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Themed collection Electrostatics and Soft Matter

32 items
Editorial

Electrostatics and Soft Matter: a Themed Collection in memory of Per Linse

Christos N. Likos and Joakim Stenhammar introduce this themed collection in Soft Matter on electrostatics and soft matter, in memory of Per Linse.

Graphical abstract: Electrostatics and Soft Matter: a Themed Collection in memory of Per Linse
From the themed collection: Electrostatics and Soft Matter
Review Article

Hunting mermaids in real space: known knowns, known unknowns and unknown unknowns

We review efforts to realise so-called mermaid (or short-ranged attraction/long ranged repulsion) interactions in 3d real space.

Graphical abstract: Hunting mermaids in real space: known knowns, known unknowns and unknown unknowns
From the themed collection: Electrostatics and Soft Matter
Paper

Tuning the order of colloidal monolayers: assembly of heterogeneously charged colloids close to a patterned substrate

We study the behavior of negatively charged colloids with two positively charged polar caps close to a planar patterned surface.

Graphical abstract: Tuning the order of colloidal monolayers: assembly of heterogeneously charged colloids close to a patterned substrate
From the themed collection: Electrostatics and Soft Matter
Paper

Two time scales for self and collective diffusion near the critical point in a simple patchy model for proteins with floating bonds

In a simple patchy particle model for proteins with floating bonds, self and collective diffusion exhibits two time scales when approaching the critical point.

Graphical abstract: Two time scales for self and collective diffusion near the critical point in a simple patchy model for proteins with floating bonds
From the themed collection: Electrostatics and Soft Matter
Paper

Theory of polymer-electrolyte-composite electroactuator sensors with flat or volume-filling electrodes

In reverse actuation, a voltage/electrical-current signal can be generated from applying a mechanical force to an electroactuator.

Graphical abstract: Theory of polymer-electrolyte-composite electroactuator sensors with flat or volume-filling electrodes
From the themed collection: Electrostatics and Soft Matter
Paper

Structure and properties of polydisperse polyelectrolyte brushes studied by self-consistent field theory

Two complementary self-consistent field theoretical approaches are used to analyze the equilibrium structure of binary and ternary brushes of polyions with different degrees of polymerization.

Graphical abstract: Structure and properties of polydisperse polyelectrolyte brushes studied by self-consistent field theory
From the themed collection: Electrostatics and Soft Matter
Paper

Specific ion effects for polyelectrolytes in aqueous and non-aqueous media: the importance of the ion solvation behavior

We study the ion-specific counterion condensation behavior around charged polymers in distinct solvents. Our findings reveal the importance of ion solvation behavior in order to rationalize deviations from electrostatic mean field theories.

Graphical abstract: Specific ion effects for polyelectrolytes in aqueous and non-aqueous media: the importance of the ion solvation behavior
From the themed collection: Electrostatics and Soft Matter
Paper

Charge regulating macro-ions in salt solutions: screening properties and electrostatic interactions

We revisit the charge-regulation mechanism of macro-ions and apply it to mobile macro-ions in a bathing salt solution.

Graphical abstract: Charge regulating macro-ions in salt solutions: screening properties and electrostatic interactions
From the themed collection: Electrostatics and Soft Matter
Open Access Paper

Osmotic pressure in polyelectrolyte solutions: cell-model and bulk simulations

The osmotic pressure of polyelectrolyte solutions as a function of concentration has been calculated by simulations of a spherical cell model and by simulations with periodic boundary conditions.

Graphical abstract: Osmotic pressure in polyelectrolyte solutions: cell-model and bulk simulations
From the themed collection: Electrostatics and Soft Matter
Paper

Electrostatic interactions between charged dielectric particles in an electrolyte solution: constant potential boundary conditions

The problem of electrostatic interactions between colloidal particles in an electrolyte solution has been solved within the Debye–Hückel approximation using the boundary condition of constant potential.

Graphical abstract: Electrostatic interactions between charged dielectric particles in an electrolyte solution: constant potential boundary conditions
From the themed collection: Electrostatics and Soft Matter
Paper

Reappearance of slow mode in mixtures of polyethylene glycol and poly(sodium methacrylate)

After addition of poly(ethylene glycol) to a solution of poly(sodium methacrylate), the slow-mode dynamic light scattering signal reappears.

