A theoretical study of a plasmonic sensor comprising a gold nano-disk array on gold film with a SiO<sub><b>2</b></sub> spacer

A theoretical study of a plasmonic sensor comprising a gold nano-disk array on gold film with a SiO₂ spacer

Wang Xiangxian^{1, †}, Zhu Jiankai¹, Tong Huan¹, Yang Xudong¹, Wu Xiaoxiong¹, Pang Zhiyuan¹, Yang Hua¹, Qi Yunping²

(a) The RI sensitivity as a function of nano-disk diameter, where the diameter varies from 200 nm to 360 nm, in step sizes of 20 nm. (b) The FOM as a function of the nano-disk diameter, where the diameter varies from 200 nm to 360 nm, in step sizes of 20 nm.