Resonant silicon accelerometers in bulk micromachining technology - An approach

Christian Burrer, Jaume Esteve, Emilio Lora-Tamayo

    Research output: Contribution to journalArticleResearchpeer-review

    60 Citations (Scopus)

    Abstract

    The fabrication and characterization of resonant silicon accelerometers, made in bulk micromachining technology, is presented. The devices consist of a silicon mass, coupled axially to a strain-sensitive vibrating silicon beam. The beam is driven electrothermally and sensed piezoresistively by means of implanted piezoresistors. Two different accelerometer types are shown, differing in the complexity of the respective fabrication processes and in performances. Closed-loop operation of the devices is demonstrated. Also in the closed loop, static and dynamic measurements of prototypes have been performed. The sensor types presented are compared, and the resonant acceleration sensor concept is discussed.
    Original languageEnglish
    Pages (from-to)122-130
    JournalJournal of Microelectromechanical Systems
    Volume5
    DOIs
    Publication statusPublished - 1 Jun 1996

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