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相关论文: Computing Counterion Densities at Intermediate Cou…

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We explore structural correlations of strongly asymmetric mixtures of binary charged colloids within the primitive model of electrolytes considering large charge and size ratios of 10 and higher. Using computer simulations with explicit…

软凝聚态物质 · 物理学 2022-07-13 Elshad Allahyarov , Hartmut Löwen , Alan Denton

We present an overview of our understanding of electrostatic interactions between charged macromolecular surfaces mediated by mobile counter- and coions. The dichotomy between the weak and the strong coupling regimes is described in detail…

软凝聚态物质 · 物理学 2016-12-21 Ali Naji , Matej Kanduc , Roland R. Netz , Rudolf Podgornik

Within a mean field treatment of the interaction between two oppositely charged plates in a salt free solution, the distance at which a transition from an attractive to a repulsive regime appears can be computed analytically. The mean field…

统计力学 · 物理学 2011-09-02 Fabien Paillusson , Emmanuel Trizac

We present a comprehensive study of the two dimensional one component plasma in the cell model with charged boundaries. Departing from weak couplings through a convenient approximation of the interacting potential we were able to obtain an…

统计力学 · 物理学 2015-10-28 Juan Pablo Mallarino , Gabriel Tellez

We present general arguments for the importance, or lack thereof, of the structure in the charge distribution of counterions for counterion-mediated interactions between bounding symmetrically charged surfaces. We show that on the mean…

软凝聚态物质 · 物理学 2015-05-13 M. Kanduc , A. Naji , Y. S. Jho , P. A. Pincus , R. Podgornik

We examine the effective counterion-mediated electrostatic interaction between two like-charged dielectric cylinders immersed in a continuous dielectric medium containing neutralizing mobile counterions. We focus on the effects of image…

软凝聚态物质 · 物理学 2015-05-18 Matej Kanduc , Ali Naji , Rudolf Podgornik

This work contributes to the problem of determining effective interaction between asymmetrically (likely or oppositely) charged objects whose total charge is neutralized by mobile pointlike counter-ions of the same charge, the whole system…

统计力学 · 物理学 2015-06-22 L. Samaj , E. Trizac

The equilibrium density profiles in a classical multicomponent plasma near a hard wall made with a dielectric material characterized by a relative dielectric constant $\ew$ are studied from the first Born-Green-Yvon equation combined with…

统计力学 · 物理学 2007-05-23 Jean-Noel Aqua , Francoise Cornu

Conformational properties of a single flexible polyelectrolyte chain in a poor solvent are studied using constant temperature molecular dynamics simulation. The effects of counterions are explicitly taken in to account. Structural…

统计力学 · 物理学 2012-12-04 Anoop Varghese , Satyavani Vemparala , R. Rajesh

We investigate the ion distribution and overcharging at charged interfaces with dielectric inhomogeneities in the presence of asymmetric electrolytes containing polyvalent and monovalent ions. We formulate an effective "dressed counterion"…

软凝聚态物质 · 物理学 2015-03-17 Matej Kanduc , Ali Naji , Jan Forsman , Rudolf Podgornik

The effect of fixed discrete colloidal charges in the primitive model is investigated for spherical macroions. Instead of considering a central bare charge, as it is traditionally done, we distribute \textit{discrete} charges randomly on…

软凝聚态物质 · 物理学 2009-10-31 Rene Messina , Christian Holm , Kurt Kremer

Despite decades of intensive studies, the effective interactions between strongly charged colloids still remain elusive. Here we show that a strongly charged surface with a layer of condensed counter- ions behaves effectively as a…

软凝聚态物质 · 物理学 2011-07-12 Xiangjun Xing , Zhenli Xu , Hongru Ma

For inhomogeneous classical Coulomb fluids in thermal equilibrium, like the jellium or the two-component Coulomb gas, there exists a variety of exact sum rules which relate the particle one-body and two-body densities. The necessary…

软凝聚态物质 · 物理学 2013-10-09 Ladislav Samaj

A simple model is presented for the appearance of attraction between two like charged polyions inside a polyelectrolyte solution. The polyions are modeled as rigid cylinders in a continuum dielectric solvent. The strong electrostatic…

软凝聚态物质 · 物理学 2009-10-31 Alexandre Diehl , Humberto A. Carmona , Yan Levin

We study the distribution of multivalent counterions next to a dielectric slab, bearing a quenched, random distribution of charges on one of its solution interfaces, with a given mean and variance, both in the absence and in the presence of…

软凝聚态物质 · 物理学 2015-06-22 Ali Naji , Malihe Ghodrat , Haniyeh Komaie-Moghaddam , Rudolf Podgornik

The energy dependence and intensity of Coulomb interaction between quasiparticles in metallic wires is obtained from two different methods: determination of the temperature dependence of the phase coherence time from the magnetoresistance,…

介观与纳米尺度物理 · 物理学 2009-11-10 B. Huard , A. Anthore , F. Pierre , H. Pothier , Norman O. Birge , D. Esteve

A binary mixture of oppositely charged components confined to a plane such as cationic and anionic lipid bilayers may exhibit local segregation. The relative strength of the net short range interactions, which favors macroscopic…

软凝聚态物质 · 物理学 2009-11-11 Sharon M. Loverde , Yury S. Velichko , Monica Olvera de la Cruz

We propose a mean-field analytical model to account for the observed asymmetry in the ability to form long-range attraction by the negatively charged colloidal particles and not their equivalently charged positive counterpart. We conjecture…

软凝聚态物质 · 物理学 2009-11-13 William Kung , Monica Olvera de la Cruz

We report results from a molecular dynamics (MD) simulation on the conformations of a long flexible polyelectrolyte complexed to a charged sphere, \textit{both negatively charged}, in the presence of neutralizing counterions in the strong…

软凝聚态物质 · 物理学 2009-11-07 Rene Messina , Christian Holm , Kurt Kremer

The screened Coulomb interaction between a pair of infinite parallel planes with spatially varying surface charge is considered in the limit of small electrical potentials for arbitrary Debye lengths. A simple expression for the disjoining…

经典物理 · 物理学 2017-04-12 Sandip Ghosal , John D. Sherwood