(450g) Direct Measurement of Suspension Structure in Pressure Driven Flow

Many non-Newtonian properties of concentrated suspensions, including shear thinning, normal stress, and shear migration, are attributed to the evolution of structural anisotropy. Investigations of this anisotropy have largely been conducted using simulations such as Stokesian Dynamics and indirect measurement via scattering. Using high speed confocal laser scanning microscopy, we directly investigate the local structure via particle tracking after structural evolution in a pressure driven flow ranging from Péclet number (the ratio of convective to diffusive forces) of 0