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相关论文: Attraction of like-charged macroions in the strong…

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We investigate the effective interaction between two like-charged rods in the regime of large electrostatic coupling parameters using both Molecular Dynamics simulation techniques and the recently introduced strong-coupling theory. We…

软凝聚态物质 · 物理学 2009-11-11 Ali Naji , Axel Arnold , Christian Holm , Roland R. Netz

We report a mechanism which can lead to long range attractions between like-charged spherical macroions, stemming from the existence of metastable ionized states. We show that the ground state of a single highly charged colloid plus a few…

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

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

From cement cohesion to DNA condensation, a proper statistical physics treatment of systems with long range forces is important for a number of applications in physics, chemistry, and biology. We compute here the effective force between…

软凝聚态物质 · 物理学 2018-03-14 E. Trizac , G. Téllez

We are interested in rationalizing the phenomenon of like-charge attraction between charged bodies, such as a pair of colloids, in the strong coupling regime. The two colloids are modelled as uniformly charged parallel plates, neutralized…

软凝聚态物质 · 物理学 2025-01-13 L. Samaj , E. Trizac , M. Trulsson

Charged soft-matter systems--such as colloidal dispersions and charged polymers--are dominated by attractive forces between constituent like-charged particles when neutralizing counterions of high charge valency are introduced. Such…

软凝聚态物质 · 物理学 2009-11-11 Ali Naji , Swetlana Jungblut , Andre G. Moreira , Roland R. Netz

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

We present an analytical approach to the strong coupling regime of similarly and highly charged plates in the presence of counter-ions. The procedure is physically transparent and based on an exact expansion around the ground state formed…

统计力学 · 物理学 2011-02-23 L. Samaj , E. Trizac

Using integral equation theory of liquids to a binary mixed fluid lipid membrane, we study the membrane-mediated interactions between the macroions and the redistribution of neutral and charged lipids due to binding macroions. We find that…

软凝聚态物质 · 物理学 2015-06-25 Xia-qing Shi , Yu-qiang Ma

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

By a length scale analysis, we study the equilibrium interactions between two like-charge planes confining neutralising counter-ions. At large Coulombic couplings, approaching the two charged bodies leads to an unbinding of counter-ions, a…

软凝聚态物质 · 物理学 2012-10-23 E. Trizac , L. Samaj

We investigate spherical macroions in the strong Coulomb coupling regime within the primitive model in salt-free environment. We first show that the ground state of an isolated colloid is naturally overcharged by simple electrostatic…

软凝聚态物质 · 物理学 2016-08-16 René Messina , Christian Holm , Kurt Kremer

We investigate the interaction between highly charged lipid bilayers in the presence of monovalent counterions. Neutron and X-ray reflectivity experiments show that the water layer between like-charged bilayers is thinner than for…

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 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

It is known that in a water solution with multivalent counterions (Z-ions), two likely charged macroions can attract each other due to correlations of Z-ions adsorbed on their surfaces. This "correlation" attraction is short-ranged and…

软凝聚态物质 · 物理学 2009-11-10 Rui Zhang , B. I. Shklovskii

We study the effective interaction mediated by strongly coupled Coulomb fluids between dielectric surfaces carrying quenched, random monopolar charges with equal mean and variance, both when the Coulomb fluid consists only of mobile…

软凝聚态物质 · 物理学 2020-10-01 Malihe Ghodrat , Ali Naji , Haniyeh Komaie-Moghaddam , Rudolf Podgornik

Due to the strong correlations between multivalent counterions condensed on a macroion, the net macroion charge changes sign at some critical counterion concentration. This effect is known as the charge inversion. Near this critical…

软凝聚态物质 · 物理学 2009-11-07 T. T. Nguyen , B. I. Shklovskii

By a combination of Monte Carlo simulations and analytical calculations, we investigate the effective interactions between highly charged planar interfaces, neutralized by mobile counterions (salt-free system). While most previous analysis…

软凝聚态物质 · 物理学 2020-11-20 Ladislav Samaj , Martin Trulsson , Emmanuel Trizac

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

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