Journal ArticleDOI
Change of thermotropic properties in liquid crystal with multiple phase transitions: Surface “aging” effect
Sevtap Yildiz,Arif Nesrullajev +1 more
TLDR
In this paper, the effect of surface aging on thermotropic properties of polymorphic mesogen, 4-butoxyphenylester of 4-decyloxybenzoic acid (BPEDBA) has been investigated.Abstract:
The effect of surface “aging” on thermotropic properties of polymorphic mesogen, 4-butoxyphenylester of 4-decyloxybenzoic acid (BPEDBA) which exhibits the smectic G, smectic C, smectic A, and nematic mesophases has been investigated. Temperatures of direct and reverse phase transitions and temperature widths of the heterophase regions have been determined with high accuracy. The shift of the phase transition temperatures and change of the temperature widths of the heterophase regions under the influence of surface “aging” have been reported.read more
Citations
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Journal ArticleDOI
Critical behavior of a nonpolar smectogen from high-resolution birefringence measurements.
TL;DR: The isotropic internal field assumption by the Vuks-Chandrasekhar-Madhusudana model is adequate to extract the critical behavior of S(T) from the optical birefringence data, signaling the second-order nature of the N-SmA transition.
Journal ArticleDOI
1,3-Dimethyl-5-(3,4,5-tris(alkoxy)benzoyl) barbituric acid derivatives and their liquid crystalline difluoroboron complexes: Synthesis, characterization and comparative investigations of mesomorphic, thermotropic and thermo-morphologic properties
TL;DR: A series of 1,3-dimethyl-5-(3,4,5-tris(alkoxy)benzoyl) barbituric acid derivatives 1a-4a with various chain length were synthesized by as discussed by the authors.
Journal ArticleDOI
Phase states and thermomorphologic, thermotropic, and magnetomorphologic properties of lyotropic mesophases: sodium lauryl sulphate-water-1-decanol liquid-crystalline system.
TL;DR: In this paper, the phase diagram types, phase boundaries, and sequence of lyotropic mesophases vs temperature have been investigated for different temperature ranges and the dynamics of transformations of magnetically induced textures has been investigated.
Journal ArticleDOI
Oriented and non-oriented textures of nematic liquid crystals: Comparative peculiarities of the thermotropic behavior
Arif Nesrullajev,Nejmettin Avci +1 more
TL;DR: In this paper, the thermotropic behavior of various types of textures in monomorphic nematic liquid crystals has been investigated in detail, and the thermal and linear widths of the heterophase regions for these transitions have been determined with high accuracy.
References
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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.
Sol-gel science
TL;DR: In this article, the authors present and understand the sol-gel processing sequence from beginning to end, including discussions on the chemistry of hydrolysis and condensation of metal-organics and inorganic salts, the growth of polymeric or particulate species in sols, gelation, aging of gels, drying, structure of Gels, and sintering.
MonographDOI
Handbook of liquid crystals
John W. Goodby,Peter J. Collings,Takashi Kato,Carsten Tschierske,Helen F. Gleeson,Peter Raynes +5 more
TL;DR: In this article, the basic principles of both low and high-molecular weight materials, as well as the synthesis, characterization, modification, and applications of all types of liquid crystals are discussed.
Book
Textures of liquid crystals
TL;DR: The Nematic and Cholesteric Phases as mentioned in this paper are the most commonly used phases for surface anchors and Elasticity, and the Hexatic and Hexatic Subphases are the least common ones.