Navegação Ciências Exatas e da Terra por Autor "Frydel, Derek"
Resultados 1-8 de 8
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Charge regulation of colloidal particles : theory and simulations
Bakhshandeh, Amin; Frydel, Derek; Diehl, Alexandre; Levin, Yan (2019) [Artigo de periódico]To explore charge regulation (CR) in physicochemical and biophysical systems, we present a model of colloidal particles with sticky adsorption sites which account for the formation of covalent bonds between the hydronium ... -
A close look into the excluded volume effects within a double layer
Frydel, Derek; Levin, Yan (2012) [Artigo de periódico]We explore the effect of steric interaction on the ionic density distribution near a charged hard wall. For weakly charged walls, small particles, and monovalent ions, the mean-field Poisson-Boltzmann equation provides an ... -
Lattice-gas model of a charge regulated planar surface
Gómez-Bustos, Daniel Alejandro; Frydel, Derek; Levin, Yan (2021) [Artigo de periódico]In this work, we consider a lattice-gas model of charge regulation with electrostatic interactions within the Debye–Hückel level of approximation. In addition to long-range electrostatic interactions, the model incorporates ... -
Polarizable Poisson–Boltzmann equation : the study of polarizability effects on the structure of a double layer
Frydel, Derek (2011) [Artigo de periódico]We incorporate ion polarizabilities into the Poisson–Boltzmann equation by modifying the effective dielectric constant and the Boltzmann distribution of ions. The extent of the polarizability effects is controlled by two ... -
Soft-particle lattice gas in one dimension : one- and two-component cases
Frydel, Derek; Levin, Yan (2018) [Artigo de periódico]The object of the present article is a one-dimensional lattice-gas model of soft particles, wherein particles interact only if they occupy the same or a neighboring site. The model is intended as a simple representation ... -
The double-layer of penetrable ions : an alternative route to charge reversal
Frydel, Derek; Levin, Yan (2013) [Artigo de periódico]We investigate a double-layer of penetrable ions near a charged wall. We find a new mechanism for charge reversal that occurs in the weak-coupling regime and, accordingly, the system is suitable for the mean-field analysis. ... -
Thermodynamic collapse in a lattice-gas model for a two-component system of penetrable particles
Frydel, Derek; Levin, Yan (2020) [Artigo de periódico]We study a lattice-gas model of penetrable particles on a square-lattice substrate with same-site and nearestneighbor interactions. Penetrability implies that the number of particles occupying a single lattice site is ... -
Two-component Gaussian core model : strong-coupling limit, Bjerrum pairs, and gas-liquid phase transition
Frydel, Derek; Levin, Yan (2018) [Artigo de periódico]In the present work, we investigate a gas-liquid transition in a two-component Gaussian core model, where particles of the same species repel and those of different species attract. Unlike a similar transition in a ...