Unveiling radial breathing mode in a particle-on-mirror plasmonic nanocavity
Plasmonic radial breathing mode (RBM), featured with radially oscillating charge density, arises from the surface plasmon waves confined in the flat nanoparticles. The zero net dipole moment endows the RBM with an extremely low radiation yet a remarkable intense local field. On the other hand, owing...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2022-01-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2021-0506 |
| _version_ | 1828058951209451520 |
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| author | Wang Qifa Li Chenyang Hou Liping Zhang Hanmou Gan Xuetao Liu Kaihui Premaratne Malin Xiao Fajun Zhao Jianlin |
| author_facet | Wang Qifa Li Chenyang Hou Liping Zhang Hanmou Gan Xuetao Liu Kaihui Premaratne Malin Xiao Fajun Zhao Jianlin |
| author_sort | Wang Qifa |
| collection | DOAJ |
| description | Plasmonic radial breathing mode (RBM), featured with radially oscillating charge density, arises from the surface plasmon waves confined in the flat nanoparticles. The zero net dipole moment endows the RBM with an extremely low radiation yet a remarkable intense local field. On the other hand, owing to the dark mode nature, the RBMs routinely escape from the optical measurements, severely preventing their applications in optoelectronics and nanophotonics. Here, we experimentally demonstrate the existence of RBM in a hexagonal Au nanoplate-on-mirror nanocavity using a far-field linear-polarized light source. The polarization-resolved scattering measurements cooperated with the full-wave simulations elucidate that the RBM originates from the standing plasmon waves residing in the Au nanoplate. Further numerical analysis shows the RBM possesses the remarkable capability of local field enhancement over the other dark modes in the same nanocavity. Moreover, the RBM is sensitive to the gap and nanoplate size of the nanocavity, providing a straightforward way to tailor the wavelength of RBM from the visible to near-infrared region. Our approach provides a facile optical path to access to the plasmonic RBMs and may open up a new route to explore the intriguing applications of RBM, including surface-enhanced Raman scattering, enhanced nonlinear effects, nanolasers, biological and chemical sensing. |
| first_indexed | 2024-04-10T21:34:32Z |
| format | Article |
| id | doaj.art-211f7ed2b10d4e55a04f33e0351326e8 |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-04-10T21:34:32Z |
| publishDate | 2022-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-211f7ed2b10d4e55a04f33e0351326e82023-01-19T12:46:58ZengDe GruyterNanophotonics2192-86142022-01-0111348749410.1515/nanoph-2021-0506Unveiling radial breathing mode in a particle-on-mirror plasmonic nanocavityWang Qifa0Li Chenyang1Hou Liping2Zhang Hanmou3Gan Xuetao4Liu Kaihui5Premaratne Malin6Xiao Fajun7Zhao Jianlin8Key Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, ChinaKey Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, ChinaKey Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, ChinaKey Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, ChinaKey Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, ChinaState Key Laboratory for Mesoscopic Physics, Collaborative Innovation Centre of Quantum Matter, School of Physics, Peking University, Beijing 100871, ChinaAdvanced Computing and Simulation Laboratory (AχL), Department of Electrical and Computer Systems Engineering, Monash University, Clayton, Victoria 3800, AustraliaKey Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, ChinaKey Laboratory of Light Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, ChinaPlasmonic radial breathing mode (RBM), featured with radially oscillating charge density, arises from the surface plasmon waves confined in the flat nanoparticles. The zero net dipole moment endows the RBM with an extremely low radiation yet a remarkable intense local field. On the other hand, owing to the dark mode nature, the RBMs routinely escape from the optical measurements, severely preventing their applications in optoelectronics and nanophotonics. Here, we experimentally demonstrate the existence of RBM in a hexagonal Au nanoplate-on-mirror nanocavity using a far-field linear-polarized light source. The polarization-resolved scattering measurements cooperated with the full-wave simulations elucidate that the RBM originates from the standing plasmon waves residing in the Au nanoplate. Further numerical analysis shows the RBM possesses the remarkable capability of local field enhancement over the other dark modes in the same nanocavity. Moreover, the RBM is sensitive to the gap and nanoplate size of the nanocavity, providing a straightforward way to tailor the wavelength of RBM from the visible to near-infrared region. Our approach provides a facile optical path to access to the plasmonic RBMs and may open up a new route to explore the intriguing applications of RBM, including surface-enhanced Raman scattering, enhanced nonlinear effects, nanolasers, biological and chemical sensing.https://doi.org/10.1515/nanoph-2021-0506dark modenanoparticlesplasmonic nanocavityradial breathing mode |
| spellingShingle | Wang Qifa Li Chenyang Hou Liping Zhang Hanmou Gan Xuetao Liu Kaihui Premaratne Malin Xiao Fajun Zhao Jianlin Unveiling radial breathing mode in a particle-on-mirror plasmonic nanocavity Nanophotonics dark mode nanoparticles plasmonic nanocavity radial breathing mode |
| title | Unveiling radial breathing mode in a particle-on-mirror plasmonic nanocavity |
| title_full | Unveiling radial breathing mode in a particle-on-mirror plasmonic nanocavity |
| title_fullStr | Unveiling radial breathing mode in a particle-on-mirror plasmonic nanocavity |
| title_full_unstemmed | Unveiling radial breathing mode in a particle-on-mirror plasmonic nanocavity |
| title_short | Unveiling radial breathing mode in a particle-on-mirror plasmonic nanocavity |
| title_sort | unveiling radial breathing mode in a particle on mirror plasmonic nanocavity |
| topic | dark mode nanoparticles plasmonic nanocavity radial breathing mode |
| url | https://doi.org/10.1515/nanoph-2021-0506 |
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