English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

New technology, the ultrastable low-noise current amplifier and the electronpump, provide new methods for making traceable measurements of small DCelectric currents. We review four traceability routes for small currentmeasurements and discuss the merits of each one. We present three case studiesof small current calibrations, highlighting the role of noise and driftinginstrument offsets. We show how the Allan deviation is used as a statisticaltool for designing a calibration cycle to correctly eliminate driftinginstrument offsets from calibration data. We also present a simplified noisemodel for a low-current ammeter which predicts a lower limit to the achievablestatistical uncertainty in a calibration.

From Counting Electrons to Calibrating Ammeters: Improved Methodologies for Traceable Measurements of Small Electric Currents