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Title: Study on the variation in dielectric properties of heterogeneous substrates composed of nanomaterials
Authors: Njoku, Chinwe C.
Whittow, W.G.
Vardaxoglou, J.C.
Issue Date: 2011
Publisher: IEEE (© EurAAP)
Citation: NJOKU, C.C., WHITTOW, W.G. and VARDAXOGLOU, Y.C., 2011. Study on the variation in dielectric properties of heterogeneous substrates composed of nanomaterials. IN: Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP 2011), Rome, Italy, 11-15 April, pp. 488 - 492.
Abstract: An analytical study of heterogeneous substrates created by including small particles arranged in a cubic lattice within a host medium is presented in this paper. Rapid advances in nanomaterial fabrication techniques will allow in the near future, heterogeneous samples to be created with nano or microsized inclusions, and this paper investigates the electromagnetic (EM) properties of these structures. Analytical equations by various authors for the effective permittivity and permeability of such artificial materials have been analysed and compared over microwave frequencies. The particle size, spacing and frequency were examined individually to understand their role in determining the effective EM parameters of the heterogeneous mixture. Furthermore, results from FDTD simulations with micro-sized cuboids were processed using an inverse scattering algorithm to obtain the effective permittivity and permeability of these heterogenous structures using a complimentary technique. The canonical formulations showed reasonable agreement with the EM simulations and the two methods can be used to design novel dielectric substrates.
Description: This is a conference paper. It is also available at: http://ieeexplore.ieee.org/. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Version: Accepted for publication
URI: https://dspace.lboro.ac.uk/2134/10015
Publisher Link: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5782472
Appears in Collections:Conference Papers and Presentations (Mechanical, Electrical and Manufacturing Engineering)

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