Abstract
Evaporation of a heated droplet of a colloid solution on structured surfaces is studied experimentally. Microscopic particles of TiO2 are added to water. The wettability of the structured surfaces varies in a wide range of the static contact angle of the droplet. Free convection in the droplet on the textured wall is compared with convection on a smooth surface. The textured wall alters both the wettability and the mean rate of convection in the liquid. Experiments aimed at studying the formation of a stable cluster of microparticles are performed on a textured surface made by means of 3D printing. The cluster is formed in the region of local heating of the droplet and consists of hexagonal cells.
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Misyura, S.Y., Bilsky, A.V., Morozov, V.S. et al. Evaporation of a Droplet of a Heated Colloid Solution on a Horizontal Structured Wall. J. Engin. Thermophys. 30, 654–660 (2021). https://doi.org/10.1134/S1810232821040081
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DOI: https://doi.org/10.1134/S1810232821040081