Effective Fragment Potential-Based Molecular Dynamics Studies of Diffusion in Acetone and Hexane

Thumbnail Image
Date
2021-04-16
Authors
Kim, Yu Lim
Han, Yong
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract

To facilitate more reliable descriptions of transport properties in liquids, molecular dynamics (MD) simulations are performed based on the effective fragment potential (EFP) method derived from first-principles quantum mechanics (in contrast to MD based upon empirically fitted potentials). The EFP method describes molecular interactions in terms of Coulomb, polarization/induction, dispersion, exchange-repulsion, and charge-transfer interactions. The EFP MD simulations described in this paper, performed on hexane and acetone, are able to track the mean-square displacement of molecules for sufficient time to reliably extract translational diffusion coefficients. The results reported here are in reasonable agreement with experiment.

Series Number
Journal Issue
Is Version Of
Versions
Series
IS-J 10478
Type
article
Comments
Rights Statement
Copyright
Funding
Subject Categories
DOI
Supplemental Resources
Collections