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Article Dans Une Revue EPL - Europhysics Letters Année : 1988

Free-Surface Instability and Stratification of Critical Microemulsions

Résumé

We have studied the influence of temperature gradients on the concentration distribution in a microemulsion neax a consolute critical point. Temperature inhomogeneities much smaller than the distance to the critical temperature trigger convective flows along the free surface (liquid-vapour interface) and are the cause of a considerable stratification of the bulk sample. All these phenomena disappear if the vapour phase on top of the sample is replaced by a solid phase. We propose an explanation involving a thermodiffusion-induced superficial concentration gradient and the resulting Marangoni convection.
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hal-04186366 , version 1 (23-08-2023)

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B Pouligny, Frédéric Nallet. Free-Surface Instability and Stratification of Critical Microemulsions. EPL - Europhysics Letters, 1988, 6 (4), pp.341-347. ⟨10.1209/0295-5075/6/4/011⟩. ⟨hal-04186366⟩

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