Abstract
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.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant Nos. 11574207, 61975253), and the Shanghai Natural Science Foundation (Grant No. 18ZR1421600). Device fabrication was supported by the Center for Advanced Electronic Materials and Devices of Shanghai Jiao Tong University.
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Wang, X. The tunable optical properties and characterization of plasmon mode of single nanoparticle-plane antenna. Opt Quant Electron 52, 283 (2020). https://doi.org/10.1007/s11082-020-02411-8
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DOI: https://doi.org/10.1007/s11082-020-02411-8