title: Intrinsic viscosity of a suspension of cubes.
abstract: We report on the viscosity of a dilute suspension of cube-shaped particles. Irrespective of the particle size, size distribution, and surface chemistry, we find empirically that cubes manifest an intrinsic viscosity [η]=3.1±0.2, which is substantially higher than the well-known value for spheres, [η]=2.5. The orientation-dependent intrinsic viscosity of cubic particles is determined theoretically using a finite-element solution of the Stokes equations. For isotropically oriented cubes, these calculations show [η]=3.1, in excellent agreement with our experimental observations.
authors: Department of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, USA.
authors: Rajesh K
authors: RK
authors: Mallavajula
authors: Department of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, USA.
authors: Donald L
authors: DL
authors: Koch
authors: Department of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, USA.
authors: Lynden A
authors: LA
authors: Archer