Impact of Propagative Surface Plasmon Polaritons on the Electromagnetic Enhancement by Localized Gap Surface Plasmons Between Metallic Nanoparticles and Substrate

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Journal:Plasmonics

Abstract:The nanoparticle-on-mirror system as a surface-enhanced Raman scattering substrate is sufficient for single molecule detection and possesses advantages of high reproducibility and ease of assembly. In this paper, one single spherical gold nanoparticle (NP) placed on a flat gold substrate with a gap size of 10 nm is firstly studied. Then, two NPs with separations in order of wavelengths is investigated. The enhanced field of the localized gap surface plasmon (LGSP) in the NP-substrate nanogap is analyzed quantitatively with the finite element method.

First Author:Ying Zhong

Indexed by:Other

Volume:12

Issue:6

Page Number:1393–1403

Translation or Not:no

CN No.:null