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Whispering-gallery nanocavity plasmon-enhanced Raman spectroscopy.

ABSTRACT: The synergy effect in nature could enable fantastic improvement of functional properties and associated effects. The detection performance of surface-enhanced Raman scattering (SERS) can be highly strengthened under the cooperation with other factors. Here, greatly-enhanced SERS detection is realized based on rolled-up tubular nano-resonators decorated with silver nanoparticles. The synergy effect between whispering-gallery-mode (WGM) and surface plasmon leads to an extra enhancement at the order of 10(5) compared to non-resonant flat SERS substrates, which can be well tuned by altering the diameter of micron- and nanotubes and the excitation laser wavelengths. Such synchronous and coherent coupling between plasmonics and photonics could lead to new principle and design for various sub-wavelength optical devices, e.g. plasmonic waveguides and hyperbolic metamaterials.

SUBMITTER: Zhang J

PROVIDER: S-EPMC4595732 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature

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Whispering-gallery nanocavity plasmon-enhanced Raman spectroscopy.

Zhang Jing J Li Jinxing J Tang Shiwei S Fang Yangfu Y Wang Jiao J Huang Gaoshan G Liu Ran R Zheng Lirong L Cui Xugao X Mei Yongfeng Y

Scientific reports 20151007

The synergy effect in nature could enable fantastic improvement of functional properties and associated effects. The detection performance of surface-enhanced Raman scattering (SERS) can be highly strengthened under the cooperation with other factors. Here, greatly-enhanced SERS detection is realized based on rolled-up tubular nano-resonators decorated with silver nanoparticles. The synergy effect between whispering-gallery-mode (WGM) and surface plasmon leads to an extra enhancement at the orde ...[more]

PMID: 26443526

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