CO₂-driven diffusiophoresis in an evaporating sessile droplet.

ABSTRACT: The ability to control particle transport within evaporating droplets is important for a broad range of printing applications. However, it remains challenging to modulate the complex multiphase phenomenon to create high-quality thin films. For example, evaporation-induced capillary flows in a pinned droplet can propel particles toward the contact line, forming a characteristic ring-like pattern (also known as the "coffee-ring effect"). Previous work has shown that introducing temperature or surface tension gradients can generate Marangoni flow, which at sufficiently high magnitude can redirect the particle assembly. Here, we present an alternative approach to manipulate particle transport during evaporation via CO₂-driven diffusiophoresis. Specifically, we compare the internal f

SUBMITTER: Lee S 

PROVIDER: S-EPMC12074651 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature