Director-configurational transitions around microbubbles of hydrostatically regulated size in liquid crystals

C. Völtz, Y. Maeda, Yuka Tabe, H. Yokoyama

    Research output: Contribution to journalArticle

    29 Citations (Scopus)

    Abstract

    A high-pressure technique is introduced which allows a continuous variation of the inclusion size in liquid crystal colloids. We use a nematic liquid crystal host into which micrometer-sized gas bubbles are injected. By applying hydrostatic pressures, the diameter of these gas bubbles can be continuously decreased via compression and absorption of gas into the host liquid crystal, so that the director configurations around a single bubble can be investigated as a function of the bubble size. The theoretically predicted transition from a hyperbolic hedgehog to a Saturn-ring configuration, on reduction of the particle size below a certain threshold, is confirmed to occur at the radius of a few micrometers.

    Original languageEnglish
    Article number227801
    JournalPhysical Review Letters
    Volume97
    Issue number22
    DOIs
    Publication statusPublished - 2006

    Fingerprint

    bubbles
    liquid crystals
    micrometers
    gases
    Saturn rings
    configurations
    hydrostatic pressure
    colloids
    inclusions
    radii
    thresholds

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Director-configurational transitions around microbubbles of hydrostatically regulated size in liquid crystals. / Völtz, C.; Maeda, Y.; Tabe, Yuka; Yokoyama, H.

    In: Physical Review Letters, Vol. 97, No. 22, 227801, 2006.

    Research output: Contribution to journalArticle

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