A Coupled Molecular Dynamics/Kinetic Monte Carlo Approach for Protonation Dynamics in Extended Systems.
A Coupled Molecular Dynamics/Kinetic Monte Carlo Approach for Protonation Dynamics in Extended Systems.
复制标题
扩展系统中质子化动力学的耦合分子动力学/动力学蒙特卡罗方法
DOI:
10.1021/ct500482k
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发表时间:
2014
影响因子:
5.5
通讯作者:
Sebastiani D.
中科院分区:
文献类型:
--
作者:
Kabbe G;Wehmeyer C;Sebastiani D.
We propose a multiscale simulation scheme that combines first-principles Molecular Dynamics (MD) and kinetic Monte Carlo (kMC) simulations to describe ion transport processes. On the one hand, the molecular dynamics trajectory provides an accurate atomistic structure and its temporal evolution, and on the other hand, the Monte Carlo part models the long-time motion of the acidic protons. Our hybrid approach defines a coupling scheme between the MD and kMC simulations that allows the kMC topology to adapt continuously to the propagating atomistic microstructure of the system. On the example of a fuel cell membrane material, we validate our model by comparing its results with those of the pure MD simulation. We show that the hybrid scheme with an evolving topology results in a better description of proton diffusion than a conventional approach with a static kMC transfer rate matrix. Furthermore, we show that our approach can incorporate additional dynamical features such as the coupling of the rotation of a side group in the molecular building blocks. In the present implementation, we focus on ion conduction, but it is straightforward to generalize our approach to other transport phenomena such as electronic conduction or spin diffusion.
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影响因子:
5.4
作者:
Eunseok Lee;F. Prinz;W. Cai
通讯作者:
W. Cai
影响因子:
--
作者:
J. Kang;O. Kwon;Sangkil Lee;Sang Hun Lee;Do Hyun Kim;H. Hwang
通讯作者:
H. Hwang
DOI:
10.1002/mats.1993.040020301
发表时间:
1993
期刊:
Die Makromolekulare Chemie, Theory and Simulations
影响因子:
--
作者:
D. Heermann;L. Yixue
通讯作者:
L. Yixue
DOI:
--
发表时间:
1999
期刊:
Proteins: Structure, Function, and Bioinformatics
影响因子:
--
作者:
Hongyu Zhang
通讯作者:
Hongyu Zhang
影响因子:
6.6
作者:
Liu, Jun;Liu, Changqing;Conway, Paul P.
通讯作者:
Conway, Paul P.