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.
Source PublicationMECHANICS OF MATERIALS
2016
Volume100Pages:12-21
ISSN0167-6636
AbstractThe 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.
KeywordSurface Effect Nanowire Bending Surface Energy Density Effective Elastic Modulus
DOI10.1016/j.mechmat.2016.06.005
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000381953800002
WOS KeywordSurface effect ; Nanowire ; Bending ; Surface energy density ; Effective elastic modulus
WOS Research AreaMaterials Science ; Mechanics
WOS SubjectMaterials Science, Multidisciplinary ; Mechanics
Funding OrganizationThe 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.
DepartmentLNM仿生材料与固体的微尺度力学
Classification一类
RankingTrue
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59752
Collection非线性力学国家重点实验室
Corresponding AuthorChen, SH (reprint author), Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China.
Recommended Citation
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.
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