Nanofactories (video)

Animatie over machines - zoiets als desktop printers - die werken op basis van nano-robots

A nanofactory is a proposed system in which nanomachines (resembling molecular assemblers, or industrial robot arms) would combine reactive molecules via mechanosynthesis to build larger atomically precise parts. These, in turn, would be assembled by positioning mechanisms of assorted sizes to build macroscopic (visible) but still atomically-precise products.
[Molecular assembler - Wikipedia, the free encyclopedia]
via: National Nanotechnology Initiatives - Several Countries are in the Nanotech Race