Density Effects in the Landau-De Gennes Theory Near the Nematic-Isotropic Phase Transition
20 Nov 1997-International Journal of Modern Physics B (World Scientific Publishing Company)-Vol. 11, Iss: 29, pp 3479-3489
TL;DR: In this article, the density effects at the nematic-isotropic phase transition were studied by means of Landau-de-Gennes theory, and the analysis showed that the density variation shifts the NIS transition temperature TNI and changes the Landaude gennes free energy expansion coefficients.
Abstract: Density effects at the nematic–isotropic phase transition is studied by means of Landau–de Gennes theory. The analysis shows that the density variation shifts the nematic–isotropic transition temperature TNI and changes the Landau–de gennes free energy expansion coefficients. The possibility of the tricritical behaviour of the nematic–isotropic phase transition is also discussed by the density variation. The low value of TNI-T* (T* is the absolute stability limit of the isotropic phase) and the various thermodynamic quantities are also calculated to compare with the experimental data.
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