A biomimetic accelerometer inspired by the cricket's clavate hair

H. Droogendijk, Meint J. de Boer, Remco G.P. Sanders, Gijsbertus J.M. Krijnen

    Research output: Contribution to journalArticleAcademicpeer-review

    8 Citations (Scopus)

    Abstract

    Crickets use so-called clavate hairs to sense (gravitational) acceleration to obtain information on their orientation. Inspired by this clavate hair system, a one-axis biomimetic accelerometer has been developed and fabricated using surface micromachining and SU-8 lithography. An analytical model ispresented for the design of the accelerometer, and guidelines are derived to reduce responsivity due to flow-induced contributions to the accelerometer's output. Measurements show that this microelectromechanical systems (MEMS) hair-based accelerometer has a resonance frequency of 320 Hz, a detection threshold of 0.10 m/s^2 and a dynamic range of more than 35 dB. The accelerometer exhibits a clear directional response to external accelerations and a low responsivity to airflow. Further, the accelerometer's physical limits with respect to noise levels are addressed and the possibility for short-term adaptation of the sensor to the environment is discussed.
    Original languageEnglish
    Article number20140438
    Number of pages8
    JournalJournal of the Royal Society. Interface
    Volume11
    Issue number97
    DOIs
    Publication statusPublished - 11 Jun 2014

    Keywords

    • EWI-24786
    • IR-91349
    • TST-Life like
    • METIS-304113

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