Self-similarity in particle accumulation on the advancing meniscus

Abstract

Abstract

Particulate suspension coating of capillary tubes

“…The flow of a suspension plug in a capillary tube presents a key difference with the dip coating: the shear-induced migration of the particles, [48][49][50] and a ''fountain-flow'' where particles are more concentrated at the front meniscus. 41,[51][52][53][54] Indeed, the flow of a plug in a cylindrical channel is a shear flow where the particles migrate from high shear stress to low shear stress region. 48 As a result the volume fraction of particles is not constant along a cross-section of the tube, but instead larger at the center and smaller near the outer wall.…”