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The spectral features of water clusters provide important information on their structure and dynamics and can assist in deciphering the nature of the local environment of aqueous solutions in a variety of different conditions. Accurately…

计算物理 · 物理学 2026-03-11 T. Baird , R. Vuilleumier , S. Bonella

We present an algorithm for accelerating the search of molecule's adsorption site based on global optimization of surface adsorbate geometries. Our approach uses a machine-learning interatomic potential (moment tensor potential) to…

材料科学 · 物理学 2024-12-30 Olga Klimanova , Nikita Rybin , Alexander Shapeev

The dynamics of water molecules plays a vital role in understanding water. We combined computer simulation and deep learning to study the dynamics of H-bonds between water molecules. Based on ab initio molecular dynamics simulations and a…

无序系统与神经网络 · 物理学 2021-10-19 Jie Huang , Gang Huang , Shiben Li

Using the Deep Potential methodology, we construct a model that reproduces accurately the potential energy surface of the SCAN approximation of density functional theory for water, from low temperature and pressure to about 2400 K and 50…

化学物理 · 物理学 2021-06-16 Linfeng Zhang , Han Wang , Roberto Car , Weinan E

The hydration of ions in nanoscale hydrated clusters is ubiquitous and essential in many physical and chemical processes. Here we show that the hydrolysis reaction is strongly affected by relative humidity. The hydrolysis of CO32- with n =…

原子与分子团簇 · 物理学 2017-02-13 Hang Xiao , Xiaoyang Shi , Yayun Zhang , Xiangbiao Liao , Feng Hao , Klaus S. Lackner , Xi Chen

The development of machine learning models has led to an abundance of datasets containing quantum mechanical (QM) calculations for molecular and material systems. However, traditional training methods for machine learning models are unable…

Machine learning interatomic force fields are promising for combining high computational efficiency and accuracy in modeling quantum interactions and simulating atomistic dynamics. Active learning methods have been recently developed to…

Ab initio simulations are capable of providing detailed information of material behavior at the nanoscale. Simulating experimentally relevant situations is, however, often computationally intense. Using hybrid approaches between ab initio…

计算物理 · 物理学 2019-03-26 Michael Sluydts , Michiel Larmuseau , Johan Lauwaert , Stefaan Cottenier

A central concern of molecular dynamics simulations are the potential energy surfaces that govern atomic interactions. These hypersurfaces define the potential energy of the system, and have generally been calculated using either predefined…

计算物理 · 物理学 2019-07-05 Emir Kocer , Jeremy K. Mason , Hakan Erturk

In this work we examine the nucleation from NaCl aqueous solutions within nano-confined environments, employing enhanced sampling molecular dynamics simulations integrated with machine learning-derived reaction coordinates. Through our…

化学物理 · 物理学 2024-08-26 Ruiyu Wang , Pratyush Tiwary

While molecular dynamics (MD) is a very useful computational method for atomistic simulations, modeling the interatomic interactions for reliable MD simulations of real materials has been a long-standing challenge. In 2007, Behler and…

材料科学 · 物理学 2025-06-11 Ling Tang , Weiyi Xia , Gayatri Viswanathan , Ernesto Soto , Kirill Kovnir , Cai-Zhuang Wang

The calculation of reactive properties is a challenging task in chemical reaction discovery. Machine learning (ML) methods play an important role in accelerating electronic structure predictions of activation energies and reaction…

化学物理 · 物理学 2025-05-02 Joe Gilkes , Mark Storr , Reinhard J. Maurer , Scott Habershon

Large thermal fluctuations of the liquid phase obscure the weak macroscopic electric field that drives electrochemical reactions, rendering the extraction of reliable interfacial charge distributions from ab initio molecular dynamics…

化学物理 · 物理学 2026-04-03 Jing Yang , Bingxin Li , Samuel Mattoso , Ahmed Abdelkawy , Mira Todorova , Jörg Neugebauer

A well-known drawback of state-of-the-art machine-learning interatomic potentials is their poor ability to extrapolate beyond the training domain. For small-scale problems with tens to hundreds of atoms this can be solved by using active…

计算物理 · 物理学 2020-09-22 Max Hodapp , Alexander Shapeev

The interpretation of experiments on reactive semiconductor surfaces requires statistically significant sampling of molecular dynamics, but conventional ab initio methods are limited due to prohibitive computational costs. Machine-learning…

材料科学 · 物理学 2025-09-19 Hendrik Weiske , Rhyan Barrett , Ralf Tonner-Zech , Patrick Melix , Julia Westermayr

Deep learning is increasingly being applied in safety-critical domains. For these scenarios it is important to know the level of uncertainty in a model's prediction to ensure appropriate decisions are made by the system. Deep ensembles are…

机器学习 · 计算机科学 2022-03-17 Yassir Fathullah , Mark J. F. Gales

Machine-learning interatomic potentials (MLIPs) have enabled molecular dynamics at near ab initio accuracy, yet remain limited to energies and forces by construction, leaving electronic observables such as dipole moments and…

By adopting a perspective informed by contemporary liquid state theory, we consider how to train an artificial neural network potential to describe inhomogeneous, disordered systems. We find that neural network potentials based on local…

化学物理 · 物理学 2021-11-10 Samuel P. Niblett , Mirza Galib , David T. Limmer

Ultrafast, time-resolved spectroscopies enable the direct observation of non-equilibrium processes in condensed-phase systems and have revealed key insights into energy transport, hydrogen-bond dynamics, and vibrational coupling. While ab…

化学物理 · 物理学 2025-09-01 Kit Joll , Philipp Schienbein

Describing the interactions of water molecules is one of the most common, yet critical, tasks in molecular dynamics simulations. Because of its unique properties, hundreds of attempts have been made to construct an ideal interaction…

化学物理 · 物理学 2025-06-23 Bálint Soczó , Ildikó Pethes