scholarly journals Studies on Many－Body Interactions and Molecular Dynamics Simulations for the Hugoniot Curves of Liquid Argon

2000 ◽  
Vol 49 (1) ◽  
pp. 114
Author(s):  
Wang Fan－ hou ◽  
Yang Chuan－lu ◽  
Li Xi－jun ◽  
Jing Fu－qian
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Liquid Argon ◽  
Many Body ◽  
Dynamics Simulations ◽  
Hugoniot Curves ◽  
Many Body Interactions

scholarly journals Bond order redefinition needed to reduce inherent noise in molecular dynamics simulations

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ibnu Syuhada ◽  
Nikodemus Umbu Janga Hauwali ◽  
Ahmad Rosikhin ◽  
Euis Sustini ◽  
Fatimah Arofiati Noor ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Bond Order ◽  
Interatomic Potential ◽  
Interatomic Potentials ◽  
Many Body ◽  
Range Interaction ◽  
Dynamics Simulations ◽  
Interaction Approach ◽  
Many Body Interactions

AbstractIn this work, we present the bond order redefinition needed to reduce the inherent noise in order to enhance the accuracy of molecular dynamics simulations. We propose defining the bond order as a fraction of energy distribution. It happens due to the character of the material in nature, which tries to maintain its environment. To show the necessity, we developed a factory empirical interatomic potential (FEIP) for carbon that implements the redefinition with a short-range interaction approach. FEIP has been shown to enhance the accuracy of the calculation of lattice constants, cohesive energy, elastic properties, and phonons compared to experimental data, and can even be compared to other potentials with the long-range interaction approach. The enhancements due to FEIP can reduce the inherent noise, then provide a better prediction of the energy based on the behaviour of the atomic environment. FEIP can also transform simple two-body interactions into many-body interactions, which is useful for enhancing accuracy. Due to implementing the bond order redefinition, FEIP offers faster calculations than other complex interatomic potentials.

Molecular Dynamics Simulations of Low-Energy Ion/Surface Interactions During Vapor Phase Crystal Growth: 10 eV Si Incident on Si(001)2×1

1989 ◽  
Vol 157 ◽  
Author(s):  
M. Kitabatake ◽  
P. Fons ◽  
J. E. Greene
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Unit Cell ◽  
Many Body ◽  
Energy Redistribution ◽  
Surface Unit ◽  
Phase Crystal ◽  
Dynamics Simulations ◽  
Body Potential ◽  
Surface Unit Cell

ABSTRACTMolecular dynamics simulations, utilizing the Tersoff many-body potential, were used to investigate the effects of 10 eV Si atom bombardment of a (001)2×1 terminated Si lattice. The irradiation events were initiated at an array of points in the primitive surface unit cell. Each event was followed to determine kinetic energy redistribution in the lattice as a function of time, projectile and lattice atom trajectories, and the nature, number, and depth of residual defects. Dimer breaking, epitaxial growth, position exchange, and the formation of residual hexagonal and split interstitials were observed. There were no residual vacancies. Impact points leading to each of the above results clustered in distinctly different regions of the surface unit cell. Bulk interstitials were annealed out over time scales corresponding to monolayer deposition during Si MBE.

Molecular-Dynamics Simulations of Collisions of Buckminsterfullerene with Diamond Surfaces

1990 ◽  
Vol 206 ◽  
Author(s):  
R.C. Mowrey ◽  
D.W. Brenner ◽  
B.I. Dunlap ◽  
J.W. Mintmire ◽  
C.T. White
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Center Of Mass ◽  
Potential Energy Function ◽  
Diamond Surface ◽  
Many Body ◽  
Diamond Surfaces ◽  
Gas Phase Dissociation ◽  
Dynamics Simulations ◽  
Body Potential

ABSTRACTWe have performed molecular dynamics simulations using a recently developed empirical many-body potential energy function to study the collision of the C60 isomer buckmin-sterfullerene with a hydrogen-terminated diamond surface. The simulations indicate that the cluster can react with the surface and has a larger probability of gaining atoms from the surface than of losing atoms to the surface. We have investigated the dependence of the reaction probability on the initial center-of-mass translational velocity of the cluster. The structures and energy distributions of the product clusters have been determined. Both inelastically and reactively scattered clusters have large amounts of internal energy which suggests that gas-phase dissociation is likely.

Molecular dynamics simulations of CO2 reduction on Cu(111) and Cu/ZnO(10 1¯ 0) using charge optimized many body potentials

2014 ◽  
Vol 52 ◽  
pp. 84-87 ◽  
Author(s):  
Tao Liang ◽  
Yu-Ting Cheng ◽  
Xiaowa Nie ◽  
Wenjia Luo ◽  
Aravind Asthagiri ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Co2 Reduction ◽  
Many Body ◽  
Dynamics Simulations
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