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All-dielectric optical nanoantennas

Krasnok, Alexander E.; Miroshnichenko, Andrey E.; Belov, Pavel A.; Kivshar, Yuri S.


We study in detail a novel type of optical nanoantennas made of high-permittivity low-loss dielectric particles. In addition to the electric resonances, the dielectric particles exhibit very strong magnetic resonances at the nanoscale, that can be employed in the Yagi-Uda geometry for creating highly efficient optical nanoantennas. By comparing plasmonic and dielectric nanoantennas, we demonstrate that all-dielectric nanoantennas may exhibit better radiation efficiency also allowing more...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Optics Express
DOI: 10.1364/OE.20.020599


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