We propose the tunable optical properties of plasmonic nanoparticle (NP)-plane antenna. In order to choose proper configurations to obtain sensitive and reproducible platform for electromagnetic enhancement in the sub-nanometer junction, the plasmonic resonance of the nanostructure shifts with NP size, gap distance and gap refractive index was simulated. The tunable optical properties of NP-plane antenna make it a good optical sensor in the visible optical range. Then we changed the NP size, gap distance and gap refractive index by fabricating the nanostructure. The experiment and simulation results match with each other. Each plasmon mode in localized surface plasmon resonance was recognized through simulation and also the polarization components in the experiment.

中文翻译：

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单纳米粒子平面天线等离子体模式的可调光学特性及表征

我们提出了等离子体纳米粒子 (NP) 平面天线的可调光学特性。为了选择合适的配置以获得亚纳米结中用于电磁增强的灵敏且可重复的平台，模拟了纳米结构的等离子体共振随 NP 尺寸、间隙距离和间隙折射率的变化。NP 平面天线的可调光学特性使其成为可见光范围内良好的光学传感器。然后我们通过制造纳米结构改变了 NP 尺寸、间隙距离和间隙折射率。实验和仿真结果相互匹配。局部表面等离子体共振中的每个等离子体模式通过模拟以及实验中的偏振分量被识别。