Title :
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
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;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2337309
