Several coarse-graining (CG) methods have been combined to develop a CG model of water capable of the accurate prediction of structure and dynamics properties. The multiscale coarse-graining (MS-CG) method based on force matching and the PDF-based coarse-graining method were used for accurate dynamics prediction. The iterative Boltzmann inversion (IBI) method was added for accurate structure representation. The approach is applied to bulk water, and the results show close reproduction of the CG structure when compared with the reference atomistic data. The combination of MS-CG and IBI methods facilitates the development of CG force fields at different temperatures based on a single MS-CG coarse-graining procedure. The dynamic properties of the CG water model closely match those obtained from the reference atomistic system. The general application of this approach to any existing coarse-graining methods is discussed.
|Number of pages
|Published - Jul 26 2022
Bibliographical noteFunding Information:
This research was supported by the U.S. Department of Energy Office of Science Visiting Faculty Program (VFP) under its contract with Iowa State University, Contract No. DE-AC02-07CH11358 and by NASA Kentucky under NASA Award No. NNX15AR69H. The authors gratefully acknowledge Professor G. A. Voth for providing the multiscale coarse-graining (MS-CG) software. Also, the authors acknowledge UK undergraduate students A. Doom and J. Pole for their support in conducting experiments and data analysis.
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ASJC Scopus subject areas
- Chemistry (all)
- Chemical Engineering (all)