Shear viscosity and shear thinning in two-dimensional Yukawa liquids

TL;DR

This study investigates shear viscosity and shear thinning behavior in two-dimensional Yukawa liquids using molecular dynamics simulations, revealing viscosity reduction at high shear rates and implications for dusty plasma systems.

Contribution

It provides the first detailed simulation-based analysis of shear viscosity and shear thinning in 2D Yukawa liquids across various parameters.

Findings

Viscosity decreases with increasing shear rate at high shear rates.

Shear thinning behavior observed in 2D Yukawa liquids.

Results suggest similar effects in two-dimensional dusty plasmas.

Abstract

A two-dimensional Yukawa liquid is studied using two different nonequilibrium molecular dynamics simulation methods. Shear viscosity values in the limit of small shear rates are reported for a wide range of Coulomb coupling parameter and screening length. At high shear rates it is demonstrated that this liquid exhibits shear thinning, i.e., the viscosity $\eta$ diminishes with increasing shear rate. It is expected that two-dimensional dusty plasmas will exhibit this effect.