Shear viscosity of strongly-coupled two-dimensional yukawa liquids: Experiment and modeling

Z. Donkó, P. Hartmann, J. Goree

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

This paper reviews experimental and modeling efforts aimed at the determination of the shear viscosity of strongly-coupled Yukawa liquids. After briefly reviewing prior work on three-dimensional (3D) systems, recent experimental and computer simulation studies of two-dimensional (2D) settings are presented in detail. In the experiments two counterpropagating laser beams were used to perturb a dusty plasma monolayer and monitoring of the velocity field reconstructed from particle trajectories allowed the determination of the shear viscosity with the aid of an analytical model. Subsequent computer simulations based on the molecular dynamics approach resulted in velocity profiles which are in very good agreement with the experimental ones. Further simulation studies of idealized 2D Yukawa liquids (in which gas friction is neglected) gave results for the shear viscosity over a wide range of system parameters and demonstrated the existence of the shear thinning effect (non-Newtonian behavior) of the liquid at high shear rates.

Original languageEnglish
Pages (from-to)1357-1376
Number of pages20
JournalModern Physics Letters B
Volume21
Issue number21
DOIs
Publication statusPublished - Sep 10 2007

Keywords

  • Shear viscosity
  • Strongly-coupled plasma
  • Yukawa liquid

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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