title: Lift and down-gradient shear-induced diffusion in red blood cell suspensions.
abstract: The distribution of red blood cells (RBCs) in a confined channel flow is inhomogeneous and shows a marked depletion near the walls due to a competition between migration away from the walls and shear-induced diffusion resulting from interactions between particles. We investigated the lift of RBCs in a shear flow near a wall and measured a significant lift velocity despite the tumbling motion of cells. We also provide values for the collective and anisotropic shear-induced diffusion of a cloud of RBCs, both in the direction of shear and in the direction of vorticity. A generic down-gradient subdiffusion characterized by an exponent 1/3 is highlighted.
authors.affiliation: Laboratoire Interdisciplinaire de Physique, CNRS - UMR 5588, Université Grenoble I, BP 87, 38402 Saint Martin d'Hères Cedex, France.
authors.forename: Xavier
authors.initials: X
authors.lastname: Grandchamp
authors.forename: Gwennou
authors.initials: G
authors.lastname: Coupier
authors.forename: Aparna
authors.initials: A
authors.lastname: Srivastav
authors.forename: Christophe
authors.initials: C
authors.lastname: Minetti
authors.forename: Thomas
authors.initials: T
authors.lastname: Podgorski
mesh_terms: D004058:Diffusion; D004912:Erythrocytes / Q000737:chemistry* / Q000166:cytology*; D006801:Humans; D046210:Microfluidic Analytical Techniques / Q000379:methods; D008954:Models, Biological; D033081:Shear Strength; D013535:Suspensions / Q000737:chemistry
chemical_list: D013535:Suspensions