Peculiar Properties of Loop Nanoantennas

Author

Locatelli, Arturo

Author_Institution

Dipt. di Ing. dell´Inf., Univ. degli Studi di Brescia, Brescia, Italy

Volume

3

Issue

5

fYear

2011

Firstpage

845

Lastpage

853

Abstract

The distinguishing features of circular loop nanoantennas based on cylindrical nanorods are thoroughly investigated by using numerical simulations. In particular, resonances of the input impedance are related to the resonant behavior of the plasmonic mode of the straight nanowire, and the phenomena of strong field confinement into a small gap region and tuning of the scattering strength are analyzed in detail. Moreover, radiation pattern and polarization properties of loop nanoantennas are described, and a careful comparison with the characteristics of optical dipoles is carried out. Circuit models are widely used throughout this paper to predict and justify the behavior of the nanostructure.

Keywords

antenna radiation patterns; loop antennas; nanophotonics; numerical analysis; circuit models; circular loop nanoantennas; cylindrical nanorods; numerical simulations; optical dipoles; plasmonic mode; polarization properties; radiation pattern; resonant behavior; scattering strength; small gap region; straight nanowire; strong field confinement; Antennas; Impedance; Integrated circuit modeling; Optical resonators; Plasmons; Radio frequency; Resonant frequency; Nanoantennas; integrated nanophotonic systems; optical interconnects; plasmonics;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2011.2167603

Filename

6017082