Phase transitions and hysteresis for a simple model liquid crystal by replica-exchange monte carlo simulations

Akie Kowaguchi, Paul E. Brumby, Kenji Yasuoka

研究成果: Article査読

抄録

In this work, the advantages of applying the temperature and pressure replica-exchange method to investigate the phase transitions and the hysteresis for liquid-crystal fluids were demonstrated. In applying this method to the commonly used Hess-Su liquid-crystal model, heat capacity peaks and points of phase co-existence were observed. The absence of a smectic phase at higher densities and a narrow range of the nematic phase were reported. The identity of the crystalline phase of this system was found to a hexagonal close-packed solid. Since the nematic-solid phase transition is strongly first order, care must be taken when using this model not to inadvertently simulate meta-stable nematic states at higher densities. In further analysis, the Weighted Histogram Analysis Method was applied to verify the precise locations of the phase transition points.

本文言語English
論文番号1421
ジャーナルMolecules
26
5
DOI
出版ステータスPublished - 2021 3 1

ASJC Scopus subject areas

  • 分析化学
  • 化学(その他)
  • 分子医療
  • 薬科学
  • 創薬
  • 物理化学および理論化学
  • 有機化学

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