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We study the ionic distribution near a charged surface. A new method for performing Monte Carlo simulations in this geometry is discussed. A theory is then presented that allows us to accurately reproduce the density profiles obtained in…

化学物理 · 物理学 2012-11-09 Alexandre P. dos Santos , Yan Levin

The Poisson-Boltzmann approach gives asymptotically exact counter-ion density profiles around charged objects in the weak-coupling limit of low valency and high temperature. In this paper we derive, using field-theoretic methods, a theory…

软凝聚态物质 · 物理学 2009-10-31 Andre G. Moreira , Roland R. Netz

A simple field theory approach is developed to model the properties of charged, dielectric bodies and their associated counterions. This predictive theory is able to accurately describe the properties of systems (as compared to computer…

软凝聚态物质 · 物理学 2009-01-20 Marius M. Hatlo , Leo Lue

It is well known that the Poisson-Boltzmann (PB) equation yields the exact counterion density around charged objects in the weak coupling limit. In this paper we generalize the PB approach to account for coupling of arbitrary strength by…

软凝聚态物质 · 物理学 2007-05-23 V. Garcia-Morales , J. Cervera , J. Pellicer

We propose a strong-coupling analysis of a polarizable planar interface, in the spirit of a recently introduced Wigner-Crystal formulation. The system is made up of two moieties: a semi-infinite medium (z<0) with permittivity epsilon' while…

软凝聚态物质 · 物理学 2012-01-10 L. Samaj , E. Trizac

Strong coupling phenomena, such as the like charged macroions attraction, opposite charged macroions repulsion, charge renormalization or charge inversion, are known to be mediated by multivalent counterions. Most theories treat the…

软凝聚态物质 · 物理学 2016-02-03 Sandipan Dutta , Y. S. Jho

We study a classical system of identically charged counter-ions near a planar wall carrying a uniform surface charge density. The equilibrium statistical mechanics of the system depends on a single dimensionless coupling parameter. A new…

软凝聚态物质 · 物理学 2019-01-21 I. Palaia , M. Trulsson , L. Samaj , E. Trizac

We study equilibrium statistical mechanics of classical point counter-ions, formulated on 2D Euclidean space with logarithmic Coulomb interactions (infinite number of particles) or on the cylinder surface (finite particle numbers), in the…

软凝聚态物质 · 物理学 2011-03-08 L. Samaj , E. Trizac

We study thermal equilibrium of classical pointlike counterions confined between symmetrically charged walls at distance $d$. At very large couplings when the counterion system is in its crystal phase, a harmonic expansion of particle…

软凝聚态物质 · 物理学 2019-01-21 L. Samaj , M. Trulsson , E. Trizac

Screening of a strongly charged macroion by multivalent counterions is considered. It is shown that counterions form a strongly correlated liquid at the surface of the macroion. Cohesive energy of this liquid leads to additional attraction…

软凝聚态物质 · 物理学 2009-10-31 B. I. Shklovskii

We investigate the statistical mechanics of an inhomogeneous Coulomb fluid composed of charged particles with static polarizability. We derive the weak- and the strong-coupling approximations and evaluate the partition function in a planar…

软凝聚态物质 · 物理学 2013-04-22 Vincent Démery , David S. Dean , Rudolf Podgornik

By decomposing the Coulomb interaction into a long distance component appropriate for mean-field theory, and a nonmean-field short distance component, we compute the counterion density near a charged surface for all values of the counterion…

软凝聚态物质 · 物理学 2009-11-11 Christian D. Santangelo

The solution of the Poisson--Boltzmann equation for counterions confined between two charged plates is known analytically up to a constant, namely, the ion density in the middle of the channel. This quantity is relevant also because it…

计算物理 · 物理学 2018-09-06 Andrei Bazarenko , Marcello Sega

We reformulate the theory of strong electrostatic coupling in order to describe an asymmetric electrolyte solution of monovalent salt ions and polyvalent counterions using field-theoretical techniques and Monte-Carlo simulations. The theory…

软凝聚态物质 · 物理学 2015-05-14 Matej Kanduc , Ali Naji , Jan Forsman , Rudolf Podgornik

In the present work, we have extended a weak coupling theory [A. Bakhshandeh, A. P. dos Santos and Y. Levin Phys. Rev. Lett 107, 107801 (2011)] for systems with added 1:1 electrolyte. To study the accuracy of the developed theory, we…

软凝聚态物质 · 物理学 2020-08-18 Amin Bakhshandeh

Light scattering and viscometric measurements on weak polyelectrolytes show two important aspects of counterion condensation, namely, non-monotonic variation in the polyelectrolyte size with the increase in the electrostatic strength, and,…

统计力学 · 物理学 2014-08-12 Prasanta Kundu , Arti Dua

We present a theory of effective electrostatic interactions in polydisperse suspensions of charged macroions, generalizing to mixtures a theory previously developed for monodisperse suspensions. Combining linear response theory with a…

软凝聚态物质 · 物理学 2013-08-20 Jun Kyung Chung , Alan R. Denton

We present a personal view on the current state of statistical mechanics of Coulomb fluids with special emphasis on the interactions between macromolecular surfaces, concentrating on the weak and the strong coupling limits. Both are…

软凝聚态物质 · 物理学 2015-06-16 Ali Naji , Matej Kanduč , Jan Forsman , Rudolf Podgornik

We compare weak and strong coupling theory of counterion-mediated electrostatic interactions between two asymmetrically charged plates with extensive Monte-Carlo simulations. Analytical results in both weak and strong coupling limits…

软凝聚态物质 · 物理学 2009-05-26 M. Kanduc , M. Trulsson , A. Naji , Y. Burak , J. Forsman , R. Podgornik

Recent Monte Carlo simulations (A. G. Moreira and R. R. Netz: Eur. Phys. J. E {\bf 8} (2002) 33) in the strong Coulomb coupling regime suggest strange counterion electrostatics unlike the Poisson-Boltzmann picture: when…

软凝聚态物质 · 物理学 2020-01-07 Hiroshi Frusawa
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