High-sensitivity long-range surface plasmon resonance sensing assisted by gold nanoring cavity arrays and nanocavity coupling
Xiaojun Luo, Rui Tan, Qiuju Li, Jiaxin Chen, Yalin Xie, Jiayi Peng, Mei Zeng, Minghang Jiang, Caijun Wu, Yi He
Abstract
A long-range surface plasmon resonance substrate, which consists of a gold nanoring cavity array built on a refractive index-symmetric spacer layer and an Au mirror, facilitates much higher RI sensitivity and a narrower FWHM than a conventional SPR substrate.
Topics & Concepts
NanoringSurface plasmon resonanceMaterials sciencePlasmonOptoelectronicsCoupling (piping)Surface plasmonResonance (particle physics)Sensitivity (control systems)Range (aeronautics)Fano resonanceNanotechnologyNanoparticlePhysicsAtomic physicsMetallurgyElectronic engineeringEngineeringComposite materialPlasmonic and Surface Plasmon ResearchGold and Silver Nanoparticles Synthesis and ApplicationsAdvanced biosensing and bioanalysis techniques