Nano-antenna for optical resolution using plasmonic material as substrate

Author

Dhiman, Ratish K. ; Tiwari, Rakesh N. ; Kumar, Pradeep ; Singh, G. ; Chauhan, D.S.

Author_Institution

Dept. of Electron. & Commun. Eng, Jaypee Univ. of Inf. Technol., Solan

fYear

2008

fDate

15-19 Sept. 2008

Firstpage

1

Lastpage

2

Abstract

In this paper, the concept to enhanced directivity of a electrically small subwavelength radiator containing plasmonic materials with negative permittivity at THz, infrared and optical frequencies have been explored theoretically. We study plasmonic resonances of a subwavelength core-shell spherical nanoantenna and simulate the far-field radiation patterns of such a structure when it is excited by a small dipole source. The size, shape and material of the nanoantenna determine the antenna response.

Keywords

antenna radiation patterns; antennas; nanostructured materials; plasmonics; surface plasmons; electrically small subwavelength radiator; enhanced directivity; far-field radiation pattern; negative permittivity; plasmonic material; plasmonic resonances; subwavelength core-shell spherical nanoantenna; Apertures; Bandwidth; Dipole antennas; Frequency; Gold; Nanoscale devices; Optical materials; Optical sensors; Plasmons; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on

Conference_Location

Pasadena, CA

Print_ISBN

978-1-4244-2119-0

Electronic_ISBN

978-1-4244-2120-6

Type

conf

DOI

10.1109/ICIMW.2008.4665809

Filename

4665809