Size-dependent surface energy density of typically fcc metallic nanomaterials

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	Size-dependent surface energy density of typically fcc metallic nanomaterials
	Zhang C(张存); Yao Y(姚寅); Chen SH(陈少华); Chen, SH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
发表期刊	COMPUTATIONAL MATERIALS SCIENCE
	2014-02-01
卷号	82 页码:372-377
ISSN	0927-0256
摘要	The surface energy density of nano-sized structural elements exhibits an obvious size-dependent feature. To study this interesting phenomenon, atomistic calculations are carried out in the present paper for different face-centered-cubic (fcc) metallic nano-slabs. Lagrangian and Eulerian descriptions are adopted, respectively, in order to find the varying trends of surface energy densities in an initially un-deformed configuration and a current one. It is found that the Lagrangian surface energy density increases monotonically with an increase of the nano-slab's thickness in the former no matter what the surface orientation is; while the variation of the Eulerian one is indefinite. The surface relaxation parameters are further simulated for differently oriented surfaces, which gives a very good explanation for the differences between the Lagrangian and Eulerian surface energy densities. The results in this paper should be a useful supplement to theoretical studies on the surface/interface effect of nanomaterials.
关键词	Nanomaterials Surface Energy Density Surface Relaxation Parameter Lagrangian Configuration Eulerian Configuration
学科领域	固体力学
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000327533300054
项目资助者	NSFC [11125211, 11021262, 2012CB937500]
课题组名称	LNM仿生材料与固体的微尺度力学
论文分区	二类/Q2
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/48081
专题	非线性力学国家重点实验室
通讯作者	Chen, SH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Zhang C,Yao Y,Chen SH,et al. Size-dependent surface energy density of typically fcc metallic nanomaterials[J]. COMPUTATIONAL MATERIALS SCIENCE,2014,82:372-377.
APA	张存,姚寅,陈少华,&Chen, SH .(2014).Size-dependent surface energy density of typically fcc metallic nanomaterials.COMPUTATIONAL MATERIALS SCIENCE,82,372-377.
MLA	张存,et al."Size-dependent surface energy density of typically fcc metallic nanomaterials".COMPUTATIONAL MATERIALS SCIENCE 82(2014):372-377.

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