Combination of inverted pyramidal nanovoid with silver nanoparticles to obtain further enhancement and its detection for ricin
| Autor: | Xiaoxuan Xu, Bin Wang, Yuxia Wang, Yufang Wang, Junhua Wu, Meng Wang, Shixuan Wu, Cunzhou Zhang, Li Haoyu, Zhaoqing Guo, Peiyuan Jia, Tingke Guo |
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| Rok vydání: | 2015 |
| Předmět: |
Finite element method
Ricin toxin 73.20.Mf 74.25.nd 81.07.-b Materials science Nano Express Combined substrate Nanochemistry Substrate (chemistry) Nanoparticle Nanotechnology Electrostatic induction Condensed Matter Physics Silver nanoparticle symbols.namesake Materials Science(all) Electric field symbols Surface-enhanced Raman scattering General Materials Science Raman spectroscopy Raman scattering |
| Zdroj: | Nanoscale Research Letters |
| ISSN: | 1556-276X 1931-7573 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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