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It could potentially allow you to stack 3 infront of eachother to render color instead of needing alternating colored subpixels.

Not sure if that would actually be useful for anything besides a density increase, but it could make color vector displays feasible.

Ooo moo how about a 1 Foot deep stack that can create real 3 dimensional objects.

Probably not gonna have as much luck with the transparency at those thicknesses.

Indeed. However, atomic thick layers can probably be levetated easily (electrostatic or magnetic), and it doesn’t need to be solid to fool our eyes.