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Shear Flows and Shear Viscosity in a Two-Dimensional Yukawa System (Dusty Plasma)

V. Nosenko·J. Goree
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Abstract

The shear viscosity of a two-dimensional liquid-state dusty plasma was measured experimentally. A monolayer of highly charged polymer microspheres, with a Yukawa interaction, was suspended in a plasma sheath. Two counter-propagating Ar laser beams pushed the particles, causing shear-induced melting of the monolayer and a shear flow in a planar Couette configuration. By fitting the particle velocity profiles in the shear flow to a Navier-Stokes model, the kinematic viscosity was calculated; it was of order 1 mm^2/s, depending on the monolayer's parameters and shear stress applied.

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V. Nosenko, J. Goree. 2005-02-02. Shear Flows and Shear Viscosity in a Two-Dimensional Yukawa System (Dusty Plasma). https://doi.org/10.1103/physrevlett.93.155004

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