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Cong Yan, Imad Arfaoui, Nicolas Goubet and Marie-Paule Pileni Soft Supracrystals of Au Nanocrystals with Tunable Mechanical Properties Advanced Functional Materials 23

Article first published online: 9 JAN 2013 | DOI: 10.1002/adfm.201202563

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Three-dimensional colloidal arrays of nanocrystals, called supracrystals, are expected to be robust materials with Young's moduli (E) of several gigapascals. The characterization of soft supracrystal films with E of 100–200 MPa is reported. Two different models are used to determine the Young's modulus and both confirm this result independently. Further studies reveal that the mechanical properties of supracrystals are tuned by the growth mechanism.

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