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Updated: May 30, 2026

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Published on: July 21, 2018
Controlling the interplay of electric and magnetic modes via Fano-like plasmon resonances
Sassan N Sheikholeslami1, Aitzol García-Etxarri, Jennifer A Dionne
1Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States.
Abstract:
Assemblies of strongly coupled plasmonic nanoparticles can support highly tunable electric and magnetic resonances in the visible spectrum. In this Letter, we theoretically demonstrate Fano-like interference effects between the fields radiated by the electric and magnetic modes of symmetric nanoparticle trimers. Breaking the symmetry of the trimer system leads to a strong interaction between the modes. The near and far-field electromagnetic properties of the broken symmetry trimer are tunable across a large spectral range. We exploit this Fano-like effect to demonstrate spatial and temporal control of the localized electromagnetic hotspots in the plasmonic trimer.
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