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Título

Real-space mapping of Fano interference in plasmonic metamolecules

AutorAlonso-González, Pablo ; Schnell, Martin; Sarriugarte, P.; Albella, Pablo ; Nordlander, Peter; Hillenbrand, Rainer
Fecha de publicación2011
EditorAmerican Chemical Society
CitaciónNano Letters 11(9): 3922-3926 (2011)
ResumenAn unprecedented control of the spectral response of plasmonic nanoantennas has recently been achieved by designing structures that exhibit Fano resonances. This new insight is paving the way for a variety of applications, such as biochemical sensing and surface-enhanced Raman spectroscopy. Here we use scattering-type near-field optical microscopy to map the spatial field distribution of Fano modes in infrared plasmonic systems. We observe in real space the interference of narrow (dark) and broad (bright) plasmonic resonances, yielding intensity and phase toggling between different portions of the plasmonic metamolecules when either their geometric sizes or the illumination wavelength is varied. © 2011 American Chemical Society.
URIhttp://hdl.handle.net/10261/50786
DOI10.1021/nl2021366
Identificadoresdoi: 10.1021/nl2021366
issn: 1530-6984
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