Nematic and almost-tetratic phases of colloidal rectangles

Kun Zhao, Christopher Harrison, David Huse, W. B. Russel, P. M. Chaikin

    Research output: Contribution to journalArticle

    Abstract

    Nonspherical colloids can exhibit liquid-crystalline phases with different degrees of broken orientational and translational symmetry. Here we investigate hard rectangles consisting of photolithographically prepared disks standing on edge. We observe a conventional Kosterlitz-Thouless transition from isotropic to nematic with almost smectic behavior at high density. But just on the isotropic side of the isotropic to nematic transition we observe an unusual regime where short-range tetratic correlations dominate over nematic correlations. This occurs due to the proliferation of Ising-like π2 grain boundaries that disrupt nematic order, but preserve tetratic correlations, at lengths shorter than the spacing between free disclinations.

    Original languageEnglish (US)
    Article number040401
    JournalPhysical Review E
    Volume76
    Issue number4
    DOIs
    StatePublished - Oct 11 2007

    Fingerprint

    rectangles
    Rectangle
    Translational symmetry
    colloids
    Colloids
    Grain Boundary
    grain boundaries
    Proliferation
    spacing
    Ising
    Spacing
    symmetry
    Liquid
    liquids
    Range of data

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Condensed Matter Physics
    • Statistical and Nonlinear Physics
    • Mathematical Physics

    Cite this

    Zhao, K., Harrison, C., Huse, D., Russel, W. B., & Chaikin, P. M. (2007). Nematic and almost-tetratic phases of colloidal rectangles. Physical Review E, 76(4), [040401]. https://doi.org/10.1103/PhysRevE.76.040401

    Nematic and almost-tetratic phases of colloidal rectangles. / Zhao, Kun; Harrison, Christopher; Huse, David; Russel, W. B.; Chaikin, P. M.

    In: Physical Review E, Vol. 76, No. 4, 040401, 11.10.2007.

    Research output: Contribution to journalArticle

    Zhao, K, Harrison, C, Huse, D, Russel, WB & Chaikin, PM 2007, 'Nematic and almost-tetratic phases of colloidal rectangles', Physical Review E, vol. 76, no. 4, 040401. https://doi.org/10.1103/PhysRevE.76.040401
    Zhao K, Harrison C, Huse D, Russel WB, Chaikin PM. Nematic and almost-tetratic phases of colloidal rectangles. Physical Review E. 2007 Oct 11;76(4). 040401. https://doi.org/10.1103/PhysRevE.76.040401
    Zhao, Kun ; Harrison, Christopher ; Huse, David ; Russel, W. B. ; Chaikin, P. M. / Nematic and almost-tetratic phases of colloidal rectangles. In: Physical Review E. 2007 ; Vol. 76, No. 4.
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