Abstract

The surface plasmon resonance and strong coupling of three layers of metal-coated nanorods are studied in this paper. Numerical results show that an incident electromagnetic wave with a particular frequency can be guided through localized surface plasma resonances to different-sized cavities, realizing excellent absorbance of electromagnetic waves. The refractive index of the surrounding medium also influences the resonant frequency dramatically. Different metal shell thicknesses and materials can be used to effectively adjust the formant frequency. These unique properties of multi-mode resonance and excellent absorbance of electromagnetic waves in a multi-nanorod system have prospective applications in the fields of plasmon resonant sensors, resonators.

Graphical abstract

中文翻译：

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基于多金属包覆纳米棒的多模等离子体共振器

摘要

本文研究了三层金属包覆纳米棒的表面等离子体共振和强耦合。数值结果表明，可以通过局部表面等离子体共振将特定频率的入射电磁波引导至不同大小的空腔，从而实现出色的电磁波吸收。周围介质的折射率也会显着影响共振频率。可以使用不同的金属壳厚度和材料来有效地调节共振峰频率。在多纳诺德系统中，多模共振的这些独特特性和出色的电磁波吸收性能在等离振子共振传感器，共振器领域具有前瞻性的应用。

图形概要