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.

中文翻译：

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水平结构壁上加热胶体溶液液滴的蒸发

摘要

实验研究了胶体溶液在结构化表面上的加热液滴的蒸发。TiO _{2 的}微观颗粒被添加到水中。结构化表面的润湿性在液滴静态接触角的宽范围内变化。纹理壁上液滴中的自由对流与光滑表面上的对流进行了比较。带纹理的壁会改变液体中的润湿性和平均对流速率。旨在研究稳定的微粒簇形成的实验是在通过 3D 打印制成的纹理表面上进行的。团簇形成于液滴局部加热区域，由六边形单元组成。