Memoirs of the Faculty of Engineering, Okayama University
Published by Faculty of Enginerring, Okayama University

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Memoirs of the School of Engineering, Okayama University

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Dispersion Models and Electromagnetic FDTD Analyses ofNanostructured Metamaterials using Parallel Computer

Umeda Ryosuke Graduate School of Natural Science and Technology Okayama University
東辻 千枝子 Graduate School of Natural Science and Technology Okayama University
鶴田 健二 Graduate School of Natural Science and Technology Okayama University ORCID Kaken ID publons researchmap
東辻 浩夫 Graduate School of Natural Science and Technology Okayama University
抄録
Metamaterial which has negative permittivity and permeability is investigated via computer simulations. Effects of the nanostructure on dielectric and magnetic properties of the material are taken into account by introducing the Drude-Lorentz model in the materials dispersion. We include multi-band process in the dielectric response in order to reproduce accurately experimental values of bulk Au thin film. Size effect on the dispersion is examined by comparing the model with that of a noble metal particle. Based on the dispersion model constructed, we analyze the electromagnetic response of nanostructured metamaterials to evanescent waves at microwave and optical frequencies via finite-difference time-domain simulatioins on parallel computer. A re- focusing and an amplification of the evanescent waves propagating through a metamaterial, consisting of metal slab/vacuum stacking, is demonstrated for the frequencies of 30GHz and 744THz.
ISSN
1349-6115
NCID
AA12014085
NAID