Electrical-thermal switching in carbon-black-polymer composites as a local effect

被引：42

作者：

Azulay, D ^{[1
]}

Eylon, M ^{[1
]}

Eshkenazi, O ^{[1
]}

Toker, D ^{[1
]}

Balberg, M ^{[1
]}

Shimoni, N ^{[1
]}

Millo, O ^{[1
]}

Balberg, I ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.90.236601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Following the lack of microscopic information about the intriguing well-known electrical-thermal switching mechanism in carbon-black-polymer composites, we applied atomic force microscopy in order to reveal the local nature of the process and correlated it with the characteristics of the widely used commercial switches. We conclude that the switching events take place in critical interparticle tunneling junctions that carry most of the current. The macroscopic switched state is then a result of a dynamic-stationary state of fast switching and slow reconnection of the corresponding junctions.

引用

页码：4 / 236601

页数：4

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