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Nanoscale boost for superwires Since high-temperature superconductors were discovered two decades ago, technologists have dreamed of low-loss electrical transmission lines, levitating trains and super-efficient motors. But applications such as these have been slow to materialize. Now, Amit Goyal and colleagues at the Oak Ridge National Laboratory in the US have introduced nanoscale defects into a "cuprate" superconductor to create short lengths of wire that can carry large currents and work in strong magnetic fields.
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