Significant influence of film thickness on the percolation threshold of multiwall carbon nanotube/low density polyethylene composite films

被引：34

作者：

Fu, M. ^{[1
]}

Yu, Y. ^{[1
]}

Xie, J. J. ^{[1
]}

Wang, L. P. ^{[1
]}

Fan, M. Y. ^{[1
]}

Jiang, S. L. ^{[1
]}

Zeng, Y. K. ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Elect Sci & Technol, Wuhan 430074, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 01期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

carbon nanotubes; electrical conductivity; filled polymers; nanocomposites; permittivity; thin films; DIELECTRIC-CONSTANT; BEHAVIOR; CONDUCTIVITY;

D O I：

10.1063/1.3056055

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A series of multiwall carbon nanotube/low density polyethylene composite films with different thicknesses and different carbon nanotube volume fractions was prepared and studied. The result showed an interesting phenomenon which has not been reported before: when the thickness was reduced to the length range of the carbon nanotube filler, it could remarkably affect the percolation threshold of the composite films. Classical theories have been introduced to describe the phenomenon. This result could have significance in future applications of percolative composite thin/thick films.

引用

页数：3

共 30 条

[1]

AFROS AL, 1976, PHYS STATUS SOLIDI B, V76, P475

[2]

BARRANCO AP, 2006, SCRIPTA MATER, V54, P47

[3] CRITICAL BEHAVIOR OF COMPLEX DIELECTRIC-CONSTANT NEAR PERCOLATION THRESHOLD OF A HETEROGENEOUS MATERIAL [J].

BERGMAN, DJ ;

IMRY, Y .

PHYSICAL REVIEW LETTERS, 1977, 39 (19) :1222-1225

[4] Modeling percolation in high-aspect-ratio fiber systems. I. Soft-core versus hard-core models [J].

Berhan, L. ;

Sastry, A. M. .

PHYSICAL REVIEW E, 2007, 75 (04)

[5] Modeling percolation in high-aspect-ratio fiber systems. II. The effect of waviness on the percolation onset [J].

Berhan, L. ;

Sastry, A. M. .

PHYSICAL REVIEW E, 2007, 75 (04)

[6] Transparent poly(methyl methacrylate)/single-walled carbon nanotube (PMMA/SWNT) composite films with increased dielectric constants [J].

Clayton, LM ;

Sikder, AK ;

Kumar, A ;

Cinke, M ;

Meyyappan, M ;

Gerasimov, TG ;

Harmon, JP .

ADVANCED FUNCTIONAL MATERIALS, 2005, 15 (01) :101-106

[7] Dielectric properties of upright carbon fiber filled poly(vinylidene fluoride) composite with low percolation threshold and weak temperature dependence [J].

Dang, Zhi-Min ;

Wu, Jin-Ping ;

Xu, Hai-Ping ;

Yao, Sheng-Hong ;

Jiang, Mei-Juan ;

Bai, Jinbo .

APPLIED PHYSICS LETTERS, 2007, 91 (07)

[8] Dielectric behavior and dependence of percolation threshold on the conductivity of fillers in polymer-semiconductor composites [J].

Dang, ZM ;

Nan, CW ;

Xie, D ;

Zhang, YH ;

Tjong, SC .

APPLIED PHYSICS LETTERS, 2004, 85 (01) :97-99

[9] Thick film polymer-ceramic composites for pyroelectric applications [J].

Dietze, M. ;

Krause, J. ;

Solterbeck, C. -H. ;

Es-Souni, M. .

JOURNAL OF APPLIED PHYSICS, 2007, 101 (05)

[10] Tunneling effect in a polymer/carbon nanotube nanocomposite strain sensor [J].

Hu, Ning ;

Karube, Yoshifumi ;

Yan, Cheng ;

Masuda, Zen ;

Fukunaga, Hisao .

ACTA MATERIALIA, 2008, 56 (13) :2929-2936

← 1 2 3 →