title: Combination of inverted pyramidal nanovoid with silver nanoparticles to obtain further enhancement and its detection for ricin.
abstract: We have obtained the surface-enhanced Raman scattering substrate by depositing silver nanoparticles on the surface of the inverted pyramidal nanovoid in order to improve the enhance effects. Experimental results showed that the combined substrate exhibited greater enhancement than the nanovoid substrate or nanoparticles. In order to test the SERS activity of the combined substrates, Rh6G and ricin toxin were used as Raman probes. Finite element method was employed to simulate electric field and induced charge distribution of the substrates, which have been used to explore the interaction between nanoparticles and nanovoid as well as mechanism of the great enhancement.
authors: The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of physics and Teda Applied Physics Institute, Nankai University, Tianjin, 300071 China.
authors: Meng
authors: M
authors: Wang
authors: The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of physics and Teda Applied Physics Institute, Nankai University, Tianjin, 300071 China.
authors: Bin
authors: B
authors: Wang
authors: The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of physics and Teda Applied Physics Institute, Nankai University, Tianjin, 300071 China.
authors: Shixuan
authors: S
authors: Wu
authors: The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of physics and Teda Applied Physics Institute, Nankai University, Tianjin, 300071 China.
authors: Tingke
authors: T
authors: Guo
authors: The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of physics and Teda Applied Physics Institute, Nankai University, Tianjin, 300071 China.
authors: Haoyu
authors: H
authors: Li
authors: The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of physics and Teda Applied Physics Institute, Nankai University, Tianjin, 300071 China.
authors: Zhaoqing
authors: Z
authors: Guo
authors: Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, 100850 China.
authors: Junhua
authors: J
authors: Wu
authors: Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, 100850 China.
authors: Peiyuan
authors: P
authors: Jia
authors: Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, 100850 China.
authors: Yuxia
authors: Y
authors: Wang
authors: The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of physics and Teda Applied Physics Institute, Nankai University, Tianjin, 300071 China.
authors: Xiaoxuan
authors: X
authors: Xu
authors: The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of physics and Teda Applied Physics Institute, Nankai University, Tianjin, 300071 China.
authors: Yufang
authors: Y
authors: Wang
authors: The MOE Key Laboratory of Weak Light Nonlinear Photonics, School of physics and Teda Applied Physics Institute, Nankai University, Tianjin, 300071 China.
authors: Cunzhou
authors: C
authors: Zhang
keywords: Combined substrate; Finite element method; Ricin toxin; Surface-enhanced Raman scattering