Fig. 2: Effect of slip platelet dynamics.
From: Hydrodynamic slip can align thin nanoplatelets in shear flow
a Top: according to our theory, a platelet with large hydrodynamic slip initially aligned with the flow will rotate in the opposite direction from that of the vorticity of the undisturbed flow and towards a stable inclination angle αc. Bottom: time evolution of orientation angle α from dynamic MD simulation of a freely suspended graphene bilayer, with half length a = 1.7 nm, aspect ratio b/a = 0.25, and slip length λ = (60 ± 5) nm. b Top: according to Jeffery’s theory, a platelet initially aligned with the flow will rotate continuously and in the same direction as the vorticity of the flow. Bottom: orientation angle α from MD simulation of a freely suspended no-slip platelet, with half length a = 1.8 nm, aspect ratio b/a = 0.2 and slip length λ ≈ 0.
