Liquid crystals and anisotropic melts. A general discussion

Bernal, Mario A.; Lawrence,; Oseen,; Zocher, H.; Kast,; Ornstein,; Feachem,; Adam, N. K.; Desch,; Lowry,; Rawlins,; Herrmann, Sven; Foëx,; Malkin,; Porter, Stephen; Stewart,; Stewart, G. W.; Taylor, A. M.; Ostwald,; Carpenter, M. P.; Hartley, G. S.

doi:10.1039/tf9332901060

Cited by 11 publications

(1 citation statement)

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“…13,24,[36][37][38] The elastic energy density is obtained from a model proposed by Oseen, Zocher and Frank. [39][40][41][42][43] In terms of the alignment tensor it is defined by 1,23 where…”

Section: Thermodynamic Modelmentioning

confidence: 99%

Homeotropic nano-particle assembly on degenerate planar nematic interfaces: films and droplets

et al. 2015

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A continuum theory is used to study the effects of homeotropic nano-particles on degenerate planar liquid crystal interfaces. Particle self-assembly mechanisms are obtained from careful examination of particle configurations on a planar film and on a spherical droplet. The free energy functional that describes the system is minimized according to Ginzburg-Landau and stochastic relaxations. The interplay between elastic and surface distortions and the desire to minimize defect volumes (boojums and half-Saturn rings) is shown to be responsible for the formation of intriguing ordered structures. As a general trend, the particles prefer to localize at defects to minimize the overall free energy. However, multiple metastable configurations corresponding to local minima can be easily observed due to the high energy barriers that separate distinct particle arrangements. We also show that by controlling anchoring strength and temperature one can direct liquid-crystal mediated nanoparticle self-assembly along well defined pathways.

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Section: Thermodynamic Modelmentioning

confidence: 99%

Homeotropic nano-particle assembly on degenerate planar nematic interfaces: films and droplets

et al. 2015

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Helical Chirality of Supramolecular Columns and Spheres Self‐Organizes Complex Liquid Crystals, Crystals, and Quasicrystals

Percéc

Xiao

2021

Israel Journal of Chemistry

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Homochiral helical self-organizations provide some of the most fundamental architectures of biological macromolecules and of their co-assemblies although they were first discovered and elucidated only during the early 1950. Helical synthetic covalent macromolecules started to be discovered soon after and were followed by supramolecular macromolecules and their co-assemblies few decades later. This perspective will provide a brief historical development of chiral helical self-organizations in biology and in supramolecular chemistry. Helical covalent and supramolecular macromolecules self-organize and co-organize helical supramolecular columns and spherical helices that can generate complex liquid crystals, crystals including Frank-Kasper phases, and quasicrystals. The design of new functions based on synthetic helical assemblies will also be discussed. Personal events from the life of scientists contributing to these developments are also briefly mentioned.

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