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Understanding the atomic structure and energetic stability of ferrite-cementite interfaces is essential for optimizing the mechanical performance of steels, especially under extreme conditions such as those encountered in nuclear fusion…

材料科学 · 物理学 2025-06-09 Pablo Canca , Chu-Chun Fu , Christophe J. Ortiz , Blanca Biel

Motivated by recent studies on the dynamics of colloidal solutions in narrow channels, we consider the steady state properties of an assembly of non interacting particles subject to the action of a traveling potential moving at a constant…

软凝聚态物质 · 物理学 2009-11-13 Pedro Tarazona , Umberto Marini Bettolo Marconi

Determining the melting curves of materials up to high pressures has long been a challenge experimentally and theoretically. A large class of materials, including most metals, has been shown to exhibit hidden scale invariance, an…

材料科学 · 物理学 2024-03-18 Laura Friedeheim , Felix Hummel , Jeppe C. Dyre , Nicholas P. Bailey

Density functional theory predicts clusters in the form of the C15 Laves phase to be the most stable cluster of self-interstitials in iron at small sizes. The C15 clusters can form as a result of irradiation, but their prevalence and…

材料科学 · 物理学 2020-01-29 Jesper Byggmästar , Fredric Granberg

Using dynamical density functional theory (DDFT) methods we investigate the laning instability of a sheared colloidal suspension. The nonequilibrium ordering at the laning transition is driven by non-affine particle motion arising from…

软凝聚态物质 · 物理学 2018-01-03 Alberto Scacchi , Andrew J. Archer , Joseph M. Brader

Density functional theory (DFT) underpins modern atomistic simulations of transition-metal surfaces. It can predict key properties linked to catalytic performance, such as adsorption energies and barrier heights, enabling new paradigms in…

材料科学 · 物理学 2026-03-23 Benjamin X. Shi , Timothy C. Berkelbach

In this contribution we present the results of Density-Functional Theory (DFT) calculations of platelets as modelled by infinite planar arrangements of hydrogen atoms and vacancies in (100) planes of silicon. From the observation of the…

材料科学 · 物理学 2011-11-29 Liviu Bîlteanu , Jean-Paul Crocombette

We investigate the impact of dissipation on the energy balance in the electron dynamics of metal clusters excited by strong electro-magnetic pulses. The dynamics is described theoretically by Time-Dependent Density-Functional Theory (TDDFT)…

介观与纳米尺度物理 · 物理学 2017-02-01 M. Vincedon , E. Suraud , P. -G. Reinhard

High-kappa dielectrics for insulating layers are a current key ingredient of microelectronics. X2O3 sesquioxide compounds are among the candidates. Here we show for a typical material of this class, ScO3, that the relatively modest…

材料科学 · 物理学 2009-11-13 Pietro Delugas , Vincenzo Fiorentini , Alessio Filippetti

To explore the potential of molecular gas treatment of freshly cut lithium foils in non-electrolyte based passivation of high energy-density Li anodes, density functional theory (DFT) has been used to study the decomposition of molecular…

材料科学 · 物理学 2015-06-01 Stephan L. Koch , Benjamin J. Morgan , Stefano Passerini , Gilberto Teobaldi

Although atomic diffusion on metal surfaces under high electric fields has been studied theoretically and experimentally since the 1970s, its accurate and quantitative theoretical description remains a significant challenge. In our previous…

材料科学 · 物理学 2022-01-11 Ekaterina Baibuz , Andreas Kyritsakis , Ville Jansson , Flyura Djurabekova

We present recent theoretical investigations on the dynamics of metal clusters in contact with an environment, deposited of embedded. This concerns soft deposition as well as irradiation of the deposited/embedded clusters by intense laser…

原子与分子团簇 · 物理学 2010-01-05 P. M. Dinh , P. -G. Reinhard , E. Suraud

We present a novel methodology to compute relaxed dislocations core configurations, and their energies in crystalline metallic materials using large-scale \emph{ab-intio} simulations. The approach is based on MacroDFT, a coarse-grained…

计算物理 · 物理学 2020-02-19 Mauricio Ponga , Kaushik Bhattacharya , Michael Ortiz

Droplets of a pure fluid, such as water, in an open container surrounded by gas, are thermodynamically unstable and evaporate quickly. In a recent paper [Archer et al. J. Chem. Phys. {\bf 159}, 194403 (2023)] we employed lattice density…

软凝聚态物质 · 物理学 2025-12-17 Melih Gül , Andrew J Archer , Benjamin D Goddard , Roland Roth

Metallic films are important in catalysis, magneto-optic storage media, and interconnects in microelectronics, and it is crucial to predict and control their morphologies. The evolution of a growing crystal is determined by the behavior of…

材料科学 · 物理学 2016-11-03 C. Ratsch , P. Ruggerone , M. Scheffler

Fluids in nanopores are of importance for many engineering applications, including energy storage in supercapacitors, hydrocarbons recovery from unconventional sources, or water desalination. Thermodynamic properties of fluids confined in…

化学物理 · 物理学 2026-02-25 Gennady Y. Gor , Geordy Jomon , Andrei L. Kolesnikov

With the rise of two-dimensional (2D) materials, unique properties that are completely distinct from bulk counterparts continue to emerge at low-dimensional scales, presenting numerous opportunities and challenges. It also provides a new…

材料科学 · 物理学 2023-12-18 Rui Song , Bili Wang , Kai Feng , Jia Yao , Mengjie Lu , Jing Bai , Shuai Dong , Ming An

Over the last few decades, classical density-functional theory (DFT) and its dynamic extensions (DDFTs) have become powerful tools in the study of colloidal fluids. Recently, previous DDFTs for spherically-symmetric particles have been…

统计力学 · 物理学 2016-08-02 Miguel A. Durán-Olivencia , Benjamin D. Goddard , Serafim Kalliadasis

Analytical gradients of the total energy are provided for local density and generalized-gradient hybrid approximations to generalized Kohn-Sham spin-current density functional theory (SCDFT). It is shown that gradients may be determined…

材料科学 · 物理学 2023-07-21 Jacques K. Desmarais , Alessandro Erba , Jean-Pierre Flament

The stability and structures of Titanium-doped Gold clusters AunTi (n=2-16) are studied under the relativistic all-electron density-functional calculations. It is found that the most stable structures of AunTi clusters with n=2-7 are…

原子与分子团簇 · 物理学 2007-05-23 Ming-Xing Chen , X. H. Yan