Isothermal Evaporation of a Thin Liquid Droplet on Porous Surfaces: Measurements of Thicknesses by the Schlieren MethodстатьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 22 апреля 2026 г.
Аннотация:This study examines the evaporation of sessile droplets at the final stage, when the contact angle is less than 20deg and the droplet has become thin. The investigation is conducted on low-reflective porous surfaces, namely robust black silicon with a TiO coating and a glass plate coated with graphite. The high-speed Schlieren technique with a graded filter was employed to measure thicknesses down to 2 microns. The characteristics of non-volatile water and volatile ethanol thin liquid films were visualized. It was observed that the structure of surfaces and the type of liquid play a crucial role in the dynamics and rupture of thin liquid films.