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High Frequency Acoustic Reflectometry for Solid/Liquid Interface Characterization: Application to Droplet Evaporation

Abstract : Evolution of the local concentration in a 1 mL droplet of ethanol/water mixture during an evaporation process has been followed using high frequency acoustic reflectometry. This method has been developed for wetting characterization on micro/nanostructures and makes it possible to follow concentration evolution in a droplet deposited on a solid surface. This information gives the opportunity to predict wetting depending on surface tension linked to alcohol concentration evolution. The calibration of the method and concentration evolution in 50% and 30% ethanol droplets are presented. The evolution of a pure ethanol droplet composition is tracked so as to follow hydration process. (C) 2015 The Authors. Published by Elsevier B.V.
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Submitted on : Wednesday, July 7, 2021 - 10:59:41 AM
Last modification on : Tuesday, October 19, 2021 - 6:38:28 PM

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Julien Carlier, Malika Toubal, Sizhe Li, Pierre Campistron, Dorothée Debavelaere-Callens, et al.. High Frequency Acoustic Reflectometry for Solid/Liquid Interface Characterization: Application to Droplet Evaporation. Proceedings of the 2015 ICU International Congress on Ultrasonics, May 2015, Georgia Tech Lorraine, France. ⟨10.1016/j.phpro.2015.08.285⟩. ⟨hal-03280233⟩

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