Data Filtering for Effective Analysis of Crystal-Solution Interface Molecular Dynamics Simulations.
Data Filtering for Effective Analysis of Crystal-Solution Interface Molecular Dynamics Simulations.
复制标题
用于有效分析晶体溶液界面分子动力学模拟的数据过滤
DOI:
10.1021/ct400808d
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发表时间:
2014
影响因子:
5.5
通讯作者:
Briesen
中科院分区:
文献类型:
--
作者:
Greiner;Briesen
Analysis of processes occurring at the solid-solution interface during crystal growth and dissolution simulations requires an effective way to detect rare, uncorrelated transitions from the liquid to the solid state or vice versa. Because of the oscillatory behavior of molecules, this is not a trivial problem. Usually, to take the thermal vibration and rotational flexibility of the molecules into account, the data (e.g., orientation, center of mass position) needed to determine the molecular state are averaged over some time interval. Then they are evaluated using some order parameters to classify the individual molecules as being either crystalline or in solution. In this case, the results can be very sensitive to the time interval, which is mostly chosen in some heuristic way. To suppress the problem of fast non-Markovian dynamics and to make the identification of the molecular state more reliable and robust, the application of a Kalman filter, optionally combined with a hysteretic approach, is proposed in this contribution. A scheme to estimate the filter parameters is introduced. To demonstrate the approach, simple and widely used order parameters based on the structural features of molecules are taken. The obtained results are clearly superior to those based on the data averaging technique and are important for the effective transition rates calculation as well as for the general analysis of the time evolution of interfaces.
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影响因子:
3.9
作者:
G. Einicke;Gianluca Falco;M. Dunn;D. C. Reid
通讯作者:
D. C. Reid
影响因子:
3.8
作者:
Cheong, Daniel W.;Di Boon, Yi
通讯作者:
Di Boon, Yi
影响因子:
4.4
作者:
D. Prada;R. Shevchuk;Francesco Rao
通讯作者:
Francesco Rao
DOI:
10.1063/1.3677371
发表时间:
2012
期刊:
The Journal of chemical physics
影响因子:
--
作者:
A. Reilly;H. Briesen
通讯作者:
H. Briesen
影响因子:
--
作者:
Fleming, S;Rohl, A
通讯作者:
Rohl, A