File:NISTvoltChip.jpg

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Summario

Description
English: One-volt en:voltage standard developed by en:NIST (formerly en:National Bureau of Standards (NBS) until 1988) based on an array of 3020 superconducting en:Josephson junctions, operating at liquid-helium temperatures. Microwave energy fed into the finguide structure on the left generates a voltage across the 4 chains of junctions on the right.
Data apparently 1985-1988
Origine NIST paper A Practical Josephson Voltage Standard at One Volt, Figure 1
Autor NBS

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Public domain
This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.

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Voltage standard based on Josephson junctions

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Data/HoraMiniaturaDimensionesUsatorCommento
actual11:22, 31 martio 2017Miniatura pro le version de 11:22, 31 martio 20171 421 × 878 (207 KB)Materialscientistcontrast
06:20, 16 julio 2009Miniatura pro le version de 06:20, 16 julio 20091 421 × 878 (86 KB)RNLionHigher-resolution view from same NIST source paper to show greater detail.
13:10, 11 septembre 2005Miniatura pro le version de 13:10, 11 septembre 2005472 × 293 (123 KB)ArnoldReinholdSuperconduction chip used by w:NIST to define the w:volt. The chip contains an array of 3020 w:Josephson junctions and operates at liquid w:Helium temperatures. Microwave energy is fed to the junctions through the finguide on the left. Fr

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