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We calculate the self diffusion coefficients $D_S$ for the species $s=1,2$ of a mixture, and show that a general scaling relation $D_2{\sim}D_1^a$ with a non universal exponent $a$ holds. The generalized diffusion coefficients, dependent on…

软凝聚态物质 · 物理学 2018-09-26 Neeta Bidhoodi , Shankar P. Das

A critical challenge for density functional theory (DFT) in practice is its limited ability to treat static electron correlation, leading to errors in its prediction of charges, multiradicals, and reaction barriers. Recently, we combined…

化学物理 · 物理学 2024-11-05 Daniel Gibney , Jan-Niklas Boyn , David A. Mazziotti

Dynamical Mean-Field Theory (DMFT) has established itself as a reliable and well-controlled approximation to study correlation effects in bulk solids and also two-dimensional systems. In combination with standard density-functional theory…

原子与分子团簇 · 物理学 2015-05-30 V. Turkowski , A. Kabir , N. Nayyar , Talat S. Rahman

Adsorption geometry and stability of organic molecules on surfaces are key parameters that determine the observable properties and functions of hybrid inorganic/organic systems (HIOSs). Despite many recent advances in precise experimental…

The average energy curvature as a function of the particle number is a molecule-specific quantity, which measures the deviation of a given functional from the exact conditions of density functional theory (DFT). Related to the lack of…

化学物理 · 物理学 2020-11-11 Alberto Fabrizio , Benjamin Meyer , Clemence Corminboeuf

We present a theoretical framework based on an extension of dynamical density functional theory (DDFT) for describing the structure and dynamics of cells in living tissues and tumours. DDFT is a microscopic statistical mechanical theory for…

软凝聚态物质 · 物理学 2018-09-03 Hayder M. Al-Saedi , Andrew J. Archer , John Ward

An important ingredient of any moving-mesh method for fluid-structure interaction (FSI) problems is the mesh deformation technique (MDT) used to adapt the computational mesh in the moving fluid domain. An ideal technique is computationally…

计算工程、金融与科学 · 计算机科学 2020-06-26 Alexander Shamanskiy , Bernd Simeon

Quantum mechanical methods based on the density functional theory (DFT) offer a realistic possibility of first-principles design of organic donor-acceptor systems and engineered band-gap materials. This promise is contingent upon the…

The structural and interfacial properties of a nanoscopic liquid drops are assessed by means of mechanical, thermodynamical, and statistical mechanical approaches that are discussed in detail, including original developments at both the…

软凝聚态物质 · 物理学 2012-11-12 Alexandr Malijevsky , George Jackson

Accelerated discovery with machine learning (ML) has begun to provide the advances in efficiency needed to overcome the combinatorial challenge of computational materials design. Nevertheless, ML-accelerated discovery both inherits the…

材料科学 · 物理学 2022-05-09 Chenru Duan , Fang Liu , Aditya Nandy , Heather J. Kulik

In the strong field molecular tunneling ionization theory of Tong et al. [Phys. Rev. A 66, 033402 (2002)], the ionization rate depends on the asymptotic wavefunction of the molecular orbital from which the electron is removed. The orbital…

原子物理 · 物理学 2015-05-18 Song-Feng Zhao , Cheng Jin , Anh-Thu Le , T. F. Jiang , C. D. Lin

The very good performance of modern density functional theory for molecular geometries and harmonic vibrational frequencies has been well established. We investigate the performance of density functional theory (DFT) for quartic force…

化学物理 · 物理学 2007-05-23 A. Daniel Boese , Wim Klopper , Jan M. L. Martin

Frictional properties of interfaces with dynamic chemical bonds have been the subject of intensive experimental investigation and modeling, as it provides important insights into the molecular origin of the empirical rate and state laws,…

介观与纳米尺度物理 · 物理学 2020-01-24 Wengen Ouyang , Yao Cheng , Ming Ma , Michael Urbakh

Density functional theory (DFT) based modeling of electronic excited states is of importance for investigation of the photophysical/photochemical properties and spectroscopic characterization of large systems. The widely used linear…

化学物理 · 物理学 2021-05-11 Diptarka Hait , Martin Head-Gordon

Molecular-level understanding of the interactions between the constituents of an atomic structure is essential for designing novel materials in various applications. This need goes beyond the basic knowledge of the number and types of…

Dynamical density functional theory (DDFT) has been successfully derived and applied to describe on the one hand passive colloidal suspensions, including hydrodynamic interactions between individual particles. On the other hand, active…

统计力学 · 物理学 2016-01-18 Andreas M. Menzel , Arnab Saha , Christian Hoell , Hartmut Löwen

Using conceptually and procedurally consistent density functional theory (DFT) calculations with an advanced meta-GGA exchange-correlation functional in ab initio molecular dynamics simulations, we determine the insulator-metal transition…

Large biomolecular systems, whose function may involve thousands of atoms, cannot easily be addressed with parameter-free density functional theory (DFT) calculations. Until recently a central problem was that such systems possess an…

材料科学 · 物理学 2026-01-29 Kristian Berland , Elisa Londero , Elsebeth Schroder , Per Hyldgaard

Density fitting is used throughout quantum chemistry to simplify the electron-electron interaction energy (EE). A fundamental property of quantum chemistry, and DFT in particular, is that a variational principle connects the EE to a…

材料科学 · 物理学 2016-06-08 Brett I Dunlap , Mark C Palenik

The influence of a chemically or electrically heterogeneous distribution of interaction sites at a planar substrate on the number density of an adjacent fluid is studied by means of classical density functional theory (DFT). In the case of…

软凝聚态物质 · 物理学 2018-05-25 Maximilian Mußotter , Markus Bier , S. Dietrich