| Title | Direct determination of capacitance standards using a quadrature bridge and a pair of quantized Hall resistors |
| Publication Type | Journal Article |
| Year of Publication | 2003 |
| Authors | Inglis, A.D., Wood B.M., Côté M., Young R.B., and Early M.D. |
| Journal | IEEE Transactions on Instrumentation and Measurement |
| Volume | 52 |
| Issue | 2 |
| Pagination | 559 - 562 |
| Date Published | 2003 |
| ISSN | 00189456 (ISSN) |
| Keywords | Capacitance, Capacitance measurement, Capacitors, Electric measuring bridges, Hall effect, Hall effect devices, Magnetic fields, Quadrature bridge, Quantized Hall resistors, Quantum theory, Resistors, Stability, Standards |
| Abstract | We have used a quadrature bridge to compare directly two quantum Hall resistors with two 10-nF capacitors at 1233 Hz. This approach eliminates uncertainties due to thermal and structural instabilities and to ac/dc differences of the wire resistors normally used in an intermediate step. We have measured the capacitative interaction between the devices, and have developed a shielded header to suppress this effect. The value for the National Research Council primary standard 10-pF capacitor obtained by this method agrees with the expected value to within (0.1 ± 3.5)aF, or (0.01 ± 0.35) × 10-6. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-0037561449&partnerID=40&md5=1119e0d73796aee21b9aae41bb7c5d96 |
| DOI | 10.1109/TIM.2003.810454 |
