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
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Journal ArticleDOI
Order Parameters and Distribution in the Smectic Layer of Probe Molecules Dissolved in Ferroelectric Liquid Crystalline Mixtures
TL;DR: For a few types of relatively small probe molecules with different sizes and geometrical anisotropies, alignment-induced 13 C chemical shifts or spacings in the multiplet due to the residual dipolar interaction are measured in the anisotropic S A and S C * phases of ferroelectric liquid crystals as discussed by the authors.
Reference EntryDOI
Vibrational Spectroscopy of Liquid Crystals
TL;DR: In this paper, the authors present some applications of static and time-resolved vibrational spectroscopy to various liquid crystalline systems including low-molecular-weight nematics, ferroelectric and antiferroelectric liquid crystals (LCs), polymeric LCs, guest-host systems, and polymer-dispersed LCs.
Journal ArticleDOI
Free energies and specific heats of the nematics within nonextensive thermostatistics
Ozgur Afsar,Ozhan Kayacan +1 more
TL;DR: In this paper, the free energies and specific heats of the nematic liquid crystals are studied within Tsallis thermostatistics, in equilibrium, free energy of PAA (para-azoxyanisole) vs the order parameter is plotted, as well as its specific heat vs temperature.
7.3.7 Polymer Dispersed LCDs
TL;DR: In this article, the authors discuss preparation techniques and illustrate the working principle corresponding to different liquid crystal configurations (nematic, chiral, smectic, ferroelectric, holographic) with some examples.
Book ChapterDOI
Beyond Maier–Saupe and Onsager
TL;DR: In this paper , the authors touch upon extensions of Onsager and Maier-Saupe theory and discuss potential interpolations between Onsaga and Maie Saupe.
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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.