New method for constant- NPT molecular dynamics

Minjung Kim, Eunji Kim, Seunghoon Lee, Jun Soo Kim, Sangyoub Lee

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The well-established molecular dynamics simulation methods for constant-NPT ensemble systems such as the Andersen-Nosé-Hoover method and their variants may alter the dynamic properties of the molecules under consideration, because their equations of motion are modified by the coupling with thermostat or barostat. To circumvent this artifact, we propose a new molecular dynamics simulation algorithm, by which only the molecules near the wall of the simulation box are coupled to the thermostat and barostat and the molecules of interest placed in the inner part of the simulation box remain intact. We test the efficiency of our algorithm in attaining the target temperature and pressure and the conformity of the calculated equilibrium and dynamic properties to those of a constant-NPT ensemble system.

Original languageEnglish
Pages (from-to)1689-1699
Number of pages11
JournalJournal of Physical Chemistry A
Volume123
Issue number8
DOIs
StatePublished - 28 Feb 2019

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