Design of an electrostatic repulsive-force based vertical micro actuator

Da Y. Qiao, Wei Z. Yuan, Xiao Y. Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

Micro actuators using electrostatic repulsive-force induced by asymmetric electric field have no the problem of pull-in instability existing in electrostatic attractive-force based micro actuators, and their stroke is not limited by the initial gap between electrodes. In this paper, an improved structure of micro actuator based on electrostatic repulsive-force is presented to achieve a large vertical stroke without penalties of large actuation voltage and additional insulation layer. Numerical simulations are performed to investigate the relationship between the repulsive-force and the structural parameters. Simulation results show that the repulsive-force is highly dependent on finger width, finger distance and finger thickness rather than initial gap between movable and fixed fingers. Numerical simulation predicts that the repulsive-force based vertical micro actuator can achieve a stroke of 4 μm at a driving voltage of 78 V.

Original languageEnglish
Title of host publicationProceedings of 1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS
Pages168-171
Number of pages4
DOIs
StatePublished - 2006
Event1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS - Zhuhai, China
Duration: 18 Jan 200621 Jan 2006

Publication series

NameProceedings of 1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS

Conference

Conference1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS
Country/TerritoryChina
CityZhuhai
Period18/01/0621/01/06

Keywords

  • Actuator
  • Electrostatic
  • Micro
  • Repuslive

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