Polarization of active Janus particles
Langue
en
Article de revue
Ce document a été publié dans
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics. 2014, vol. 89, p. 050303
American Physical Society
Résumé en anglais
We theoretically study the motion of surface-active Janus particles, driven by an effective slip velocity due to a non-uniform temperature or concentration field ψ. With parameters realized in thermal traps, we find that ...Lire la suite >
We theoretically study the motion of surface-active Janus particles, driven by an effective slip velocity due to a non-uniform temperature or concentration field ψ. With parameters realized in thermal traps, we find that the torque exerted by the gradient ∇ψ inhibits rotational diffusion and favors alignment of the particle axes. In a swarm of active particles, this polarization adds a novel term to the drift velocity and modifies the collective behavior. Self-polarization in a non-uniform laser beam could be used for guiding hot particles along a given trajectory.< Réduire
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