Dynamics of sessile drops on vibrating superhydrophobic and petal-effect surfaces

Fecha: 3 de marzo de 2023.
Hora: 12:00 a 13:00.
Lugar: Aula F02 de la Facultad de Ciencias de la Universidad de Granada.

Ponente: Schon Fusco (Universidad de Granada).

Organiza: Grupo de Física de Fluidos y Biocoloides del Departamento de Física Aplicada de la UGR.

Resumen: Droplet evaporation is a fundamental process that is widely used in many technological applications, including inkjet printing and spray cooling. The evaporation of droplets loaded with particles is of particular interest, as the concentration of these particles increases as the droplet evaporates, eventually leading to the formation of particle deposits at the interface upon full evaporation. To achieve different deposit patterns, it is crucial to understand and control the fundamental processes that compete in the deposition from sessile drops. The most effective method to control the deposition process is to modify the internal flow pattern. External mechanical vibrations have been shown to have a significant effect on drop evaporation behavior and particle deposition. Moreover, controlling the properties of the substrate can also impact the deposition process by providing additional control. The effect of external vibrations and surfaces with different wetting properties on drops dynamics will be discussed.