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- Minerva González-Melchor, E. Mayoral, María Eugenia Velázquez, J. L. Alejandre
- The Journal of chemical physics
- 2006

The electrostatic interactions in dissipative particle dynamics (DPD) simulations are calculated using the standard Ewald [Ann. Phys. 64, 253 (1921)] sum method. Charge distributions on DPD particles are included to prevent artificial ionic pair formation. This proposal is an alternative method to that introduced recently by Groot [J. Chem. Phys. 118, 11265… (More)

- E. Mayoral, Alberto Robledo
- Physical review. E, Statistical, nonlinear, and…
- 2005

We uncover the basis for the validity of the Tsallis statistics at the onset of chaos in logistic maps. The dynamics within the critical attractor is found to consist of an infinite family of Mori's q -phase transitions of rapidly decreasing strength, each associated with a discontinuity in Feigenbaum's trajectory scaling function sigma. The value of q at… (More)

- A Hernandez-Machado, Ana Maria Lacasta, E. Mayoral, Eugenia Corvera Poiré
- Physical review. E, Statistical, nonlinear, and…
- 2003

A one-sided phase-field model is proposed to study the dynamics of unstable interfaces of Hele-Shaw flows in the high viscosity contrast regime. The corresponding macroscopic equations are obtained by means of an asymptotic expansion from the phase-field model. Numerical integrations of the phase-field model in a rectangular Hele-Shaw cell reproduce finger… (More)

- E. Mayoral, Armando Gama Goicochea
- The Journal of chemical physics
- 2013

The interfacial tension between organic solvents and water at different temperatures is predicted using coarse-grained, mesoscopic Dissipative Particle Dynamics (DPD) simulations. The temperature effect of the DPD repulsive interaction parameters, aij, for the different components is calculated from the dependence of the Flory-Huggins χ parameter on… (More)

- Armando Gama Goicochea, E. Mayoral, Jaime Klapp, Claudio Pastorino
- Soft matter
- 2014

We undertake the investigation of sheared polymer chains grafted onto flat surfaces to model liposomes covered with polyethylene glycol brushes as a case study for the mechanisms of efficient drug delivery in biologically relevant situations, for example, as carriers for topical treatments of illnesses in the human vasculature. For these applications,… (More)

- E. Mayoral, Armando Gama Goicochea
- Soft matter
- 2014

Interfaces involving coexisting phases in condensed matter are essential in many phenomena: wetting, nucleation, morphology, phase separation kinetics, membranes, phase coexistence in nanomaterials, etc. The majority of analytical theories available use concepts derived from mean field artifacts which do not describe adequately these systems. Satisfactory… (More)

We study the dynamics of iterates at the transition to chaos in the logistic map and find that it is constituted by an infinite family of Mori’s q-phase transitions. Starting from Feigenbaum’s σ function for the diameters ratio, we determine the atypical weak sensitivity to initial conditions ξt associated to each q-phase transition and find that it obeys… (More)

- E. Mayoral, Jaime Klapp, Armando Gama Goicochea
- Physical review. E
- 2017

Nonequilibrium coarse-grained, dissipative particle dynamics simulations of complex fluids, made up of polymer brushes tethered to planar surfaces immersed in a solvent yield nonmonotonic behavior of the friction coefficient as a function of the polymer grating density on the substrates, Γ, while the viscosity shows a monotonically increasing dependence on… (More)

We examine both the dynamical and the multifractal properties at the chaos threshold of logistic maps with general nonlinearity z > 1. First we determine analytically the sensitivity to initial conditions ξt. Then we consider a renormalization group (RG) operation on the partition function Z of the multifractal attractor that eliminates one half of the… (More)

- E. Mayoral, E. Nahmad-Achar
- The Journal of chemical physics
- 2012

The study of the modification of interfacial properties between an organic solvent and aqueous electrolyte solutions is presented by using electrostatic dissipative particle dynamics (DPD) simulations. In this article, the parametrization for the DPD repulsive parameters a(ij) for the electrolyte components is calculated considering the dependence of the… (More)