Compact high-temperature superconducting cable wins 'R&D 100' award: "Designed to operate at -196� C (-353� F), the new superconducting cable has a diameter of less than 1 centimeter and is able to carry 2,800 amperes of current—three times as much as thicker, conventional copper or aluminum electrical transmission lines.
The cables are constructed by winding multiple HTS-coated conductors around a multi-strand copper core. The superconducting layers are wound in spirals in alternating directions."
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