Toughening two dimensional materials through lattice disorder

doi:10.1016/j.carbon.2023.118268

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

	Toughening two dimensional materials through lattice disorder
	Xie WH(谢文慧); Zhang XB(张曦蓓); Wei YJ(魏宇杰); Gao, Huajian
刊名	CARBON
	2023-09-01
卷号	213 页码:9
关键词	Monolayer amorphous carbon Lattice disorder Toughening Rippling Graphene
ISSN号	0008-6223
DOI	10.1016/j.carbon.2023.118268
通讯作者	Wei, Yujie(yujie_wei@lnm.imech.ac.cn) ; Gao, Huajian(huajian.gao@ntu.edu.sg)
英文摘要	Carbon-based two-dimensional (2D) materials, with graphene being the most prominent example, are some of the strongest materials existing today due to their covalent bonding but at the same time also the most fragile, with fracture toughness close to that of an ideally brittle solid, due to their intrinsic lack of effective dissipation mechanisms. Here, by investigating fracture mechanisms in monolayer amorphous carbon (MAC), we reveal a novel strategy to toughen 2D materials through lattice disorder. It is shown that lattice disorder results in rippling which can alleviate stress concentration in the vicinity of crack-tips and render MAC flaw tolerant. Consequently, MAC outperforms graphene in resisting brittle fracture and endures larger strain to failure in the presence of a preexisting crack. Our work sheds light on the mechanisms of crack propagation in MAC and also suggests that it might be generally possible to design tough 2D materials through lattice disorder.
分类号	一类
资助项目	NSFC Basic Science Center Program for 'Multiscale Problems in Nonlinear Mechanics '[11988102] ; Nanyang Technological University[002479 -00001] ; Agency for Science, Technology and Research (A*STAR) in Singapore
WOS关键词	REACTIVE FORCE-FIELD ; MECHANICAL-PROPERTIES ; INTRINSIC STRENGTH ; SUSPENDED GRAPHENE ; ELASTIC PROPERTIES ; FRACTURE ; DEFECTS ; TOUGHNESS ; CARBON ; SIZE
WOS研究方向	Chemistry ; Materials Science
语种	英语
WOS记录号	WOS:001147674000001
资助机构	NSFC Basic Science Center Program for 'Multiscale Problems in Nonlinear Mechanics ' ; Nanyang Technological University ; Agency for Science, Technology and Research (A*STAR) in Singapore
其他责任者	Wei, Yujie ; Gao, Huajian
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94249]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Xie WH,Zhang XB,Wei YJ,et al. Toughening two dimensional materials through lattice disorder[J]. CARBON,2023,213:9.
APA	谢文慧,张曦蓓,魏宇杰,&Gao, Huajian.(2023).Toughening two dimensional materials through lattice disorder.CARBON,213,9.
MLA	谢文慧,et al."Toughening two dimensional materials through lattice disorder".CARBON 213(2023):9.