Application of isotropic periodic sum method for 4-pentyl-4′-cyanobiphenyl liquid crystal

Takuma Nozawa, Kazuaki Z. Takahashi, Shun Kameoka, Tetsu Narumi, Kenji Yasuoka

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In future large-scale molecular dynamics (MD) simulations that will use parallel computing, the isotropic periodic sum (IPS) method is expected to effectively reduce the cost of interaction calculations while maintaining adequate accuracy. To assess the accuracy of this method in estimating low-charge-density polymer systems, we performed atomistic MD simulations of the bulk state of liquid crystal systems based on 4-pentyl-4′-cyanobiphenyl (5CB). In conditions of 270 K ≤ T ≤ 320 K and a normal pressure, the temperature dependence of the density, potential energy and order parameter was estimated using the IPS and Ewald sum method. The results of the IPS method and Ewald sum were consistent within the range of error. In conditions close to the phase transition point, however, the averaged values of potential energy and order parameter had a small difference. We concluded that the fundamental physical properties for the bulk state of 5CB systems are determined reasonably by using the IPS method, at least in conditions that are not close to the phase transition point.

Original languageEnglish
Pages (from-to)927-935
Number of pages9
JournalMolecular Simulation
Volume41
Issue number10-12
DOIs
Publication statusPublished - 2015 Aug 13

Fingerprint

Liquid Crystals
Potential energy
Liquid Crystal
Liquid crystals
Molecular dynamics
Phase transitions
liquid crystals
Computer simulation
Parallel processing systems
Charge density
Polymers
Physical properties
transition points
Order Parameter
Molecular Dynamics Simulation
Phase Transition
potential energy
molecular dynamics
Costs
Parallel Computing

Keywords

  • isotropic periodic sum method
  • liquid crystal
  • long-range interaction
  • molecular dynamics simulation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Modelling and Simulation
  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Information Systems

Cite this

Application of isotropic periodic sum method for 4-pentyl-4′-cyanobiphenyl liquid crystal. / Nozawa, Takuma; Takahashi, Kazuaki Z.; Kameoka, Shun; Narumi, Tetsu; Yasuoka, Kenji.

In: Molecular Simulation, Vol. 41, No. 10-12, 13.08.2015, p. 927-935.

Research output: Contribution to journalArticle

Nozawa, Takuma ; Takahashi, Kazuaki Z. ; Kameoka, Shun ; Narumi, Tetsu ; Yasuoka, Kenji. / Application of isotropic periodic sum method for 4-pentyl-4′-cyanobiphenyl liquid crystal. In: Molecular Simulation. 2015 ; Vol. 41, No. 10-12. pp. 927-935.
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