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Identical or fraternal? Palladium–platinum alloy nanocrystals with well-defined twinned structures (see picture) were synthesized by co-reducing Pd and Pt salts. The evolution of twinned morphologies involves coalescence between initially formed small particles under the slow reduction process. Manipulation of the reduction kinetics allows ready control over crystallinity, and thus shape, of the nanocrystals.
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Lim et al. (2009) studied this question.
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