Plasmonic Honeycomb Nanoantenna Array with Broadband Spectral Response and Unidirectional Radiation Pattern for Electromagnetic Field Enhancement at Optical Regime
Nanoparticles and artificial structures composed of special arrangement of nanoparticles are one of the most fascinating fields for the scientists and engineers due to their unique optical properties. Among these nanosystems, plasmonic nanoparticles of different shapes have recently attracted significant interest due to tunability of their resonances, ability to manipulate light beyond the diffraction limit, and strong electromagnetic fields associated with optical resonances. Two dimensional surface arrangement of plasmonic structures demonstrate many interesting optical properties such as extraordinary transmission through subwavelength hole arrays at optical wavelengths, localization of electromagnetic energy to subwavelength regions, electrically induced transparency at optical regime and negative refractive index metamaterials. These exciting properties of plasmonic nanoparticles and arrangement of nanoparticles for desired optical properties opened up the fields of plasmonics and metamaterials in the quest of materials with improved functionality.
In this talk, I will present “Plasmonic Honeycomb Nanoantenna Array”, a two dimensional plasmonic surface based on the resonances of nano particles which behave as nanoantennas. Plasmonic honeycomb nanoantenna array has been proposed for its ability to enhance electromagnetic field within a broad range of optical frequencies and its unidirectional radiation pattern. These features are emergent needs especially in thin film solar cell applications and make the honeycomb array a good candidate for these applications. I will discuss the basic principles, properties and design procedure of plasmonic honeycomb nanoantenna arrays.