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首页> 外文期刊>Physical review >Low- Q whispering gallery modes in anisotropic metamaterial shells
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Low- Q whispering gallery modes in anisotropic metamaterial shells

机译：各向异性超材料壳中的低Q耳语画廊模式

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Anisotropic and inhomogeneous metamaterial shells are studied in order to exploit all their resonant mode richness. These multilayer structures are based on a cylindrical distribution of radially dependent constitutive parameters including an inner void cavity. Shell, cavity, and whispering gallery modes are characterized, and special attention is paid to the latter ones. The whispering gallery modes are created at the boundary layers of the shell with the background. Energy localization is produced with highly radiative characteristics when the localization takes place at the external layer. These low- Q resonant states have frequencies that are independent of the shell thickness. However, their quality factors can be controlled by the number of layers forming the shell, which allows confining electromagnetic waves at the interface layers (internal or external), and make them suitable for the harvesting of electromagnetic energy.
机译：对各向异性和非均质的超材料壳进行了研究，以利用其所有共振模式的丰富性。这些多层结构基于包括内部空隙腔在内的径向相关的本构参数的圆柱分布。表征了壳，腔和耳语画廊的模式，并特别注意后者。耳语画廊模式是在外壳与背景的边界层创建的。当定位发生在外层时，会产生具有高度辐射特性的能量定位。这些低Q共振状态的频率与外壳厚度无关。但是，它们的品质因数可以通过形成外壳的层数来控制，这可以将电磁波限制在界面层（内部或外部），并使它们适合于收集电磁能。

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