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Stacked optical antennas for plasmon propagation in a 5 nm-confined cavity.

ABSTRACT: The sub-wavelength concentration and propagation of electromagnetic energy are two complementary aspects of plasmonics that are not necessarily co-present in a single nanosystem. Here we exploit the strong nanofocusing properties of stacked optical antennas in order to highly concentrate the electromagnetic energy into a 5 nm metal-insulator-metal (MIM) cavity and convert free radiation into guided modes. The proposed nano-architecture combines the concentration properties of optical nanoantennas with the propagation capability of MIM systems, paving the way to highly miniaturized on-chip plasmonic waveguiding.

SUBMITTER: Saeed A 

PROVIDER: S-EPMC4460891 | biostudies-other | 2015

REPOSITORIES: biostudies-other

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Stacked optical antennas for plasmon propagation in a 5 nm-confined cavity.

Saeed A A   Panaro S S   Zaccaria R Proietti RP   Raja W W   Liberale C C   Dipalo M M   Messina G C GC   Wang H H   De Angelis F F   Toma A A  

Scientific reports 20150609

The sub-wavelength concentration and propagation of electromagnetic energy are two complementary aspects of plasmonics that are not necessarily co-present in a single nanosystem. Here we exploit the strong nanofocusing properties of stacked optical antennas in order to highly concentrate the electromagnetic energy into a 5 nm metal-insulator-metal (MIM) cavity and convert free radiation into guided modes. The proposed nano-architecture combines the concentration properties of optical nanoantenna  ...[more]