| Zugriffsnummer | 45487 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | A fully digital bridge towards the realization of the farad from the quantum Hall effect |
| Autor(in); Institution |
Marzano, Martina; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Ortolano, Massimo; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY; Politecnico di Torino, Dipartimento di Fisica, Torino, ITALY
D'Elia, Vincenzo; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Müller, André; 2.1, Gleichstrom und Niederfrequenz, PTB-Braunschweig
Callegaro, Luca; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
|
| Quelle/Jahr | Metrologia: 58 (2020), 1, 1 - 10 |
| Artikelnummer | 015002 |
| ISSN | 0026-1394 (PRINT) ; 1681-7575 (ONLINE) |
| DOI | |
| Verlag | Bristol: IOP Publishing |
| Freie Schlagworte | digital impedance bridges ; impedance metrology ; quantum hall effect |
| Zusammenfassung | This paper presents the implementation of an electronic fully-digital impedance bridge optimized for RC comparisons with equal impedance magnitudes, together with an evaluation of the uncertainty. This bridge has been designed with the goal of realizing the farad directly from the quantum Hall effect with a bridge uncertainty component at the 10-7 level. Thanks to its simple design, ease of operation and affordability, this bridge is suitable to be industrially manufactured. Together with the increasing availability of graphene quantum Hall resistance standards, this can provide an affordable quantum realization of the unit farad for metrology institutes and calibration centres. In this paper we present the uncertainty budget of an example measurement and the results of the validation of the bridge against a suitably modified version of the traceability chain of the Italian national standard of capacitance. The combined uncertainty of the bridge resulted from repeated measurements (overall measurement time of about 200 min) is 9.2 × 10-8, suitable for the primary realization of the unit of capacitance from a quantized Hall resistance standard. The crosstalk among the channels of the electrical generator is the most significant uncertainty component, possibly reducible with internal shielding and filtering of the electronic generator. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
| Forschungsprojekt | 18SIB07: GIQS: Graphene impedance quantum standard |
| Förderinformationen (1) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: EMPIR 2018 SI Broader Scope Titel der Förderung: 18SIB07: GIQS: Graphene impedance quantum standard Förderungsnummer: 18SIB07 |