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Applied Physics Letters / Volume 99 / Issue 21 / DEVICE PHYSICS

Appl. Phys. Lett. 99, 213503 (2011); http://dx.doi.org/10.1063/1.3663865 (3 pages)

Non-resonant parametric amplification in biomimetic hair flow sensors: Selective gain and tunable filtering

H. Droogendijk, C. M. Bruinink, R. G. P. Sanders, and G. J. M. Krijnen

MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands

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(Received 14 September 2011; accepted 31 October 2011; published online 21 November 2011)

We demonstrate that the responsivity of flow sensors for harmonic flows can be improved significantly by non-resonant parametric amplification. Using electrostatic spring softening by AC-bias voltages, increased responsivity and sharp filtering are achieved in our biomimetic flow sensors. Tunable filtering is obtained for non-resonant electromechanical parametric amplification, applicable at a wide range of non-resonant frequencies while achieving highly selective gain of up to 20 dB.

© 2011 American Institute of Physics

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KEYWORDS and PACS

Keywords

biological fluid dynamics, biological tissues, biomimetics, electric potential, electrostatics, filtering theory, flow sensors, parametric amplifiers

PACS

  • 47.80.-v

    Instrumentation and measurement methods in fluid dynamics

  • 41.20.Cv

    Electrostatics; Poisson and Laplace equations, boundary-value problems

  • 87.90.+y

    Other topics in biological and medical physics (restricted to new topics in section 87)

  • 07.07.Df

    Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3663865

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    D. Rugar and P. Grütter, Phys. Rev. Lett. 67, 699 (1991).

    D. W. Carr, S. Evoy, L. Sekaric, H. G. Craighead, and J. M. Parpia, Appl. Phys. Lett. 77, 1545 (2000)APPLAB000077000010001545000001.


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