We analyze the dynamics of a paramagnetic, dipolar molecule in a generic “magneto-electrostatic” trap where both magnetic and electric fields may be present. The potential energy that governs the dynamics of the molecules is found using a reduced molecular model that incorporates the main features of the system. We discuss the shape of the trapping potentials for different field geometries, as ...

The current clinical standard for quantifying sleep physiology is the laboratory polysomnogram, from which basic sleep-wake stages are determined. However, the complexity of sleep physiology has inspired alternative metrics that are providing additional insights into the rich dynamics of sleep. Electro-encephalography, magneto-encephalography, and functional magnetic resonance imaging represent...

Magneto-optical methods allow us to observe the dynamics of domain wall motion, but this is intrinsically a very noisy process. We discuss a new method allowing us to reduce the measurement noise, taking advantage of the acquisition of a whole temporal sequence of images. The resulting avalanche distributions give interesting hints as to the magnetization dynamics, but are strongly dependent on...

The magneto-induced stress and relative microstructure in a colloidal suspension of paramagnetic and superparamagnetic particles dispersed in a ferrofluid medium is studied using particle-level dynamics simulation. It shows that the stress perpendicular to the direction of an external uniaxial magnetic field can be strongly enhanced by increasing the ratio of paramagnetic particles to approachi...

The competition of charge, orbital, and ferromagnetic interactions in lay-ered manganites is investigated by magneto-Raman scattering spectroscopy. We find that the colossal magnetoresistance effect in the layered compounds results from the interplay of the orbital and ferromagnetic double-exchange correlations. Inelastic scattering by charge-order fluctuations dominates the quasiparticle dynam...

X iv :1 00 3. 29 99 v1 [ ph ys ic s. fl udy n] 1 5 M ar 2 01 0 Mathematical properties of the Navier-Stokes dynamical system for incompressible Newtonian fluids Massimo Tessarotto, Claudio Asci, Claudio Cremaschini, Alessandro Soranzo and Gino Tironi Department of Mathematics and Informatics, University of Trieste, Italy Consortium for Magneto-fluid-dynamics, University of Trieste, Italy Intern...

Abstract In this work, the effects of externally applied axial pressure gradients and transverse magnetic fields on electrokinetic energy conversion (EKEC) efficiency streaming potential nanofluids through a microannulus are studied. The analytical solution for electro-magneto-hydro-dynamic (EMHD) flow is obtained under condition Debye-Hückel linearization. Especially, Green’s function method u...

By means of a dynamical ansatz, we study the breathing dynamics in systems of trapped interacting particles in a unified context, including a wide range of power law interactions and interaction strengths, at linear and non linear levels. We present detailed numerical tests of the general theory, and, motivated by Magneto-Optical Traps modeling, we extend it to the case of space dependent frict...

Slow-moving landslides affect proximal infrastructures and communities, often causing extensive economic loss. While many of these exhibit slow episodic sliding for decades or more, they sometimes accelerate rapidly fail catastrophically. Although it is known that the landslide dynamics are controlled by hydro-mechanical processes, few analytical models enable a versatile incorporation inelasti...