Cohen, ItaiMason, Thomas G.Weitz, David A.2019-10-092004Cohen, Itai, Thomas G. Mason, and David A. Weitz. 2004. “Shear-Induced Configurations of Confined Colloidal Suspensions.” Physical Review Letters93 (4): 046001. https://doi.org/10.1103/PhysRevLett.93.046001.0031-90071079-71141092-0145http://nrs.harvard.edu/urn-3:HUL.InstRepos:41511239We show that geometric confinement dramatically affects the shear-induced configurations of dense monodisperse colloidal suspensions; a new structure emerges, where layers of particles buckle to stack in a more efficient packing. The volume fraction in the shear zone is controlled by a balance between the viscous stresses and the osmotic pressure of a contacting reservoir of unsheared particles. We present a model that accounts for our observations and helps elucidate the complex interplay between particle packing and shear stress for confined suspensions.en-USJournal Article2019-10-0910.1103/PhysRevLett.93.046001