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by eleitl 3993 days ago
The node size do not correspond to a given dimension of a structure anymore, it's computed property, from area of a given standard cell (e.g. SRAM cell).
1 comments

That's informative but doesn't disagree. It's not a 1:1 correspondence but it's a pretty close correlation to the actual widths of things.
silicon is diamond cubic; 0.54 nm corresponds to 8/sqrt(3) radiuses worth. So the diameter of silicon is 0.23nm, and 7nm = ~30 silicon atoms across.