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  • Title: Topological defects in cholesteric liquid crystals induced by monolayer domains with orientational chirality.
    Author: Petit-Garrido N, Trivedi RP, Sagués F, Ignés-Mullol J, Smalyukh II.
    Journal: Soft Matter; 2014 Nov 07; 10(41):8163-70. PubMed ID: 25113825.
    Abstract:
    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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