Journal ArticleDOI
Attraction between negatively charged surfaces mediated by spherical counterions with quadrupolar charge distribution
Jasna Urbanija,Klemen Bohinc,Alfredo Bellen,Stefano Maset,Aleš Iglič,Veronika Kralj-Iglič,P. B. Sunil Kumar +6 more
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For high enough charge densities of the interacting surfaces and large enough l, the interaction between surfaces turns repulsive as the distance between charges is reduced, and within a mean field approach an attractive interaction between like-charged surfaces originating from orientational ordering of quadrupolar counterions is obtained.Abstract:
We observed monoclonal antibody mediated coalescence of negatively charged giant unilamellar phospholipid vesicles upon close approach of the vesicles. This feature is described, using a mean field density functional theory and Monte Carlo simulations, as that of two interacting flat electrical double layers. Antibodies are considered as spherical counterions of finite dimensions with two equal effective charges spatially separated by a fixed distance l inside it. We calculate the equilibrium configuration of the system by minimizing the free energy. The results obtained by solving the integrodifferential equation and by performing the Monte Carlo simulation are in excellent agreement. For high enough charge densities of the interacting surfaces and large enough l, we obtain within a mean field approach an attractive interaction between like-charged surfaces originating from orientational ordering of quadrupolar counterions. As expected, the interaction between surfaces turns repulsive as the distance between charges is reduced.read more
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Long-range attraction due to the flexibility between two membranes
TL;DR: In this paper, the effects of flexibility on the interaction between charged membranes are studied theoretically, and it is known that the charge fluctuation can cause an attraction between equally charged membranes, but the shape fluctuation plays an opposite role.
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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.
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Classical Electrostatics in Biology and Chemistry
Barry Honig,Anthony Nicholls +1 more
TL;DR: A major revival in the use of classical electrostatics as an approach to the study of charged and polar molecules in aqueous solution has been made possible through the development of fast numerical and computational methods to solve the Poisson-Boltzmann equation for solute molecules that have complex shapes and charge distributions.
Book
Statistical Thermodynamics Of Surfaces, Interfaces, And Membranes
TL;DR: In this paper, the authors present a review of classical statistical mechanics, including phase separation in binary mixtures, and differential geometrical models of surfaces and interfaces, as well as a discussion of long-range interactions.
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Electrostatic correlations: from plasma to biology
TL;DR: The thermodynamic consequences of electrostatic correlations in a variety of systems ranging from classical plasmas to molecular biology are reviewed.