Impact of isotopic disorders on thermal transport properties of   nanotubes and nanowires

doi:10.1063/1.4906138

CORC > 北京大学 > 工学院

	Impact of isotopic disorders on thermal transport properties of nanotubes and nanowires
	Sun, Tao ; Kang, Wei ; Wang, Jianxiang
刊名	应用物理杂志
	2015
关键词	SILICON NANOWIRES CONDUCTIVITY SCATTERING DYNAMICS LATTICES IMPERFECTIONS TEMPERATURE NANOSCALE INTERFACE GRAPHENE
DOI	10.1063/1.4906138
英文摘要	We present a one-dimensional lattice model to describe thermal transport in isotopically doped nanotubes and nanowires. The thermal conductivities thus predicted, as a function of isotopic concentration, agree well with recent experiments and other simulations. Our results display that for any given concentration of isotopic atoms in a lattice without sharp atomic interfaces, the maximum thermal conductivity is attained when isotopic atoms are placed regularly with an equal space, whereas the minimum is achieved when they are randomly inserted with a uniform distribution. Non-uniformity of disorder can further tune the thermal conductivity between the two values. Moreover, the dependence of the thermal conductivity on the nanoscale feature size becomes weak at low temperature when disorder exists. In addition, when self-consistent thermal reservoirs are included to describe diffusive nanomaterials, the thermal conductivities predicted by our model are in line with the results of macroscopic theories with an interfacial effect. Our results suggest that the disorder provides an additional freedom to tune the thermal properties of nanomaterials in many technological applications including nanoelectronics, solid-state lighting, energy conservation, and conversion. (C) 2015 AIP Publishing LLC.; Physics, Applied; SCI(E); EI; 0; ARTICLE; jxwang@pku.edu.cn; 3; 117
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154083]
专题	工学院
推荐引用方式 GB/T 7714	Sun, Tao,Kang, Wei,Wang, Jianxiang. Impact of isotopic disorders on thermal transport properties of nanotubes and nanowires[J]. 应用物理杂志,2015.
APA	Sun, Tao,Kang, Wei,&Wang, Jianxiang.(2015).Impact of isotopic disorders on thermal transport properties of nanotubes and nanowires.应用物理杂志.
MLA	Sun, Tao,et al."Impact of isotopic disorders on thermal transport properties of nanotubes and nanowires".应用物理杂志 (2015).