskar Mitra
Abstract:Direction and analog deflection control, as well as low voltage digital switching are the most desirable attributes in electrostatic actuators for current MEMS applications. In this work we show how internal dielectric transduction can be used to reduce pull-in voltages without reducing the air gap, and to effect bi-directional actuation. The actuator is a metal–dielectric–metal sandwich. For hybrid actuation to achieve reduced pull-in, the device has a thick bottom metal and a thin top metal, while for the up… Show more
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