Binary Superlattices of Nanoparticles: Self-Assembly Leads to “Metamaterials”

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Abstract

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A simple bottom-up approach allows the aggregation of nanoparticles to a variety of superlattices with controlled collective properties. For example, monodisperse magnetic Fe2O3 nanocrystals (blue) and PbSe semiconductor quantum dots (red) form a binary three-dimensional AB13-type superlattice by self-assembly (see picture).

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