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Visualising the strain distribution in suspended two-dimensional materials under local deformation

We demonstrate the use of combined simultaneous atomic force microscopy (AFM) and laterally resolved Raman spectroscopy to study the strain distribution around highly localised deformations in suspended two-dimensional materials. Using the AFM tip as a nanoindentation probe, we induce localised stra...

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Detalles Bibliográficos
Autores principales: Elibol, Kenan, Bayer, Bernhard C., Hummel, Stefan, Kotakoski, Jani, Argentero, Giacomo, Meyer, Jannik C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4921963/
https://www.ncbi.nlm.nih.gov/pubmed/27346485
http://dx.doi.org/10.1038/srep28485
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author Elibol, Kenan
Bayer, Bernhard C.
Hummel, Stefan
Kotakoski, Jani
Argentero, Giacomo
Meyer, Jannik C.
author_facet Elibol, Kenan
Bayer, Bernhard C.
Hummel, Stefan
Kotakoski, Jani
Argentero, Giacomo
Meyer, Jannik C.
author_sort Elibol, Kenan
collection PubMed
description We demonstrate the use of combined simultaneous atomic force microscopy (AFM) and laterally resolved Raman spectroscopy to study the strain distribution around highly localised deformations in suspended two-dimensional materials. Using the AFM tip as a nanoindentation probe, we induce localised strain in suspended few-layer graphene, which we adopt as a two-dimensional membrane model system. Concurrently, we visualise the strain distribution under and around the AFM tip in situ using hyperspectral Raman mapping via the strain-dependent frequency shifts of the few-layer graphene’s G and 2D Raman bands. Thereby we show how the contact of the nm-sized scanning probe tip results in a two-dimensional strain field with μm dimensions in the suspended membrane. Our combined AFM/Raman approach thus adds to the critically required instrumental toolbox towards nanoscale strain engineering of two-dimensional materials.
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spelling pubmed-49219632016-06-28 Visualising the strain distribution in suspended two-dimensional materials under local deformation Elibol, Kenan Bayer, Bernhard C. Hummel, Stefan Kotakoski, Jani Argentero, Giacomo Meyer, Jannik C. Sci Rep Article We demonstrate the use of combined simultaneous atomic force microscopy (AFM) and laterally resolved Raman spectroscopy to study the strain distribution around highly localised deformations in suspended two-dimensional materials. Using the AFM tip as a nanoindentation probe, we induce localised strain in suspended few-layer graphene, which we adopt as a two-dimensional membrane model system. Concurrently, we visualise the strain distribution under and around the AFM tip in situ using hyperspectral Raman mapping via the strain-dependent frequency shifts of the few-layer graphene’s G and 2D Raman bands. Thereby we show how the contact of the nm-sized scanning probe tip results in a two-dimensional strain field with μm dimensions in the suspended membrane. Our combined AFM/Raman approach thus adds to the critically required instrumental toolbox towards nanoscale strain engineering of two-dimensional materials. Nature Publishing Group 2016-06-27 /pmc/articles/PMC4921963/ /pubmed/27346485 http://dx.doi.org/10.1038/srep28485 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Elibol, Kenan
Bayer, Bernhard C.
Hummel, Stefan
Kotakoski, Jani
Argentero, Giacomo
Meyer, Jannik C.
Visualising the strain distribution in suspended two-dimensional materials under local deformation
title Visualising the strain distribution in suspended two-dimensional materials under local deformation
title_full Visualising the strain distribution in suspended two-dimensional materials under local deformation
title_fullStr Visualising the strain distribution in suspended two-dimensional materials under local deformation
title_full_unstemmed Visualising the strain distribution in suspended two-dimensional materials under local deformation
title_short Visualising the strain distribution in suspended two-dimensional materials under local deformation
title_sort visualising the strain distribution in suspended two-dimensional materials under local deformation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4921963/
https://www.ncbi.nlm.nih.gov/pubmed/27346485
http://dx.doi.org/10.1038/srep28485
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