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Analysis of plasmonic effects in silicon nanoholes

机译：硅纳米孔中的等离子体效应分析

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摘要

A theoretical analysis of plasmonic effects in a crystalline silicon-filled metallic nanohole is introduced. The dispersion properties of the guided modes of the silicon-filled silver nanohole are shown to have interesting characteristics such as negative dispersion, which is not normally observed in air-filled structures. Furthermore, the dispersion of the crystalline silicon material itself, when taken into consideration, significantly alters the dispersion characteristics of the guided modes. More interestingly, crystalline silicon is found to show metal-like properties at the edge of the UV/VIS spectrum; therefore, it is demonstrated that a silicon nanolayer surrounded by air is able to support surface plasmon polariton modes. The analysis is carried out using a full vectorial finite element method which can accurately detect the propagation properties of the structure under investigation.
机译：介绍了晶体硅填充金属纳米孔中的等离激元效应的理论分析。硅填充的银纳米孔的导模的色散特性显示出具有令人关注的特性，例如负色散，这在空气填充结构中通常不会观察到。此外，当考虑到晶体硅材料本身的色散时，显着改变了引导模的色散特性。更有趣的是，发现结晶硅在UV / VIS光谱的边缘显示出类似金属的特性；因此，证明了被空气包围的硅纳米层能够支持表面等离子体激元极化模式。使用完全矢量有限元方法进行分析，该方法可以准确地检测所研究结构的传播特性。

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