Hybrid states of propagating and localized surface plasmons at silver core/silica shell nanocubes on a thin silver layer

作者：Yun Hansik; Lee Seung Yeol; Kim Kyoung Youm; Lee Il Min; Lee Byoungho^*

来源：Optics Express, 2014, 22(7): 8383-8395.

DOI：10.1364/OE.22.008383

Hybrid characteristics of propagating surface plasmons (PSPs) and localized surface plasmons (LSPs) appear at a combined structure of a thin silver (Ag) layer and silver core/silica shell nanocubes (AgNC@SiO(2)s) in the Kretschmann configuration, because the resonant condition of PSPs on the thin Ag layer is significantly modified by LSPs of the AgNC@SiO(2)s. We investigate theoretically and experimentally that due to the hybrid property, the slope and position of the minimum reflectance band can be controlled on a graph of incident angle versus wavelength of reflected light, by changing structural parameters. The hybrid properties of PSPs and LSPs have a potential to simultaneously detect surface plasmon resonance signals and fluorescence images.

• 出版日期2014-4-7