Parallel Magnetic Actuation Of Hinged Microstructures
PROCEEDINGS OF THE FIFTH INTERNATIONAL SYMPOSIUM ON MAGNETIC MATERIALS, PROCESSES, AND DEVICES: APPLICATIONS TO STORAGE AND MICROELECTROMECHANICAL SYSTEMS (MEMS)(1999)
Abstract
We have investigated magnetic actuation of hinged, surface micromachined structures. Electroplated magnetic material (Permalloy) is integrated with two types of hinged microstructures and the magnetic actuation process has been experimentally characterized. Under a given external magnetic field, the angular displacement of a hinged structure is determined by the volume of the magnetic material or by the stiffness of an auxiliary flexural loading spring. The design rules for achieving a prescribed asynchronous actuation sequence among a group of microstructures have been established. We have demonstrated parallel actuation of large arrays of hinged microstructures under a global (wafer scale) external magnetic field.
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