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• W2022780892 abstract "Nematic liquid crystals confined in a cylindrical capillary and subjected to strong homeotropic anchoring conditions is a long-studied fundamental problem that uniquely incorporates nonlinearity, topological stability, defects, and texture physics. The observed and predicted textures that continue to be investigated include escape radial, radial with a line defect, planar polar with two line defects, and periodic array of point defects. This paper presents theory and multiscale simulations of global and fine scale textures of nematic point defects, based on the Landau–de Gennes tensor order parameter equations. The aim of this paper is to further investigate the ringlike nature of point defect cores and its importance on texture transformation mechanisms and stability. The paper shows that the ringlike cores can be oriented either along the cylinder axis or along the radial direction. Axial rings can partially expand but are constrained by the capillary sidewalls. Radial rings can deform into elliptical structures whose major axis is along the capillary axis. The transformation between several families of textures under capillary confinement as well as their stability is discussed in terms of defect ring distortions. A unified view of nematic textures found in the cylindrical cavities is provided." @default.
• W2022780892 created "2016-06-24" @default.
• W2022780892 creator A5008608287 @default.
• W2022780892 creator A5064001999 @default.
• W2022780892 date "2007-03-07" @default.
• W2022780892 modified "2023-09-23" @default.
• W2022780892 title "Ringlike cores of cylindrically confined nematic point defects" @default.
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• W2022780892 doi "https://doi.org/10.1063/1.2711436" @default.
• W2022780892 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/17362127" @default.
• W2022780892 hasPublicationYear "2007" @default.
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