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Nanoscale control of the metal-insulator transition in LaAlO3/ SrTiO3 heterostructures can be achieved using local voltages applied by a conductive atomic-force microscope probe. One proposed mechanism for the writing and erasing process…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 Feng Bi , Daniela F. Bogorin , Cheng Cen , Chung Wung Bark , Jae-Wan Park , Chang-Beom Eom , Jeremy Levy

We present a comprehensive density-functional theory study addressing the adsorption, dissociation and successive diffusion of water molecules on the two regular terminations of SrTiO3(001). Combining the obtained supercell-geometry…

Materials Science · Physics 2015-05-18 Hannes Guhl , Wolfram Miller , Karsten Reuter

Knowledge of the atomic geometry of a surface is a prerequisite for any detailed understanding of the surface's electronic structure and chemical properties. Previous studies have convincingly demonstrated that density functional theory…

Materials Science · Physics 2007-05-23 C. Stampfl , M. Scheffler

The evaporation of a tiny amount of water on the solid surface with different wettability has been studied by molecular dynamics simulations. We found that, as the surface changed from hydrophobicity to hydrophility, the evaporation speed…

Soft Condensed Matter · Physics 2012-03-09 Shen Wang , Yusong Tu , Rongzheng Wan , Haiping Fang

Water is a ubiquitous liquid with unique physico-chemical properties, whose nature has shaped our planet and life as we know it. Water in restricted geometries has different properties than in bulk. Confinement can prevent low-temperature…

Combining the principal component analysis (PCA) of X-ray spectrum with MD simulations, we experimentally reveal the existence of three basic components in water. These components exhibit distinct structures, densities, and temperature…

Soft Condensed Matter · Physics 2022-10-13 Zhipeng Jin , Jiangtao Zhao , Gang Chen , Guo Chen , Zhenlin Luo , Lei Xu

We examine the physical processes which are involved in the formation and stability of the anomalous states of water reported recently. The initial step of adding a small amount of ionic compound XY to pure water leads to the formation of…

Chemical Physics · Physics 2007-05-23 Cheuk-Yin Wong , Shui-Yin Lo

In order to obtain a comprehensive understanding of both thermodynamics and kinetics of water dissociation on TiO2, the reactions between liquid water and perfect and defective rutile TiO2 (110) surfaces were investigated using ab initio…

Chemical Physics · Physics 2018-03-29 Huili Wang , Zhenpeng Hu , Hui Li

Water condensation was studied on silanized (superhydrophobic) and fluorinated (superoleophobic) micro-rough aluminum surfaces of the same topography. Condensation on superhydrophobic surfaces occurred via film-wise mechanism, whereas on…

Water-metal interfaces are ubiquitous and play a key role in many chemical processes, from catalysis to corrosion. Whereas water adlayers on atomically flat transition metal surfaces have been investigated in depth, little is known about…

Materials Science · Physics 2013-05-08 Davide Donadio , Luca M. Ghiringhelli , Luigi Delle Site

Water near hydrophobic surfaces is like that at a liquid-vapor interface, where fluctuations in water density are substantially enhanced compared to that in bulk water. Here we use molecular simulations with specialized sampling techniques…

Recently, the hydrogen adsorption and diffusion on the CeO2 (111) surface have been a vividly discussed topic because of its outstanding catalytic activity and selectivity in hydrogenation reactions. However, for the strongly reduced CeO2…

Materials Science · Physics 2019-05-01 Xiaoke Li , Joachim Paier , Joachim Sauer

A theoretical model for the effect of water hydrogen bonding on the thermodynamics of hydrophobic hydration is proposed as a combination of the classical density functional theory with the recently developed probabilistic approach to water…

Statistical Mechanics · Physics 2011-06-16 Yuri S. Djikaev

Graphene oxide is a rising star among 2D materials, yet its interaction with liquid water remains a fundamentally open question: experimental characterization at the atomic scale is difficult, and modelling by classical approaches cannot…

Materials Science · Physics 2020-03-27 Félix Mouhat , François-Xavier Coudert , Marie-Laure Bocquet

When a hydrophilic solute in water is suddenly turned into a hydrophobic species, for instance, by photoionization, a layer of hydrated water molecules forms around the solute on a time scale of a few picoseconds. We study the dynamic…

Soft Condensed Matter · Physics 2022-02-11 Henning Kirchberg , Peter Nalbach , Christian Bressler , Michael Thorwart

Water absorption in the metal-organic framework (MOF) material Cu-BTC, up to a concentration of 3.5 H$_2$O per Cu ion, is studied via density functional theory at the meta-GGA+U level. The stable arrangements of water molecules show chains…

Materials Science · Physics 2015-08-07 Eric Cockayne , Eric B. Nelson

Cyclodextrins are a family of oligosaccharides with a toroid shape which exhibit a unique ability of entrapping guest molecules in their internal cavity. Water is the primary guest molecule and is omnipresent in the crystalline phases…

Soft Condensed Matter · Physics 2018-10-02 Erika Specogna , King Wo Li , Madeleine Djabourov , Florent Carn , Kawthar Bouchemal

The aversion of hydrophobic solutes for water drives diverse interactions and assemblies across materials science, biology and beyond. % Here, we review the theoretical, computational and experimental developments which underpin a…

Soft Condensed Matter · Physics 2022-10-05 Nicholas B. Rego , Amish J. Patel

We present a study of the solvation properties of model aqueous electrode interfaces. The exposed electrodes we study strongly bind water and have closed packed crystalline surfaces, which template an ordered water adlayer adjacent to the…

Statistical Mechanics · Physics 2015-06-11 David T. Limmer , Adam P. Willard , Paul A. Madden , David Chandler

Water molecules play an important role in providing unique environments for biological reactions on cell membranes. It is widely believed that water molecules form bridges that connect lipid molecules and stabilize cell membranes. Using…

Biological Physics · Physics 2014-08-04 Eiji Yamamoto , Takuma Akimoto , Masato Yasui , Kenji Yasuoka