Integrated plasmon-enhanced Raman scattering (iPERS) spectroscopy.

Integrated plasmon-enhanced Raman scattering (iPERS) spectroscopy.
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集成等离子体增强拉曼散射 (iPERS) 光谱

DOI:
10.1038/s41598-017-15111-3
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发表时间:
2017-11-07
期刊:
影响因子:
4.6
通讯作者:
Xu W
Xu W
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Wang H;Li H;Xu S;Zhao B;Xu W

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提出了一种新的集成等离子体增强拉曼散射(iPERS)光谱技术,该技术采用倏逝场激发和反向收集的结构,将局域场增强和远场发射有机结合,耦合局域和传播表面等离子体,通过自行设计的等光程固体浸没透镜将Sers基底和拉曼光谱仪集成在一起。在这种配置中采用了金属纳米颗粒膜(NOF)系统,因为它提高了近场入射光场的放大10个数量级,由于四极和偶极共振模式的同时激发。这种iPERS允许更高的激发效率探测分子和充分收集的定向辐射的拉曼散射信号在一个倒置的方式,这表现出一个实际的可能性,监测等离子体光催化反应在纳米尺度和界面反应的研究有光明的前景。
A new strategy named integrated plasmon-enhanced Raman scattering (iPERS) spectroscopy that features a configuration of evanescent field excitation and inverted collection is presented, which well unites the local field enhancement and far field emission, couples localized and propagating surface plasmons, integrates the SERS substrates and Raman spectrometers via a self-designed aplanatic solid immersion lens. A metallic nanoparticle-on-a film (NOF) system was adopted in this configuration because it improves the amplification of the incidence light field in near field by 10 orders of magnitude due to the simultaneous excitation of quadrupolar and dipolar resonance modes. This iPERS allows for higher excitation efficiency to probed molecules and full collection of the directional-radiation Raman scattering signal in an inverted way, which exhibits a practical possibility to monitor plasmonic photocatalytic reactions in nanoscale and a bright future on interfacial reaction studies.
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发表时间: 2014-02-24
影响因子: 16.6
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