| 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.
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| Source Publication | MECHANICS OF MATERIALS
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| 2016 | |
| Volume | 100Pages:12-21 |
| ISSN | 0167-6636 |
| Abstract | 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. |
| Keyword | Surface Effect Nanowire Bending Surface Energy Density Effective Elastic Modulus |
| DOI | 10.1016/j.mechmat.2016.06.005 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000381953800002 |
| WOS Keyword | Surface effect ; Nanowire ; Bending ; Surface energy density ; Effective elastic modulus |
| WOS Research Area | Materials Science ; Mechanics |
| WOS Subject | Materials Science, Multidisciplinary ; Mechanics |
| Funding Organization | 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. |
| Department | LNM仿生材料与固体的微尺度力学 |
| Classification | 一类 |
| Ranking | True |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/59752 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Chen, 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. |
| Files in This Item: | Download All | |||||
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| a2016-131.pdf（2250KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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