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 reflection spectra of the same composite structure with different analyte RI. (b) The position of the resonance wavelength (mode 2) as a function of the RI.