Electrostatics of Soft and Disordered Matter

ISBN-13: 9789814411851 / Angielski / Twarda / 2014 / 448 str.

David S. Dean; Jure Dobnikar; Ali Naji

Opis

Recently, there has been a surge of activity to elucidate the behavior of highly charged soft matter and Coulomb fluids in general. Such systems are ubiquitous, especially in biological matter where the length scale and the strength of the interaction between highly charged biomolecules are governed by strong electrostatic effects. Several interesting limits have been discovered in the parameter space of highly charged many-particle Coulomb matter where analytical progress is possible and completely novel and unexpected results have been obtained. One of the challenges in highly charged matter is to correctly describe systems with finite coupling strength in the transition regime between weak and strong couplings. After studying the fluctuations of both, several theories have been developed that describe this experimentally highly relevant regime. At the same time, computer simulation algorithms and computing power have advanced to the level where all-ion simulations, including many-body and polarization effects, are possible; the new theories thus can be subjected to numerical confirmation. Another important question is the effect of the structural disorder on electrostatic interactions. It has recently been demonstrated, both theoretically and experimentally, that charge disorder can impose long-range interaction between charged or even uncharged surfaces. These interactions might become very significant in biological processes. Filling a void in the literature, this volume cross-pollinates different theoretical and simulation approaches with new experiments and ties together the low temperature, high coupling constant, and disorder parameters in a unified description of the electrostatic interactions, which largely determine the stability and conformations of most important biological macromolecules. With striking graphical illustrations, the book presents a unified view of the current advances in the field of Coulomb (bio)colloidal systems, building on previous literature that summarized the field over 20 years ago. Leading scientists in the field offer a detailed introduction to different modern methods in statistical physics of Coulomb systems. They detail various approaches to elucidate the behavior of strongly charged soft matter. They also provide experimental and theoretical descriptions of disorder effects in Coulomb systems, which have not been discussed in any other book.

Spis treści

Surprising Challenges. Dielectric Profiles and Ion-Specific Effects at Aqueous Interfaces. Coulomb interactions between Disordered Charge Distributions. Coarse-Grained Modeling of Charged Colloidal Suspensions: From Poisson-Boltzmann Theory to Effective Interactions. Dynamic Electric Response of Charged Fibrous Virus (fd) Suspensions: Interactions of Charged Colloidal Rods in AC Electric Fields. Many-Body Interactions in Volloidal Suspensions. Modeling DNA in Nanopores. Aspects of 1D Coulomb Gases. Hydration Repulsion between Polar Surfaces: An Atomistic Simulation Approach. Electrostatics in Electrolytes Expressed in an Exact Formalism Reminiscent of the Poisson-Boltzmann Picture. Interaction between Disordered Heterogeneous Charged Surfaces. Polarizable Surfaces: Weak and Strong Coupling Regimes. A Field Theory Approach for Modeling Electrostatic Interactions in Soft Matter. Legendre Transforms for Electrostatic Energies. Short-Range Disorder and Electrostatic Interactions in Macromolecules. Mean-Field Electrostatics of Still Rod-Like Ions. Extended Poisson–Boltzmann Descriptions of the Electrostatic Double Layer: Implications for Charged Particles at Interfaces. Modeling Electrokinetics through Varying Length and Time Scales. Physics of Counterion Mediated Attractions between Double-Stranded DNAs. Estimation of Solvation Electrostatic Free Energy of Biomolecular Systems by Numerical Solution of the Poisson-Boltzmann Equation. The Electrode-Ionic Liquid Interface: A Molecular Point of View. The Wigner Strong-Coupling Approach. Ionic Liquids and Ionic Liquid+Solvent Mixtures, Studied by Classical Density Functional Theory. Controlling the Fluid-Fluid Mixing-Demixing Phase Transition with Electric Fields. Statistical Thermodynamics of Supercapacitors and Blue Engines. Cluster Phases in Colloids and Proteins. Moderately Coupled Charged Fluids near Dielectric Interfaces and in Confinement.