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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The isotropic–nematic phase transition in hard, slightly curved, lens-like particles
Giorgio Cinacchi,Alessandro Tani +1 more
TL;DR: It is shown quantitatively that this already quite weak but distinctly first-order phase transition weakens further upon curving the platelets to such an extent that, thanks to the thinness of these particles, an isotropic-nematic tricritical point limit can be arbitrarily closely approached.
Journal ArticleDOI
Inducement by directional fields of rotational and translational phase ordering in polymer liquid-crystals.
TL;DR: The simulations suggest that field-induced orientational ordering can give rise to positional ordering, and for highly asymmetric rod-coil copolymers, the microphase separation pattern formed by the rigid segments can be altered by an aligning field.
Journal ArticleDOI
Design and Simulation of Tunable Phase Shifters Based on Liquid Crystals
TL;DR: In this article, the use of liquid crystals for three types of tunable phase shifters in planar technology is proposed, which are a microstrip line phase shifter, an access coplanar wave guide phase shift, and a symmetric stub phase shift with a liquid crystal cavity.
Journal ArticleDOI
Phenomenological theory of phase transition from isotropic to uniaxial, biaxial, and reentrant nematic phases in achiral liquid crystals
TL;DR: In this paper, the topological properties of phase diagrams of liquid crystals with achiral molecules (mesogens) were studied for transitions from the isotropic to uniaxial and biaxonial phases by using the phenomenological Landau-de Gennes theory.
Journal ArticleDOI
The influence of multi-walled carbon nanotube doping on liquid crystalline phase transitions of a smectogen octylcyanobiphenyl: A high-resolution birefringence study
TL;DR: In this article, high-resolution optical birefringence measurements are reported on the weakly first order nematicisotropic (N-I) and the continuous nematic-smectic A (N -Sm A) phase transitions in smectic liquid crystal 8CB (octylcyanobiphenyl) doped with both pristine multi-walled carbon nanotubes (p-MWCNTs) and carboxyl group functionalized MWCNTs (f-MW CNTs).
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.