Oscillatory rheotaxis of artificial swimmers in microchannels

@article{Dey2021OscillatoryRO,
  title={Oscillatory rheotaxis of artificial swimmers in microchannels},
  author={Ranabir Dey and Carola M Buness and Babak Vajdi Hokmabad and Chenyu Jin and Corinna C. Maass},
  journal={Nature Communications},
  year={2021},
  volume={13}
}
Biological microswimmers navigate upstream of an external flow with trajectories ranging from linear to spiralling and oscillatory. Such a rheotactic response primarily stems from the hydrodynamic interactions triggered by the complex shapes of the microswimmers, such as flagellar chirality. We show here that a self-propelling droplet exhibits oscillatory rheotaxis in a microchannel, despite its simple spherical geometry. Such behaviour has been previously unobserved in artificial swimmers… 

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