Graphene is a carbon sheet just one atom thick, a fantastic conductor. But its surface is crinkly, like a wrinkled tablecloth that hasn't been ironed. Scientists built a 'sandwich': two of these sheets pressed together with a non-conductive spacer in between. They iron out each other's folds, like two halves of a sandwich making the surface perfectly even. Inside this atomically flat sandwich, electrons glide without a hitch.

But the real magic: in this ultrapure structure, electrons start to 'divide'. Their collective behavior creates particles with just one-third of the usual charge. It's not a trick: it's a key to the deep nature of matter and a step toward tomorrow's electronics.