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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Contributions of repulsive and attractive interactions to nematic order
TL;DR: In this article, both repulsive and attractive molecular interactions can be used to explain the onset of nematic order, and the object of this paper is to combine these two nematogenic molecular interactions in a unified theory.
Journal ArticleDOI
Efficient methodology with potential uses of Fresnel diffractometry for real-time study of uniaxial nematic liquid crystal phase transitions
Narges Madadi,Mohammad Amiri +1 more
TL;DR: In this article , the authors proposed a method based on Fresnel diffraction (FD) from phase objects, which has been employed over the past 20 years in several accurate and precise metrological applications.
Posted Content
Structural heterogeneity: a topological characteristic to track the time evolution of soft matter systems
Ingrid A. Membrillo Solis,Tetiana Orlova,Karolina Bednarska,Piotr Lesiak,Tomasz R. Wolinski,Giampaolo D'Alessandro,Jacek Brodzki,Malgosia Kaczmarek +7 more
TL;DR: In this paper, structural heterogeneity is introduced for semi-ordered materials to capture their degree of organization at a mesoscopic level and track their time-evolution, ultimately detecting the order-disorder transition at the microscopic scale.
Journal ArticleDOI
Voltage Dependence of Phase Transition Temperatures of a Nematic Liquid Crystal under AC Field-Driven Electroconvection
Jong-Hoon Huh,Tomoyuki Nagaya +1 more
TL;DR: In this paper , the phase transitions between isotropic and nematic liquid crystal phases in the presence of AC voltages, which provide various director fields, were investigated in continuous cooling and heating processes at a fixed rate (R = 10 °C/min).
Journal ArticleDOI
Investigating of dielectric anisotropy and birefringence of binary liquid crystal mixtures
TL;DR: In this article, the absorbance, capacitance, conductance, dielectric anisotropy and birefringence properties and splay elastic coefficient of 4'-Hexyl-4-biphenylcarbonitrile (6CB) and its mixture with 4' -Octyl- 4-biophenyl carbonitrile(8CB) were investigated.
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.