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VOLUME 43 (1986) | ISSUE 11 | PAGE 523
Icosahedral ordering in cholesteric liquid crystals
The blue phases of cholesteric liquid crystals are analyzed in the Landau theory. A region in which a phase with icosahedral symmetry has the lowest energy is found on the phase diagram. The relative intensities of the Bragg reflections are calculated for the scattering of light by an icosahedral structure. The fog phase observed experimentally may correspond to an icosahedral ordering.