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...

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...

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...

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...

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...

We study the propagation of elastic perturbations in magneto-rheological slurries of iron particles dispersed in glycerine. The complexity of these systems is revealed in the fibrillar structure acquired under the application of a magnetic field. Recently, it has been reported the observation of...

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...

Small-angle neutron scattering (SANS) measurements are made on a three-component isometric (equal volume fractions of water and oil) microemulsion system, composed of AOT/water (0.4% NaCl)/D-octane, in the one-phase channel near the three-phase region at and around the hydrophile-lipophile...

Water soluble porphyrins bearing charged groups can be fostered to aggregate by simply screening the repulsive interactions between side-groups with the same charge. We have extensively studied the aggregation of synthetic porphyrins, which on changing the ionic strength give mesoscopic...