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Original photo of oscilloscope traces (double exposure)
    
  1995--In an advance toward programmable standards, NIST demonstrated the first quantized voltage steps in an array of Josephson junctions with barriers made of normal metal instead of an insulator. The circuit contains 400 junctions, 1.7 micrometers by 1.7 micrometers in size, made of niobium electrodes and gold-palladium alloy barriers.

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March 30, 2011

Reference Number
                                11PML026

Credit
                                Benz/NIST

Image Type
                    Photo, B&W HEADQUARTERS
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