Measuring the Electron’s Charge and the Fine-Structure Constant by Counting Electrons on a Capacitor

The charge of the electron can be determined by simply placing a known number of electrons on one electrode of a capacitor and measuring the voltage, V(s), across the capacitor. If V(s) is measured in terms of the Josephson volt and the capacitor is measured in SI units then the fine-structure const...

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Autores principales: Williams, E. R., Ghosh, Ruby N., Martinis, John M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1992
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4914236/
https://www.ncbi.nlm.nih.gov/pubmed/28053434
http://dx.doi.org/10.6028/jres.097.010
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author Williams, E. R.
Ghosh, Ruby N.
Martinis, John M.
author_facet Williams, E. R.
Ghosh, Ruby N.
Martinis, John M.
author_sort Williams, E. R.
collection PubMed
description The charge of the electron can be determined by simply placing a known number of electrons on one electrode of a capacitor and measuring the voltage, V(s), across the capacitor. If V(s) is measured in terms of the Josephson volt and the capacitor is measured in SI units then the fine-structure constant is the quantity determined. Recent developments involving single electron tunneling, SET, have shown bow to count the electrons as well as how to make an electrometer with sufficient sensitivity to measure the charge.
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spelling pubmed-49142362017-01-04 Measuring the Electron’s Charge and the Fine-Structure Constant by Counting Electrons on a Capacitor Williams, E. R. Ghosh, Ruby N. Martinis, John M. J Res Natl Inst Stand Technol Article The charge of the electron can be determined by simply placing a known number of electrons on one electrode of a capacitor and measuring the voltage, V(s), across the capacitor. If V(s) is measured in terms of the Josephson volt and the capacitor is measured in SI units then the fine-structure constant is the quantity determined. Recent developments involving single electron tunneling, SET, have shown bow to count the electrons as well as how to make an electrometer with sufficient sensitivity to measure the charge. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1992 /pmc/articles/PMC4914236/ /pubmed/28053434 http://dx.doi.org/10.6028/jres.097.010 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Williams, E. R.
Ghosh, Ruby N.
Martinis, John M.
Measuring the Electron’s Charge and the Fine-Structure Constant by Counting Electrons on a Capacitor
title Measuring the Electron’s Charge and the Fine-Structure Constant by Counting Electrons on a Capacitor
title_full Measuring the Electron’s Charge and the Fine-Structure Constant by Counting Electrons on a Capacitor
title_fullStr Measuring the Electron’s Charge and the Fine-Structure Constant by Counting Electrons on a Capacitor
title_full_unstemmed Measuring the Electron’s Charge and the Fine-Structure Constant by Counting Electrons on a Capacitor
title_short Measuring the Electron’s Charge and the Fine-Structure Constant by Counting Electrons on a Capacitor
title_sort measuring the electron’s charge and the fine-structure constant by counting electrons on a capacitor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4914236/
https://www.ncbi.nlm.nih.gov/pubmed/28053434
http://dx.doi.org/10.6028/jres.097.010
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