The demon particle is found inside the superconductor. What if we cover the metal layer with electrons? The demon particle solves a 67-year-old mystery. The particle is not a particle like a proton or an electron. It's a composite particle made of electrons. And the thing that this demon particle, or "super electron," does is make the electrons in metal act like massless waves. There is a possibility that this massless wave opens the road to room-temperature superconductors. The super electron, or Pine's demon, is massless because it hovers separately from the rest of the material. The problem with this quasiparticle is that it exists at very low temperatures. Pauli's exclusion principle might make it possible to create conditions where that quasiparticle can exist at room temperature. That principle means that there are no two identical fermions in a quantum system. So energy travels from a higher energy level to a lower energy level, and systems can use those e...