Broadband electromagnetic transparency by graded metamaterials: scattering cancellation scheme
Publication in refereed journal

香港中文大學研究人員

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摘要The electromagnetic scattering by a radially inhomogeneous isotropic metamaterial sphere whose electric permittivity is described by the lossless graded Drude model is studied according to the generalized Mie theory in full-wave condition. The distribution of electromagnetic field is calculated by solving Maxwell's equations, and the exact analytic solutions are obtained in terms of confluent Heun and hypergeometry functions. This allows us to achieve the full-wave scattering cross section (SCS) analytically. The corresponding numerical analysis indicates that the full-wave SCS can be extremely small over a broad frequency band, representing a broadband electromagnetic transparency. Moreover, the analytic expression of the full-wave SCS also reveals the conditions for achieving the broadband electromagnetic transparency and makes tunable electromagnetic transparency feasible. (C) 2011 Optical Society of America
著者Sun L, Yu KW
期刊名稱Journal of the Optical Society of America B
出版年份2011
月份5
日期1
卷號28
期次5
出版社OPTICAL SOC AMER
頁次994 - 1001
國際標準期刊號0740-3224
語言英式英語
Web of Science 學科類別Optics; OPTICS

上次更新時間 2021-19-02 於 23:16