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Volume 144, 2010
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Mesoscopic modelling of colloids in chiral nematics

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Abstract

We present numerical modelling of colloidal particles in chiral nematics with cubic symmetry (blue phases) within the framework of the Landau-de Gennes free energy. The interaction potential of a single, nano-sized colloidal particle with a −1/2 disclination line is calculated as a generic trapping mechanism for particles within the cholesteric blue phases. The interaction potential is shown to be highly anisotropic and have threefold rotational symmetry. We discuss the equilibration of the colloidal texture with respect to particle positions and the unit cell size of the blue phase. We also describe how preservation of the liquid crystal volume and the number of particles allows blue phase colloidal structures with different unit cell sizes and configurations to be compared numerically.

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Publication details

The article was received on 01 May 2009, accepted on 18 May 2009 and first published on 24 Aug 2009


Article type: Paper
DOI: 10.1039/B908676E
Citation: Faraday Discuss., 2010,144, 159-169
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    Mesoscopic modelling of colloids in chiral nematics

    M. Ravnik, G. P. Alexander, J. M. Yeomans and S. Zumer, Faraday Discuss., 2010, 144, 159
    DOI: 10.1039/B908676E

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