I have a more fundamental question. What does 8nm measures exactly? I'm not an expert in those devices. But I do know that 8nm is probably below De Broglie's wavelength, which means that a transistor's channel of this dimension would have some serious tunneling current leaks, thus offsetting any benefit in going below; yet people talk about 5nm, 3nm... That's like, 10 atomic monolayers. At these dimensions, the properties of materials can start to significantly diverge from their bulk values (though not really for Si).
So, what do they measure exactly with these nm?
It's just marketing at this point apparently. I guess maybe they're claiming that it's the lowest feature size or something, rather than just transistor size?
I'm curious where they're gonna go from here on the marketing side. Picometers? Angstroms?