The wave of excitement caused by LK-99 — the purple crystal that was going to change the world — has now died down after studies showed it wasn’t a superconductor. But a question remains: would a true room-temperature superconductor be revolutionary?
The answer is that it depends — on the application, and on whether the hypothetical material also has other crucial qualities. But at least in some scientific fields, in particular those that use strong magnetic fields, better superconductors would be likely to have a huge impact.
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