Application scope of multipole method for decomposition of plasmonic spectrum
Application scope of multipole method for decomposition of plasmonic spectrum
复制标题
等离激元谱分解多极法的应用范围
DOI：
10.1016/j.rinp.2022.105742
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发表时间：
2022-08-01
影响因子：
5.3
通讯作者：
Li, Kuanguo
中科院分区：
文献类型：
--
作者：
Zhou, Yong;Meng, Yujie;Li, Kuanguo
电磁多极子方法已被广泛采用，以更好地理解局域表面等离子体激元的物理机制。在这项工作中，我们定量分解的总消光光谱的典型银纳米粒子到多极组件，这是显示出很大的不同，从定性分配的共振峰以前报道的。以准简正模方法为参考标准，考察了电磁多极子方法在等离子体共振峰归属中的应用范围，指出了采用本征模方法解释等离子体光谱的必要性，以期对等离子体现象的物理机制有更多的了解。
The electromagnetic multipole method has been extensively adopted for a better understanding of the physical mechanism of localized surface plasmon. In this work, we quantitatively decomposed the total extinction spectra of typical silver nanoparticles into multipole components, which are shown to be quite different from qualitative assignment of resonance peaks reported previously. Taking the quasi-normal mode method as reference standard, we examined the scope of application of the electromagnetic multipole method in assigning plasmonic resonance peaks, and pointed out the necessity of employing eigenmode-based approaches when interpreting plasmonic spectra, which can hopefully lead to more physical insights into the underlying mechanisms of plasmonics phenomena.