Highest-performance superconducting wire segment
In a study published in Nature Communications, Buffalo Uni-led researchers report that they have fabricated the world’s highest-performing HTS wire segment while making the price-performance metric significantly more favorable
Based on rare-earth barium copper oxide (REBCO), their wires achieved the highest critical current density and pinning force—the amount of electrical current carried and ability to pin down magnetic vortices, respectively—reported to date for all magnetic fields and temperatures from 5 kelvin to 77 kelvin.
This temperature range is still extremely cold—minus 451 degrees to minus 321 degrees Fahrenheit—but higher than the absolute zero at which traditional superconductors function.
“These results will help guide industry toward further optimizing their deposition and fabrication conditions to significantly improve the price-performance metric in commercial coated conductors,” says the study’s corresponding author, Amit Goyal, Ph.D., SUNY Distinguished Professor and SUNY Empire Innovation Professor in the Department of Chemical and Biological Engineering, within the UB School of Engineering and Applied Sciences. “Making the price-performance metric more favorable is needed to fully realize the numerous large-scale, envisioned applications of superconductors.”
Applications of HTS wires include energy generation, such as doubling power generated from offshore wind generators; grid-scale superconducting magnetic energy-storage systems; energy transmission, such as lossless transmission of power in high current DC and AC transmission lines; and energy efficiency in the form of highly efficient superconducting transformers, motors and fault-current limiters for the grid.
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