Impedance of Single-Walled Carbon Nanotube Fibers

被引：3
|
作者：
Ksenevich, V. K. [1 ]
Gorbachuk, N. I. [1 ]
Poklonski, N. A. [1 ]
Samuilov, V. A. [2 ]
Kozlov, M. E. [3 ]
Wieck, A. D. [4 ]
机构：
[1] Belarusian State Univ, Dept Phys, Minsk 220030, BELARUS
[2] SUNY Stony Brook, Dept Mat Sci, Stony Brook, NY 11794 USA
[3] Univ Texas Dallas, Nano Tech Inst, Richardson, TX 75083 USA
[4] Ruhr Univ Bochum, Dept Phys & Astron, Bochum, Germany
来源：
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES | 2012年 / 20卷 / 4-7期
关键词：
Carbon nanotubes; electrical properties; impedance; capacitance; inductance;
D O I：
10.1080/1536383X.2012.655562
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Impedance measurements of single-wall carbon nanotube (SWCNT) fibers were carried out in the frequency range of 20-10(6) Hz at temperatures 4.2 < T < 300 K and in the range of applied bias voltage 0-5 V. It was found that in the low frequency range (f similar to 1-20 kHz) at low temperatures and at bias voltage U > 2 V sign of the imaginary part of impedance was changed from negative to positive, indicating the existence of the crossover from capacitive reactance to inductive one. This crossover was induced by the decrease of height of the energy barriers between nanotubes at the increase of bias voltage. As a result decrease of the impedance of the fibers is accompanied by the rising of the role of kinetic inductance of separate nanotubes.
引用
收藏
页码：434 / 438
页数：5
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