The model of drying sessile drop of colloidal solution

TL;DR

This paper presents a numerical model describing the drying process of a colloidal droplet on a surface, focusing on the sol-gel transition and phase dynamics influenced by particle concentration.

Contribution

It introduces a novel numerical model that accounts for volume fraction-dependent physical quantities during the drying and phase transition of colloidal droplets.

Findings

The model successfully simulates the temporal evolution of solute concentration.

It captures the dynamics of the sol-gel phase transition.

Physical quantities depend on colloidal volume fraction in the model.

Abstract

We have proposed and investigated a model of drying colloidal suspension drop placed onto a horizontal substrate in which the sol to gel phase transition occurs. The temporal evolution of volume fraction of the solute and the gel phase dynamics were obtained from numerical simulations. Our model takes into account the fact that some physical quantities are dependent on volume fraction of the colloidal particles.