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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Towards in silico liquid crystals. Realistic transition temperatures and physical properties for n-cyanobiphenyls via molecular dynamics simulations.
TL;DR: By using the united-atom force field developed herein, it is shown that the experimental isotropic-nematic transition temperatures are reproduced within 4 K, allowing a molecular-level interpretation of the odd-even effect along the series.
Journal ArticleDOI
Structure And Thermodynamics of Weakly Segregated Rod-Coil Block Copolymers
TL;DR: In this paper, the selfassembly of a series of monodisperse rod−coil block copolymers is studied in the weak segregation limit, and the order to microphase disorder transition (ODT) and nematic isotropic (NI) transition are experimentally investigated.
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Mechanochromic luminescence of halide-substituted difluoroboron β-diketonate dyes
TL;DR: In this paper, the effects of halide substituents on mechanochromic luminescence quenching were investigated for a series of difluoroboron β-diketonate (BF2bdk) compounds.
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Universalization of the Phase Diagram for a Model Rod-Coil Diblock Copolymer
TL;DR: In this paper, the Flory−Huggins interaction is measured for a model rod-coil block copolymer system, poly(alkoxyphenylenevinylene-b-isoprene), by fitting the interfacial segregation of block copolerant to a homopolymer interface and by using the random phase approximation (RPA) for block co-olymers.
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Insight into entropy
TL;DR: In this article, the qualitative character of entropy has been investigated and several examples from statistical mechanics (including liquid crystal reentrant phases, two different lattice gas models, and the game of poker) demonstrate facets of this difficult question and point toward an answer.
References
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Journal ArticleDOI
Comparative study of the nematic phase-isotropic phase transition in systems of uniaxial hard cores
TL;DR: In this article, the authors apply the smoothed density approximation to study the nematic phase-isotropic phase transition (N-I) for the following systems: hard ellipsoids of revolution (HE), hard spherocylinders (HSC), and cylinders (HC) and find that the transition is very sensitive to the shape of the hard core modelling a liquid crystal molecule.
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Evidence for Polymorphism within the So-called “Blue Phase” of Cholesteric Esters. I. Calorimetric and Microscopic Measurements
K. Bergmann,H. Stegemeyer +1 more
TL;DR: The existence of two thermodynamically stable polymorphic forms of the so-called "blue phase" of cholesteryl nonanoate and myristate was confirmed by Calorimetric measurements as well as microscopic observations.
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Heat-capacity anomaly from four-layer liquid-crystal films.
TL;DR: Developpement d'un calorimetre a haute sensibilite pour l'analyse des variations en fonction de la temperature de la capacite calorifique de couches autoportees de cristaux liquides.
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A New Theory of the Equilibrium Properties of Nematic Liquid Crystals
TL;DR: In this paper, a new theory of nematics applicable to dense systems of rodlike particles is presented, which avoids the use of a lattice, steric effects involved in the dense packing of mesogenic molecules being treated in a manner consistent with this advance.
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Chain orientational order and the re-entrant nematic phase
TL;DR: In this paper, the orientational order in a binary mixture of 4n-hexyloxy- and 4n octyloxoxy-4n-cyanobiphenyl which exhibits a reentrant nematic phase has been studied using deuterium NMR spectroscopy.