Low Reynolds number propulsion: rotation-translation coupling and the role of symmetry

@inproceedings{Sachs2017LowRN,
  title={Low Reynolds number propulsion: rotation-translation coupling and the role of symmetry},
  author={Johannes Sachs and Konstantin I. Morozov and Tian Yi Qiu and Nico Segreto and Alexander M. Leshansky and Peer Fischer},
  year={2017}
}
Viscous drag is dominant for an object's propulsion at low Reynolds numbers. One strategy to generate locomotion is rotation-translation coupling, for instance by applying torque to a chiral helix. Here, we theoretically and experimentally investigate if rotation-translation coupling is only found in chiral structures. Symmetry considerations reveal that a dipolar (magnetic or electric) moment can render simple objects chiral. For certain orientations of the dipolar moment, however, a structure… CONTINUE READING

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