Graphical abstract: Reappearance of slow mode in mixtures of polyethylene glycol and poly(sodium methacrylate)
From the themed collection: Electrostatics and Soft Matter
Paper

Quenching of fully symmetric mixtures of oppositely charged microgels: the role of soft stiffness

Using molecular dynamics simulations, we investigate the self-assembly of a coarse-grained binary system of oppositely charged microgels, symmetric in size and concentration.

Graphical abstract: Quenching of fully symmetric mixtures of oppositely charged microgels: the role of soft stiffness
From the themed collection: Electrostatics and Soft Matter
Paper

Interactions between amphoteric surfaces with strongly overlapping double layers

The entropic repulsion between strongly overlapping electrical double-layers from two parallel amphoteric plates is described via the Donnan equilibrium in the limit of zero electric field.

Graphical abstract: Interactions between amphoteric surfaces with strongly overlapping double layers
From the themed collection: Electrostatics and Soft Matter
Paper

A diagrammatic analysis of the variational perturbation method for classical fluids

The statistical mechanics of classical fluids can be approached from the particle perspective, where the focus is on the positions of the particles, or from the field perspective, where the focus is on the form of the interaction fields generated by the particles. These two perspectives can be combined through the variational perturbation method.

Graphical abstract: A diagrammatic analysis of the variational perturbation method for classical fluids
From the themed collection: Electrostatics and Soft Matter
Paper

Hydrodynamic simulations of charge-regulation effects in colloidal suspensions

Self-organization of charged soft matter is of crucial importance in biology.

Graphical abstract: Hydrodynamic simulations of charge-regulation effects in colloidal suspensions
From the themed collection: Electrostatics and Soft Matter
Paper

Field-induced dipolar attraction between like-charged colloids

The field induced anisotropic interactions between like-charged colloidal particles is studied using direct numerical simulations, where the polarization of the electric double layer is explicitly computed under external AC electric fields.

Graphical abstract: Field-induced dipolar attraction between like-charged colloids
From the themed collection: Electrostatics and Soft Matter
Paper

Concentration-dependent swelling and structure of ionic microgels: simulation and theory of a coarse-grained model

Swelling and structural properties of ionic microgel suspensions are described by a coarse-grained model that includes elastic and electrostatic interactions.

Graphical abstract: Concentration-dependent swelling and structure of ionic microgels: simulation and theory of a coarse-grained model
From the themed collection: Electrostatics and Soft Matter
Open Access Paper

Charge and hydration structure of dendritic polyelectrolytes: molecular simulations of polyglycerol sulphate

Macromolecules based on dendritic or hyperbranched polyelectrolytes have been emerging as high potential candidates for biomedical applications.

Graphical abstract: Charge and hydration structure of dendritic polyelectrolytes: molecular simulations of polyglycerol sulphate
From the themed collection: Electrostatics and Soft Matter
Paper

An anionic shell shields a cationic core allowing for uptake and release of polyelectrolytes within core–shell responsive microgels

MD-simulations and experimental investigations on uptake and release of anionic polyelectrolytes by cationic microgels surrounded by a soft anionic shell.

Graphical abstract: An anionic shell shields a cationic core allowing for uptake and release of polyelectrolytes within core–shell responsive microgels
From the themed collection: Electrostatics and Soft Matter
Open Access Paper

Electrostatic interactions in soft particle systems: mesoscale simulations of ionic liquids

Computer simulations provide a unique insight into the microscopic details, molecular interactions and dynamic behavior responsible for many distinct physicochemical properties of ionic liquids.

Graphical abstract: Electrostatic interactions in soft particle systems: mesoscale simulations of ionic liquids
From the themed collection: Electrostatics and Soft Matter
Open Access Paper

Deswelling behaviour of ionic microgel particles from low to ultra-high densities

The swelling of ionic microgel particles is measured at a wide range of concentrations using a combination of light, X-ray and neutron scattering techniques. Theoretical modeling as well as simulations are used to interpret the data.

Graphical abstract: Deswelling behaviour of ionic microgel particles from low to ultra-high densities
From the themed collection: Electrostatics and Soft Matter
Paper

Strong-coupling theory of counterions between symmetrically charged walls: from crystal to fluid phases

We study thermal equilibrium of classical pointlike counterions confined between symmetrically charged walls at distance d.

Graphical abstract: Strong-coupling theory of counterions between symmetrically charged walls: from crystal to fluid phases
From the themed collection: Electrostatics and Soft Matter
Open Access Paper

Electrolyte solutions at heterogeneously charged substrates

Fluid density profiles sensitively depend on the type of interaction and on the lateral structure and distribution of interaction sites.

