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We revisited ab initio evaluations of the energy barriers along the possible diffusion paths of the defects in rutile TiO$_2$. By using a method carefully considering the cancellation of the self-interaction, Ti interstitials hopping along…

Materials Science · Physics 2019-12-11 Tom Ichibha , Anouar Benali , Kenta Hongo , Ryo Maezono

By performing first-principles molecular dynamics calculations, we systematically simulate the adsorption behavior of oxygen molecules on the clean and strained Pb(111) surfaces. The obtained molecular adsorption precursor state, and the…

Materials Science · Physics 2011-10-28 Yu Yang , Ping Zhang

The interaction of water with Fe$_3$O$_4$(001) is studied by density functional theory (DFT) calculations including an on-site Coulomb term. For isolated molecules dissociative adsorption is strongly promoted at surface defect sites, while…

We show that the formation of the wetting layer and the experimentally observed continuous shift of the H2O-OH balance towards molecular water at increasing coverage on a TiO2(110) surface can be rationalized on a molecular level. The…

Materials Science · Physics 2013-08-20 M. Amft , L. E. Walle , D. Ragazzon , A. Borg , P. Uvdal , N. V. Skorodumova , A. Sandell

We determine potentials of the mean force for interactions of amino acids with four common surfaces of ZnO in aqueous solutions. The method involves all-atom molecular dynamics simulations combined with the umbrella sampling technique. The…

Biomolecules · Quantitative Biology 2014-06-02 Grzegorz Nawrocki , Marek Cieplak

We determine the stability and properties of interfaces of low-index Au surfaces adhered to TiO2(110), using density functional theory energy density calculations. We consider Au(100) and Au(111) epitaxies on rutile TiO2(110) surface, as…

Materials Science · Physics 2012-02-28 Min Yu , Dallas R. Trinkle

The accurate description of iron oxides/water interfaces requires reliable force field parameters that can be developed through the comparison with sophisticated quantum mechanical calculations. Here a set of CLASS2 force field parameters…

Materials Science · Physics 2021-12-07 Paulo Siani , Enrico Bianchetti , Hongsheng Liu , Cristiana Di Valentin

We present results of classical dynamics calculations, performed to study the photodissociation of water in crystalline and amorphous ice surfaces at a surface temperature of 10 K. Dissociation in the top six monolayers is considered.…

Astrophysics · Physics 2009-11-11 Stefan Andersson , Ayman Al-Halabi , Geert-Jan Kroes , Ewine F. van Dishoeck

Extensive density-functional calculations are performed for chemisorption of atoms in the three first periods (H, B, C, N, O, F, Al, Si, P, S, and Cl) on the polar TiC(111) surface. Calculations are also performed for O on TiC(001), for…

Materials Science · Physics 2007-05-23 Carlo Ruberto , Bengt I. Lundqvist

We present a first-principles study of the atomic hydrogen adsorption onto the Be(10\={1}0) thin film. There are two types of Be(10\={1}0) surfaces according to the interlayer spacing between the surface and its nearest-neighbor layer. We…

Materials Science · Physics 2007-05-23 Ping Zhang , Hong-Zhou Song

The presence of sulfur atoms on the Pd(100) surface is known to hinder the dissociative adsorption of hydrogen. Using density-functional theory and the full-potential linear augmented plane-wave method, we investigate the potential energy…

Condensed Matter · Physics 2009-10-30 C. M. Wei , A. Gross , M. Scheffler

The success of density functional theory for the description of the adsorption of atoms on surfaces is well established, and based on recent calculations using gradient corrections, it has been shown that it also describes well the…

mtrl-th · Physics 2008-02-03 Catherine Stampfl

The hydration of magnesium oxide (MgO) to magnesium hydroxide (Mg(OH)$_2$) is a fundamental solid-surface chemical reaction with significant implications for materials science. Yet its molecular-level mechanism from water adsorption to…

Materials Science · Physics 2026-01-16 Taichi Inagaki , Miho Hatanaka

It is well known, both theoretically and experimentally, that alloying MgH$_2$ with transition elements can significantly improve the thermodynamic and kinetic properties for H$_2$ desorption, as well as the H$_2$ intake by Mg bulk. Here we…

Materials Science · Physics 2009-11-13 M. Pozzo , D. Alfè , A. Amieiro , S. French , A. Pratt

The interface between liquid water and the Pt(111) metal surface is characterized structurally and thermodynamically via reactive molecular dynamics (MD) simulations within the ReaxFF framework. The formation of a distinct buckled adsorbate…

Chemical Physics · Physics 2021-03-19 Christoph Karsten Jung , Laura Braunwarth , Andrey Sinyavskiy , Timo Jacob

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

Ion hydration and interfacial water play crucial roles in numerous phenomena ranging from biological to industrial systems. Although biologically relevant (and mostly smaller) ions have been studied extensively in this context, very little…

Soft Condensed Matter · Physics 2019-01-01 William Rock , Baofu Qiao , Tiecheng Zhou , Aurora E. Clark , Ahmet Uysal

Clean oxide surfaces are generally hydrophilic. Water molecules anchor at undercoordinated surface metal atoms that act as Lewis-acid sites, and they are stabilized by H bonds to undercoordinated surface oxygens. The large unit cell of…

The atomic scale insights into the interaction of water with oxide surface are essential for elucidating the mechanism of physiochemical processes in various scientific and practical fields, since the water is ubiquitous and coats…

Chemical Physics · Physics 2017-12-12 Zhenjun Song , Qiang Wang

Understanding the interaction of organic molecules with TiO2 surfaces is important for a wide range of technological applications. While density functional theory (DFT) calculations can provide valuable insight about these interactions,…

Materials Science · Physics 2015-06-23 Marcus Tillotson , Peter Brett , Roger A. Bennett , Ricardo Grau-Crespo
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