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Characterization of a Dipole Surface Drive Actuator With Large Travel and Force

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6 Author(s)

This paper presents a detailed study of the dynamic performance of an electrostatic surface drive actuator. This actuator is capable of producing 50 g's of acceleration with 70 mum travel at a 30 V bias. For the first time, air operation of a dipole surface actuator is demonstrated and we describe a fabrication process that has increased device yield more than an order of magnitude. Detailed characterization of the actuator performance is enabled by the integration of a capacitive position sensor that provides 0.5 Aring resolution in a 1-Hz bandwidth. The performance of this actuator is compared with other micromachined actuators and with more conventional milliactuators

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Microelectromechanical Systems, Journal of  (Volume:15 ,  Issue: 6 )