Quasicrystalline order in self-assembled binary nanoparticle superlattices

Dmitri V. Talapin (), Elena V. Shevchenko (), Maryna I. Bodnarchuk, Xingchen Ye, Jun Chen and Christopher B. Murray
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Dmitri V. Talapin: The University of Chicago, Chicago, Illinois 60637, USA
Elena V. Shevchenko: Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA
Maryna I. Bodnarchuk: The University of Chicago, Chicago, Illinois 60637, USA
Xingchen Ye: Department of Chemistry,
Jun Chen: University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
Christopher B. Murray: Department of Chemistry,

Nature, 2009, vol. 461, issue 7266, 964-967

Abstract: Well-connected quasicrystals Quasicrystals are unique materials combining long-range order with 'impossible' packing symmetries like fivefold rotation, forbidden in periodic structures. Until now, they have been found only in specific systems such as intermetallic compounds, block copolymers, or colloidal particles under the action of a laser standing-wave pattern. Now Talapin et al. have self-assembled colloidal nanoparticles into aperiodic quasicrystalline lattices by carefully tailoring their sizes and using a novel packing motif. They can obtain quasicrystals with nanoparticles made of several different combinations of materials, pointing to the fact that only sphere packing and simple inter-particle potentials are important for their formation, and not specific interactions between the components These quasicrystals can also connect to the ordinary (crystalline) world through a thin 'wetting' layer with structures resembling the classic Archimedean tiling pattern.

Date: 2009
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DOI: 10.1038/nature08439

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