Electromechanical properties of metallic, quasimetallic, and semiconducting carbon nanotubes under stretching

被引：392

作者：

Cao, J ^{[1
]}

Wang, Q ^{[1
]}

Dai, HJ ^{[1
]}

机构：

[1] Stanford Univ, Dept Chem, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.90.157601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An electromechanical system is constructed to explore the electrical properties of various types of suspended single-walled carbon nanotubes under the influence of tensile stretching. Small band-gap semiconducting (or quasimetallic) nanotubes exhibit the largest resistance changes and piezoresistive gauge factors (similar to600 to 1000) under axial strains. Metallic nanotubes exhibit much weaker but nonzero sensitivity. Comparison between experiments and theoretical predictions and potential applications of nanotube electromechanical systems for physical sensors (e.g., strain gauges, pressure sensors, etc.) are discussed.

引用

页数：4

共 20 条

[1]

Dresselhaus M. S., 2001, CARBON NANOTUBES, V80

[2]

Fraden J., 1996, HDB MODERN SENSORS

[3] Integration of suspended carbon nanotube arrays into electronic devices and electromechanical systems [J].