Graphene impedance quantum standard
Establishing SI linked quantum traceability by exploiting the potential of graphene
The marketability of electronic products relies on quantifications of voltage, resistance, and impedance. While the major metrology institutes offer ‘gold standard’ traceability for voltage and resistance, by applying Josephson (JE) and quantum Hall effects (QHE), calibrating impedance traceable to the QHE is costly. Cheaper routes to traceability for impedance quantities (ohm, farad, and henry), linked to the defining constants of the revised SI units, would boost supply chains by enabling affordable, traceable measurement services, by a broader range of providers.
The project established a new primary standard for impedance, linked to the revised SI Units, by exploiting quantum effects of graphene. Novel digital impedance measurement bridges combined with a simpler cooling method will result in a graphene-based quantum Hall resistance device. This will enable a cheaper and easier-to-operate primary standard, and more affordable and improved measurement services. The project also helped link other electrical units to the revised SI units, while new devices will become possible in the technology sector, for faster, more sensitive measurement methods.
ACS Applied Electronic Materials
Measurement Science and Technology
Measurement Science and Technology
Advanced Physics Research
Metrologia
IEEE Transactions on Electron Devices
ACTA IMEKO
Measurement Science and Technology
Advanced Functional Materials
Participating EURAMET NMIs and DIs
CMI (Czechia)
INRiM (Italy)
LNE (France)
METAS (Switzerland)
MIKES (Finland)
PTB (Germany)
RISE (Sweden)
Other Participants
Centre National de la Recherche Scientifique (France)
Korea Research Institute of Standards and Science (Korea, Republic of)
National Institute of Metrology Thailand (Thailand)
Politecnico di Torino (Italy)
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