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Modifying the electrical properties of graphene by reversible point-ripple formation

Mona M.M. Alyobi, Chris J. Barnett, Paul Rees Orcid Logo, Richard Cobley Orcid Logo

Carbon, Volume: 143, Pages: 762 - 768

Swansea University Authors: Paul Rees Orcid Logo, Richard Cobley Orcid Logo

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DOI (Published version): 10.1016/j.carbon.2018.11.076

Abstract

Strain, ripples and wrinkles in graphene reduce the charge-carrier mobility and alter the electronic behaviour. In few-layer graphene the anisotropy between the in-plane and cross-plane resistivity is altered and a band gap can be opened up. Here we demonstrate a method to reversibly induce point ri...

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Published in: Carbon
ISSN: 0008-6223
Published: Elsevier BV 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa46153
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first_indexed 2018-11-28T20:20:02Z
last_indexed 2023-02-15T03:55:34Z
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spelling 2023-02-14T16:23:41.0301499 v2 46153 2018-11-28 Modifying the electrical properties of graphene by reversible point-ripple formation 537a2fe031a796a3bde99679ee8c24f5 0000-0002-7715-6914 Paul Rees Paul Rees true false 2ce7e1dd9006164425415a35fa452494 0000-0003-4833-8492 Richard Cobley Richard Cobley true false 2018-11-28 MEDE Strain, ripples and wrinkles in graphene reduce the charge-carrier mobility and alter the electronic behaviour. In few-layer graphene the anisotropy between the in-plane and cross-plane resistivity is altered and a band gap can be opened up. Here we demonstrate a method to reversibly induce point ripples in electrically isolated few-layer graphene with the ability to select the number of layers used for transport measurement down to single layer. During ripple formation the in-plane and cross-plane sheet resistances increase by up to 78% and 699% respectively, confirming that microscopic corrugation changes can solely account for graphene's non-ideal charge-carrier mobility. The method can also count the number of layers in few-layer graphene and is complimentary to Raman spectroscopy and atomic force microscopy when n ≤ 4. Understanding these changes is crucial to realising practical oscillators, nano-electromechanical systems and flexible electronics with graphene. Journal Article Carbon 143 762 768 Elsevier BV 0008-6223 1 3 2019 2019-03-01 10.1016/j.carbon.2018.11.076 COLLEGE NANME Biomedical Engineering COLLEGE CODE MEDE Swansea University UKRI, EP/NO13506/1 UKRI, grant number EP/N013506/1 2023-02-14T16:23:41.0301499 2018-11-28T15:51:09.8437248 Faculty of Science and Engineering School of Engineering and Applied Sciences - Biomedical Engineering Mona M.M. Alyobi 1 Chris J. Barnett 2 Paul Rees 0000-0002-7715-6914 3 Richard Cobley 0000-0003-4833-8492 4 0046153-07122018160811.pdf 46153_APCE037.pdf 2018-12-07T16:08:11.1970000 Output 1129251 application/pdf Version of Record true 2018-12-07T00:00:00.0000000 Distributed under the terms of a Creative Commons CC-BY 4.0 Licence. true eng https://creativecommons.org/licenses/by/4.0/
title Modifying the electrical properties of graphene by reversible point-ripple formation
spellingShingle Modifying the electrical properties of graphene by reversible point-ripple formation
Paul Rees
Richard Cobley
title_short Modifying the electrical properties of graphene by reversible point-ripple formation
title_full Modifying the electrical properties of graphene by reversible point-ripple formation
title_fullStr Modifying the electrical properties of graphene by reversible point-ripple formation
title_full_unstemmed Modifying the electrical properties of graphene by reversible point-ripple formation
title_sort Modifying the electrical properties of graphene by reversible point-ripple formation
author_id_str_mv 537a2fe031a796a3bde99679ee8c24f5
2ce7e1dd9006164425415a35fa452494
author_id_fullname_str_mv 537a2fe031a796a3bde99679ee8c24f5_***_Paul Rees
2ce7e1dd9006164425415a35fa452494_***_Richard Cobley
author Paul Rees
Richard Cobley
author2 Mona M.M. Alyobi
Chris J. Barnett
Paul Rees
Richard Cobley
format Journal article
container_title Carbon
container_volume 143
container_start_page 762
publishDate 2019
institution Swansea University
issn 0008-6223
doi_str_mv 10.1016/j.carbon.2018.11.076
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Biomedical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Biomedical Engineering
document_store_str 1
active_str 0
description Strain, ripples and wrinkles in graphene reduce the charge-carrier mobility and alter the electronic behaviour. In few-layer graphene the anisotropy between the in-plane and cross-plane resistivity is altered and a band gap can be opened up. Here we demonstrate a method to reversibly induce point ripples in electrically isolated few-layer graphene with the ability to select the number of layers used for transport measurement down to single layer. During ripple formation the in-plane and cross-plane sheet resistances increase by up to 78% and 699% respectively, confirming that microscopic corrugation changes can solely account for graphene's non-ideal charge-carrier mobility. The method can also count the number of layers in few-layer graphene and is complimentary to Raman spectroscopy and atomic force microscopy when n ≤ 4. Understanding these changes is crucial to realising practical oscillators, nano-electromechanical systems and flexible electronics with graphene.
published_date 2019-03-01T03:57:54Z
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score 11.01628

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