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美国华盛顿特别市的海军技术研究所的研究工作者根据微弱的放射热,研制了一种测定超低温的新型测辐射热计,这种仪器由仅有10个原子层厚度的氮化铌薄膜构成。在2～12K 的超低温条件下,它具有能极迅速地响应十亿分之一秒以下能量脉冲的超导
Researchers at the Institute of Naval Technology of the Special City of Washington in the United States have developed a new bolometer for the determination of ultra-low temperatures based on faint radiant heat. The instrument consists of a niobium nitride thin film with only 10 atomic-layer thicknesses. It has a superconductivity that responds very rapidly to energy pulses in the order of a billionth of a second at cryogenic temperatures of 2 to 12K