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The formation of (bio)molecular condensates via liquid-liquid phase separation in cells has received increasing attention, as these coacervates play important functional and regulatory roles within biological systems. However, the majority…

软凝聚态物质 · 物理学 2022-11-24 Arash Nikoubashman , Miho Yanagisawa

We study the complex formation between one long polyanion chain and many short oligocation chains by computer simulations. We employ a coarse-grained bead-spring model for the polyelectrolyte chains, and model explicitly the small salt…

软凝聚态物质 · 物理学 2017-02-14 Jiajia Zhou , Matthias Barz , Friederike Schmid

Enhancing the efficiency of water electrolysis, which can be severely impacted by the nucleation and growth of bubbles, is key in the energy transition. In this combined experimental and numerical study, in-situ bubble evolution and…

Variational methods are used to calculate structural and thermodynamical properties of a titrating polyelectrolyte in a discrete representation. The Coulomb interactions are emulated by harmonic repulsive forces, the force constants being…

chem-ph · 物理学 2008-02-03 B. Jönsson , M. Ullner , C. Peterson , O. Sommelius , B. Söderberg

In this paper we propose a nonlinear elasticity model of macromolecular conformational change (deformation) induced by electrostatic forces generated by an implicit solvation model. The Poisson-Boltzmann equation for the electrostatic…

偏微分方程分析 · 数学 2010-01-12 Yongcheng Zhou , Michael Holst , James Andrew McCammon

In this work, a comprehensive study about the influence on shear viscosity of polyelectrolyte concentration, persistence length, salt concentration and solvent quality is reported, using numerical simulations of confined solutions under…

软凝聚态物质 · 物理学 2022-11-22 Estela Mayoral , Juan de Dios Hernández Velázquez , Armando Gama Goicochea

We investigate the phenomenon of counterion condensation in a solution of highly charged rigid polyelectrolytes within the cell model. A method is proposed which -- based on the charge distribution function -- identifies both the fraction…

软凝聚态物质 · 物理学 2009-10-31 Markus Deserno , Christian Holm , Sylvio May

Ionic current through a charge-selective interface in a binary electrolyte is a basic element of many electrochemical engineering and microfluidic processes. Such current passage is diffusion-limited: it induces a decrease of electrolyte…

流体动力学 · 物理学 2016-07-06 Isaak Rubinstein , Boris Zaltzman

The functionalities and applications of complex coacervates -- liquid condensates resulting from liquid-liquid phase separation of charged polymers -- are significantly influenced by the dispersion and aggregation states of guest…

软凝聚态物质 · 物理学 2025-08-05 Zongpei Wu , Shensheng Chen

Understanding and controlling polyelectrolyte adsorption onto carbon nanotubes is a fundamen- tal challenge in nanotechology. Polyelectrolytes have been shown to stabilise nanotube suspensions through adsorbing onto the nanotube surface,…

软凝聚态物质 · 物理学 2018-01-18 Alpha A. Lee , Sarah V. Kostinski , Michael P. Brenner

We investigate the structure of trapped Bose-Einstein condensates (BECs) with long-range anisotropic dipolar interactions. We find that a small perturbation in the trapping potential can lead to dramatic changes in the condensate's density…

其他凝聚态物理 · 物理学 2010-02-08 Ryan M. Wilson , Shai Ronen , Han Pu , John L. Bohn

A model of rod-like polyelectrolyte brushes in the presence of monovalent and multivalent counterions but with no added-salt is studied using Monte Carlo simulation. The average height of the brush, the histogram of rod conformations, and…

软凝聚态物质 · 物理学 2007-05-23 H. Fazli , R. Golestanian , P. L. Hansen , M. R. Kolahchi

Using grand-canonical Monte Carlo simulations we investigate the impact of charged walls on the crystallization properties of charged colloidal suspensions confined between these walls. The investigations are based on an effective model…

软凝聚态物质 · 物理学 2015-05-18 S. Grandner , S. H. L. Klapp

The crystallization of bundles in filament networks interacting via long-range repulsions in confinement is described by a phenomenological model. The model demonstrates the formation of the hexagonal crystalline order via the interplay of…

软凝聚态物质 · 物理学 2013-05-10 Zhenwei Yao , Monica Olvera de la Cruz

We present Monte Carlo simulations of colloidal particles pulled into grafted polymer layers by external fields. The insertion free energy of a single colloid into the polymer layer is qualitatively different for surfaces with an ordered…

软凝聚态物质 · 物理学 2012-10-17 Tine Curk , Francisco J. Martinez-Veracoechea , Daan Frenkel , Jure Dobnikar

We show how a two dimensional Bose-Einstein Condensate trapped in a nonequilibrium state can be driven into the Rayleigh-Taylor instability if an outward in-plane force is exerted on it. If the condensate is inside a semiconductor, the…

介观与纳米尺度物理 · 物理学 2008-11-07 Swarbhanu Chatterjee

We consider the existence, stability and dynamics of the ground state and nonlinear excitations, in the form of dark solitons, for a quasi-one-dimensional polariton condensate in the presence of pumping and nonlinear damping. We find a…

We characterize the dynamics of an electrolyte embedded in a varying-section channel under the action of a constant external electrostatic field. By means of molecular dynamics simulations we determine the stationary density, charge and…

软凝聚态物质 · 物理学 2018-10-31 Mauro Chinappi , Paolo Malgaretti

We study the properties of polyelectrolyte chains under different solvent conditions, using a variational technique. The free energy and the conformational properties of a polyelectrolyte chain are studied minimizing the free energy $F_N$,…

软凝聚态物质 · 物理学 2009-11-07 Gabriele Migliorini , Vakhtang Rostiashvili , Namkyung Lee , Thomas A. Vilgis

We systematically construct stationary soliton states in a one-component, two-dimensional, repulsive, Gross-Pitaevskii equation with a ring-shaped target-like trap similar to the potential used to confine a Bose-Einstein condensate in a…

量子气体 · 物理学 2019-06-05 M. Haberichter , P. G. Kevrekidis , R. Carretero-Gonzalez , M. Edwards