期刊
SCIENTIFIC REPORTS
卷 6, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep22027
关键词
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资金
- National Program of Key Basic Research Project of China (973 Program) [2014CB339806]
- Major National Development Project of Scientific Instrument and Equipment [2011YQ150021, 2012YQ14000504]
- National Natural Science Foundation of China [61138001, 61205094, 61307126, 61377111]
- Shanghai Rising-Star Program [14QA1403100]
- Program of Shanghai Subject Chief Scientist [14XD1403000]
- Hujiang Foundation of China [C14002]
- Zhejiang Key Discipline of Instrument Science and Technology [JL150505]
- China Scholarship Council Fund [201508310049]
- New Century Excellent Talents Project from Ministry of Education [NCET-12-1052]
We experimentally observe the excitation of dark multipolar spoof localized surface plasmon resonances in a hybrid structure consisting of a corrugated metallic disk coupled with a C-shaped dipole resonator. The uncoupled corrugated metallic disk only supports a dipolar resonance in the transmission spectrum due to perfect symmetry of the structure. However, the dark multipolar spoof localized surface plasmon resonances emerge when coupled with a bright C-shaped resonator which is placed in the vicinity of the corrugated metallic disk. These excited multipolar resonances show minimum influence on the coupling distance between the C-shaped resonator and corrugated metallic disk. The resonance frequencies of the radiative modes are controlled by varying the angle of the C-shaped resonator and the inner disk radius, both of which play dominant roles in the excitation of the spoof localized surface plasmons. Observation of such a transition from the dark to radiative nature of multipolar spoof localized plasmon resonances would find potential applications in terahertz based resonant plasmonic and metamaterial devices.
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