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  • Title: Monte Carlo study with reweighting of uniaxial nematic liquid crystals composed of biaxial molecules.
    Author: Ghoshal N, Pramanick S, DasGupta S, Roy SK.
    Journal: Phys Rev E; 2019 Feb; 99(2-1):022703. PubMed ID: 30934352.
    Abstract:
    We present a high accuracy Monte Carlo simulation study of the uniaxial nematic (N_{U}) to isotropic (I) phase transition of a lattice dispersion model of uniaxial nematics composed of biaxial molecules. The N_{U}-I coexistence curve terminating at the Landau critical point has been determined using the multiple histogram reweighting technique. A close investigation reveals a sharp departure in the nature of the N_{U}-I coexistence curve in the temperature-biaxiality parameter phase diagram in comparison to the earlier theoretical (either mean-field or computer simulation) predictions. The coexistence curve shows a change in curvature with increasing value of the degree of molecular biaxiality.
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