Journal article
Viscoelastic response of Yukawa liquids
Physical review. E, Statistical, nonlinear, and soft matter physics, Vol.81(5 Pt 2), pp.056404-056404
05/2010
DOI: 10.1103/PhysRevE.81.056404
PMID: 20866341
Abstract
The viscoelastic properties of strongly coupled Yukawa liquids are characterized by computing the complex shear viscosity η(ω) . This is done using three methods of molecular-dynamics simulation: equilibrium, nonequilibrium, and Langevin dynamics, all with a mutually repulsive Yukawa interparticle potential. A change from viscous to elastic response is observed with increasing frequency, as well as a decrease of the magnitude of the viscosity with increasing frequency. The Langevin simulation reveals that the dependence of the complex viscosity on the friction has a different character for hot and cool liquids. At ω=0 , we find that as friction increases, the viscosity diminishes at high temperature but increases at low temperature. In addition to finding its frequency dependence, we also derive the wave-number (length-scale) dependence of the shear viscosity.
Details
- Title: Subtitle
- Viscoelastic response of Yukawa liquids
- Creators
- Z Donkó - Hungarian Academy of SciencesJ Goree - University of IowaP Hartmann - Hungarian Academy of Sciences
- Resource Type
- Journal article
- Publication Details
- Physical review. E, Statistical, nonlinear, and soft matter physics, Vol.81(5 Pt 2), pp.056404-056404
- DOI
- 10.1103/PhysRevE.81.056404
- PMID
- 20866341
- NLM abbreviation
- Phys Rev E Stat Nonlin Soft Matter Phys
- ISSN
- 1539-3755
- eISSN
- 1550-2376
- Publisher
- American Physical Society
- Language
- English
- Date published
- 05/2010
- Academic Unit
- Physics and Astronomy; Mechanical Engineering
- Record Identifier
- 9984199953202771
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