English
Related papers

Related papers: Neural-Network Assisted Study of Nitrogen Atom Dyn…

200 papers

We show that the momentum flexibility of inelastic x-ray scattering may be exploited to invert its loss function, alowing real time imaging of density disturbances in a medium. We show the disturbance arising from a point source in liquid…

Condensed Matter · Physics 2009-11-10 P. Abbamonte , K. D. Finkelstein , M. D. Collins , S. M. Gruner

We perform lengthy molecular dynamics simulations of the SPC/E model of water to investigate the dynamics under pressure at many temperatures and compare with experimental measurements. We calculate the isochrones of the diffusion constant…

Condensed Matter · Physics 2009-10-31 Francis W. Starr , Stephen Harrington , Francesco Sciortino , H. Eugene Stanley

The dissociative adsorption of hydrogen on Pd(100) has been studied by ab initio quantum dynamics and ab initio molecular dynamics calculations. Treating all hydrogen degrees of freedom as dynamical coordinates implies a high dimensionality…

Materials Science · Physics 2009-10-30 Axel Gross , Matthias Scheffler

Molecular dynamics calculations have been performed to study the ultraviolet photodissociation of D2O in an amorphous D2O ice surface at 10-90 K, in order to investigate the influence of isotope effects on the photodesorption processes. As…

Chemical Physics · Physics 2011-05-06 C. Arasa , S. Andersson , H. M. Cuppen , E. F. van Dishoeck , G. J. Kroes

Solubility and interfacial energy are two fundamental parameters underlying the competitive nucleation of polymorphs. However, solubility measurement of metastable phases comes with a risk of solventmediated transformations which can render…

Materials Science · Physics 2023-09-15 Ruel Cedeno , Romain Grossier , Nadine Candoni , Stéphane Veesler

Ultraviolet irradiation of ice is of great interest for understanding the chemistry in both atmospheric and astrophysical environments. In interstellar space, photodissociation of H2O molecules can be a driving force behind the chemistry on…

Astrophysics · Physics 2016-08-30 Stefan Andersson , Geert-Jan Kroes , Ewine F. van Dishoeck

The model Tip4p/{\epsilon} for water is tested for the presence of thermodynamic and dy- namic anomalies. Molecular dynamic simulations for this model were performed and we show that for this system the density versus temperature at…

Soft Condensed Matter · Physics 2015-08-12 Raul Fuentes-Azcatl , Marcia C. Barbosa

The development of reversible hydrogen storage materials has become crucial for enabling carbon-neutral energy systems. Based on this, the present work investigates the hydrogen storage on the sodium-decorated P-C$_3$N (Na@P-C$_3$N), a…

We investigate the properties of water along the liquid/vapor coexistence line in the supercooled regime down to the no-man's land. Extensive molecular dynamics simulations of the TIP4P/2005 liquid/vapor interface in the range 198 -- 348 K…

Soft Condensed Matter · Physics 2023-02-15 Alexander Gorfer , Christoph Dellago , Marcello Sega

In this contribution, we compute the $^1$H nuclear magnetic resonance (NMR) relaxation rate of liquid water at ambient conditions. We are using structural and dynamical information from Coupled Cluster Molecular Dynamics (CCMD) trajectories…

We investigated the vibrational dynamics and the structural relaxation of water nanoconfined in porous silica samples with pore size of 4 nm at different levels of hydration and temperature. We used as spectroscopic technique the…

Mesoscale and Nanoscale Physics · Physics 2016-12-21 A. Taschin , P. Bartolini , R. Torre

The diffusion of molecules on interstellar grain surfaces is one of the most important driving forces for the molecular complexity in the interstellar medium. Due to the lack of laboratory measurements, astrochemical modeling of grain…

Instrumentation and Methods for Astrophysics · Physics 2023-02-20 Jiao He , Paula Caroline Pérez Rickert , Tushar Suhasaria , Orianne Sohier , Tia Bäcker , Dimitra Demertzi , Gianfranco Vidali , Thomas K. Henning

Sticking of H and D atoms on interstellar dust grains is the first step in molecular hydrogen formation, which is a key reaction in the InterStellar Medium (ISM). After studying the sticking coefficients of H2 and D2 molecules on amorphous…

Instrumentation and Methods for Astrophysics · Physics 2012-02-14 H. Chaabouni , H. Bergeron , S. Baouche , F. Dulieu , E. Matar , E. Congiu , L. Gavilan , J. L. Lemaire

A quantitative understanding of the evaporative drying kinetics and nucleation rates of aqueous based aerosol droplets is important for a wide range of applications, from atmospheric aerosols to industrial processes such as spray drying.…

In the coldest (10--20 K) regions of the interstellar medium, the icy surfaces of interstellar grains serve as solid-state supports for chemical reactions. Among their plausible roles, that of third body is advocated, in which the reaction…

Astrophysics of Galaxies · Physics 2023-03-01 Stefano Ferrero , Stefano Pantaleone , Cecilia Ceccarelli , Piero Ugliengo , Mariona Sodupe , Albert Rimola

In regions where stars form, variations in density and temperature can cause gas to freeze-out onto dust grains forming ice mantles, which influences the chemical composition of a cloud. The aim of this paper is to understand in detail the…

Solar and Stellar Astrophysics · Physics 2017-11-08 S. Cazaux , R. Martin-Domenech , Y. J. Chen , G. M. Munoz Caro , C. Gonzalez Diaz

Modern analog computers are ideally suited to solving large systems of ordinary differential equations at high speed with low energy consumtion and limited accuracy. In this article, we survey N-body physics, applied to a simple water model…

Computational Physics · Physics 2023-09-12 Sven Köppel , Alexandra Krause , Bernd Ulmann

The fundamental understanding of intermolecular interactions of ionic liquids with water represents a vital extent in predicting ionic liquid properties. Intermolecular or noncovalent interactions were studied for 1,3-dimethyl imidazolium…

Chemical Physics · Physics 2022-06-14 Oleg N. Starovoytov

Molecular dynamics simulation is a prominent way of analyzing the dynamic properties of a system. The molecular dynamics simulation of diffusion, an important transport property, of dilute solution of cysteine in SPCE water at five…

Chemical Physics · Physics 2018-09-25 Hem Prasad Bhusal , Narayan Prasad Adhikari

First-principles density-functional theory and supercell models are employed to calculate the adsorption of water molecules on the Cu(100) surface. In agreement with the experimental observations, the calculations show that a H2O molecule…

Materials Science · Physics 2009-09-29 Sanwu Wang , Yanzhao Cao , P. A. Rikvold