Active Particles Powered by Quincke Rotation in a Bulk Fluid.
Lauga, Eric Lauga
Physical review letters
American Physical Society
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Das, D., & Lauga, E. L. (2019). Active Particles Powered by Quincke Rotation in a Bulk Fluid.. Physical review letters, 122 (19), 194503. https://doi.org/10.1103/physrevlett.122.194503
Dielectric particles suspended in a weakly conducting fluid are known to spontaneously start rotating under the action of a sufficiently strong uniform DC electric field due to the Quincke rotation instability. This rotation can be converted into translation when the particles are placed near a surface providing useful model systems for active matter. Using a combination of numerical simulations and theoretical models, we demonstrate that it is possible to convert this spontaneous Quincke rotation into spontaneous translation in a plane perpendicular to the electric field in the absence of surfaces by relying on geometrical asymmetry instead.
ECH2020 EUROPEAN RESEARCH COUNCIL (ERC) (682754)
External DOI: https://doi.org/10.1103/physrevlett.122.194503
This record's URL: https://www.repository.cam.ac.uk/handle/1810/292334
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