Binary nanoparticle superlattices

Electrostatic assembly of binary nanoparticle superlattices using protein cages.
Mauri A. Kostiainen, Panu Hiekkataipale, Ari Laiho, Vincent Lemieux, Jani Seitsonen, Janne Ruokolainen and Pierpaolo Ceci
Nature Nanotechnology 8, 52 (2013)

a, Native CCMV with RNA genome inside. b, Apoferritin and magnetoferritin (recombinant ferritin cage from Pyrococcus furiosus encapsulating Fe₃O₄–γ-Fe₂O₃). c, Gold nanoparticle stabilized with an amphiphilic ligand featuring a cationic quaternary amine end-group. d, Size of the building blocks drawn to scale.