Title :
Superdirective nanoantennas: Theory and experiment
Author :
Krasnok, A.E. ; Filonov, Dmitry S. ; Slobozhanyuk, A.P. ; Simovski, C.R. ; Belov, P.A. ; Kivshar, Yu.S.
Author_Institution :
Mech. & Opt., Nat. Res. Univ. of Inf. Technol., St. Petersburg, Russia
Abstract :
We introduce a novel concept of superdirective nanoantennas based on the generation of higherorder optically-induced magnetic multipoles. Such an all-dielectric nanoantenna can be realized as an optically small spherical dielectric nanoparticle with a notch excited by a point source located in the notch. We also confirm the predicted superdirectivity effect experimentally through scaling to the microwave frequency range.
Keywords :
antenna radiation patterns; directive antennas; microwave antennas; nanoparticles; nanotechnology; all-dielectric nanoantenna; higherorder optically-induced magnetic multipoles; microwave frequency range; spherical dielectric nanoparticle; superdirective nanoantennas; superdirectivity effect; Lead; Magnetic moments; Yagi-Uda antennas;
Conference_Titel :
Applied Electromagnetics and Communications (ICECom), 2013 21st International Conference on
Conference_Location :
Dubrovnik
Print_ISBN :
978-953-6037-65-0
DOI :
10.1109/ICECom.2013.6684721
