Stability of a double twisted structure in spherical cholesteric droplets

Jun Yoshioka, Fumiya Ito, Yuka Tabe

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    12 Citations (Scopus)

    Abstract

    We found for the first time the stabilization of a double twisted structure in cholesteric liquid crystals confined to small spherical droplets under weak anchoring conditions. The direct observation of the droplets using a polarized microscope revealed the physical properties of the structure. The experimental results showed that the stability of the double twisted structure is determined by the relationship between the helical pitch length and the droplet size. We theoretically analyzed the structural stability by the calculation of the Frank elastic free energy including the surface elastic term, and succeeded in explaining the experimental results. In this paper, we concluded that the stability of the double twisted structure is determined by the competition between the surface and the bulk elasticity.

    Original languageEnglish
    Pages (from-to)2400-2407
    Number of pages8
    JournalSoft Matter
    Volume12
    Issue number8
    DOIs
    Publication statusPublished - 2016

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    ASJC Scopus subject areas

    • Chemistry(all)
    • Condensed Matter Physics

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