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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Metal Nanoparticle-Nanowire Assisted SERS on Film
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Metal Nanoparticle-Nanowire Assisted SERS on Film

机译：薄膜上的金属纳米粒子-纳米线辅助SERS

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摘要

The electromagnetic field redistribution in metal nanostructure film systems exhibits great capability of confining light on plain film, which has great significance in surface-enhanced Raman scattering (SERS) of a molecule on plain film or 2D material. In this work, the SERS spectra of a monolayer molecule on metal or dielectric film were investigated with the help of a metal nanoparticle nanowire structure. The results indicated that SERS intensity from an adjacent nanopartide was much greater than that from an individual nanowire, which was confirmed by the simulated electric field distribution through finite method. The polarization dependence of both experimental and simulated data pointed out the importance of electromagnetic field redistribution in this phenomenon. Furthermore, the shape independence of a nanopartide found in this work greatly improved the application prospect of this nanoparticle-nanowire assisted SERS on film.
机译：金属纳米结构薄膜系统中的电磁场重新分布具有将光限制在平面膜上的强大能力，这对于平面或2D材料在分子表面的拉曼散射（SERS）具有重要意义。在这项工作中，借助于金属纳米粒子纳米线结构研究了金属或介电膜上单分子的SERS光谱。结果表明，相邻纳米粒子的SERS强度远大于单个纳米线的SERS强度，这通过有限方法模拟的电场分布得到了证实。实验和模拟数据的极化相关性都指出了在这种现象中电磁场重新分布的重要性。此外，这项工作中发现的纳米粒子的形状独立性极大地改善了这种纳米粒子-纳米线辅助的SERS在膜上的应用前景。

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