Surface and Interference Coenhanced Raman Scattering of Graphene
Surface and Interference Coenhanced Raman Scattering of Graphene
复制标题
石墨烯的表面和干涉共增强拉曼散射
DOI：
10.1021/nn8008799
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发表时间：
2009-04-01
期刊：
影响因子：
17.1
通讯作者：
Cheng, Hui-Ming
中科院分区：
文献类型：
--
作者：
Gao, Libo;Ren, Wencai;Cheng, Hui-Ming
我们提出了一种新的表面和干涉共增强拉曼散射技术，通过使用特殊设计的覆盖有表面活性金属和氧化物双层(SMO)的硅衬底来显著增强石墨烯的拉曼信号强度。与原始的Si衬底相比，总的增强比可达到10(3)量级。结合石墨烯在SMO衬底上的可见性，我们证明可以很容易地检测到石墨烯的微小结构变化和表面结构。这项技术使拉曼光谱在石墨烯、孤立的碳纳米管和其他薄膜状材料的超灵敏表征领域成为更强大的工具。
We propose a novel surface and interference coenhanced Raman scattering technique to dramatically enhance the Raman signal intensity of graphene by using a specifically designed substrate of Si capped with surface-active metal and oxide double layers (SMO). The total enhancement ratio can reach the order of 10(3) compared with the original Si substrate. Combining the visibility of graphene on the SMO substrate, we demonstrate that the tiny structure change and surface structure of grapheme can be easily detected. This technique makes Raman spectroscopy a more powerful tool in the field of ultrasensitive characterization of graphene, isolated carbon nanotubes, and other film-like materials.