“…For example, nonlinear inorganic and hybrid assemblies can have unique magnetic, electronic and optical capacities including sensor operation after functionalization (Chu, Hu, Yang, Wang, & Zhang, ; Guerrero‐Martínez, Barbosa, Pastoriza‐Santos, & Liz‐Marzán, ; Li et al, ; Oehler et al, ; Pallavicini, Cabrini, & Borzenkov, ; Risveden et al, ), virostatic effects (Mishra et al, ), or swimming behaviour if powered for example, by magnetic forces or enzymatically (Bachmann, Bente, Codutti, & Faivre, ; Patiño, Arqué, Mestre, Palacios, & Sánchez, ; B. Xu, Zhang, Wang, Huang, & Mei, ). Branched “nanotrees” and expanded nanostructures are applied in hierarchically organized porous, high surface‐area 3D materials such as foams and micro‐mesh matrices for hydrogen storage, photocatalysis and in electronic devices (Cansizoglu, Badradeen, & Karabacak, ; Chang et al, ). Complex capacities of biomolecules such as enzyme catalysis, biological recognition and nanoactuation, however, are still awaiting appropriate 3D carriers for being efficiently used on and in miniaturized tools and “intelligent” materials—a primary objective of structural synthetic biology, as outlined above.…”