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Title: Multiple and multipolar Fano resonances in plasmonic nanoring pentamers
Authors: Liu, Hailong
Leong, Eunice Sok Ping
Wang, Zilong
Si, Guangyuan
Zheng, Longjiang
Liu, Yan Jun
Soci, Cesare
Keywords: DRNTU::Engineering
Issue Date: 2013
Source: Liu, H., Leong, E. S. P., Wang, Z., Si, G., Zheng, L., Liu, Y. J., et al. (2013). Multiple and Multipolar Fano Resonances in Plasmonic Nanoring Pentamers. Advanced Optical Materials, 1(12), 978-983.
Series/Report no.: Advanced optical materials
Abstract: The optical properties of plasmonic nanoring pentamers are experimentally and theoretically investigated in the near-infrared spectral region, where the nanoring metamolecules allow complex optical design by tuning a single geometrical parameter (the inner radius of the nanoring). Even in fully four-fold symmetric nanoring pentamers, unconventional plasmonic coupling paths generate multiple Fano resonances which would not appear in symmetric nanodisc oligomers. In addition, inhomogeneous elementary units in the pentamer induce additional resonances due to high-order dark modes, while complete breaking of the four-fold symmetry results in sharp multipolar Fano resonances upon the hybridization of dark and bright modes. This approach demonstrates a simple way to engineer plasmonic couplings by subtle changes of uniform metamaterial design.
ISSN: 2195-1071
DOI: 10.1002/adom.201300393
Rights: © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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