Tunable sensor response by voltage-control in biomimetic hair flow sensors

H. Droogendijk, C.M. Bruinink, Remco G.P. Sanders, Gijsbertus J.M. Krijnen

    Research output: Contribution to journalArticleAcademicpeer-review

    10 Citations (Scopus)
    109 Downloads (Pure)


    We present an overview of improvements in detection limit and responsivity of our biomimetic hair flow sensors by electrostatic spring-softening (ESS). Applying a DC-bias voltage to our capacitive flow sensors improves the responsively by up to 80% for flow signals at frequencies below the sensor’s resonance. Application of frequency matched AC-bias voltages allows for tunable filtering and selective gain up to 20 dB. Furthermore, the quality and fidelity of low frequency flow measurements can be improved using a non frequency-matched AC-bias voltage, resulting in a flow detection limit down to 5 mm/s at low (30 Hz) frequencies. The merits and applicability of the three methods are discussed.
    Original languageEnglish
    Pages (from-to)116-127
    Number of pages12
    Issue number1
    Publication statusPublished - 19 Mar 2013


    • TST-Life like
    • Flow sensor
    • Hair
    • Biomimetics
    • Electrostatic spring softening
    • Cricket
    • UT-Gold-D


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