Onset of transverse (shear) waves in strongly-coupled Yukawa fluids
arXiv:1902.09874 · doi:10.1063/1.5088141
Abstract
A simple practical approach to describe transverse (shear) waves in strongly-coupled Yukawa fluids is presented. Theoretical dispersion curves, based on hydrodynamic consideration, are shown to compare favorably with existing numerical results for plasma-related systems in the long-wavelength regime. The existence of a minimum wave number below which shear waves cannot propagate and its magnitude are properly accounted in the approach. The relevance of the approach beyond plasma-related Yukawa fluids is demonstrated by using experimental data on transverse excitations in liquid metals Fe, Cu, and Zn, obtained from inelastic x-ray scattering. Some potentially important relations, scalings, and quasi-universalities are discussed. The results should be interesting for a broad community in chemical physics, materials physics, physics of fluids and glassy state, complex (dusty) plasmas, and soft matter.
9 pages, 6 figures, to be published in J. Chem. Phys. (2019)
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- Ion drift instability in a strongly coupled collisional complex plasma
- Bridgman formula for the thermal conductivity of atomic and molecular liquids
- Instantaneous shear modulus of Yukawa fluids across coupling regimes
- Excess entropy of strongly coupled Yukawa fluids
- Experimental observation of gapped shear waves and liquid-like to gas-like dynamical crossover in active granular matter
- Thermal conduction in two-dimensional complex plasma layers
- Description of longitudinal modes in moderately coupled Yukawa systems with the static local field correction
- Elementary vibrational model for thermal conductivity of Lennard-Jones fluids: Applicability domain and accuracy level
- Collective excitations of rotating dusty plasma under quasi-localized charge approximation of strongly coupled systems
- Emergence of Debye scaling in the density of states of liquids under nanoconfinement
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- Variational principles for the hydrodynamics of the classical one-component plasma
- Vibrational model of entropy in dense two-dimensional fluids
- Weak decaying collective-excitation approximation for Yukawa one-component plasmas
- Heat capacity of dense liquids: A link between two-phase model and melting temperature scaling
- Modified Bridgman formula for the thermal conductivity of complex (dusty) plasma fluids
- Excess entropy scaling of the transverse sound speed in simple fluids