Title: Tunability of Subradiant Dipolar and Fano-Type Plasmon Resonances in Metallic Ring/Disk Cavities: Implications for Nanoscale Optical Sensing
Authors: Hao, Feng ×
Nordlander, Peter
Sonnefraud, Yannick
Van Dorpe, Pol
Maier, Stefan A #
Issue Date: Mar-2009
Publisher: American Chemical Society
Series Title: ACS Nano vol:3 issue:3 pages:643-652
Abstract: Plasmonic nanocavities consisting of the concentric arrangement of a disk and a ring sustain both subradiant and superradiant dipolar plasmon modes with large associated field enhancements and high refractive index sensitivities. In structures with broken symmetry, additionally a highly tunable Fano interference feature appears, which can be explained with a simple analytical harmonic oscillator model. The spectral tunability of these resonances from the visible to the mid-infrared is investigated, highlighting a potential for applications in surface enhanced spectroscopies.
ISSN: 1936-0851
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Associated Section of ESAT - INSYS, Integrated Systems
× corresponding author
# (joint) last author

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