Comparison of the effective conductivity between composites reinforced by graphene nanosheets and carbon nanotubes

被引：210

作者：

Xie, S. H. ^{[1
]}

Liu, Y. Y. ^{[1
]}

Li, J. Y. ^{[2
]}

机构：

[1] Xiangtan Univ, Fac Mat Optoelect & Phys, Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Hunan, Peoples R China

[2] Univ Washington, Dept Mech Engn, Seattle, WA 98195 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 24期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

D O I：

10.1063/1.2949074

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Both graphene nanosheets and carbon nanotubes have exceptional electric and thermal conductivities, rendering them excellent candidates as second-phase fillers in composite materials to substantially enhance their effective conductivities. Their markedly different geometries, however, can have significant effect on the effective conductivities of composites, which we investigate using an effective medium approximation. It is demonstrated that graphene nanosheet is more effective in conductivity enhancement than carbon nantubes, and both fillers lead to substantially higher conductivity and much reduced percolation threshold in composites. The effects of conductivity anisotropy and interfacial resistance are also discussed.

引用

页数：3

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