Nonlinear properties of negative-permittivity microwave plasmas embedded in metamaterial of macroscopic negative permeability
Nonlinear properties of negative-permittivity microwave plasmas embedded in metamaterial of macroscopic negative permeability
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DOI：
10.1088/0963-0252/23/6/064009
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发表时间：
2014-12
影响因子：
3.8
通讯作者：
Yoshihiro Nakamura;A. Iwai;O. Sakai
中科院分区：
文献类型：
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作者：
Yoshihiro Nakamura;A. Iwai;O. Sakai
微波范围内的等离子体超材料具有非线性特性，这是由等离子体和超材料的综合效应产生的。分析模型描述了当超材料的磁导率为负时等离子体的双稳定性和负介电常数的分岔。实验结果显示了同一实验装置中非线性的两个重要特性：介电常数的分岔和谐波的产生。这些结果表明等离子体超材料不仅可以用作可变微波器件，而且可以用作具有双负系统的非线性介质。
Plasma metamaterials at microwave ranges have nonlinear properties which arise from synthesized effects of plasma and metamaterial. An analytical model describes bistability and bifurcations of negative permittivity of the plasma when the permeability of the metamaterial is negative. Experimental results show two significant properties of nonlinearity in the same experimental apparatus: bifurcations of the permittivity and harmonic wave generation. These results indicate that plasma metamaterials work not only as variable microwave devices but also as nonlinear media with a double negative system.