Journal ArticleDOI
Charge fluctuations and membrane attractions
P. A. Pincus,Samuel A. Safran +1 more
TLDR
In this article, the authors consider the fluctuations of charges in membranes and their effect on the interactions between two fluid membranes a distance h apart and find that the attraction scales as 1/h3 at large distances and as 1 /h when the membranes are closer than a typical screening length.Abstract:
We consider the fluctuations of charges in membranes and their effect on the interactions between two fluid membranes a distance h apart. For the case where the counterions are highly localized in the membrane planes we find that the attraction scales as 1/h3 at large distances and as 1/h when the membranes are closer than a typical screening length. When the counterions are delocalized between the membranes a simple ideal-gas approximation indicates that a primary contribution to the membrane attraction are the fluctuations of this gas; in some cases, these attractions can exceed the repulsive interactions found for uniform charge distributions (the Poisson-Boltzmann or mean-field repulsions). These results may be relevant to understanding the role of charge fluctuations in membrane attraction and adhesion.read more
Citations
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Journal ArticleDOI
Effective Interactions Between Electric Double Layers
Jean-Pierre Hansen,Hartmut Löwen +1 more
TL;DR: This review summarizes and assesses recent theoretical and experimental advances, with special emphasis on the effective interaction between charge-stabilized colloids, in the bulk or in confined geometries, and on the ambiguities of defining an effective charge of the colloidal particles.
Journal ArticleDOI
Statics and dynamics of strongly charged soft matter
TL;DR: In this article, the authors discuss the adsorption behavior of polyelectrolytes on substrates of planar, cylindrical and spherical geometry with specific reference to DNA adhesion on supported charged lipid layers and DNA binding on diamagnetic dendro-polymers, respectively, and demonstrate using ab initio methods that specific interactions between oppositely charged groups are important and cause ion-specific effects.
Journal ArticleDOI
Condensed DNA: condensing the concepts.
TL;DR: A brief description of main experimental features of DNA condensation inside viruses, bacteria, eukaryotes and the test tube and main theoretical approaches for the description of these systems are presented.
Journal ArticleDOI
Rigidification of Neutral Lipid Bilayers in the Presence of Salts
TL;DR: It is found that both salts lead to a significant increase of order within the lipid bilayer, leading to a decrease of bilayer elasticity and shift of main phase transition temperature.
Journal ArticleDOI
Electrostatic interactions in strongly coupled soft matter
TL;DR: In this paper, the attraction mechanism and the structure of counterionic correlations are discussed in the limit of strong coupling based on recent numerical and analytical investigations and for various geometries (planar, spherical and cylindrical) of charged objects.
References
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Book
Intermolecular and surface forces
TL;DR: The forces between atoms and molecules are discussed in detail in this article, including the van der Waals forces between surfaces, and the forces between particles and surfaces, as well as their interactions with other forces.
Journal ArticleDOI
Counterion-Induced Attraction between Rigid Polyelectrolytes
Niels Grønbech-Jensen,Niels Grønbech-Jensen,Robert J. Mashl,Robijn Bruinsma,William M. Gelbart +4 more
TL;DR: In this paper, the authors report on results of long-time Brownian-dynamics simulations of electrostatic interactions between two rigid polyelectrolyte rods and find that the interaction can be both repulsive, as obtained from mean field theory, and attractive.