In 2018, scientists discovered that when an ultrathin layer of carbon, called graphene, is stacked and twisted to a "magic angle" on top of another layer of graphene, the double-layered structure converts into a superconductor, allowing electricity to flow without resistance or energy waste. Now, scientists at Harvard University have expanded on that superconducting system by adding a third layer and rotating it. The work could lead to superconductors that operate at higher or even close to room temperature, unlike most superconductors today (including the double layered graphene structure), which work only at ultracold temperatures.
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