Fig. 6

Tree structure using the hierarchy and interface operators. Left: a gold-coated silicon nanoparticle. Right: An abstract nanomaterial with some components “A”–”E”. Component “C” is connected through some “bond-a” to component “D”, etc. The percentages 30%, 70% make specific sense in specific contexts; e.g. a mixture with 30% of “B” and 70% of the structure “C–D–E”