Surface effect in the bending of nanowires
文献类型：期刊论文
| 作者 | Yao Y(姚寅) ; Chen SH(陈少华)
|
| 刊名 | MECHANICS OF MATERIALS
 |
| 出版日期 | 2016 |
| 卷号 | 100页码:12-21 |
| 通讯作者邮箱 | chenshaohua72@hotmail.com |
| 关键词 | Surface effect Nanowire Bending Surface energy density Effective elastic modulus |
| ISSN号 | 0167-6636 |
| 产权排序 | [Yao, Yin] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; [Chen, Shaohua] Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China |
| 通讯作者 | Chen, SH (reprint author), Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China. |
| 中文摘要 | 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. |
| 分类号 | 一类 |
| 类目[WOS] | Materials Science, Multidisciplinary ; Mechanics |
| 研究领域[WOS] | Materials Science ; Mechanics |
| 关键词[WOS] | Surface effect ; Nanowire ; Bending ; Surface energy density ; Effective elastic modulus |
| 收录类别 | SCI ; EI |
| 原文出处 | http://dx.doi.org/10.1016/j.mechmat.2016.06.005 |
| 语种 | 英语 |
| WOS记录号 | WOS:000381953800002 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/59752]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yao Y,Chen SH. Surface effect in the bending of nanowires[J]. MECHANICS OF MATERIALS,2016,100:12-21. |
| APA | 姚寅,&陈少华.(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. |
入库方式： OAI收割
来源：力学研究所
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