Mechanical behavior of supercrystalline nanocomposites

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Nacre is an interesting model material for bioinspired materials thanks to its special “brick-and-mortar” structure and ceramic-organic composition. To mimic nacre’s unique combination of strength and toughness, a bottom-up approach has been implemented, starting from the nanoscale of the functionalized nanoparticles (NPs). The supercrystalline (SC) domains obtained in the first hierarchy which consist of tightly packed NPs were used as the building blocks of the second hierarchy. To gain information about the constitutive behavior of the first hierarchy, mechanical characterization was conducted at this level. SC bulk 3D pellets were characterized mechanically with techniques range from nanoindentation to micro-bending, -compression, and fracture toughness.

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