Quantitative and sensitive detection of prohibited fish drugs by surface-enhanced Raman scattering
Lin Shi-Chao1, 2, Zhang Xin1, 2, †, Zhao Wei-Chen1, 2, Chen Zhao-Yang2, Du Pan1, 2, Zhao Yong-Mei3, Wu Zheng-Long4, Xu Hai-Jun1, 2, ‡
       

(color online) FE-SEM micrographs of (a) bare cicada wing, and (b) Au/cicada wing, respectively. (c) SERS spectra of R6G solution at different concentrations. The inset is logarithmic quantitative relationship curve of the 1361-cm−1 peak intensities of R6G. (d) SERS spectra of R6G solution from 10−6 M to 10−1 M, with the inset showing the variation trend of the 1361-cm−1 peak intensities. (e) Simulated result of the distribution of the electric field intensity on x–z plane. (f) Simulated result of the distribution of the electric field intensity on x–y plane.