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Macroscale refrigeration by nanoscale electron transport

AmandaPisces 添加于 2013/3/29 10:00:46  1244次阅读 | 0次推荐 | 0个评论

We demonstrate a general-purpose solid-state refrigerator for sub-Kelvin temperatures based on the tunneling of hot electrons through normal-metal/insulator/superconductor (NIS) junctions. Previous devices using this cooling principle fell short of general-purpose refrigerators since they could not be coupled to arbitrary payloads. To create a viable refrigerator, we developed optimized NIS structures and techniques to couple multiple such structures to arbitrary objects. Using three linked NIS devices, we reduced the temperature of a 1.9 cm3 copper stage from 290 mK to 256 mK with 700 pW of cooling power at 290 mK. We present plans to achieve base temperatures near 100 mK.

作 者: Peter J. Lowell, Galen C. O'Neil, Jason M. Underwood, and Joel N. Ullom
期刊名称: Applied Physics Letters
期卷页: 26 February 2013 第卷 第期 页
学科领域:数理科学 » 物理学 » 粒子物理学和场论
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原文链接:http://apl.aip.org/resource/1/applab/v102/i8/p082601_s1?isAuthorized=no
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相关报道: http://paper.sciencenet.cn/htmlpaper/201332910451991228548.shtm
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