Lines of invariant physics in the isotropic phase of the discotic Gay-Berne model

被引：1

作者：

Mehri, Saeed ^{[1
]}

Kolmangadi, Mohamed A. ^{[2
]}

Dyre, Jeppe C. ^{[1
]}

Ingebrigtsen, Trond S. ^{[1
]}

机构：

[1] Roskilde Univ, Dept Sci & Environm, IMFUFA, Glass & Time, POB 260, DK-4000 Roskilde, Denmark

[2] Bundesanstalt Mat Forsch & Prufung, Unter Eichen 87, D-12205 Berlin, Germany

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS-X | 2022年 / 14卷

关键词：

ANISOTROPIC SYSTEMS; COMPUTER-SIMULATION; LIQUID-CRYSTALS; RELAXATION; DIAGRAM;

D O I：

10.1016/j.nocx.2022.100085

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The Gay -Berne model is studied numerically with a choice of parameters allowing for the formation of a discotic liquid crystal at low temperatures. We show that the model has strong virial potential -energy correlations in the isotropic phase at high temperatures, i.e., it obeys the criterion for the existence of isomorphs, which are curves of approximately invariant structure and dynamics. These properties are demonstrated to be approximately invariant in reduced units along the isomorph studied. The isomorph is described well by the constant density -scaling exponent 11.5, a number that is significantly larger than the density -scaling exponents of various Lennard-Jones models that are always below 6.

引用

页数：7

共 34 条

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