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Experimental Droplet Study of Inverted Marangoni Effect of a Binary Liquid Mixture on a Nonuniform Heated Substrate

Abstract : We present an experimental study on the inversion of the Marangoni effect of a binary mixture droplet under a horizontal temperature gradient. In particular, we studied the dynamics and the evaporation behavior under these conditions. We show that a binary mixture (97% water–3% butanol) droplet has a tendency to migrate to warmer areas, as opposed to spreading in pure fluids. During the evaporation process, we distinguish three stages of evaporation that are correlated to the dynamics of the droplet.
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Submitted on : Wednesday, November 24, 2021 - 1:20:02 PM
Last modification on : Thursday, November 25, 2021 - 3:45:36 AM

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Safouene Ouenzerfi, Souad Harmand. Experimental Droplet Study of Inverted Marangoni Effect of a Binary Liquid Mixture on a Nonuniform Heated Substrate. Langmuir, American Chemical Society, 2016, 32 (10), pp.2378-2388. ⟨10.1021/acs.langmuir.5b04539⟩. ⟨hal-03446574⟩

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