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Comparing light-induced colloidal quasicrystals with different rotational symmetries

Journal of Physics Condensed Matter, ISSN: 0953-8984, Vol: 24, Issue: 28, Page: 284101
2012
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Quasicrystals are aperiodic structures with long-range orientational order. Unlike crystals, quasicrystals can, in principle, possess any non-crystallographic rotational symmetry. However, only a few of these rotational symmetries have been observed. By using MonteCarlo simulations of colloidal particles in laser interference patterns with quasicrystalline symmetry, we compare the onset of quasicrystalline order for different rotational symmetries in two dimensions. We find that quasicrystals with 5-, 8-, 10-, and 12-fold rotational axes can be induced with lower laser intensities than quasicrystals with other non-crystallographic rotational symmetries. We relate this finding to the number of local symmetry centers in the respective interference patterns. © 2012 IOP Publishing Ltd.

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