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还原论视角下的时变超构材料构建与等效媒质理论研究

Wu Hongwei,Chen Xue,Sheng Zongqiang

Journal of HuangHe S&T College（2023）

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Abstract
等效媒质理论是从微观角度出发,根据复合材料的结构特点,研究其宏观意义上材料参数的方法.将空间等效媒质理论推广到时间等效媒质理论,以时变声学超构材料为例,从理论上推导超构材料的材料参数在时间上以高频率调制时,其等效参数形式.基于还原论思想,在COMSOL Multiphysics数值仿真软件中设计时变人工原子进而构建时变超构材料,从数值上验证时间等效媒介公式的正确性,进而扩展等效媒质理论体系.
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Key words
effective medium theory,time-varying metamaterials,numerical simulation
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