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The dielectric constant of a bilayer graphene interface

The interlayer relative dielectric constant, ε(r), of 2-dimensional (2D) materials in general and graphitic materials in particular is one of their most important physical properties, especially for electronic applications. In this work, we study the electromechanical actuation of nano-scale graphit...

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Detalles Bibliográficos
Autores principales: Bessler, Ron, Duerig, Urs, Koren, Elad
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9417051/
https://www.ncbi.nlm.nih.gov/pubmed/36134207
http://dx.doi.org/10.1039/c8na00350e
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author Bessler, Ron
Duerig, Urs
Koren, Elad
author_facet Bessler, Ron
Duerig, Urs
Koren, Elad
author_sort Bessler, Ron
collection PubMed
description The interlayer relative dielectric constant, ε(r), of 2-dimensional (2D) materials in general and graphitic materials in particular is one of their most important physical properties, especially for electronic applications. In this work, we study the electromechanical actuation of nano-scale graphitic contacts. We find that beside the adhesive forces there are capacitive forces that scale parabolically with the potential drop across the sheared interface. We use this phenomena to measure the intrinsic dielectric constant of the bilayer graphene interface i.e. ε(r) = 6 ± 2, which is in perfect agreement with recent theoretical predictions for multi-layer graphene structures. Our method can be generally used to extract the dielectric properties of 2D materials systems and interfaces and our results pave the way for utilizing graphitic and other 2D materials in electromechanical based applications.
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spelling pubmed-94170512022-09-20 The dielectric constant of a bilayer graphene interface Bessler, Ron Duerig, Urs Koren, Elad Nanoscale Adv Chemistry The interlayer relative dielectric constant, ε(r), of 2-dimensional (2D) materials in general and graphitic materials in particular is one of their most important physical properties, especially for electronic applications. In this work, we study the electromechanical actuation of nano-scale graphitic contacts. We find that beside the adhesive forces there are capacitive forces that scale parabolically with the potential drop across the sheared interface. We use this phenomena to measure the intrinsic dielectric constant of the bilayer graphene interface i.e. ε(r) = 6 ± 2, which is in perfect agreement with recent theoretical predictions for multi-layer graphene structures. Our method can be generally used to extract the dielectric properties of 2D materials systems and interfaces and our results pave the way for utilizing graphitic and other 2D materials in electromechanical based applications. RSC 2019-03-07 /pmc/articles/PMC9417051/ /pubmed/36134207 http://dx.doi.org/10.1039/c8na00350e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Bessler, Ron
Duerig, Urs
Koren, Elad
The dielectric constant of a bilayer graphene interface
title The dielectric constant of a bilayer graphene interface
title_full The dielectric constant of a bilayer graphene interface
title_fullStr The dielectric constant of a bilayer graphene interface
title_full_unstemmed The dielectric constant of a bilayer graphene interface
title_short The dielectric constant of a bilayer graphene interface
title_sort dielectric constant of a bilayer graphene interface
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9417051/
https://www.ncbi.nlm.nih.gov/pubmed/36134207
http://dx.doi.org/10.1039/c8na00350e
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