Showing 1 - 10 of 68
On the basis of our previous results (Physica A 220 (1995) 325) the collective mode spectrum of the Heisenberg ferrofluid model is studied in the hydrodynamic region. We start from the rigorous microscopic approach taking into account all conserved quantities and calculate the explicit...
Persistent link: https://www.econbiz.de/10010587261
A wedge-shaped iron (Fe) film system, quenched by silicone oil during deposition, has been prepared on glass substrates by direct current magnetron sputtering, and the influence of external disturbance on buckling patterns is investigated. The experiment shows that the wedge-shaped Fe film...
Persistent link: https://www.econbiz.de/10010883191
Tantalum (Ta) films deposited on glass substrates have been prepared by a direct current magnetron sputtering method, and buckling patterns induced by residual compressive stress are investigated in detail. When the film thickness increases, the buckling morphologies evolve from straight-sided...
Persistent link: https://www.econbiz.de/10010660976
I introduce two mesoscale algorithms, lattice Boltzmann and stochastic rotation dynamics, and show how they can be used to investigate the hydrodynamics of complex fluids. For each method I describe the algorithm, show that it solves the Navier–Stokes equations, and then discuss physical...
Persistent link: https://www.econbiz.de/10010873845
The denaturation of the DNA is analyzed using an analytic model. The DNA molecules are described in the Primitive Model of Polyelectrolytes (PMP), where the polyelectrolyte molecules are cylinders with charged sites. We show that the DNA stabilization arises as the result of the competition...
Persistent link: https://www.econbiz.de/10010906988
Persistent link: https://www.econbiz.de/10009282411
The occurrence of swarms of small bubbles in a variety of industrial systems enhances their performance. However, the effects that size polydispersity may produce on the stability of kinematic waves, the gain factor, mean bubble velocity, kinematic and dynamic wave velocities is, to our...
Persistent link: https://www.econbiz.de/10009282808
On the basis of a microscopic Hamiltonian on a semi-infinite cubic lattice, we derive the excess surface free energy for a confined ternary mixture of oil, water and amphiphile. Using the standard mean-field approximation for a spin-1 model we calculate the surface parameters in terms of the...
Persistent link: https://www.econbiz.de/10010588563
We propose a novel method to obtain averaged interface curvature of complex fluids from their scattered intensity without reference to any specific models. The averaged interface curvature of binary mixtures undergoing spinodal decomposition can be obtained with this method. It was found that...
Persistent link: https://www.econbiz.de/10010588579
We demonstrate with the aid of visual investigations that multiply reentrant liquid–liquid transitions can be obtained in ethyl alcohol (E)–water (W) mixtures, by the addition of ions. Multiplicity of reentrance can be tuned by changing the concentration, size, or the structure forming...
Persistent link: https://www.econbiz.de/10010591670