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Nanostructured Silver Substrates With Stable and Universal SERS Properties: Application to Organic Molecules and Semiconductor Nanoparticles

机译:具有稳定和通用SERS特性的纳米结构银基板:在有机分子和半导体纳米粒子中的应用

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摘要

Nanostructured silver films have been prepared by thermal deposition on silicon, and their properties as SERS substrates investigated. The optimal conditions of the post-growth annealing of the substrates were established. Atomic force microscopy study revealed that the silver films with relatively dense and homogeneous arrays of 60–80-nm high pyramidal nanoislands are the most efficient for SERS of both organic dye and inorganic nanoparticles analytes. The noticeable enhancement of the Raman signal from colloidal nanoparticles with the help of silver island films is reported for the first time.
机译:通过在硅上热沉积制备了纳米结构的银膜,并研究了它们作为SERS衬底的性能。确定了衬底生长后退火的最佳条件。原子力显微镜研究表明,相对密集且均匀排列的60-80 nm高金字塔形纳米岛的银膜对于有机染料和无机纳米颗粒分析物的SERS效率最高。首次报道了借助银岛薄膜使胶态纳米颗粒的拉曼信号显着增强。

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