Coffee stain effect on a fibre from axisymmetric droplets

The so-called coffee stain effect has been intensively studied over the past decades, but most of studies are focused on sessile droplets. In this paper, we analyse origin difference between deposition suspended particles in a drop and an axisymmetric deposited fibre. First, model shape fibre its evaporative flux with some approximations to derive analytical calculations. Then, for pinned contact lines, solve hydrodynamics equations liquid phase under lubrication approximation determine flow velocity toward lines. We comment these results by comparison similar evaporating conditions, show that substrate curvature plays role line depinning, local flux, field. competition advection Brownian motion indicates transport occurs volume localised close vicinity lines Thus, geometry induces weaker accumulation at compared drop, leading more homogeneous deposit observed experimentally.