It is a solid, and your description isn’t really accurate. It’s not the semiconductor that is being imaged. The semiconductors are being used to generate a con

It is a solid, and your description isn’t really accurate. It’s not the semiconductor that is being imaged. The semiconductors are being used to generate a contained cloud of electrons, basically a gas of electrons between the semiconductors. That gas is then cooled until it crystallizes. So what you are seeing is a layer of crystallized electrons. > It is not a "solid" that is only composed of electrons, with no atomic nuclei present. That is indeed what it is. https://en.m.wikipedia.org/wiki/Wigner_crystal https://en.m.wikipedia.org/wiki/Wigner_crystal From Wikipedia: “ A Wigner crystal is the solid (crystalline) phase of electrons first predicted by Eugene Wigner in 1934. A gas of electrons moving in 2D or 3D in a uniform, inert, neutralizing background will crystallize and form a lattice if the electron density is less than a critical value.”