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Acid ionization in aprotic media is studied using Molecular Dynamics techniques. In particular, models for HCl ionization in acetonitrile and dimethylsulfoxide are investigated. The proton is treated quantum mechanically using Feynman path…

chem-ph · Physics 2009-10-28 Daniel Laria , Raymond Kapral , Dario Estrin , Giovanni Ciccotti

The use of methylammonium (MA) lead halide perovskites \ce{CH3NH3PbX3} (X=I, Br, Cl) in perovskite solar cells (PSCs) has made great progress in performance efficiency during recent years. However, the rapid decomposition of \ce{MAPbI3} in…

The reactivity of interstellar carbon atoms (C) on the water-dominated ices is one of the possible ways to form interstellar complex organic molecules (iCOMs). In this work, we report a quantum chemical study of the coupling reaction of C…

Astrophysics of Galaxies · Physics 2023-10-24 Stefano Ferrero , Cecilia Ceccarelli , Piero Ugliengo , Mariona Sodupe , Albert Rimola

We extend our previous analysis of holographic heavy ion collisions in non-conformal theories. We provide a detailed description of our numerical code. We study collisions at different energies in gauge theories with different degrees of…

We report the results of a first-principles study of dissociative electron attachment to H2O. The cross sections are obtained from nuclear dynamics calculations carried out in full dimensionality within the local complex potential model by…

Chemical Physics · Physics 2007-10-10 Daniel J. Haxton , T. N. Rescigno , C. W. McCurdy

The hydroxyl radical is the primary reactive oxygen species produced by the radiolysis of water, and is a significant source of radiation damage to living organisms. Mobility of the hydroxyl radical at low temperatures and/or high pressures…

Applications · Statistics 2021-12-08 Carter T. Butts , Rachel W. Martin

Hydrogen peroxide plays a key role in many environmental and industrial chemical processes. We performed classical Molecular Dynamics and Continuous Fractional Component Monte Carlo simulations to calculate thermodynamic properties of H2O2…

It has been reported that damage of genome in a living cell by ionizing radiation is about one-third direct and two-thirds indirect. The former which has been introduced in our last paper, concerns direct energy deposition and ionizing…

Biological Physics · Physics 2010-04-27 Wei Wang , Zengliang Yu , Wenhui Su

Electric interactions have a strong impact on the structure and dynamics of biomolecules in their native water environment. Given the variety of water arrangements in hydration shells and the femto- to subnanosecond time range of structural…

Chemical Physics · Physics 2021-08-27 Thomas Elsaesser , Jakob Schauss , Achintya Kundu , Benjamin P. Fingerhut

The importance of co-adsorption for applications of porous materials in gas separation has motivated fundamental studies, which have initially focused on the comparison of the binding energies of different gas molecules in the pores (i.e.…

Materials Science · Physics 2015-04-08 Kui Tan , Sebastian Zuluaga , Qihan Gong , Yuzhi Gao , Nour Nijem , Jing Li , Timo Thonhauser , Yves J Chabal

Describing the interactions of water molecules is one of the most common, yet critical, tasks in molecular dynamics simulations. Because of its unique properties, hundreds of attempts have been made to construct an ideal interaction…

Chemical Physics · Physics 2025-06-23 Bálint Soczó , Ildikó Pethes

Water plays a major role in bio-systems, greatly contributing to determine their structure, stability and even function. It is well know, for instance, that proteins require a minimum amount of water to be functionally active. Since the…

Biological Physics · Physics 2019-04-05 Antonio Benedetto

A well known, if little documented, problem in many molecular simulations of aqueous ionic solutions at finite concentrations is that unrealistic cation-cation associations are frequently found. One might suspect a defect in the ion-ion…

Soft Condensed Matter · Physics 2012-07-16 Ph. A. Bopp , K. Ibuki

Machine learning has emerged as a powerful tool in atomistic simulations, enabling the identification of complex patterns in molecular systems limiting human intervention and bias. However, the practical implementation of these methods…

Chemical Physics · Physics 2025-07-28 Giulia Sormani , Alex Rodriguez , Ali Hassanali

The extent of contact and solvent shared ion pairs of phosphate groups with Na$^+$, Ca$^{2+}$ and Mg$^{2+}$ ions in aqueous environment and their relevance for the stability of polyanionic DNA and RNA structures is highly debated. Employing…

Chemical Physics · Physics 2020-05-01 Benjamin P. Fingerhut , Jakob Schauss , Achintya Kundu , Thomas Elsaesser

Ions in water are the liquid of life. Life occurs almost entirely in 'salt water'. Water itself (without ions) is lethal to animal cells and damaging for most proteins. Water must contain the right ions in the right amounts if it is to…

Biomolecules · Quantitative Biology 2010-09-10 Bob Eisenberg

In aqueous solutions, dissolved ions interact strongly with the surrounding water, thereby modifying the solution properties in an ion-specific manner. These ion-hydration interactions can be accounted for theoretically on a mean-field…

Soft Condensed Matter · Physics 2014-04-22 Dan Ben-Yaakov , David Andelman , Rudi Podgornik , Daniel Harries

Irradiation of isolated water molecules by few-cycle pulses of intense infrared laser light can give rise to ultrafast rearrangement resulting in formation of the H2+ ion. Such unimolecular reactions occur on the potential energy surface of…

Chemical Physics · Physics 2015-06-03 Manish Garg , Ashwani K. Tiwari , Deepak Mathur

We adapt the computational hydrogen electrode approach to explicitly account for photo-generated charges and use it to computationally screen for viable catalyst/co-catalyst combinations for photo-catalytic water splitting. The hole energy…

Materials Science · Physics 2013-07-31 Harald Oberhofer , Karsten Reuter

Light driven oxygen formation in Photosystem II protein is a fundamental process that sustains our biosphere and serves as a blue print to future clean energy solutions due to its high energy conversion efficiency. Last decade of intense…

Biomolecules · Quantitative Biology 2026-01-22 Yulia Pushkar