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Issue 25, 2014
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Locally stable diamond colloidal crystal formed in a cholesteric liquid crystal

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Abstract

We use a Landau de Gennes free energy approach to model a diamond colloidal crystal immersed in a cholesteric liquid crystal. The pitch in our cholesteric is chosen in order to give rise to the most energetically favourable colloid-defect structure, commensurate with the diamond lattice. This structure corresponds to defect lines travelling along symmetry axes in the diamond crystal. By adding noise to the liquid crystal phase we are able to measure the phonon spectrum of our colloidal crystal, which we find to be consistent with a locally stable configuration. Therefore, although it may not correspond to the global minimum energy structure, once formed our diamond lattice should be stable against thermal fluctuations.

Graphical abstract: Locally stable diamond colloidal crystal formed in a cholesteric liquid crystal

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Publication details

The article was received on 08 Jan 2014, accepted on 17 Mar 2014 and first published on 17 Mar 2014


Article type: Paper
DOI: 10.1039/C4SM00046C
Citation: Soft Matter, 2014,10, 4430-4435
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    Locally stable diamond colloidal crystal formed in a cholesteric liquid crystal

    F. E. Mackay and C. Denniston, Soft Matter, 2014, 10, 4430
    DOI: 10.1039/C4SM00046C

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