Very low conductivity threshold in bulk isotropic single-walled carbon nanotube-epoxy composites

被引：512

作者：

Bryning, MB ^{[1
]}

Islam, MF ^{[1
]}

Kikkawa, JM ^{[1
]}

Yodh, AG ^{[1
]}

机构：

[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

来源：

ADVANCED MATERIALS | 2005年 / 17卷 / 09期

关键词：

D O I：

10.1002/adma.200401649

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrical conductivity of single-walled carbon nanotube (SWNT)-epoxy composites (see Figure) is investigated as a function of SWNT concentration, mean length, and aggregation. The composites exhibit a percolation-like conductivity with threshold volume fractions as low as 5.2 x 10(-5). These low thresholds are attributed to continuous nanotube chains that form in the semi-dilute concentration regime; higher thresholds result when aggregation is inhibited.

引用

页码：1186 / +

页数：7

共 45 条

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