World's Smallest Wedding Rings...
Goethe University chemistry professor Alexander He... ...two links in a chain. Such a structure is called catenan , a term derived from the Latin word catena (chain... ...of DNA nanotechnology, since the two rings of the catenan are, as opposed to the majority of the DNA nano-a...
https://www.neatorama.com/2011/04/12/worlds-smallest-wedding-rings/
