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Physical Review E

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Breath figures of two immiscible substances on a repellent surface

J. Guadarrama-Cetina and W. González-Viñas

Department of Physics and Applied Mathematics, University of Navarra, Navarra, Spain

Phys. Rev. E 87, 054401 – Published 20 May, 2013

DOI: https://doi.org/10.1103/PhysRevE.87.054401

Abstract

The understanding of the competition between different substances while condensing on a cold surface is of high interest in situations in which it is desirable to control their condensation rates and the formed morphologies. We do the experiments for mixtures of water and hexamethyldisiloxane vapors at several concentrations. The dropwise condensation of the vapors forms breath figures on a substrate that is repellant to both substances. We report the average radius of the drops for each specie as a function of time. Also, we pay attention to the evolution of the corresponding morphologies and the appearance of hybrid clusters.

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