Fano-like Interference in Self-Assembled Plasmonic Quadrumer Clusters


Jonathan A. Fan, Kui Bao, Chihhui Wu, Jiming Bao, Rizia Bardhan, Naomi J. Halas, Vinothan N. Manoharan, Gennady Shvets, Peter Nordlander, and Federico Capasso. 2010. “Fano-like Interference in Self-Assembled Plasmonic Quadrumer Clusters.” NANO LETTERS, 10, 11, Pp. 4680-4685.
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Assemblies of strongly interacting metallic nanoparticles are the basis for plasmonic nanostructure engineering. We demonstrate that clusters of four identical spherical particles self-assembled into a close-packed asymmetric quadrumer support strong Fano-like interference. This feature is highly sensitive to the polarization of the incident electric held due to orientation-dependent coupling between particles in the cluster. This structure demonstrates how careful design of self-assembled colloidal systems can lead to the creation of new plasmonic modes and the enabling of interference effects in plasmonic systems.
Last updated on 05/23/2020