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Jeong, Joonwoo
Experimental Soft Matter Physics Lab (SOPHY)
Research Interests
  • Liquid crystals, polymers, colloids, emulsions, pattern formation, microfluidics, microfabrication, optical microscopy

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Chiral structures and defects of lyotropic chromonic liquid crystals induced by saddle-splay elasticity

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Title
Chiral structures and defects of lyotropic chromonic liquid crystals induced by saddle-splay elasticity
Author
Davidson, Zoey S.Kang, LouisJeong, JoonwooStill, TimCollings, Peter J.Lubensky, Tom C.Yodh, A. G.
Issue Date
2015-05
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW E, v.91, no.5, pp.1 - 5
Abstract
An experimental and theoretical study of lyotropic chromonic liquid crystals (LCLCs) confined in cylinders with degenerate planar boundary conditions elucidates LCLC director configurations. When the Frank saddle-splay modulus is more than twice the twist modulus, the ground state adopts an inhomogeneous escaped-twisted configuration. Analysis of the configuration yields a large saddle-splay modulus, which violates Ericksen inequalities but not thermodynamic stability. Lastly, we observe point defects between opposite-handed domains, and we explain a preference for point defects over domain walls
URI
https://scholarworks.unist.ac.kr/handle/201301/11683
URL
http://journals.aps.org/pre/abstract/10.1103/PhysRevE.91.050501
DOI
10.1103/PhysRevE.91.050501
ISSN
2470-0045
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PHY_Journal Papers
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