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Topological defects in cholesteric liquid crystals induced by monolayer domains with orientational chirality
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Unless stabilized by colloids or confinement with well-defined boundary conditions, defects in liquid crystals remain elusive short-lived objects that tend to disappear with time to minimize the medium's free energy. In this work we use multimodal three-dimensional imaging to visualize cholesteric director structures to show that self-assembled chiral molecular monolayer domains can stabilize topologically constrained defect configurations when in contact with a cholesteric liquid crystal. The cholesteric liquid crystal, having features of both coarse-grained lamellar and nematic liquid crystal with chiral symmetry breaking, allows us to explore the interplay of chirality and implications of layering on the formed defects and director configurations.
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PETIT GARRIDO, Núria, TRIVEDI, Rahul p., SAGUÉS I MESTRE, Francesc, IGNÉS I MULLOL, Jordi, SMALYUKH, I.. Topological defects in cholesteric liquid crystals induced by monolayer domains with orientational chirality. _Soft Matter_. 2014. Vol. 10, núm. 41, pàgs. 8163-8170. [consulta: 20 de gener de 2026]. ISSN: 1744-683X. [Disponible a: https://hdl.handle.net/2445/127825]