Image:NISTvoltChip.jpg

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[edit] Summary

Superconducting 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 fin-guide on the left.

From nvl.nist.gov/pub/nistpubs/sp958-lide/315-318.pdf Figure 1

--agr 13:10, 11 September 2005 (UTC)

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