Nanoparticle (NP) synthesis and engineering techniques have progressed significantly during the last thirty years , serving a wide range of applications that includes nanofluidics and biomedicine , electronic devices , and catalysis . In every field, it is crucial to control the extent of NP selfassembly , both during the synthesis stage and in the target application environment . The interaction forces that drive NP self-assembly can originate from geometric, electric, or magnetic properties of the NP core . For instance, the shape of the NPs is a feature that can be used to obtain assemblies with specific structures . In the simplest case, the shape determines the packing geometry of a NP cluster, which can help drive the formation of specific materials, in particular 2D or 3D superlattices .