Departmental Papers (ESE)


Inspired by the geometry and shape of the classical radio-frequency radiator, the Hertzian dipole, here we analyze the design of a plasmonic optical dimer nanoantenna. We show how it may be possible to operate a pair of closely spaced spherical nanoparticles as an efficient optical nanoradiator, and how its tuning and matching properties may be tailored with great degree of freedom by designing suitable nanoloads placed at the dimer gap. In this sense, we successfully apply nanocircuit concepts to model the loading nanoparticles. High levels of optical radiation efficiency are achieved, even considering the realistic absorption of optical metals, thanks to this specific geometry and design.

Document Type

Journal Article

Date of this Version

November 2008


Copyright American Physical Society. Reprinted from Physical Review B, Volume 78, Issue 19, November 2008.
Publisher URL:


antennas, nanoelectronics, nanoparticles



Date Posted: 11 December 2008

This document has been peer reviewed.