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Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2013

Flow pattern in the vicinity of self-propelling hot Janus particles

Résumé

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.
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Dates et versions

hal-00840655 , version 1 (04-07-2013)

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Paternité - Pas d'utilisation commerciale

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Thomas Bickel, Arghya Majee, Alois Würger. Flow pattern in the vicinity of self-propelling hot Janus particles. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2013, 88 (1), pp.012301 (1-6). ⟨10.1103/PhysRevE.88.012301⟩. ⟨hal-00840655⟩

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