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首页> 外文期刊>Physica status solidi, B. Basic research >Tip-enhanced Raman scattering along a single wall carbon nanotubes bundle
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Tip-enhanced Raman scattering along a single wall carbon nanotubes bundle

机译:沿单壁碳纳米管束的尖端增强拉曼散射

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摘要

Raman scattering is a common technique for studying carbon nanotubes due to the possibility to observe the radial breathing mode (RBM), which is used for identification of single wall carbon nanotubes ‘‘SWCNT.’’ Using tip-enhanced Raman scattering (TERS) we show along a small SWCNTs bundle that the RBMs arewell visible in near-field, even if they are not observable in the far-field. Different Raman intensities in TERS for the D, G, and 2D modes at six different positions along a SWCNTs bundle were observed. We discuss this strong dependence of the TERS signal on the position of the tip on the sample and on the distance between the tip and the sample.
机译:拉曼散射是研究碳纳米管的常用技术,因为它有可能观察到径向呼吸模式(RBM),该模式用于识别单壁碳纳米管“ SWCNT”。使用尖端增强拉曼散射(TERS)我们沿着一个小的SWCNT束显示,即使在远场中也无法观察到,RBM在近场中还是很明显的。在沿着SWCNTs束的六个不同位置处,对于D,G和2D模式,在TERS中观察到了不同的拉曼强度。我们讨论了TERS信号对尖端在样品上的位置以及尖端与样品之间的距离的强烈依赖性。

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