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Stresslets Induced by Active Swimmers.

Eric Lauga1, Sébastien Michelin2

  • 1Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 0WA, United Kingdom.

Physical Review Letters
|October 15, 2016
PubMed
Summary
This summary is machine-generated.

We developed a new method to calculate the stresslets of active particles, which are disturbances in fluid dynamics. This allows for better control over artificial swimmers and their collective behaviors in complex fluids.

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Area of Science:

  • Fluid dynamics
  • Active matter physics
  • Soft matter science

Background:

  • Active particles create disturbances as stresslets, influencing collective dynamics.
  • Determining stresslets for arbitrary geometries is challenging due to theoretical limitations.

Purpose of the Study:

  • To propose a general theoretical framework for computing stresslets of active particles.
  • To enable precise control over the collective motion of artificial swimmers.

Main Methods:

  • Utilizing the reciprocal theorem of Stokes flows.
  • Calculating stresslets by integrating particle surface velocities.

Main Results:

  • Successfully applied the method to spheroidal chemically active particles.
  • Demonstrated a pathway to compute stresslets for complex geometries.

Conclusions:

  • The proposed method provides a versatile tool for active matter research.
  • Enables tuning of artificial swimmer properties for tailored collective behaviors in diverse environments.