45 citations · 137 across the 16 of their papers we have counts for
3 papers · 1 filter
Generation of reference dc currents at 1 nA level with the capacitance-charging method
Luca Callegaro, Pier Paolo Capra, Vincenzo D'Elia +1
The capacitance-charging method is a well-established and handy technique for the generation of dc current in the 100 pA range or lower. The method involves a capacitance standard…
On the synthesis of Quantum Hall Array Resistance Standards
Massimo Ortolano, Marco Abrate, Luca Callegaro
Quantum Hall effect (QHE) is the basis of modern resistance metrology. In Quantum Hall Array Resistance Standards (QHARS), several individual QHE elements, each one having the same…
Bridge connection of quantum Hall elementary devices
Luca Callegaro, Massimo Ortolano
Multiple-series and multiple-parallel connections of quantum Hall elementary devices allow the realization of multiple or fractional values of the quantized Hall resistance, reject…