Near-field enhanced ultraviolet resonance Raman spectroscopy using aluminum bow-tie nano-antenna
Near-field enhanced ultraviolet resonance Raman spectroscopy using aluminum bow-tie nano-antenna
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DOI：
10.1063/1.4746747
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发表时间：
2012-09-10
影响因子：
4
通讯作者：
Hallen, H. D.
中科院分区：
文献类型：
--
作者：
Li, Ling;Lim, Shuang Fang;Hallen, H. D.
铝制蝴蝶结纳米天线与深紫外光中的共振拉曼效应相结合，大大提高了拉曼光谱对小体积材料的灵敏度，例如这里使用的苯。我们进一步证明了几个强红外模式的梯度场拉曼峰。由于铝纳米结构中的表面等离子体共振，我们从近场增强中获得了类似于10(5)的信号强度增益。受激光线宽的限制，在线共振增强贡献了另一个几千倍的因素。砰的一声，实现了整体收益上亿。(C)2012年美国物理研究所。[http://dx.doi.org/10.1063/1.4746747]
An aluminum bow-tie nano-antenna is combined with the resonance Raman effect in the deep ultraviolet to dramatically increase the sensitivity of Raman spectra to a small volume of material, such as benzene used here. We further demonstrate gradient-field Raman peaks for several strong infrared modes. We achieve a gain of similar to 10(5) in signal intensity from the near field enhancement due to the surface plasmon resonance in the aluminum nanostructure. The on-line resonance enhancement contributes another factor of several thousands, limited by the laser line width. Thud, an overall gain of hundreds of million is achieved. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4746747]