Bending rigidity and Gaussian bending stiffness of single-layered graphene

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	Bending rigidity and Gaussian bending stiffness of single-layered graphene
	Wei YJ(魏宇杰); Wang BL(王宝林); Wu JT(吴江涛); Yang RG; Dunn ML
刊名	NANO LETTERS
	2013-01-09
通讯作者邮箱	yujie_wei@lnm.imech.ac.cn; ronggui.yang@colorado.edu; martin.dunn@colorado.edu
卷号	13 期号:1 页码:26-30
关键词	Bending rigidity Gaussian bending stiffness graphene Helfrich Hamiltonian density functional theory
ISSN号	1530-6984
通讯作者	Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
产权排序	[Wei, Yujie; Wang, Baoling; Wu, Jiangtao] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; [Yang, Ronggui; Dunn, Martin L.] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA
合作状况	国际
中文摘要	Bending rigidity and Gaussian bending stiffness are the two key parameters that govern the rippling of suspended graphene-an unavoidable phenomenon of two-dimensional materials when subject to a thermal or mechanical field. A reliable determination about these two parameters is of significance for both the design and the manipulation of graphene morphology for engineering applications. By combining the density functional theory calculations of energies of fullerenes and single wall carbon nanotubes with the configurational energy of membranes determined by Helfrich Hamiltonian, we have designed a theoretical approach to accurately determine the bending rigidity and Gaussian bending stiffness of single-layered graphene. The bending rigidity and Gaussian bending stiffness of single-layered graphene are 1.44 eV (2.31 x 10(-19) N m) and -1.52 eV (2.43 x 10(-19) N m), respectively. The bending rigidity is close to the experimental result. Interestingly, the bending stiffness of graphene is close to that of lipid bilayers of cells about 1-2 eV, which might mechanically justify biological applications of graphene.
学科主题	固体力学
分类号	一类
收录类别	SCI ; EI
资助信息	Chinese Academy of Sciences; MOST 973 of China [2012CB937500]; National Natural Science Foundation of China (NSFC) [11021262]; AFOSR [FA9550-11-1-0109]
原文出处	http://dx.doi.org/10.1021/nl303168w
语种	英语
WOS记录号	WOS:000313142300005
公开日期	2013-03-07
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/47034]
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	Wei YJ,Wang BL,Wu JT,et al. Bending rigidity and Gaussian bending stiffness of single-layered graphene[J]. NANO LETTERS,2013,13(1):26-30.
APA	魏宇杰,王宝林,吴江涛,Yang RG,&Dunn ML.(2013).Bending rigidity and Gaussian bending stiffness of single-layered graphene.NANO LETTERS,13(1),26-30.
MLA	魏宇杰,et al."Bending rigidity and Gaussian bending stiffness of single-layered graphene".NANO LETTERS 13.1(2013):26-30.