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- W2329546643 endingPage "12049" @default.
- W2329546643 startingPage "12034" @default.
- W2329546643 abstract "We present a method of DPD simulation based on a coarse-grained effective pair potential obtained from the DRISM-KH molecular theory of solvation. The theory is first used to calculate the radial distribution functions of all-atom solute monomers in all-atom solvent and then to invert them into an effective pair potential between coarse-grained beads such that their fluid without solvent accounts for molecular specificities and solvation effects in the all-atom system. Bonded interactions are sampled in relatively short MD of the all-atom system and modeled with best multi-Gaussian fit. Replacing the heuristically defined conservative force potential in DPD, the coarse-grained effective pair potential is free from the artificial restrictions on potential range and shape and on equal volume of solute and solvent blobs inherent in standard DPD. The procedure is flexible in specifying coarse-grained mapping and enormously increases computational efficiency by eliminating solvent. The method is validated on polystyrene chains of various length in toluene at finite concentrations for room and polystyrene glass transition temperature. It yields the chain elastic properties and diffusion coefficient in good agreement with experiment and all-atom MD simulations. DPD with coarse-grained effective pair potential is capable of predicting both structural and dynamic properties of polymer solutions and soft matter with high accuracy and computational efficiency." @default.
- W2329546643 created "2016-06-24" @default.
- W2329546643 creator A5004675177 @default.
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- W2329546643 creator A5015709875 @default.
- W2329546643 creator A5033365409 @default.
- W2329546643 creator A5073516327 @default.
- W2329546643 date "2014-10-06" @default.
- W2329546643 modified "2023-09-29" @default.
- W2329546643 title "Dissipative Particle Dynamics with an Effective Pair Potential from Integral Equation Theory of Molecular Liquids" @default.
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