Effects of Crack Formation on the Mechanical Properties of Bilayer Graphene: A Comparative Analysis

doi:10.3390/cryst13040584

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Effects of Crack Formation on the Mechanical Properties of Bilayer Graphene: A Comparative Analysis
	Yu, Taotao ; Li, Jianyu ; Yang, Ziqiang ; Li, Haipeng ; Peng Q(彭庆); Tang, HoKin
刊名	CRYSTALS ; 4
	2023-04
卷号	13 页码:584
关键词	bilayer graphene molecular dynamics simulation mechanical properties Young's modulus precrack system
DOI	10.3390/cryst13040584
英文摘要	We present a molecular dynamics simulation study on the effects of crack formation on the mechanical properties of bilayer graphene. Bilayer graphene possesses unique electronic properties that can be modified by applying a voltage, making it an attractive material for various applications. We examined how the mechanical properties of bilayer graphene vary under various crack configurations and temperatures, measuring Young's modulus, fracture toughness, fracture strain, and fracture stress. We compared the effect of crack presence on single and both layers and found the appearance of double peaks in the stress-strain curves in the case of a monolayer crack, indicating a subsequent fracture of the cracked layer and the uncracked layer. We also examined the effect of crack shape, size, and orientation on mechanical properties, including circular, hexagonal, and rectangular cracks along two axes. We found that both circular and hexagonal cracks had a smaller Young's modulus and toughness than rectangular cracks, and the orientation of the crack had a significant impact on the mechanical properties, with a 2.5-times higher toughness for cracks with a length of 15. Additionally, we found that Young's modulus decreases with increasing temperature in bilayer graphene with cracks on both layers. Our findings provide valuable insights into the potential applications of bilayer graphene in the design of advanced nanoscale electronic devices.
分类号	二类
WOS研究方向	WOS:000981019000001
语种	英语
资助机构	Start-Up Research Fund in HITSZ [ZX20210478, X20220001] ; Young Scientists Fund of the National Natural Science Foundation of China [12204130] ; Fundamental Research Funds for the Central Universities of China [2019ZDPY16] ; Key Academic Discipline Project of CUMT [2022WLXK08] ; Shenzhen Science and Technology Program [KQTD20200820113045081] ; National Natural Science Foundation of China [12272378] ; LiYing Program of the Institute of Mechanics, Chinese Academy of Sciences [E1Z1011001]
其他责任者	Tang, HK
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92202]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.(Peng Qing) Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 2.(Peng Qing) Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100190 Peoples R China 3.(Yang Ziqiang, Li Haipeng) China Univ Min & Technol Sch Mat Sci & Phys Xuzhou 221116 Peoples R China 4.(Yu Taotao, Li Jianyu, Peng Qing, Tang Ho-Kin) Harbin Inst Technol Shenzhen Sch Sci Shenzhen 518055 Peoples R China
推荐引用方式 GB/T 7714	Yu, Taotao,Li, Jianyu,Yang, Ziqiang,et al. Effects of Crack Formation on the Mechanical Properties of Bilayer Graphene: A Comparative Analysis[J]. CRYSTALS, 4,2023,13:584.
APA	Yu, Taotao,Li, Jianyu,Yang, Ziqiang,Li, Haipeng,彭庆,&Tang, HoKin.(2023).Effects of Crack Formation on the Mechanical Properties of Bilayer Graphene: A Comparative Analysis.CRYSTALS,13,584.
MLA	Yu, Taotao,et al."Effects of Crack Formation on the Mechanical Properties of Bilayer Graphene: A Comparative Analysis".CRYSTALS 13(2023):584.