Effect of relative humidity on the evaporation of a colloidal solution droplet

International audienceBackground The deposition of uniform layers of colloids on a solid surface is a major challenge for several industrial processes such as glass surface treatment and creating optical filters. One strategy involves the deposition of the colloids behind a contact line that recedes due to hydrodynamic reasons and evaporation (drying). The interaction between deposition, evaporation and hydrodynamics is a complex matter. We need to get a better understanding of the mechanisms at the contact line and the role they play in coating an organized deposit [1]