Resumo

MAC INTYRE, J. R.; GOMBA, J. M.  e  PERAZZO, C. A.. Driven droplets by thermocapillary effect: quadratic dependence of the surface tension on the temperature. An. AFA [online]. 2020, vol.31, n.3, pp.107-111. ISSN 0327-358X.

We study the migration of droplets on a solid surface which is under a uniform temperature gradient. The present article focus on partial wetting fluids which surface tension depends on the squared temperature. These type of liquids, called self-rewetting, show a complex dynamics and here we will compare with those liquids of linear dependence in the temperature. Unlike to the latter ones, the droplet width increases with the time.

Palavras-chave : Marangoni effect; non-monotonic dependence of surface tension; partial wetting condition.

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