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The permeation, rejection, and transport of electrolytes in water-filled nanopores are critical to ion current gating and desalinalion processes in synthetic porous membranes and the functions of biological ion channels. Mile the effects of…

Statistical Mechanics · Physics 2008-04-29 Kevin Leung

Tuning of protein surface charge is a fundamental mechanism in biological systems. Protein charge is regulated in a physiological context by pH and interaction with counterions. We report on charge inversion and the related reentrant…

Soft Condensed Matter · Physics 2013-05-29 Felix Roosen-Runge , Benjamin S. Heck , Fajun Zhang , Oliver Kohlbacher , Frank Schreiber

RNA-RNA binding is an important phenomenon observed for many classes of non-coding RNAs and plays a crucial role in a number of regulatory processes. Recently several MFE folding algorithms for predicting the joint structure of two…

Combinatorics · Mathematics 2010-06-16 Thomas J. X. Li , Christian M. Reidys

While the thermodynamics of DNA hybridization is well understood, much less is known about the kinetics of this classic system. Filling this gap in our understanding has new urgency because DNA nanotechnology often depends critically on…

Soft Condensed Matter · Physics 2013-10-28 Thomas E. Ouldridge , Petr Šulc , Flavio Romano , Jonathan P. K. Doye , Ard A. Louis

The diatomic molecule radium monofluoride (RaF) has recently been proposed as a versatile probe for physics beyond the current standard model. Herein, a route towards production of a RaF molecular beam via radium ions is proposed. It takes…

Chemical Physics · Physics 2013-11-22 T. A. Isaev , S. Hoekstra , L. Willmann , R. Berger

This study investigates the photocatalytic nitrogen fixation on a cation-doped surface (Bi$_{x}$M$_{y}$)$_2$MoO$_6$ where (M = Fe, La, Yb) in both the orthorhombic and monoclinic configurations using a density functional theory (DFT)…

Materials Science · Physics 2018-12-13 Alhassan S. Yasin , Botong Liu , Nianqiang Wu , Terence Musho

We have employed the highly accurate complex absorbing potential based ionization potential equation-of-motion coupled cluster singles and doubles (CAP-IP-EOM-CCSD) method to study the various intermolecular decay processes in ionized…

Chemical Physics · Physics 2022-08-05 Ravi Kumar , Aryya Ghosh , Nayana Vaval

A theory of condensation and resolubilization of a dilute DNA solution with growing concentration of multivalent cations, N is suggested. It is based on a new theory of screening of a macroion by multivalent cations, which shows that due to…

Soft Condensed Matter · Physics 2009-10-31 T. T. Nguyen , I. Rouzina , B. I. Shklovskii

Several statistical mechanical theories predict that colloidal suspensions of highly charged macroions and monovalent microions can exhibit unusual thermodynamic phase behavior when strongly deionized. Density-functional, extended…

Soft Condensed Matter · Physics 2009-11-11 A. R. Denton

Integrative biomolecular modeling of RNA relies on structural refined collections and accurate experimental data that reflect binding and folding behavior. However, the prediction of such collections remains challenging due to the rugged…

Grate and co-workers at Pacific Northwest National Laboratory recently developed high information content triazine-based sequence-defined polymers that are robust by not having hydrolyzable bonds and can encode structure and functionality…

Chemical Physics · Physics 2019-07-31 Surl-Hee Ahn , Jay W. Grate , Eric F. Darve

In bacteria such as $\textit{Escherichia coli}$, DNA is compacted into a nucleoid near the cell center, while ribosomes$-$molecular complexes that translate messenger RNAs (mRNAs) into proteins$-$are mainly localized at the poles. We study…

Subcellular Processes · Quantitative Biology 2016-08-30 Michele Castellana , Sophia Hsin-Jung Li , Ned S. Wingreen

The volume occupied by unconstrained bacterial DNA in physiological solutions exceeds 1000 times the volume of the cell. Still, it is confined to a well defined region of the cell called the nucleoid, which occupies only a fraction of the…

Biological Physics · Physics 2016-09-27 Marc Joyeux

The adsorption and dissociation of isolated water molecule on Zr(0001) surface are theoretically investigated for the first time by using density-functional theory calculations. Two kinds of adsorption configurations with almost the same…

Materials Science · Physics 2015-05-27 Shuang-Xi Wang , Ping Zhang , Peng Zhang , Jian Zhao , Shu-Shen Li

One of the key materials in solid-state lithium batteries is fast ion conductors. However, the Li+ ion transport in inorganic crystals involves complex factors, making it a mystery to find and design ion conductors with low migration…

Materials Science · Physics 2024-06-06 Qifan Yang , Jing Xu , Yuqi Wang , Xiao Fu , Ruijuan Xiao , Hong Li

Molecular dynamics simulations have been used extensively to determine equilibrium properties of the electrode-electrolyte interface in supercapacitors held at various potentials. While such studies are essential to understand and optimize…

Soft Condensed Matter · Physics 2024-02-26 Nicolas Gaudy , Mathieu Salanne , Céline Merlet

Most organic and inorganic surfaces (e.g., glass, nucleic acids or lipid membranes) become charged in aqueous solutions. The resulting ionic distribution induces effective interactions between the charged surfaces. Stacks of like-charged…

The accurate determination of the lowest electron attachment ($EA$) and ionization ($IP$) energies for molecules embedded in molecular junctions is important for correctly estimating, \emph{e.g.}, the magnitude of the currents ($I$) or the…

Chemical Physics · Physics 2015-09-21 Ioan Baldea

Electrostatic interactions fundamentally govern the structure and transport of electrolytes. In concentrated electrolytes, however, electrostatic and steric correlations, together with ion-solvent coupling, give rise to complex behavior,…

Chemical Physics · Physics 2026-02-10 Daehyeok Kim , Taejin Kwon , Jeongmin Kim

Non-coding RNA molecules fold into precise base pairing patterns to carry out critical roles in genetic regulation and protein synthesis. We show here that coupling systematic mutagenesis with high-throughput SHAPE chemical mapping enables…

Quantitative Methods · Quantitative Biology 2011-04-07 Wipapat Kladwang , Christopher C. VanLang , Pablo Cordero , Rhiju Das