Scientists from China have developed a new cooling technology based on a rare-earth alloy that can reach temperatures close to absolute zero without relying on helium-3, reports South China Morning Post. Such an alloy could enable compact, helium-3-free cooling systems for superconducting quantum chips, advanced electronics used by military equipment, and space applications.
The team built a compact, solid-state refrigeration module with no moving parts that reached 106 millikelvin (mK), which is…

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