The ability to grow long-range 2D and 3D organizations of metallic nanocrystals allows the emergence of unexpected physical properties. Here magnetic, structural and mechanical intrinsic properties due to the ordering of cobalt nanocrystals at the mesoscopic scale are discovered. Analogy between nanocrystals ordered in the supra-crystal and atoms in the bulk phase or in a nanocrystal related to the ordering concept is proposed.
Source : Long-range 2D and 3D self-organizations of Co nanocrystals: A new challenge for a new physics. I. Lisiecki, M.P. Pileni C.R.Chimie, 2009,12, 235-246. In honor of P.G.de Gennes