In the realms of electronics, magnetism, and quantum mechanics, superconductivity has an almost mythical status. Some materials, when cooled to a critical temperature, electrical resistance instantly drops to zero and magnetic fields are completely ejected (see video below). Superconducting magnets are already used in MRI machines and particle accelerators like CERN’s LHC, and are being considered for advanced maglev trains. Zero electrical resistance means that a current can flow around a superconducting coil indefinitely (at least 100,000 years) without any applied voltage — a feature that could completely revolutionize power distribution, power storage, electric motors, computers, and more.
The problem is, the hottest superconductor yet discovered still needs to be cooled to around -140 Celsius (133 Kelvin, -220 Fahrenheit) — and cryogenic cooling just isn’t feasible for everyday use. Now, however, some US researchers may have unearthed the secret of room-temperature superconductors: Building your own metamaterial superconductor from scratch.To read more and view the video, click here.