Surface Lattice Resonances in Self-Templated Plasmonic Honeycomb and Moiré Lattices,Advanced Materials Interfaces

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Surface Lattice Resonances in Self-Templated Plasmonic Honeycomb and Moiré Lattices
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2021-06-14 , DOI: 10.1002/admi.202100317
Kirsten Volk ₁ , Tobias Honold ₁ , Déborah Feller ₁ , Matthias Karg ₁

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Surface lattice resonances appear in periodic plasmonic nanoparticle arrays due to the hybridization of plasmonic and photonic modes. Compared to localized surface plasmon resonances of single particles, these coupled modes feature reduced linewidth, angle-dependent dispersion, and long-range collectivity. Here, the optical response of self-assembled plasmonic monolayers of periodically arranged gold and silver nanoparticles is studied. In comparison to already established hexagonal lattices, self-templated honeycomb and Moiré type lattices as well as their binary counterparts that include silver and gold nanoparticles in the same monolayer are looked at. All periodic arrays feature macroscopic dimensions (cm-scale) and support surface lattice resonances as evidenced from classical extinction measurements. The experimental findings are supported by results from finite difference time domain simulations. Variation of the plasmonic material, the lattice spacing, and geometry enables spectral tunability of the optical response of the lattices.

中文翻译：

自模板等离子体蜂窝和莫尔晶格中的表面晶格共振

由于等离子体和光子模式的杂交，表面晶格共振出现在周期性等离子体纳米粒子阵列中。与单个粒子的局部表面等离子体共振相比，这些耦合模式的特点是线宽减小、角度相关色散和远程集体性。在这里，研究了周期性排列的金和银纳米粒子的自组装等离子体单层的光学响应。与已经建立的六边形晶格相比，自模板蜂窝和莫尔型晶格以及它们的二元对应物在同一单层中包括银和金纳米粒子。所有周期性阵列都具有宏观尺寸（厘米级）并支持表面晶格共振，如经典消光测量所证明的那样。有限差分时域模拟的结果支持了实验结果。等离子体材料、晶格间距和几何形状的变化能够实现晶格光学响应的光谱可调性。

更新日期：2021-07-09

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