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Restoring the physical meaning of metamaterial constitutive parameters

机译:恢复超材料本构参数的物理意义

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Metamaterial homogenization is often based on implicit assumptions inspired by natural material models. However, retrieved permittivity and permeability frequently retain nonphysical values, especially near the metamaterial resonances where most interesting features are expected. We explain here the nature of typical homogenization artifacts, relating them to an inherent form of magnetoelectric coupling associated with the finite phase velocity along metamaterial arrays. Our findings allow restoring the proper definition and physical meaning of local constitutive parameters for metamaterials.
机译:超材料同质化通常基于自然材料模型启发的隐式假设。但是,所获得的介电常数和磁导率通常会保留非物理值,尤其是在超材料共振附近(预计会出现最有趣的特征)。我们在这里解释典型均质伪像的性质,将它们与磁电耦合的固有形式相关联,该固有形式与沿超材料阵列的有限相速度有关。我们的发现允许恢复超材料的局部本构参数的正确定义和物理含义。

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