Au Nanohole–Nanodisk Hybrid Array for Plasmonic Sensing,Physica Status Solidi-Rapid Research Letters

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Au Nanohole–Nanodisk Hybrid Array for Plasmonic Sensing
Physica Status Solidi-Rapid Research Letters ( IF 2.5 ) Pub Date : 2020-08-26 , DOI: 10.1002/pssr.202000358
Jung-Sub Wi ₁ , Hee-Kyung Na ₂

Affiliation

The phenomenon of extraordinary light transmission through sub‐wavelength‐sized holes in noble metal films has attracted significant attention due to its potential applications in optical filters and plasmonic sensors. Herein, an Au nanohole–nanodisk hybrid array, which allows controllable extraordinary light transmission, is presented to detect the target analytes. A 3D electromagnetic simulation proves that the proposed plasmonic nanostructure array with its constant geometry can vary the light transmittance by altering the refractive index of the surrounding medium. As the refractive‐index‐dependent plasmon coupling between the Au nanohole and nanodisk can drastically enhance the light transmission, the Au nanohole–nanodisk hybrid array can be utilized as a sensitive and feasible plasmonic sensor.

中文翻译：

用于等离子体传感的金纳米孔-纳米盘混合阵列

由于其在光学滤波器和等离子传感器中的潜在应用，通过贵金属膜中亚波长尺寸的孔的超常光传输现象引起了广泛的关注。在此，提出了一种可控制非凡光传输的Au纳米孔-纳米盘混合阵列，以检测目标分析物。3D电磁仿真证明，所提出的等离子纳米结构阵列具有恒定的几何形状，可以通过改变周围介质的折射率来改变光透射率。由于Au纳米孔和纳米盘之间依赖于折射率的等离激元耦合可以大大增强光的透射，因此Au纳米孔-纳米盘混合阵列可以用作灵敏且可行的等离激元传感器。

更新日期：2020-11-02

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