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Fluid breakup during simultaneous two-phase flow through a three-dimensional porous medium
Sujit S. Datta, Jean-Baptiste Dupin, David A. Weitz
We use confocal microscopy to directly visualize the simultaneous flow of both a wetting and a non-wetting fluid through a model three-dimensional (3D) porous medium. We find that,…
Mobilization of a trapped non-wetting fluid from a three-dimensional porous medium
Sujit S. Datta, T. S. Ramakrishnan, David A. Weitz
We use confocal microscopy to directly visualize the formation and complex morphologies of trapped non-wetting fluid ganglia within a model 3D porous medium. The wetting fluid cont…
Expansion and rupture of charged microcapsules
Sujit S. Datta, Alireza Abbaspourrad, David A. Weitz
We study the deformations of pH-responsive spherical microcapsules -- micrometer-scale liquid drops surrounded by thin, solid shells -- under the influence of electrostatic forces.…