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We have studied the adsorption of neutral polyampholytes on model charged surfaces that have been characterized by contact angle and streaming current measurements. The loop size distributions of adsorbed polymer chains have been obtained…

软凝聚态物质 · 物理学 2009-11-07 F. Ozon , J. -M. di Meglio , J. -F. Joanny

Hydrogen adsorption on delta-Pu (100) and (111) surfaces using the generalized gradient approximation of the density functional theory with Perdew and Wang functionals have been studied at both the spin-polarized level and the…

强关联电子 · 物理学 2009-11-10 M. N. Huda , A. K. Ray

The adsorption of the chiral molecule lactic acid on chiral Pt surfaces is studied by Density Functional Theory calculations. First we study the adsorption of L-lactic acid on the flat Pt(111) surface. Using the oPBE-vdW functional which…

材料科学 · 物理学 2013-10-04 Jörn-Holger Franke , Daniel S. Kosov

Theoretical calculations based on density functional theory have made significant contributions to our understanding of metal oxides, their surfaces, and the binding of molecules at these surfaces. In this paper we investigate the binding…

材料科学 · 物理学 2007-05-23 Oyvind Borck , Elsebeth Schroder

Nickel bulk, the low index surfaces and the adsorbate systems Ni(111) (root 3 x root3)-Cl, and Ni(111)(2 x 2)-K are studied with gradient corrected density functional calculations. It is demonstrated that an approach based on Gaussian type…

材料科学 · 物理学 2009-11-10 K. Doll

This study explores atomic and molecular adsorption on a number of early transition-metal carbides (TMC's) by means of density-functional theory calculations. Trend studies are conducted with respect to both period and group in the periodic…

材料科学 · 物理学 2012-05-14 Aleksandra Vojvodic , Carlo Ruberto , Bengt I. Lundqvist

The delicate balance between H-bonding and van der Waals interactions determine the stability,structure and chirality of many molecular and supramolecular aggregates weakly adsorbed on solid surfaces.Yet the inherent complexity of these…

The adsorption of atomic oxygen and its inclusion into subsurface sites on Ag(210) and Ag(410) surfaces have been investigated using density functional theory. We find that--in the absence of adatoms on the first metal layer--subsurface…

凝聚态物理 · 物理学 2009-11-10 A. Kokalj , N. Bonini , A. Dal Corso , S. de Gironcoli , S. Baroni

The variation of the work function upon carbon adsorption on the reconstructed Au(110) surface is measured experimentally and compared to density functional calculations. The adsorption dynamics is simulated with ab-initio molecular…

原子物理 · 物理学 2018-08-08 H. Z. Jooya , K. S. McKay , E. Kim , P. F. Weck , D. P. Pappas , D. A. Hite , H. R. Sadeghpour

This study aims to elucidate the adsorption and surface chemistry of N-methylaniline (NMA) on Pt(111), using it as a model molecule to probe the activation mechanisms of aromatic amines on catalytic surfaces. Through a combination of…

材料科学 · 物理学 2025-03-25 Bushra Ashraf , Nils Brinkmann , Dave Austin , Duy Le , Katharina Al Shamery , Talat S. Rahman

Adsorption of small ligands on semiconductor surfaces is a possible route to modify these surfaces so that they can be used in biosensing and optoelectronic devices. In this work we perform density-functional theory calculations of…

材料科学 · 物理学 2019-05-01 Dennis Franke , Michael Lorke , Thomas Frauenheim , Andreia Luisa da Rosa

The adsorption of methanol (CH3OH) at the Fe3O4(001)-c(2x2) surface was studied using X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy (STM), and temperature-programmed desorption (TPD). CH3OH adsorbs exclusively at…

We present an ab initio investigation of the interaction between methane, its dehydrogenated forms and the cerium oxide surface. In particular, the stoichiometric CeO2(111) surface and the one with oxygen vacancies are considered. We study…

材料科学 · 物理学 2019-11-21 Marco Fronzi , Simone Piccinin , Bernard Delley , Enrico Traversa , Catherine Stampfl

Bi$_2$Se$_3$ is a topological insulator whose unique properties result from topological surface states (TSS) in the band gap. The adsorption of Cs onto a Bi$_2$Se$_3$ surface is investigated by low energy ion scattering and work function…

介观与纳米尺度物理 · 物理学 2019-01-09 Haoshan Zhu , Weimin Zhou , Jory A. Yarmoff

The mechanism of adsorption of the 1,4,5,8-naphthalene-tetracarboxylic-dianhydride (NTCDA) molecule on the Ag(110) surface is elucidated on the basis of extensive density functional theory calculations. This molecule, together with its…

材料科学 · 物理学 2007-05-23 Audrius Alkauskas , Alexis Baratoff , C. Bruder

We study adsorption sites of a single Xe adatom on Nb(110) surface using a density functional theory approach: The on-top site is the most favorable position for the adsorption. We compare the binding features of the present study to…

材料科学 · 物理学 2015-06-03 S. Dag , M. Shaughnessy , C. Y. Fong , X. D. Zhu , L. H. Yang

Hydrogen segregation to vacancies in the surface and subsurface layers of (111) and (100) surfaces of Pd is studied in the density functional theory (DFT) approach. Adsorption energies and configurations of various clusters of H atoms at…

材料科学 · 物理学 2020-06-24 A. V. Subashiev , H. H. Nee

In this work we investigate the electronic properties of mercaptocarboxylic acids with several carbon chain lengths adsorbed on ZnO-(10-10) surfaces via density functional theory calculations using semi-local and hybrid exchange-correlation…

材料科学 · 物理学 2018-10-05 Dennis Franke , Michael Lorke , Thomas Frauenheim , Andrea L. daRosa

Our ab initio calculations of CO adsorption energies on low miller index (111), (100), stepped (211), and kinked (532) gold surfaces show a strong dependence on local coordination with a reduction in Au atom coordination leading to higher…

材料科学 · 物理学 2009-11-13 F. Mehmood , A. Kara , T. S. Rahman , C. R. Henry

We report on experimental evidence for the formation of a two dimensional Si/Au(110) surface alloy. In this study, we have used a combination of scanning tunneling microscopy, low energy electron diffraction, Auger electron spectroscopy and…