Lowering the sensory threshold and enhancing the responsivity of biomimetic hair flow sensors by electrostatic spring softening

Droogendijk, Harmen and Bruinink, Christiaan M. and Sanders, Remco G.P. and Siebelder, Ortwin G. and Krijnen, Gijs J.M. (2011) Lowering the sensory threshold and enhancing the responsivity of biomimetic hair flow sensors by electrostatic spring softening. In: IEEE Sensors 2011, 28-31 October 2011, Limerick, Ireland.

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Abstract:	We report improvements in detection limit and responsivity of biomimetic hair flow sensors by electrostatic spring-softening (ESS). Applying a DC voltage to our capacitive flow sensors results in a reduced sensory threshold, which gives an improvement for the flow detection limit of more than 30%. In addition, the mechanical transfer shows large (80% and more) voltage-controlled electro-mechanical amplification of the flow signal for frequencies below the sensor's resonance.
Item Type:	Conference or Workshop Item
Copyright:	© 2011 IEEE
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Transducers Science and Technology (TST)
Link to this item:	http://purl.utwente.nl/publications/79391
Official URL:	http://dx.doi.org/10.1109/ICSENS.2011.6127093
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