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Circular Magnetoplasmonic Modes in Gold Nanoparticles
journal contribution
posted on 2016-02-18, 17:05 authored by Francesco Pineider, Giulio Campo, Valentina Bonanni, César de Julián
Fernández, Giovanni Mattei, Andrea Caneschi, Dante Gatteschi, Claudio SangregorioThe quest for efficient ways of modulating localized surface plasmon
resonance is one of the frontiers in current research in plasmonics;
the use of a magnetic field as a source of modulation is among the
most promising candidates for active plasmonics. Here we report the
observation of magnetoplasmonic modes on colloidal gold nanoparticles
detected by means of magnetic circular dichroism (MCD) spectroscopy
and provide a model that is able to rationalize and reproduce the
experiment with unprecedented qualitative and quantitative accuracy.
We believe that the steep slope observed at the plasmon resonance
in the MCD spectrum can be very efficient in detecting changes in
the refractive index of the surrounding medium, and we give a simple
proof of principle of its possible implementation for magnetoplasmonic
refractometric sensing.
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modulatinggold nanoparticlessurface plasmon resonanceplasmon resonancedichroismMCD spectrumcandidatefrontierimplementationresearchsourceexperimentCircular Magnetoplasmonic Modesmediummodulationmagnetoplasmonic refractometricprinciplemagnetoplasmonic modesGold NanoparticlesThe questspectroscopymodelaccuracyproof
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