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Magnetically-actuated artificial cilium: a simple theoretical model

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Abstract

We propose a theoretical model for a magnetically-actuated artificial cilium in a fluid environment and investigate its dynamical behaviour, using both analytical calculations and numerical simulations. The cilium consists of a spherical soft magnet, a spherical hard magnet, and an elastic spring that connects the two magnetic components. Under a rotating magnetic field, the cilium exhibits a transition from phase-locking at low frequencies to phase-slipping at higher frequencies. We study the dynamics of the magnetic cilium in the vicinity of a wall by incorporating its hydrodynamic influence, and examine the efficiency of the actuated cilium in pumping viscous fluids. This cilium model can be helpful in a variety of applications such as transport and mixing of viscous solutions at small scales and fabricating microswimmers.

Graphical abstract: Magnetically-actuated artificial cilium: a simple theoretical model

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Publication details

The article was received on 18 Dec 2018, accepted on 17 Mar 2019 and first published on 19 Mar 2019


Article type: Paper
DOI: 10.1039/C8SM02561D
Citation: Soft Matter, 2019, Advance Article
  • Open access: Creative Commons BY license
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    Magnetically-actuated artificial cilium: a simple theoretical model

    F. Meng, D. Matsunaga, J. M. Yeomans and R. Golestanian, Soft Matter, 2019, Advance Article , DOI: 10.1039/C8SM02561D

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