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Title: Studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientations
Authors: Wu, Wai M.
Njoku, Chinwe C.
Whittow, W.G.
Zagoskin, Alexandre M.
Kusmartsev, F.V.
Vardaxoglou, J.C.
Keywords: Permittivity
Issue Date: 2014
Publisher: World Scientific (© the authors)
Citation: WU, W.M. ... et al., 2014. Studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientations. Journal of Advanced Dielectrics, 4 (4)
Abstract: In this paper, we investigate the possibility of using the heterogeneous materials, with cuboid metallic inclusions inside a dielectric substrate (host) to control the effective permittivity. We find that in the gigahertz range, such a material demonstrates a significantly larger permittivity compared to the pure dielectric substrate. Three principal orientations of microscale cuboid inclusions have been taken into account in this study. The highest permittivity is observed when the orientation provides the largest polarization (electric dipole moment). The detrimental side effect of the metallic inclusion, which leads to the decrease of the effective magnetic permeability, can be suppressed by the proper choice of shape and orientation of the inclusions. This choice can in fact reduce the induced current and hence maximize the permeability. The dissipative losses are shown to be negligible in the relevant range of frequencies and cuboid dimensions.
Sponsor: This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) (Grant No.: EP/101490X/1)
Version: Published
DOI: 10.1142/S2010135X14500325
URI: https://dspace.lboro.ac.uk/2134/17925
Publisher Link: http://dx.doi.org/10.1142/S2010135X14500325
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)
Published Articles (Physics)

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