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Shear flows and shear viscosity in a two-dimensional Yukawa system (dusty plasma)
Journal article   Peer reviewed

Shear flows and shear viscosity in a two-dimensional Yukawa system (dusty plasma)

V Nosenko and J Goree
Physical review letters, Vol.93(15), pp.155004-155004
10/08/2004
DOI: 10.1103/PhysRevLett.93.155004
PMID: 15524893
url
https://arxiv.org/pdf/cond-mat/0502064View
Open Access

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 counterpropagating 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(-1), depending on the monolayer's parameters and shear stress applied.

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