Plasmon Hybridization in Stacked Double Gold Nanorings with Reduced Symmetry

Plasmon Hybridization in Stacked Double Gold Nanorings with Reduced Symmetry

Plasmon hybridization in gold nanorings is investigated experimentally and through finite‐difference time‐domain calculations. A stack composed of a concentric and a non‐concentric nanoring gives rise to hybridized dipolar and multipolar modes with resonances in the near infrared. Symmetry breaking...

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Veröffentlicht in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2008-10, Vol.4 (10), p.1630-1634
Hauptverfasser: Larsson, Elin M., Hao, Feng, Eurenius, Lisa, Olsson, Eva, Nordlander, Peter, Sutherland, Duncan S.
Format: Artikel
Sprache:eng
Schlagworte:
Electricity
gold
Gold - chemistry
nanorings
Nanostructures - chemistry
Nanostructures - ultrastructure
plasmon hybridization
Spectrum Analysis
UV/Vis spectroscopy
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Beschreibung
Zusammenfassung:Plasmon hybridization in gold nanorings is investigated experimentally and through finite‐difference time‐domain calculations. A stack composed of a concentric and a non‐concentric nanoring gives rise to hybridized dipolar and multipolar modes with resonances in the near infrared. Symmetry breaking in the system leads to large electromagnetic field enhancements (>240) and multipolar plasmon excitations not visible in the individual rings are revealed (see image).
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.200800497