Shaoping Liu, Xiaoming Jiang, Lin Lai, Jiayu Liu, Zhengyuan Zhong, Xiaohan Bo, Qian Xu. Long-Range Detection of Surface-Enhanced Raman Scattering Signal Based on Flat-Plate Waveguide-Gold Nanoparticles Substrate[J]. Laser & Optoelectronics Progress, 2021, 58(23): 2330003
- Laser & Optoelectronics Progress
- Vol. 58, Issue 23, 2330003 (2021)
Fig. 1. Structure and detection principle of polymeric flat-plate waveguide-AuNPs SERS substrate
Fig. 2. Simulation of polymeric flat-plate waveguide-AuNPs SERS substrate structure.(a) 3D structure of substrate; (b) electric field distribution of incident surface; (c) electric field distribution around AuNPs surface
Fig. 3. Raman experimental results for different transmission lengths. (a) Raman spectrum of R6G, inset is a local magnification around wave number 1509 cm-1; (b) intensity diagram at 1509 cm-1, inset is a physical view of long-range detection
Fig. 4. Enhanced Raman spectra of different concentrations of R6G,inset is a partial magnification of 1×10-8, 1×10-7 mol/L R6G's Raman spectra
Fig. 5. Raman spectra of R6G tested ten times. (a) Raman spectra; (b) error bar
Fig. 6. Enhanced and normal Raman signals of R6G
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