Strategy for designing broadband epsilon-near-zero metamaterial with loss compensation by gain media
Publication in refereed journal

香港中文大學研究人員

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摘要A strategy is proposed to design the broadband gain-doped epsilon-near-zero (GENZ) metamaterial. Based on the Milton representation of effective permittivity, the strategy starts in a dimensionless spectral space, where the effective permittivity of GENZ metamaterial is simply determined by a pole-zero structure corresponding to the operating frequency range. The physical structure of GENZ metamaterial is retrieved from the pole-zero structure via a tractable inverse problem. The strategy is of great advantage in practical applications and also theoretically reveals the cancellation mechanism of the broadband near-zero permittivity phenomenon in the spectral space. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4730380]
著者Sun L, Yu KW
期刊名稱Applied Physics Letters
出版年份2012
月份6
日期25
卷號100
期次26
出版社AIP Publishing
國際標準期刊號0003-6951
電子國際標準期刊號1077-3118
語言英式英語
Web of Science 學科類別Physics; Physics, Applied; PHYSICS, APPLIED

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