Surface effect in the bending of nanowires

doi:10.1016/j.mechmat.2016.06.005

IMECH-IR > 非线性力学国家重点实验室

	Surface effect in the bending of nanowires
	Yao Y(姚寅); Chen SH(陈少华); Chen, SH (reprint author), Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China.
发表期刊	MECHANICS OF MATERIALS
	2016
卷号	100 页码:12-21
ISSN	0167-6636
摘要	The surface effect in the bending of nanowires (nanobeams), including cantilever nanowires and fixed-fixed ones, is investigated in this paper with a recently developed elastic theory for nanomaterials, in which only the bulk surface-energy density and the surface-relaxation parameter are involved as two independent parameters to characterize the surface effect. Closed-form solutions of the maximum deflection and the effective elastic modulus in both kinds of nanowires are achieved. It is found that, comparing to the prediction of the classically elastic beam theory, the cantilever nanowire is softened, while the fixed-fixed one is stiffened by the surface effect in nanoscales, consistent well with the existing experimental measurements. Furthermore, an increasing aspect ratio of nanowires can further enhance the stiffening behavior of fixed-fixed nanowires and the softening behavior of cantilever ones, respectively. The present result should be helpful not only for explaining different surface effects in nanowires with different boundary conditions, but also for the design of nano-structures and nano-devices related to nanowires. (C) 2016 Elsevier Ltd. All rights reserved.
关键词	Surface Effect Nanowire Bending Surface Energy Density Effective Elastic Modulus
DOI	10.1016/j.mechmat.2016.06.005
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000381953800002
关键词[WOS]	Surface effect ; Nanowire ; Bending ; Surface energy density ; Effective elastic modulus
WOS研究方向	Materials Science ; Mechanics
WOS类目	Materials Science, Multidisciplinary ; Mechanics
项目资助者	The work reported here is supported by NSFC through grants #11372317, #11402270, #11532013, the Nano-project (2012CB937500), and the CAS/SAFEA International Partnership Program for Creative Research Teams.
课题组名称	LNM仿生材料与固体的微尺度力学
论文分区	一类
力学所作者排名	True
引用统计	被引频次：46[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/311007/59752
专题	非线性力学国家重点实验室
通讯作者	Chen, SH (reprint author), Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China.
推荐引用方式 GB/T 7714	Yao Y,Chen SH,Chen, SH . Surface effect in the bending of nanowires[J]. MECHANICS OF MATERIALS,2016,100:12-21.
APA	姚寅,陈少华,&Chen, SH .(2016).Surface effect in the bending of nanowires.MECHANICS OF MATERIALS,100,12-21.
MLA	姚寅,et al."Surface effect in the bending of nanowires".MECHANICS OF MATERIALS 100(2016):12-21.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
a2016-131.pdf（2250KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载