Plasmonic nanocavity enhanced vibration of graphene by a radially polarized optical field
| العنوان: | Plasmonic nanocavity enhanced vibration of graphene by a radially polarized optical field |
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| المؤلفون: | Tingting Zhang, Meijuan Sun, Xiaohu Mi, Hairong Zheng, Chengyun Zhang, Bowen Kang, Xuwei Li, Zhengkun Fu, Zhenglong Zhang |
| المصدر: | Nanophotonics, Vol 9, Iss 7, Pp 2017-2023 (2020) |
| بيانات النشر: | Walter de Gruyter GmbH, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | au nanorod, Materials science, QC1-999, Physics::Optics, 02 engineering and technology, Optical field, 010402 general chemistry, 01 natural sciences, law.invention, Nanomaterials, law, Physics::Atomic and Molecular Clusters, Physics::Chemical Physics, Electrical and Electronic Engineering, radially polarized optical field, Plasmon, Graphene, business.industry, Physics, graphene, 021001 nanoscience & nanotechnology, gap mode, Atomic and Molecular Physics, and Optics, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Gap mode, Vibration, Optoelectronics, plasmonic nanocavity, 0210 nano-technology, business, Biotechnology |
| الوصف: | The combination of 2D materials and surface plasmon can produce some novel optical phenomena that have attracted much attention. Illuminated by light with different polarization states, the field distribution around the plasmonic structure can control the light-matter interaction. The interaction between graphene and light can be strongly enhanced by employing radially polarized beams in a nanocavity. Here, we study the selectively enhanced vibration of graphene in a coupled plasmonic gold nanocavity with a radially polarized optical field, and the coupling and enhancing mechanisms are investigated both experimentally and numerically. By focusing a radially polarized beam, a high z component of a localized near field in the nanocavity is provided to strongly enhance the interaction between graphene and light, which can be used to enhance the vibrational signal of the interlayer. For the in-plane vibration of graphene, a similar enhancement is obtained with a linearly and radially polarized optical field. A plasmonic nanocavity is used to enhance the vibration of graphene, which provides potential applications in studying the out-of-plane vibration mode and exploring the mechanism of the interlayer coupling of 2D materials. |
| تدمد: | 2192-8614 2192-8606 |
| DOI: | 10.1515/nanoph-2019-0553 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80715039fdb779c47023d247bfe8aa9c https://doi.org/10.1515/nanoph-2019-0553 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....80715039fdb779c47023d247bfe8aa9c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21928614 21928606 |
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| DOI: | 10.1515/nanoph-2019-0553 |