Dielectric shape dispersion and biaxial transitions in nematic liquid crystals.

@article{Sonnet2003DielectricSD,
  title={Dielectric shape dispersion and biaxial transitions in nematic liquid crystals.},
  author={Andr{\'e} M Sonnet and Epifanio G. Virga and Georges E Durand},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2003},
  volume={67 6 Pt 1},
  pages={061701}
}
Using two order tensors, we propose a mean-field model to describe the uniaxial and biaxial phases of nematogenic molecules presenting a shape dispersion of their biaxial dielectric susceptibility. We recover the classical isotropic-uniaxial-biaxial sequence of phases. The phase diagram exhibits a tricritical point, a feature that cannot be retraced in the other mean-field models established for molecules without shape dispersion. 

From This Paper

Topics from this paper.