Surface effect on resonant properties of nanowires predicted by an elastic theory for nanomaterials

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	Surface effect on resonant properties of nanowires predicted by an elastic theory for nanomaterials
	Yao Y(姚寅); Chen SH(陈少华)
刊名	JOURNAL OF APPLIED PHYSICS
	2015-07-28
通讯作者邮箱	chenshaohua72@hotmail.com
卷号	118 期号:4 页码:44303
ISSN号	0021-8979
通讯作者	Chen, SH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
产权排序	[Yao, Yin; Chen, Shaohua] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
中文摘要	A recently developed continuum theory considering surface effect in nanomaterials is adopted to investigate the resonant properties of nanowires with different boundary conditions in the present paper. The main feature of the adopted theory is that the surface effect in nanomaterials is characterized by the surface energy density of the corresponding bulk materials and the surface relaxation parameter in nanoscale. Based on a fixed-fixed beam model and a cantilever one, the governing equation of resonant frequency for corresponding nanowires is obtained. Numerical calculation of the fundamental resonant frequency is carried out, the result of which is well consistent with the existing numerical ones. Comparing to the result predicted by the conventionally structural dynamics, the resonant frequency of a fixed-fixed nanowire is improved, while that of a cantilever nanowire is weakened due to the surface effect. Both a decreasing characteristic size (height or diameter) and an increasing aspect ratio could further enhance the varying trend of resonant properties for both kinds of nanowires. The present result should be helpful for the design of nano-devices and nanostructures related to nanowires. (C) 2015 AIP Publishing LLC.
学科主题	Physics
分类号	一类/力学重要期刊
类目[WOS]	Physics, Applied
研究领域[WOS]	Physics
收录类别	SCI ; EI
原文出处	http://dx.doi.org/10.1063/1.4927290
语种	英语
WOS记录号	WOS:000358928000032
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/55322]
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 on resonant properties of nanowires predicted by an elastic theory for nanomaterials[J]. JOURNAL OF APPLIED PHYSICS,2015,118(4):44303.
APA	Yao Y,&Chen SH.(2015).Surface effect on resonant properties of nanowires predicted by an elastic theory for nanomaterials.JOURNAL OF APPLIED PHYSICS,118(4),44303.
MLA	Yao Y,et al."Surface effect on resonant properties of nanowires predicted by an elastic theory for nanomaterials".JOURNAL OF APPLIED PHYSICS 118.4(2015):44303.