纳米层状超材料有效介质响应中的非局部效应
Non-local effects in effective medium response of nano-layered meta-materials
摘要：
我们分析了多层纳米复合材料中的电磁模式，并证明了大多数现实分层结构的响应受到来自整个系统的强场振荡的非局部效应的强烈影响，并且不由传统的有效介质理论描述。我们发展了相关现象的分析描述，并证实了我们的结果与麦克斯韦方程组的数值解。最后，我们使用开发的形式主义，以证明多层等离子体纳米结构支持高指数体积模式，仅限于深亚波长区域，在纳米级光管理中打开了广泛的应用。
英文摘要：
We analyze electromagnetic modes in multi-layered nano-composites and demonstrate that the response of a majority of realistic layered structures is strongly affected by the non-local effects originating from strong field oscillations across the system, and is not described by conventional effective-medium theories. We develop the analytical description of the relevant phenomena and confirm our results with numerical solutions of Maxwell equations. Finally, we use the developed formalism to demonstrate that multi-layered plasmonic nanostructures support high-index volume modes, confined to deep subwavelength areas, opening a wide class of applications in nanoscale light management.
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