We present the analytical solution of multiple core-shell nanoparticles using the multiple scattering theory. Plasmonic resonance from two and three core-shell nanoparticles is investigated to understand the optical properties of multiple core-shell nanoparticles. It is shown that the optical properties can be tuned either by changing the distance between core-shell nanoparticle or by changing their core-to-shell ratio. If the distance of two core-shell nanoparticle increases, the particles respond like two isolated core-shell nanoparticle, and if the distance decreases they show stronger resonance. We also demonstrate that the relative position of multiple core-shell nanoparticles plays a vital role for the enhancement of field intensity. The results provide a fast approach to analytically probe the tunable optical properties that solid single or multiple metal nanoparticles can demonstrate. We have validated our results using finite element method.
Mohammad Habibur Rahaman,
Brandon A. Kemp,
"Analytical model of plasmonic resonance from multiple core-shell nanoparticles," Optical Engineering 56(12), 121903 (23 February 2017). https://doi.org/10.1117/1.OE.56.12.121903
. Submission: Received: 23 September 2016; Accepted: 3 February 2017
Received: 23 September 2016; Accepted: 3 February 2017; Published: 23 February 2017