We have used the thermodynamical description of a chemical reaction as a diffusion process along an internal coordinate to analyze fluctuations in the density of the constituents, which are treated under the framework of fluctuating hydrodynamics. We then obtain a Langevin equation for the...

We have analyzed the implications of the energy of anisotropy of a ferromagnetic sphere suspended in a carrier fluid in its dynamics. The rotational viscosity, which for a particular geometry represents the increase of the viscosity of the system due to the presence of an external magnetic...

We analyze the effect of an external flow on the rheological and magnetic properties of a suspension of non-interacting magnetic dipoles in a Newtonian non-polar fluid (ferrofluid). The friction for a dipole moving through this fluid, which is in a state of elongational flow, is computed. A...

By considering an ensemble of Brownian particles suspended in a heat bath as a thermodynamic system with an internal degree of freedom it is possible to obtain the Fokker-Planck equation for Brownian motion in a temperature gradient, by applying the scheme of non-equilibrium thermodynamics. We...

The methods of non-equilibrium thermodynamics of systems with an interface have been applied to the study of thermionic emission processes in abrupt semiconductor junctions, including the effects of surface states. Our analysis covers different situations of interest, concerning unipolar and...

A method of induced forces and torques is employed to study brownian motion of a particle in a fluid with internal angular momentum (spin). One derives generalized Faxén theorems for the force and torque exerted on the particle. In the Landau-Lifshitz approach, one obtains...

The dynamic structure factor of a suspension moving through a fluid with spin (suspension of dipolar particles in the continuum limit) is computed. Two situations are treated, namely when the system is in equilibrium and when a velocity gradient is present. In the first case we get a correction...

We show the existence of intermittent dynamics in one of the simplest model of a glassy system: the two-state model, which has been used [Physica A 329 (2003) 357] to explain the origin of the violation of the fluctuation–dissipation theorem. The dynamics is analyzed through a Langevin...