Journal
PLASMONICS
Volume 6, Issue 3, Pages 507-514Publisher
SPRINGER
DOI: 10.1007/s11468-011-9229-0
Keywords
Surface plasmon polariton; Metal nanoparticle; Quasicrystal; Localization
Funding
- National Natural Science Foundation of China [10804131, 11074311, 10874250]
- Fundamental Research Funds for the Central Universities [2009300003161450]
- Guangdong Natural Science Foundation [10451027501005073]
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We investigated the plasmonic modes in a two-dimensional quasicrystalline array of metal nanoparticles. The polarization of the modes is in the array plane. A simplified eigen-decomposition method is presented with the help of rotational symmetry. Two kinds of anti-phase ring modes with radial and tangential polarizations are of highest spatial localizations among all of plasmonic modes. For the leaky characteristic of the anti-phase ring modes, the highest fidelity mode in the quasicrystalline array is found to be tangential polarized mode, whereas normal-to-plane polarized mode in the circular ring. The leaky characteristics and spatial localizations of other plasmonic modes are also studied, for example, collective vortex mode that may be a candidate to form negative responses in plasmonic device and collective radial mode that may be used to generate light sources with radial polarizations.
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