Structure of Electrorheological Fluids
U. Dassanayake, S. Fraden, A. van Blaaderen
Abstract
Specially synthesized silica colloidal spheres with fluorescent cores were used as model electrorheological fluids to experimentally explore structure formation and evolution under conditions of no shear. Using Confocal Scanning Laser Microscopy we measured the location of each colloid in three dimensions. We observed an equilibrium body-centered tetragonal phase and several non-equilibrium structures such as sheet-like labyrinths and isolated chains of colloids. The formation of non-equilibrium structures was studied as a function of the volume fraction, electric field strength and starting configuration of the colloid. We compare our observations to previous experiments, simulations and calculations.
Create a lesson
Related papers
Potential energy release rate for solids with bounded domains during evolutions involving changes to boundaries and boundary data
Mrityunjay Kothari, Sayaka Kochiyama, Haneesh Kesari
Arrested phase separation and amorphous patterns in charged binary fluids
Logan H. Grant, Ana Bensabat, Eva Pospivsilova et al.
Shear-driven arrest of dip-coating film entrainment
Theo Witkamp, Stéphane Zaleski, Federico Toschi
How Fluctuations Control Chiral Symmetry Breaking in Reacting Mixtures of Chiral Molecules
Leonardo Silva-Dias, Christoph A. Weber
A new device for live cell imaging of biological samples under in-plane shear
Sidharth Kumar Das, Lyova Mamoyan, Eberhard Bodenschatz et al.
Imbibition dynamics under dissolution-driven fluid thickening
H. W. Almeida, A. F. V. Matias, R. C. V. Coelho et al.