Optimization of sensitivity and electric field enhancement for bowtie nanoring nanoantenna arrays
Journal
JSAP-OSA Joint Symposium 2014 (The 75th JSAP Autumn Meeting 2014)
ISBN
978-4-86348-443-6
Date Issued
2014
Author(s)
Abstract
The resonant oscillation of the conduction electrons excited by light interacting with a sub-wavelength metallic nanostructure is called localized surface plasmon resonance (LSPR). It has been shown that a large electromagnetic field can be excited in the gap of a bowtie-shaped nanoantenna [1]. Also, investigations of nanoring structures have exhibited better electric field enhancement and sensitivity compared to solid nanodisk structures [2]. However, there are few reports on the advantages of combining the great electromagnetic field enhancement produced in the bow-tie-shaped antenna gap with the enhanced sensitivity characteristic of the nanoring structure. The purpose of the present work is to perform numerical studies on a model system of bowtie nanoring antenna array to examine the dependence of resonance wavelength, local electromagnetic field enhancement, and sensitivity on the nanohole size inside the bowtie nanoring antenna.
SDGs
Type
conference paper