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We report a Grand Canonical Monte Carlo simulation study of the liquid-vapor interface of a model fluid exhibiting polydispersity in terms of the particle size $\sigma$. The bulk density distribution, $\rho^0(\sigma)$, of the system is…

Soft Condensed Matter · Physics 2009-11-11 Matteo Buzzacchi , Nigel B. Wilding

Synchrotron X-ray diffraction experiments and molecular dynamics simulations have been performed on simple aliphatic aldehydes, from propanal to nonanal. The performance of the OPLS all-atom interaction potential model for aldehydes has…

Chemical Physics · Physics 2018-11-27 Ildikó Pethes , László Temleitner , Matija Tomšič , Andrej Jamnik , László Pusztai

Molecular dynamics simulations of the liquid-vapour interfaces in simple sp-bonded liquid metals have been performed using first principles methods. Results are presented for liquid Li, Na, K, Rb, Cs, Mg, Ba, Al, Tl, and Si at thermodynamic…

Disordered Systems and Neural Networks · Physics 2009-11-11 David J. Gonzalez Luis E. Gonzalez , Malcolm J. Stott

Diffuse-interface theory provides a foundation for the modeling and simulation of microstructure evolution in a very wide range of materials, and for the tracking/capturing of dynamic interfaces between different materials on larger scales.…

Computational Physics · Physics 2018-08-03 Zhijie Xu , Paul Meakin , Alexandre Tartakovsky

We examine the applicability of various model profiles for the liquid/vapor interface by X-ray reflectivities on water and ethanol and their mixtures at room temperature. Analysis of the X-ray reflecivities using various density profiles…

Soft Condensed Matter · Physics 2014-04-30 Wei Bu , Doseok Kim , David Vaknin

We compare the mass and internal distribution of atomic hydrogen (HI) in 2200 present-day central galaxies with M_star > 10^10 M_Sun from the 100 Mpc EAGLE Reference simulation to observational data. Atomic hydrogen fractions are corrected…

The observed high covering fractions of neutral hydrogen (HI) with column densities above $\sim 10^{17} \rm{cm}^{-2}$ around Lyman-Break Galaxies (LBGs) and bright quasars at redshifts z ~ 2-3 has been identified as a challenge for…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-25 Alireza Rahmati , Joop Schaye , Richard G. Bower , Robert A. Crain , Michelle Furlong , Matthieu Schaller , Tom Theuns

The equilibrium silica liquid-liquid interface between the high-density liquid (HDL) phase and the low-density liquid (LDL) phase is examined using molecular-dynamics simulation. The structure, thermodynamics, and dynamics within the…

Materials Science · Physics 2022-10-19 Xin Zhang , Brian B. Laird , Hongtao Liang , Wenliang Lu , Zhiyong Yu , Xiangming Ma , Ya Cheng , Yang Yang

First principles molecular dynamics simulations have been performed for the liquid-vapor interfaces of liquid Li, Mg, Al and Si. We analize the oscillatory ionic and valence electronic density profiles obtained, their wavelengths and the…

Disordered Systems and Neural Networks · Physics 2009-11-11 L. E. Gonzalez , D. J. Gonzalez , M. J. Stott

The initial interaction of water with semiconductors determines the electronic structure of the solid-liquid interface. The exact nature of this interaction is, however, often unknown. Here, we study gallium phosphide-based surfaces exposed…

Materials Science · Physics 2019-05-15 Matthias M. May , Helena Stange , Jonas Weinrich , Thomas Hannappel , Oliver Supplie

The air-water and graphene-water interfaces represent quintessential examples of the liquid-gas and liquid-solid boundaries, respectively. While the sum-frequency generation (SFG) spectra of these interfaces exhibit certain similarities, a…

Based on a microscopic density functional theory we calculate the internal structure of the three-phase contact line between liquid, vapor, and a confining wall as well as the morphology of liquid wetting films on a substrate exhibiting a…

Soft Condensed Matter · Physics 2009-10-31 C. Bauer , S. Dietrich

Hybrid materials are crucial in photovoltaics where the overall efficiency of the heterostructure is closely related to the level of charge transfer at the interface. Here, using various metal / poly(3-hexylthiophene)(P3HT) heterostructure…

Materials Science · Physics 2019-08-20 V. Ongun Özçelik , Yingmin Li , Wei Xiong , Francesco Paesani

Investigating atom-surface interactions is the key to an in-depth understanding of chemical processes at interfaces, which are of central importance in many fields -- from heterogeneous catalysis to corrosion. In this work, we present a…

Chemical Physics · Physics 2023-12-18 Martin Liebetrau , Yvonne Dorenkamp , Oliver Bünermann , Jörg Behler

Using three dimensional Monte Carlo radiation transfer models of photoionisation and dust scattering, we explore different components of the widespread diffuse H$\alpha$ emission observed in the interstellar medium of the Milky Way and…

Astrophysics of Galaxies · Physics 2015-06-23 Joanna E. Barnes , Kenneth Wood , Alex S. Hill , L. Matthew Haffner

Recently, it was established that a two-dimensional electron system can arise at the interface between two oxide insulators LaAlO3 and SrTiO3. This paradigmatic example exhibits metallic behaviour and magnetic properties between…

Strongly Correlated Electrons · Physics 2016-11-28 I. I. Piyanzina , Yu. V. Lysogorskiy , I. I. Varlamova , A. G. Kiiamov , T. Kopp , V. Eyert , O. V. Nedopekin , D. A. Tayurskii

SrHfO3 is a potential dielectric material for metal-oxide-semiconductor (MOS) devices. SrHfO3/GaAs interface has attracted attention due to its unique properties. In this paper, the interface properties of (001) SrHfO3/GaAs are investigated…

Materials Science · Physics 2018-02-14 Li-Bin Shi , Xiao-Ming Xiu , Xu-Yang Liu , Kai-Cheng Zhang , Chun-Ran Li , Hai-Kuan Dong

We investigate the structural properties of liquid water at near ambient conditions using first-principles molecular dynamics simulations based on a semilocal density functional augmented with nonlocal van der Waals interactions. The…

Soft Condensed Matter · Physics 2016-08-01 Giacomo Miceli , Stefano de Gironcoli , Alfredo Pasquarello

The standard Halo Occupation Distribution (HOD) models were originally developed based on results from semi-analytic and hydrodynamical galaxy formation models. Those models have since progressed, in particular to include AGN feedback to…

Astrophysics of Galaxies · Physics 2017-05-08 Nuala McCullagh , Peder Norberg , Shaun Cole , Violeta Gonzalez-Perez , Carlton Baugh , John Helly

We report on molecular dynamics simulations of the atomic structure and diffusion processes at Al(110)/Si(001) interphase boundary created by simulated vapor deposition of Al(Si) alloy onto Si(001) substrate. An array of parallel misfit…

Materials Science · Physics 2024-12-31 Yang Li , Yuri Mishin
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