Flow pattern in the vicinity of self-propelling hot Janus particlesReport as inadecuate




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1 LOMA - Laboratoire Ondes et Matière d-Aquitaine 2 Soft Matter Theory 3 ZHS - Zentrum für Höhere Studien

Abstract : We study the temperature field and the resulting flow pattern in the vicinity of a heated metal-capped Janus particle. If its thickness exceeds about 10 nm, the cap forms an isotherm and the flow pattern comprises a quadrupolar term that decays with the square of the inverse distance ∼r−2. For much thinner caps the velocity varies as ∼r−3. These findings could be relevant for collective effects in dense suspensions and for the circular tracer motion observed recently in the vicinity of a tethered Janus particle.





Author: Thomas Bickel - Arghya Majee - Alois Würger -

Source: https://hal.archives-ouvertes.fr/



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