Anomalous heat conduction behavior in thin finite-size silicon nanowires

doi:10.1088/0957-4484/21/15/155704

	Anomalous heat conduction behavior in thin finite-size silicon nanowires
	Yang, Xueming 1,2,3; To, Albert C.1,2; Tian, Rong 4
	2010-04-16
发表期刊	NANOTECHNOLOGY
ISSN	0957-4484
卷号	21 期号:15 页码:6
摘要	Anomalous heat conduction behavior is observed for the first time using non-equilibrium molecular dynamics (NEMD) simulations to obtain the thermal conductivity of thin finite-size silicon nanowires (NWs) in the < 001 > lattice direction. In the series of simulations, the length dependence of thermal conductivity of thin silicon nanowires (NWs) ranging from 6 to 434 nm is analyzed. It is found that a transition occurs in the thermal conductivity versus length curve after the initial convergence trend appears near the mean free path of bulk silicon. Because no experimental measurements of thermal conductivity are available for sub-10 nm diameter silicon NWs, different NEMD methods are used to test and analyze this anomalous thermal behavior of thin Si NWs with different boundary conditions. The underlying mechanism of the observed behavior is inferred from MD simulations with different boundary conditions so that the anomalous behavior is mainly caused by border restriction and boundary scattering of the thin silicon NWs.
DOI	10.1088/0957-4484/21/15/155704
收录类别	SCI
语种	英语
资助项目	National Science Foundation (NSF)[EEC-0926885] ; National Natural Science Foundation of China (NSFC)
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000275901500020
出版者	IOP PUBLISHING LTD
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/12235
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	To, Albert C.
作者单位	1.Univ Pittsburgh, Dept Civil & Environm Engn, Pittsburgh, PA 15260 USA 2.Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15260 USA 3.N China Elect Power Univ, Dept Elect & Commun Engn, Baoding 071003, Peoples R China 4.Chinese Acad Sci, Inst Comp Technol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yang, Xueming,To, Albert C.,Tian, Rong. Anomalous heat conduction behavior in thin finite-size silicon nanowires[J]. NANOTECHNOLOGY,2010,21(15):6.
APA	Yang, Xueming,To, Albert C.,&Tian, Rong.(2010).Anomalous heat conduction behavior in thin finite-size silicon nanowires.NANOTECHNOLOGY,21(15),6.
MLA	Yang, Xueming,et al."Anomalous heat conduction behavior in thin finite-size silicon nanowires".NANOTECHNOLOGY 21.15(2010):6.