CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Confined Mie Plasmons in Monolayer Hexagonal-Close-Packed Metallic Nanoshells |
CHEN Jing1, DONG Wen1,2, WANG Qiu-Gu1, TANG Chao-Jun1, CHEN Zhuo1**, WANG Zhen-Lin1 |
1Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 2School of Physical Science and Technology, Soochow University, Suzhou 215006 |
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Cite this article: |
CHEN Jing, DONG Wen, WANG Qiu-Gu et al 2012 Chin. Phys. Lett. 29 097303 |
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Abstract Using a double templating method by electroless deposition within a templating organic porous mold, we fabricate a monolayer of hexagonal-close-packed metallic nanoshells, each with a small opening. Light transmission spectra of the metallic nanoshell arrays are measured, which show transmission resonances at specific wavelengths whose positions are observed to be independent of the incident angle as well as light polarizations. More interestingly, the resonance wavelengths of Mie plasmon modes are also independent of the surrounding medium. Further numerical simulations confirm these transmission resonances and reveal that they are attributed to the excitations of highly localized dipolar, quadrupolar and hexapolar Mie plasmon modes, which are highly confined within metallic nanoshells.
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Received: 15 June 2012
Published: 01 October 2012
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PACS: |
73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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81.16.-c
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(Methods of micro- and nanofabrication and processing)
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