A Large Range Multi-Axis Capacitive Force/Torque Sensor Realized in a Single SOI Wafer

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    Abstract

    A silicon capacitive force/torque sensor is designed and realized to be used for biomechanical applications and robotics. The sensor is able to measure the forces in three directions and two torques using four parallel capacitor plates and four comb-structures. Novel spring and lever structures are designed to separate the different force components and minimize mechanical crosstalk. The fabrication process is based on deep reactive ion etching on both sides of a single silicon-on-insulator wafer and uses only two masks making it a straight-forward and robust process. The sensor has a force range of 2 N in shear and normal direction and a torque range of more than 6 Nmm. It has a high sensitivity of 38 fF/N and 550 fF/N in shear and normal direction respectively.
    Original languageEnglish
    Title of host publication27th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2014
    Place of PublicationSan Francisco
    PublisherThe Printing House, Inc.
    Pages680-683
    Number of pages4
    ISBN (Print)978-1-4799-3509-3
    DOIs
    Publication statusPublished - 26 Jan 2014
    Event27th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2014 - San Francisco, United States
    Duration: 26 Jan 201430 Jan 2014
    Conference number: 27

    Publication series

    Name
    PublisherThe Printing House, Inc.

    Conference

    Conference27th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2014
    Abbreviated titleMEMS
    CountryUnited States
    CitySan Francisco
    Period26/01/1430/01/14

    Keywords

    • METIS-304024
    • IR-89829
    • EWI-24583
    • TST-SENSORS

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