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The Comparison of Experimental and Theoretical Study on Graphene Peeling off from SiO2

  • Xi'an Jiaotong University

科研成果: 书/报告/会议事项章节会议稿件同行评审

1 引用 (Scopus)

摘要

By surface scanning Raman spectrum, the peeling off state of graphene from SiO2 surface was observed. It is found because the defects of graphene produced during the transferring process, graphene are easily exfoliated. A straight upward velocity was forced on the topmost graphene, and the exfoliation process of graphene was observed when weak contacted with SiO2 substrate. In multilayer graphene system, three two critical velocities to exfoliate graphene from SiO2 surface were found, and three kinds of distinct exfoliation processes took place determined by critical upward velocities. The critical velocity to exfoliate all graphene layers was even 10 times smaller than that of topmost layer. The maximum exfoliation force to exfoliate the topmost layer graphene was 3200 times larger than that of all graphene layers. And it required 139.79 mJ/m2 to get monolayer graphene from multilayers, while peel off all layers without effort.

源语言英语
主期刊名15th IEEE International Conference on Nano/Micro Engineered and Molecular System, NEMS 2020
出版商Institute of Electrical and Electronics Engineers Inc.
1-4
页数4
ISBN(电子版)9781728172309
DOI
出版状态已出版 - 27 9月 2020
活动15th IEEE International Conference on Nano/Micro Engineered and Molecular System, NEMS 2020 - Virtual, San Diego, 美国
期限: 27 9月 202030 9月 2020

出版系列

姓名15th IEEE International Conference on Nano/Micro Engineered and Molecular System, NEMS 2020

会议

会议15th IEEE International Conference on Nano/Micro Engineered and Molecular System, NEMS 2020
国家/地区美国
Virtual, San Diego
时期27/09/2030/09/20

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