CUED Publications database

Fem modeling of periodic arrays of multi-walled carbon nanotubes

Butt, H and Wilkinson, TD and Amaratunga, GAJ (2011) Fem modeling of periodic arrays of multi-walled carbon nanotubes. Progress In Electromagnetics Research M, 22. pp. 1-12. ISSN 1937-8726

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Multiwalled carbon nanotubes display dielectric properties similar to those of graphite, which can be calculated using the well known Drude-Lorentz model. However, most computational softwares lack the capacity to directly incorporate this model into the simulations. We present the finite element modeling of optical propagation through periodic arrays of multiwalled carbon nanotubes. The dielectric function of nanotubes was incorporated into the model by using polynomial curve fitting technique. The computational analysis revealed interesting metamaterial filtering effects displayed by the highly dense square lattice arrays of carbon nanotubes, having lattice constants of the order few hundred nanometers. The curve fitting results for the dielectric function can also be used for simulating other interesting optical applications based on nanotube arrays.

Item Type: Article
Divisions: Div B > Electronics, Power & Energy Conversion
Div B > Photonics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:01
Last Modified: 17 Aug 2017 01:25