Plasmon-Induced Magnetic Resonance Enhanced Raman Spectroscopy,Nano Letters

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Plasmon-Induced Magnetic Resonance Enhanced Raman Spectroscopy
Nano Letters ( IF 9.6 ) Pub Date : 2018-03-05 00:00:00 , DOI: 10.1021/acs.nanolett.7b04385
Shu Chen ₁ , Yuejiao Zhang ₂ , Tien-Mo Shih ₁ , Weimin Yang ₁ , Shu Hu ₂ , Xiaoyan Hu ₂ , Jianfeng Li _{1,

2} , Bin Ren ₂ , Bingwei Mao ₂ , Zhilin Yang ₁ , Zhongqun Tian ₂

Affiliation

Plasmon-induced magnetic resonance has shown great potentials in optical metamaterials, chemical (bio)-sensing, and surface-enhanced spectroscopies. Here, we have theoretically and experimentally revealed (1) a correspondence of the strongest near-field response to the far-field scattering valley and (2) a significant improvement in Raman signals of probing molecules by the plasmon-induced magnetic resonance. These revelations are accomplished by designing a simple and practical metallic nanoparticle–film plasmonic system that generates magnetic resonances at visible-near-infrared frequencies. Our work may provide new insights for understanding the enhancement mechanism of various plasmon-enhanced spectroscopies and also helps further explore light-matter interactions at the nanoscale.

中文翻译：

等离子体感应磁共振增强拉曼光谱

等离子体激发的磁共振在光学超材料，化学（生物）传感和表面增强光谱学中显示出巨大潜力。在这里，我们从理论上和实验上揭示了（1）对远场散射谷的最强近场响应的对应关系，以及（2）通过等离子体激元感应的磁共振对探测分子的拉曼信号的显着改善。这些启示是通过设计一个简单实用的金属纳米粒子-薄膜等离激元系统完成的，该系统在可见-近红外频率下产生磁共振。我们的工作可能会为理解各种等离激元增强的光谱学的增强机制提供新的见解，并有助于进一步探索纳米级的光-质相互作用。

更新日期：2018-03-05

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