Self-propulsion in 2D confinement: phoretic and hydrodynamic interactions.

@article{Choudhary2021SelfpropulsionI2,
  title={Self-propulsion in 2D confinement: phoretic and hydrodynamic interactions.},
  author={Akash Choudhary and K. V. S. Chaithanya and S{\'e}bastien Michelin and S. Pushpavanam},
  journal={The European physical journal. E, Soft matter},
  year={2021},
  volume={44 7},
  pages={
          97
        }
}
Chemically active Janus particles generate tangential concentration gradients along their surface for self-propulsion. Although this is well studied in unbounded domains, the analysis in biologically relevant environments such as confinement is scarce. In this work, we study the motion of a Janus sphere in weak confinement. The particle is placed at an arbitrary location, with arbitrary orientation between the two walls. Using the method of reflections, we study the effect of confining planar… 
Oscillatory rheotaxis of active droplets in microchannels
Ranabir Dey , 2, ∗ Carola M. Buness , Babak Vajdi Hokmabad , Chenyu Jin , 3 and Corinna C. Maass 1, 4, † Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Am

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Hydrodynamics can determine the optimal route for microswimmer navigation
TLDR
The results provide insights into the role of hydrodynamics and fluctuations on optimal navigation at the microscale, and suggest that microorganisms might have survival advantages when strategically controlling their distance to remote walls.
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