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Many Body Effects and Icosahedral Order in Superlattice Self-Assembly

TitleMany Body Effects and Icosahedral Order in Superlattice Self-Assembly
Publication TypeJournal Article
Year of Publication2018
AuthorsWaltmann, T, Waltmann, C, Horst, N, Trayesset, A
JournalJournal of the American Chemical Society
Volume140
Pagination8236-8245
Date Published07
Type of ArticleArticle
ISBN Number0002-7863
Accession NumberWOS:000438309400029
Keywordsbinary nanoparticle superlattices, chemistry, colloidal nanocrystals, crystal-structures, crystallization, gold nanocrystals, graphics processing units, molecular-dynamics, nanocrystal superlattices, packing
Abstract

= 6. For higher coordination numbers, vortices are expelled and nanocrystals arrange in configurations with tetrahedral or icosahedral order. We provide explicit formulas for the optimal separations between nanocrystals, which correspond to the minima of the free energies. Our results quantitatively explain the structure of superlattice nanocrystals as reported in experiments and reveal how packing arguments, extended to include soft components, predict ordered nanocrystal aggregation.

DOI10.1021/jacs.8b03895
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Alternate JournalJ. Am. Chem. Soc.