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We report Monte Carlo results for the fluid structure of a system of dimeric particles interacting via a core-softened potential. More specifically, dimers interact through a repulsive pair potential of inverse-power form, modified in such…

Soft Condensed Matter · Physics 2016-03-08 Gianmarco Munaò , Franz Saija

We use a shell model to study the counterion interactions in a colloidal solution. In this shell model, the counterions are restricted to move inside a spherical region about their host colloidal particle. In particular, we apply Monte…

Soft Condensed Matter · Physics 2012-02-09 Chi-Lun Lee

We demonstrate for the first time a tight binding model for water incorporating polarizable anions. A novel aspect is that we adopt a "ground up" approach in that properties of the monomer and dimer only are fitted. Subsequently we make…

Materials Science · Physics 2015-05-20 A. T. Paxton , J. J. Kohanoff

We report an accurate Monte Carlo calculation of the phase diagram and clustering properties of the restricted primitive model with non-additive hard-sphere diameters. At high density the positively non-additive fluid shows more clustering…

Soft Condensed Matter · Physics 2013-07-11 Riccardo Fantoni , Giorgio Pastore

The interactions of hydrated ions with solution and interface partners are strong on a chemical energy scale. Here, we test the foremost \textit{ab initio theory} for evaluation of hydration free energies of ions, namely,…

Chemical Physics · Physics 2022-06-27 Diego T. Gomez , Lawrence R. Pratt , Dilipkumar N. Asthagiri , Susan B. Rempe

Mott transitions in real materials are first order and almost always associated with lattice distortions, both features promoting the emergence of nanotextured phases. This nanoscale self-organization creates spatially inhomogeneous…

In this paper we discuss the structure of A4M4 alkali(=A)- tetralide (= M) (= group 14) clusters. Without polarization these polyions consist of a central tetralide tetrahedron with each face capped by an alkali ion. We show that ionic…

Materials Science · Physics 2007-05-23 Wiebe Geertsma

Solvation in 1-ethyl-3-methylmidazolium chloride and in 1-ethyl-3-methylimidazolium hexafluorophosphate near equilibrium is investigated via molecular dynamics computer simulations with diatomic and benzenelike molecules employed as probe…

Soft Condensed Matter · Physics 2009-11-11 Y. Shim , M. Y. Choi , Hyung J. Kim

Many experiments investigating magnetic field tuned superconductor-insulator transition (H-SIT), often exhibit low-temperature resistance saturation, which is interpreted as an anomalous metallic phase emerging from a "failed…

Superconductivity · Physics 2021-03-24 Xinyang Zhang , Bar Hen , Alexander Palevski , Aharon Kapitulnik

Structural and dynamical characteristics pertaining to the solvation of an excess proton in liquid-like nanoclusters of the type [H$_2$O]$_n$ are investigated using Molecular Dynamics experiments. Three different aggregate sizes were…

Chemical Physics · Physics 2013-07-17 Mariano Galvagno , Daniel Laria , Javier Rodriguez

The mechanisms governing mechanical dissipation in amorphous tantala are studied at microscopic scale via Molecular Dynamics simulations, namely by mechanical spectroscopy in a wide range of temperature and frequency. We find that…

Materials Science · Physics 2020-09-24 Francesco Puosi , Francesco Fidecaro , Simone Capaccioli , Dario Pisignano , Dino Leporini

We examine the hydrodynamics of systems with spontaneously broken multipolar symmetries using a systematic effective field theory. We focus on the simplest non-trivial setting: a system with charge and dipole symmetry, but without momentum…

Statistical Mechanics · Physics 2023-12-12 Charles Stahl , Marvin Qi , Paolo Glorioso , Andrew Lucas , Rahul Nandkishore

Competitive solvation of an ion by two or more solvents is one of the key phenomena determining the identity of our world. Solvation in polar solvents frequently originates from non-additive non-covalent interactions. Pre-parametrized…

Materials Science · Physics 2015-06-22 Vitaly Chaban

Organic material in anoxic sediment represents a globally significant carbon reservoir that acts to stabilize Earth's atmospheric composition. The dynamics by which microbes organize to consume this material remain poorly understood. Here…

Biological Physics · Physics 2017-04-27 Alexander Petroff , Frank Tejera , Albert Libchaber

It is well known that, contrary to the autonomous case, the stability/instability of solutions of nonautonomous linear ordinary differential equations $x' = A(t) x$ is in no relation to the sign of the real parts of the eigenvalues of…

Classical Analysis and ODEs · Mathematics 2017-08-25 Janusz Mierczyński

Water-in-salt electrolytes (WiSEs) are a class of super-concentrated electrolytes that have shown much promise in replacing organic electrolytes in lithium-ion batteries. At the extremely high salt concentrations of WiSEs, ionic association…

In this work, we use large-scale molecular dynamics simulations coupled to free energy calculations to identify for the first time a limit of stability (spinodal) and a change in the nucleation mechanism in aqueous NaCl solutions. This is a…

Chemical Physics · Physics 2019-05-01 Hao Jiang , Pablo G. Debenedetti , Athanassios Z. Panagiotopoulos

In a previous work, we investigated a two-dimensional lattice-fluid model, displaying some waterlike thermodynamic anomalies. The model, defined on a triangular lattice, is now extended to aqueous solutions with apolar species. Water…

Soft Condensed Matter · Physics 2009-11-11 C. Buzano , E. De Stefanis , M. Pretti

Studying the freezing of saltwater on a molecular level is of fundamental importance for improving freeze desalination techniques. Here, we investigate the freezing process of NaCl solutions using a combination of x-ray diffraction and…

Chemical Physics · Physics 2020-04-22 Ifigeneia Tsironi , Daniel Schlesinger , Alexander Späh , Lars Eriksson , Mo Segad , Fivos Perakis

We report results of 0.05"-resolution observations toward the O-type proto-binary system IRAS 16547-4247 with the Atacama Large Millimeter/submillimeter Array (ALMA). We present dynamical and chemical structures of the circumbinary disk,…