title: 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.
authors.affiliation: Department of Materials Science, Fudan University, Shanghai 200433, People's Republic of China.|Department of Light Sources &Illuminating Engineering, School of Information Science &Technology, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Department of Materials Science, Fudan University, Shanghai 200433, People's Republic of China.|School of Information Science &Technology, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Jinxing
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Materials Science, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Shiwei
authors.initials: S
authors.lastname: Tang
authors.affiliation: Department of Materials Science, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Yangfu
authors.initials: Y
authors.lastname: Fang
authors.affiliation: Department of Materials Science, Fudan University, Shanghai 200433, People's Republic of China.|School of Information Science &Technology, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Materials Science, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Gaoshan
authors.initials: G
authors.lastname: Huang
authors.affiliation: School of Information Science &Technology, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Ran
authors.initials: R
authors.lastname: Liu
authors.affiliation: School of Information Science &Technology, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Lirong
authors.initials: L
authors.lastname: Zheng
authors.affiliation: Department of Light Sources &Illuminating Engineering, School of Information Science &Technology, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Xugao
authors.initials: X
authors.lastname: Cui
authors.affiliation: Department of Materials Science, Fudan University, Shanghai 200433, People's Republic of China.
authors.forename: Yongfeng
authors.initials: Y
authors.lastname: Mei