Journal ArticleDOI
Phase transitions in liquid crystals
TLDR
A comprehensive overview of phase transition studies can be found in this article, where the authors identify the essential key concepts and points of difficulty associated with the study of phase transitions and discuss the most widely used experimental techniques for measuring these transition properties.About:
This article is published in Physics Reports.The article was published on 2000-02-01. It has received 308 citations till now. The article focuses on the topics: Phase transition & Liquid crystal.read more
Citations
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Optical refracting properties, birefringence and order parameter in mixtures of liquid crystals: Direct smectic A – Isotropic and reverse isotropic – Smectic A phase transitions
TL;DR: In this article, the optical refracting and birefringent properties of 4n-alkyl-4′-cyanobiphenyl mesogens were investigated.
Journal ArticleDOI
Revisiting McMillan's theory of the smectic A phase.
TL;DR: It is shown that McMillan's approximation underestimates both orientational and translational order, and leads to values of the transition entropies smaller than those resulting from the full expansion.
Journal ArticleDOI
4-(octyloxy)-n-(4-hexylphenyl)-2-hydroxybenzalimine thermotropic compound: morphologic, mesomorphic, thermotropic, thermooptical and thermodynamical properties
TL;DR: In this article, the mesomorphic, morphologic, thermotropic, thermooptical, and thermodynamical properties of 4-(octyloxy)-N-(4-hexylphenyl)-2-hydroxybenzalimine thermotropic liquid crystalline compound, which was synthesized by our group, have been studied in detail.
Journal ArticleDOI
Thermotropic, refracting and birefringent properties in homogeneous mixtures of 4-n-alkyl-4′-cyanobiphenyl mesogens
TL;DR: In this article, the thermotropic and thermo-optical properties in five homogeneous mixtures of 4n-alkyl-4′-cyanobiphenyl mesogens have been carried out.
Journal ArticleDOI
Transition from two-to three-dimensional behavior in anisotropic polymer layers
TL;DR: In this article, two types of anisotropic polymer systems were studied in the spherical approximation used in the classical theory of ferromagnetism, and the transition temperature Tcr of phase transition from the long-range order state to a disordered state depending on the magnitude of interaction anisotropy and the size of the layers were established.
References
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Journal ArticleDOI
Self-Consistent Equations Including Exchange and Correlation Effects
Walter Kohn,L. J. Sham +1 more
TL;DR: In this paper, the Hartree and Hartree-Fock equations are applied to a uniform electron gas, where the exchange and correlation portions of the chemical potential of the gas are used as additional effective potentials.
Journal ArticleDOI
Inhomogeneous Electron Gas
P. C. Hohenberg,Walter Kohn +1 more
TL;DR: In this article, the ground state of an interacting electron gas in an external potential was investigated and it was proved that there exists a universal functional of the density, called F[n(mathrm{r})], independent of the potential of the electron gas.
Book
Density-functional theory of atoms and molecules
TL;DR: In this paper, a review of current studies in density functional theory and density matrix functional theory is presented, with special attention to the possible applications within chemistry, including the concept of an atom in a molecule, calculation of electronegativities from the Xα method, pressure, Gibbs-Duhem equation, Maxwell relations and stability conditions.
Book
The physics of liquid crystals
P. G. de Gennes,Richard Alben +1 more
TL;DR: In this paper, the authors define an order parameter statistical theories of the nematic order phenomonological description of the nematic-isotopic mixtures and describe the properties of these mixtures.