Graphical abstract: Electrolyte solutions at heterogeneously charged substrates
From the themed collection: Electrostatics and Soft Matter
Paper

Molecular dynamics simulation of charged colloids confined between hard walls: pre-melting and pre-freezing across the BCC–fluid coexistence

Computer simulations of hard-core Yukawa systems confined between hard walls reveal pre-melting and pre-freezing transitions across the BCC–fluid coexistence.

Graphical abstract: Molecular dynamics simulation of charged colloids confined between hard walls: pre-melting and pre-freezing across the BCC–fluid coexistence
From the themed collection: Electrostatics and Soft Matter
Open Access Paper

Overcharging and reentrant condensation of thermoresponsive ionic microgels

We investigated the complexation of thermoresponsive anionic poly(N-isopropylacrylamide) (PNiPAM) microgels and cationic ε-polylysine chains. We show that the volume phase transition of the microgels triggers polyion adsorption and gives rise to a thermosensitive microgel overcharging and reentrant condensation.

Graphical abstract: Overcharging and reentrant condensation of thermoresponsive ionic microgels
From the themed collection: Electrostatics and Soft Matter
Paper

Many-body interactions between charged particles in a polymer solution: the protein regime

We study the phase behavior of charged particles in electrolyte solutions wherein non-adsorbing polymers are added to provide an attractive depletion interaction.

Graphical abstract: Many-body interactions between charged particles in a polymer solution: the protein regime
From the themed collection: Electrostatics and Soft Matter
Open Access Paper

Ionic structure around polarizable metal nanoparticles in aqueous electrolytes

The high polarizability of neutral metal nanoparticles dictates their electrostatic character in electrolyte solutions.

Graphical abstract: Ionic structure around polarizable metal nanoparticles in aqueous electrolytes
From the themed collection: Electrostatics and Soft Matter
Paper

Making strong polyelectrolyte brushes pH-sensitive by incorporation of gold nanoparticles

Incorporation of pH-sensitive gold nanoparticles in an inert polymer brush triggers a pH-sensitive response.

Graphical abstract: Making strong polyelectrolyte brushes pH-sensitive by incorporation of gold nanoparticles
From the themed collection: Electrostatics and Soft Matter
Paper

Clustering and assembly dynamics of a one-dimensional microphase former

We consider a one-dimensional model of short range attraction and long range repulsion interactions whose simplicity enables detailed analysis.

Graphical abstract: Clustering and assembly dynamics of a one-dimensional microphase former
From the themed collection: Electrostatics and Soft Matter
Paper

Monte Carlo simulations of weak polyelectrolyte microgels: pH-dependence of conformation and ionization

A Monte Carlo study of the pH-dependent ionization and swelling behavior of weak polyelectrolyte microgels.

Graphical abstract: Monte Carlo simulations of weak polyelectrolyte microgels: pH-dependence of conformation and ionization
From the themed collection: Electrostatics and Soft Matter
Paper

A bead–spring chain as a one-dimensional polyelectrolyte gel

The physical principles underlying expansion of a single-chain polyelectrolyte coil caused by Coulomb repulsions among its ionized groups, and the expansion of a cross-linked polyelectrolyte gel, are probably the same.

Graphical abstract: A bead–spring chain as a one-dimensional polyelectrolyte gel
From the themed collection: Electrostatics and Soft Matter
Paper

Efficient simulation method for nano-patterned charged surfaces in an electrolyte solution

We present a method to efficiently simulate nano-patterned charged surfaces inside an electrolyte solution.

Graphical abstract: Efficient simulation method for nano-patterned charged surfaces in an electrolyte solution
From the themed collection: Electrostatics and Soft Matter
32 items

About this collection

In spring 2017, our highly respected colleague Per Linse tragically passed away at the age of 61. Per was a prominent member of the soft matter community, and in particular made many key contributions within the field of soft matter electrostatics and polyelectrolytes.

To honor Per’s memory and his scientific contributions within this field, Soft Matter is pleased to present this themed collection on electrostatics and soft matter. The collection is Guest Edited by Christos Likos (University of Vienna, Austria) and Joakim Stenhammar (Lund University, Sweden), and contains contributions from many of Per’s former colleagues, as well as other leaders in the field.


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