Characterization of Vertically Aligned Multiwall Carbon Nanotube Arrays Based on Multiconductor Transmission Line Model

Author

Jiefu Zhang ; Yang Hao

Author_Institution

Sch. of Electron. Eng. & Comput. Sci., Queen Mary, Univ. of London, London, UK

Volume

13

fYear

2014

fDate

2014

Firstpage

1353

Lastpage

1356

Abstract

In this letter, a technique to extract 2-port S-parameters of an arbitrary vertically aligned carbon nanotube (CNT) array is proposed based on the multiconductor transmission line (MTL) model. A closed-form analytical solution has been developed to model multiwall CNT (MWCNT) arrays under a common mode excitation. Simulated S-parameters from the MTL model are compared to those from the effective single-conductor (ESC) model. The absorptions of CNT arrays are calculated, and a good matching with measurement results has been obtained. Finally, some key parameters of CNT arrays such as wave propagation velocities for different dimensions and array sizes are investigated numerically.

Keywords

S-parameters; carbon nanotubes; multiconductor transmission lines; 2-port S-parameters; MTL model; MWCNT arrays; closed-form analytical solution; multiconductor transmission line model; numerical analysis; vertically aligned multiwall carbon nanotube arrays; wave propagation velocity; Absorption; Antenna arrays; Carbon nanotubes; Impedance; Power transmission lines; Scattering parameters; Transmission line measurements; $S$-parameter; Multiconductor transmission line; multiwall carbon nanotube; vertically aligned array;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2337309

Filename

6851151