Studies of Perm and Permea of Diel Matrix with Cuboid Metallic.pdf (2.46 MB)
Studies of permittivity and permeability of dielectric matrix with cuboid metallic inclusions in different orientations
journal contribution
posted on 2015-06-18, 14:25 authored by Wai M. Wu, Chinwe Njoku, William WhittowWilliam Whittow, Alexandre ZagoskinAlexandre Zagoskin, Feodor Kusmartsev, J. C. VardaxoglouIn 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.
Funding
This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) (Grant No.: EP/101490X/1)
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Journal of Advanced DielectricsVolume
4Issue
4Citation
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)Publisher
World Scientific (© the authors)Version
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/Publication date
2014Publisher version
Language
- en