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Buckling Behavior of Substrate Supported Graphene Sheets
The buckling of graphene sheets on substrates can significantly degrade their performance in materials and devices. Therefore, a systematic investigation on the buckling behavior of monolayer graphene sheet/substrate systems is carried out in this paper by both molecular mechanics simulations and th...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456546/ https://www.ncbi.nlm.nih.gov/pubmed/28787831 http://dx.doi.org/10.3390/ma9010032 |
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author | Yang, Kuijian Chen, Yuli Pan, Fei Wang, Shengtao Ma, Yong Liu, Qijun |
author_facet | Yang, Kuijian Chen, Yuli Pan, Fei Wang, Shengtao Ma, Yong Liu, Qijun |
author_sort | Yang, Kuijian |
collection | PubMed |
description | The buckling of graphene sheets on substrates can significantly degrade their performance in materials and devices. Therefore, a systematic investigation on the buckling behavior of monolayer graphene sheet/substrate systems is carried out in this paper by both molecular mechanics simulations and theoretical analysis. From 70 simulation cases of simple-supported graphene sheets with different sizes under uniaxial compression, two different buckling modes are investigated and revealed to be dominated by the graphene size. Especially, for graphene sheets with length larger than 3 nm and width larger than 1.1 nm, the buckling mode depends only on the length/width ratio. Besides, it is revealed that the existence of graphene substrate can increase the critical buckling stress and strain to 4.39 N/m and 1.58%, respectively, which are about 10 times those for free-standing graphene sheets. Moreover, for graphene sheets with common size (longer than 20 nm), both theoretical and simulation results show that the critical buckling stress and strain are dominated only by the adhesive interactions with substrate and independent of the graphene size. Results in this work provide valuable insight and guidelines for the design and application of graphene-derived materials and nano-electromechanical systems. |
format | Online Article Text |
id | pubmed-5456546 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-54565462017-07-28 Buckling Behavior of Substrate Supported Graphene Sheets Yang, Kuijian Chen, Yuli Pan, Fei Wang, Shengtao Ma, Yong Liu, Qijun Materials (Basel) Article The buckling of graphene sheets on substrates can significantly degrade their performance in materials and devices. Therefore, a systematic investigation on the buckling behavior of monolayer graphene sheet/substrate systems is carried out in this paper by both molecular mechanics simulations and theoretical analysis. From 70 simulation cases of simple-supported graphene sheets with different sizes under uniaxial compression, two different buckling modes are investigated and revealed to be dominated by the graphene size. Especially, for graphene sheets with length larger than 3 nm and width larger than 1.1 nm, the buckling mode depends only on the length/width ratio. Besides, it is revealed that the existence of graphene substrate can increase the critical buckling stress and strain to 4.39 N/m and 1.58%, respectively, which are about 10 times those for free-standing graphene sheets. Moreover, for graphene sheets with common size (longer than 20 nm), both theoretical and simulation results show that the critical buckling stress and strain are dominated only by the adhesive interactions with substrate and independent of the graphene size. Results in this work provide valuable insight and guidelines for the design and application of graphene-derived materials and nano-electromechanical systems. MDPI 2016-01-07 /pmc/articles/PMC5456546/ /pubmed/28787831 http://dx.doi.org/10.3390/ma9010032 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yang, Kuijian Chen, Yuli Pan, Fei Wang, Shengtao Ma, Yong Liu, Qijun Buckling Behavior of Substrate Supported Graphene Sheets |
title | Buckling Behavior of Substrate Supported Graphene Sheets |
title_full | Buckling Behavior of Substrate Supported Graphene Sheets |
title_fullStr | Buckling Behavior of Substrate Supported Graphene Sheets |
title_full_unstemmed | Buckling Behavior of Substrate Supported Graphene Sheets |
title_short | Buckling Behavior of Substrate Supported Graphene Sheets |
title_sort | buckling behavior of substrate supported graphene sheets |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456546/ https://www.ncbi.nlm.nih.gov/pubmed/28787831 http://dx.doi.org/10.3390/ma9010032 |
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