Size effect of the surface energy density of nanoparticles

doi:10.1016/j.susc.2015.01.016

IMECH-IR > 非线性力学国家重点实验室

	Size effect of the surface energy density of nanoparticles
	Yao Y (姚寅); Wei YC (魏遥驰); Chen SH(陈少华)
发表期刊	Surface Science
	2015-01-29
卷号	636 页码:19-24
ISSN	0039-6028
摘要	The surface energy density of nanoparticles exhibits an obviously size-dependent behavior. However, how the surface energy density changes with the diameter of nanoparticles is still ambiguous. Based on a recently developed continuum theory considering the size effect in nanomaterials, theoretical analysis is carried out for various fcc metallic nanoparticles. Surface lattice contractions of nanoparticles are predicted and compared with the existing experimental data. As a result, the surface energy density decreases with the increase of nanoparticle diameter. Such a variation trend of surface energy density is contrary to the prediction of existing theoretical models but well consistent with the previously atomistic simulations and density functional calculations. The results in this paper provide a further understanding of the surface effect of nanoparticles, which should be helpful for the design of nanoscale devices or nanomaterials related to nanoparticles, such as NEMs and nanoparticle-reinforced composites.
关键词	Metallic Nanoparticles Size Effect Lattice Contraction Surface Energy Density
学科领域	新型材料的力学问题
DOI	10.1016/j.susc.2015.01.016
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000351798100004
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：77[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/311007/49540
专题	非线性力学国家重点实验室
通讯作者	Chen SH(陈少华)
推荐引用方式 GB/T 7714	Yao Y ,Wei YC ,Chen SH. Size effect of the surface energy density of nanoparticles[J]. Surface Science,2015,636:19-24.
APA	Yao Y ,Wei YC ,&Chen SH.(2015).Size effect of the surface energy density of nanoparticles.Surface Science,636,19-24.
MLA	Yao Y ,et al."Size effect of the surface energy density of nanoparticles".Surface Science 636(2015):19-24.

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