Cylindrical nematic liquid crystal shell: effect of saddle-splay elasticity

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Title
Cylindrical nematic liquid crystal shell: effect of saddle-splay elasticity
Author(s)
Arman Javadi; Jonghee Eun; Joonwoo Jeong
Publication Date
2018-11
Journal
SOFT MATTER, v.14, no.44, pp.9005 - 9011
Publisher
ROYAL SOC CHEMISTRY
Abstract
This study introduces cylindrical nematic liquid crystal (LC) shells. Shells as confinement can provide soft matter with intriguing topology and geometry. Indeed, in spherical shells of LCs, rich defect structures have been reported. Avoiding the inherent Plateau–Rayleigh instability of cylindrical liquid–liquid interfaces, we realize the cylindrical nematic LC shell by two different methods: the phase separation in the nematic–isotropic coexistence phase and a cylindrical cavity with a glass rod suspended in the middle. Specifically, the director configurations of lyotropic chromonic LCs (LCLCs) in the cylindrical shell and their energetics are investigated theoretically and experimentally. Unusual elastic properties of LCLCs, i.e., a large saddle-splay modulus, and a shell geometry with both concave and convex curvatures, result in a double-twist director configuration. ©The Royal Society of Chemistry 2018
URI
https://pr.ibs.re.kr/handle/8788114/5048
ISSN
1744-6848
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > Journal Papers (저널논문)
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