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Molecular dynamics simulations have become essential in many areas of atomistic modelling from drug discovery to materials science. They provide critical atomic-level insights into key dynamical events experiments cannot easily capture.…

生物物理 · 物理学 2024-06-14 Tiejun Wei , Balint Dudas , Edina Rosta

Extensive molecular dynamics computer simulations have been conducted for ethanol-water liquid mixtures in the water-rich side of the composition range, with 10, 20 and 30 mol % of the alcohol, at temperatures between room temperature and…

化学物理 · 物理学 2019-06-12 Szilvia Pothoczki , László Pusztai , Imre Bakó

We present a probabilistic approach to water-water hydrogen bonding that allows one to obtain an analytic expression for the number of bonds per water molecule as a function of both its distance to a hydrophobic particle and hydrophobe…

软凝聚态物质 · 物理学 2013-03-20 Yuri S. Djikaev , Eli Ruckenstein

Predicting the asymmetric structure and dynamics of solvated hydroxide and hydronium in water has been a challenging task from ab initio molecular dynamics (AIMD). The difficulty mainly comes from a lack of accurate and efficient…

化学物理 · 物理学 2022-07-20 Renxi Liu , Chunyi Zhang , Xinyuan Liang , Jianchuan Liu , Xifan Wu , Mohan Chen

A comprehensive microscopic understanding of ambient liquid water is a major challenge for $ab$ $initio$ simulations as it simultaneously requires an accurate quantum mechanical description of the underlying potential energy surface (PES)…

化学物理 · 物理学 2019-10-28 Hsin-Yu Ko , Linfeng Zhang , Biswajit Santra , Han Wang , Weinan E , Robert A. DiStasio , Roberto Car

We report calculations of the surface tension of the water-air interface using ab initio molecular dynamics (AIMD) simulations. We investigate the simulation cell size dependence of the surface tension of water from force field molecular…

化学物理 · 物理学 2016-06-22 Yuki Nagata , Tatsuhiko Ohto , Mischa Bonn , Thomas D Kühne

Accurate prediction of the water properties from a low-cost ab-initio method still a foremost problem for chemists and physicist. Though density functional approaches starting from semilocal to hybrid functionals are tested, those are not…

材料科学 · 物理学 2019-10-01 Subrata Jana , Lucian A. Constantin , Prasanjit Samal

Direct numerical simulations (DNS) are one of the main ab initio tools to study turbulent flows. However, due to their considerable computational cost, DNS are primarily restricted to canonical flows at moderate Reynolds numbers, in which…

流体动力学 · 物理学 2024-09-17 Arnab Moitro , Sai Sandeep Dammati , Alexei Y. Poludnenko

Stimulated by the renewed interest and recent developments in semi-empirical quantum chemical (SQC) methods for noncovalent interactions, we examine the properties of liquid water at ambient conditions by means of molecular dynamics (MD)…

We report on an extensive study of the viscosity of liquid water at near-ambient conditions, performed within the Green-Kubo theory of linear response and equilibrium ab initio molecular dynamics (AIMD), based on density-functional theory…

材料科学 · 物理学 2022-07-05 Cesare Malosso , Linfeng Zhang , Roberto Car , Stefano Baroni , Davide Tisi

Transition metal dichalcogenides (TMDs) are a class of two-dimensional (2D) materials been widely studied for emerging electronic properties. In this work, we use computational simulations to examine the water adsorption on TMDs…

计算物理 · 物理学 2024-02-20 Siheng Li , Keyang Liu , Jiří Klimeš , Ji Chen

Ab initio molecular dynamics (AIMD) simulations have been performed on aqueous solutions of four simple sugars, {\alpha}-D-glucose, \b{eta}-D-glucose, {\alpha}-D-mannose and {\alpha}-D-galactose. Hydrogen bonding (HB) properties, such as…

化学物理 · 物理学 2024-05-24 Imre Bakó , László Pusztai , Szilvia Pothoczki

In this work, we present Enhanced Representation-Based Sampling (ERBS), a novel enhanced sampling method designed to generate structurally diverse training datasets for machine-learned interatomic potentials. ERBS automatically identifies…

化学物理 · 物理学 2026-01-23 Moritz René Schäfer , Johannes Kästner

Free-energy differences between pairs of end-states can be estimated based on molecular dynamics (MD) simulations using standard pathway-dependent methods such as thermodynamic integration (TI), free-energy perturbation, or Bennett's…

By including a fraction of exact exchange (EXX), hybrid functionals reduce the self-interaction error in semi-local density functional theory (DFT), and thereby furnish a more accurate and reliable description of the electronic structure in…

计算物理 · 物理学 2021-05-10 Hsin-Yu Ko , Junteng Jia , Biswajit Santra , Xifan Wu , Roberto Car , Robert A. DiStasio

We present the Empirical Dust Attenuation (EDA) framework -- a flexible prescription for assigning realistic dust attenuation to simulated galaxies based on their physical properties. We use the EDA to forward model synthetic observations…

The proton-magnetic reaction is commonly used in MRI machines with a strong magnetic field of over 1 T, while this study hypothesized that the electron magnetic reaction of hydrogen could affect the hydrogen bonds of double-stranded DNA…

其他定量生物学 · 定量生物学 2024-07-02 Yeon Sook Kim , Dae Gwan Lee , Suk Keun Lee

Electrodermal activity (EDA) is widely used in wearable Internet of Medical Things (IoMT) systems for continuous health monitoring, including autonomic assessment. However, EDA signals are highly vulnerable to motion artifacts and…

信号处理 · 电气工程与系统科学 2026-05-08 Yongbin Lee , Andrew Peitzsch , Youngsun Kong , Jarod Zizza , Dong-hee Kang , Farnoush Baghestani , Ki H. Chon

We propose a new molecular simulation framework that combines the transferability, robustness and chemical flexibility of an ab initio method with the accuracy and efficiency of a machine learned force field. The key to achieve this mix is…

计算物理 · 物理学 2020-01-08 Sebastian Dick , Marivi Fernandez-Serra

In this work, we report the results of a series of density functional theory (DFT) based ab initio molecular dynamics (AIMD) simulations of ambient liquid water using a hierarchy of exchange-correlation (XC) functionals to investigate the…

软凝聚态物质 · 物理学 2014-10-13 Robert A. DiStasio , Biswajit Santra , Zhaofeng Li , Xifan Wu , Roberto Car