| Zugriffsnummer | 48736 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | PTB-INRIM comparison of novel digital impedance bridges with graphene impedance quantum standards |
| Autor(in); Institution |
Marzano, Martina; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Yin, Yefei; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Kraus, Marco; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Vincenzo, D'Elia; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Callegaro, Luca; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Ortolano, Massimo; Dipartimento di Elettronica e Telecomunicazioni, Politecnico di Torino, Torino, ITALY
Bauer, Stephan; PSt, Präsidialer Stab, PTB-Braunschweig
|
| Quelle/Jahr | Metrologia: 59 (2022), 6, 1 - 11 |
| Artikelnummer | 065001 |
| ISSN | 0026-1394 (PRINT) ; 1681-7575 (ONLINE) |
| DOI | |
| Verlag | Bristol: IOP Publishing |
| Zusammenfassung | This paper describes an onsite comparison of two different digital impedance bridges when performing measurements on a quantum Hall resistance standard with the purpose of realizing the SI unit of capacitance, the farad. In the EMPIR Joint Research Project 18SIB07 GIQS, graphene impedance quantum standards, the Physikalisch-Technische Bundesanstalt (PTB), Germany, developed a Josephson impedance bridge, and the Istituto Nazionale di Ricerca Metrologica (INRIM) and the Politecnico di Torino (POLITO), Italy, developed an electronic digital impedance bridge, one based on Josephson waveform generators and one based on an electronic waveform synthesizer. The INRIMPOLITO impedance bridge was moved to PTB and the two bridges were compared by measuring both temperature-controlled standards and a graphene AC quantized Hall resistance standard. The uncertainties for the calibration of 10 nF capacitance standards, at 1233 Hz, are within 1 × 10-8 for the PTB's bridge and around 1 × 10-7 for the INRIM-POLITO’s bridge. The comparison mutually validates the two bridges within the combined uncertainty. The result confirms that digital impedance bridges allow the realization of the SI farad from the quantized Hall resistance with uncertainties comparable with the best calibration capabilities of the BIPM and the most important National Metrology Institutes. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
| Forschungsprojekt | EMPIR 18SIB07 GIQS - Graphene Impedance Quantum Standard |
Zitierung
Marzano, M., Yaowaret, P., Kruskopf, M., Yin, Y., Kraus, M., Vincenzo, D., Callegaro, L., Ortolano, M., Bauer, S., & Behr, R. (2022). PTB-INRIM comparison of novel digital impedance bridges with graphene impedance quantum standards. Metrologia, 59(6), 1–11. https://doi.org/10.1088/1681-7575/ac9187