title: Fully automated digital holographic processing for monitoring the dynamics of a vesicle suspension under shear flow.
abstract: We investigate the dynamics of a vesicle suspension under shear flow between plates using DHM with a spatially reduced coherent source. Holograms are grabbed at a frequency of 24 frames/sec. The distribution of the vesicle suspension is obtained after numerical processing of the digital holograms sequence resulting in a 4D distribution. Obtaining this distribution is not straightforward and requires special processing to automate the analysis. We present an original method that fully automates the analysis and provides distributions that are further analyzed to extract physical properties of the fluid. Details of the numerical implementation, as well as sample experimental results are presented.
authors.affiliation: Service de Chimie-Physique EP, Université libre de Bruxelles, 50 Avenue F. Roosevelt, CP16/62, B-1050 Brussels, Belgium.
authors.forename: Christophe
authors.initials: C
authors.lastname: Minetti
authors.affiliation: Laboratoire Interdisciplinaire de Physique, CNRS-UMR 5588, Université Grenoble I, B.P. 87, 38402 Saint Martin d'Hères Cedex, France.
authors.forename: Thomas
authors.initials: T
authors.lastname: Podgorski
authors.affiliation: Laboratoire Interdisciplinaire de Physique, CNRS-UMR 5588, Université Grenoble I, B.P. 87, 38402 Saint Martin d'Hères Cedex, France.
authors.forename: Gwennou
authors.initials: G
authors.lastname: Coupier
authors.affiliation: Service de Chimie-Physique EP, Université libre de Bruxelles, 50 Avenue F. Roosevelt, CP16/62, B-1050 Brussels, Belgium.
authors.forename: Frank
authors.initials: F
authors.lastname: Dubois
keywords: (090.0090) Holography; (090.1995) Digital holography; (100.0100) Image processing; (100.2000) Digital image processing; (100.6890) Three-dimensional image processing; (170.6900) Three-dimensional microscopy