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arXiv · 1401.7833

Polarization of active Janus particles

Thomas Bickel·Guillermo Zecua·Alois Würger
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Abstract

We study the collective motion of Janus particles in a temperature or concentration gradient. Because of the torque exerted by an external or self-generated field, the particles align their axis on this gradient. In a swarm of self-driven particles, this polarization enhances the interactiondriven confinement. Self-polarization in a non-uniform laser beam could be used for guiding hot particles along a given trajectory.

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Thomas Bickel, Guillermo Zecua, Alois Würger. 2014-01-30. Polarization of active Janus particles. https://doi.org/10.1103/physreve.89.050303

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