2014
DOI: 10.1103/physreve.89.042505
|View full text |Cite
|
Sign up to set email alerts
|

Effect of an external magnetic field on the nematic-isotropic phase transition in mesogenic systems of uniaxial and biaxial molecules: A Monte Carlo study

Abstract: We determine the nematic-isotropic coexistence curve terminating at the critical point in a temperature-external field phase diagram for nematic liquid crystals with positive diamagnetic anisotropy, where the molecules are either perfectly uniaxial or biaxial using computer simulation of a lattice model. The coexistence curve is much steeper than that predicted by the standard Landau-de Gennes and Maier-Saupe mean-field theories. For the uniaxial system the critical magnetic field is estimated to be one order … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
5

Citation Types

0
12
0

Year Published

2015
2015
2021
2021

Publication Types

Select...
5
1

Relationship

1
5

Authors

Journals

citations
Cited by 12 publications
(12 citation statements)
references
References 52 publications
0
12
0
Order By: Relevance
“…Second, restricting the lateral positions reduces computational effort. Third, lattice-models to investigate liquidcrystalline phase behaviour are well established in the literature, prominent examples being the Zwanzig model (involving discretised translational motion and discretised rotations) [33][34][35][36] and the Lebwohl-Lasher model (particles fixed to lattice sites, continuous rotational motion) [37][38][39]. These models have been successfully used to study orientational ordering both in bulk [37] and in spatially confined systems [34][35][36]38].…”
Section: Introductionmentioning
confidence: 99%
“…Second, restricting the lateral positions reduces computational effort. Third, lattice-models to investigate liquidcrystalline phase behaviour are well established in the literature, prominent examples being the Zwanzig model (involving discretised translational motion and discretised rotations) [33][34][35][36] and the Lebwohl-Lasher model (particles fixed to lattice sites, continuous rotational motion) [37][38][39]. These models have been successfully used to study orientational ordering both in bulk [37] and in spatially confined systems [34][35][36]38].…”
Section: Introductionmentioning
confidence: 99%
“…Although the work reported in Ref. [26] emphasized on the effect of an external field on uniaxial and biaxial molecules, however, from free energy analysis it established (pointed out) an important fact that molecular biaxiality weakens further the weak first order I -N U transition. The investigations presented in Ref.…”
Section: Introductionmentioning
confidence: 99%
“…More recently, a Monte Carlo (MC) simulation study [26] based on a lattice dispersion model has investigated the influences of molecular biaxiality on I -N U transition using multiple histogram reweighting technique [27] and the relevant part of the free energy has been generated for two different systems -one composed of uniaxial molecules and the other of biaxial molecules. Although the work reported in Ref.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…These electronic devices typically operate based on the interaction between Liquid Crystals and external electrical and magnetic fields. External fields can indeed be used to control ordered phases in Liquid Crystal, determine changes of their physical properties, induce phase transitions and tune critical parameters [9,10,11,12].…”
Section: Introductionmentioning
confidence: 99%