Griffith Criterion for Brittle Fracture in Graphene

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	Griffith Criterion for Brittle Fracture in Graphene
	Yin HQ; Qi HJ; Fan FF; Zhu T; Wang BL(王宝林); Wei YJ(魏宇杰)
刊名	NANO LETTERS
	2015-01
通讯作者邮箱	yujie_wei@lnm.imech.ac.cn
卷号	15 期号:3 页码:1918-1924
关键词	Griffith criterion graphene fracture edge energy molecular dynamics
ISSN号	1530-6984
通讯作者	Wei, YJ (reprint author), Chinese Acad Sci, LNM, Inst Mech, Beijing 100190, Peoples R China.
产权排序	[Yin, Hanqing; Wang, Baolin; Wei, Yujie] Chinese Acad Sci, LNM, Inst Mech, Beijing 100190, Peoples R China; [Qi, H. Jerry; Fan, Feifei; Zhu, Ting] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA
中文摘要	There are prevailing concerns with the critical dimensions when conventional theories break down. Here we find that the Griffith criterion remains valid for cracks down to 10 rim but overestimates the strength of shorter cracks. We observe the preferred crack extension along the zivag edge in graphene, and explain this phenomenon by local strength-based failure rather, than energy-based Griffith criterion. These results provide a mechanistic basis for reliable applications of graphene in miniaturized: devices and nanocomposites.
学科主题	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
分类号	一类
类目[WOS]	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
研究领域[WOS]	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]	POLYCRYSTALLINE GRAPHENE ; INTRINSIC STRENGTH ; GRAIN-BOUNDARIES ; SHEETS
收录类别	SCI ; EI
原文出处	http://dx.doi.org/10.1021/nl5047686
语种	英语
WOS记录号	WOS:000351188000072
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/49908]
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	Yin HQ,Qi HJ,Fan FF,et al. Griffith Criterion for Brittle Fracture in Graphene[J]. NANO LETTERS,2015,15(3):1918-1924.
APA	Yin HQ,Qi HJ,Fan FF,Zhu T,Wang BL,&Wei YJ.(2015).Griffith Criterion for Brittle Fracture in Graphene.NANO LETTERS,15(3),1918-1924.
MLA	Yin HQ,et al."Griffith Criterion for Brittle Fracture in Graphene".NANO LETTERS 15.3(2015):1918-1924.