Piezoresistive effect in carbon nanotube films

被引：24

作者：

Li, Y ^{[1
]}

Wang, WL ^{[1
]}

Liao, KJ ^{[1
]}

Hu, CU ^{[1
]}

Huang, Z ^{[1
]}

Feng, Q ^{[1
]}

机构：

[1] Chongqing Univ, Dept Appl Phys, Chongqing 400044, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2003年 / 48卷 / 02期

基金：

中国国家自然科学基金;

关键词：

piezoresistive effect; carbon nanotubes; gauge factor; sensors;

D O I：

10.1360/03tb9024

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The piezoresistive effect of the pristine carbon nanotube (CNT) films has been studied. Carbon nanotubes were synthesized by hot filament chemical vapor deposition. The piezoresistive effect in the pristine CNT films was studied by a three-point bending test. The gauge factor for the pristine CNT films under 500 microstrains was found to be at least 65 at room temperature, and increased with temperature, exceeding that of polycrystalline silicon (30) at 35degreesC. The origin of the piezoresistivity in CNT films may be ascribed to a pressure-induced change in the band gap and the defects.

引用

页码：125 / 127

页数：3

共 13 条

[1] PIEZORESISTIVITY IN VAPOR-DEPOSITED DIAMOND FILMS [J].

ASLAM, M ;

TAHER, I ;

MASOOD, A ;

TAMOR, MA ;

POTTER, TJ .

APPLIED PHYSICS LETTERS, 1992, 60 (23) :2923-2925

[2] Electronic structure and localized states at carbon nanotube tips [J].

Carroll, DL ;

Redlich, P ;

Ajayan, PM ;

Charlier, JC ;

Blase, X ;

DeVita, A ;

Car, R .

PHYSICAL REVIEW LETTERS, 1997, 78 (14) :2811-2814

[3] Study on the piezoresistive effect of crystalline and polycrystalline diamond under uniaxial strains [J].

Fang, L ;

Wang, WL ;

Ding, PD ;

Liao, KJ ;

Wang, J .

JOURNAL OF APPLIED PHYSICS, 1999, 86 (09) :5185-5193

[4] HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].

IIJIMA, S .

NATURE, 1991, 354 (6348) :56-58

[5] Alignment of carbon nanotubes in a polymer matrix by mechanical stretching [J].

Jin, L ;

Bower, C ;

Zhou, O .

APPLIED PHYSICS LETTERS, 1998, 73 (09) :1197-1199

[6] Amphoteric doping of single-wall carbon-nanotube thin films as probed by optical absorption spectroscopy [J].

Kazaoui, S ;

Minami, N ;

Jacquemin, R ;

Kataura, H ;

Achiba, Y .

PHYSICAL REVIEW B, 1999, 60 (19) :13339-13342

[7] Tight-binding computation of the STM image of carbon nanotubes [J].

Meunier, V ;

Lambin, P .

PHYSICAL REVIEW LETTERS, 1998, 81 (25) :5588-5591

[8] A piezoresistive carbon filament polymer-matrix composite strain sensor [J].

Shui, XP ;

Chung, DDL .

SMART MATERIALS & STRUCTURES, 1996, 5 (02) :243-246

[9] Model of carbon nanotube growth through chemical vapor deposition [J].

Sinnott, SB ;

Andrews, R ;

Qian, D ;

Rao, AM ;

Mao, Z ;

Dickey, EC ;

Derbyshire, F .

CHEMICAL PHYSICS LETTERS, 1999, 315 (1-2) :25-30

[10] PIEZORESISTIVE EFFECT OF DIAMOND FILMS PRODUCED BY DC PLASMA CVD [J].

WANG, WL ;

LIAO, KJ .

CHINESE PHYSICS LETTERS, 1994, 11 (09) :589-592

← 1 2 →