Diameter-selective near-field Raman analysis and imaging of isolated carbon nanotube bundles
Diameter-selective near-field Raman analysis and imaging of isolated carbon nanotube bundles
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DOI：
10.1063/1.2178490
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发表时间：
2006-02-27
影响因子：
4
通讯作者：
Inouye, Y
中科院分区：
文献类型：
--
作者：
Yano, T;Verma, P;Inouye, Y
针尖增强近场拉曼散射已被用来证明单壁碳纳米管（SWNTs）的分布的测量与空间分辨率远远超过衍射极限的探测光。这是通过测量近场拉曼光谱中单壁碳纳米管的径向呼吸模式（RBM）来完成的，该模式对应于尖端附近各种单壁碳纳米管的直径。此外，RBM的近场拉曼成像提供了对应于束内SWNT的直径分布的超分辨颜色映射，这不可能通过常规的形貌成像方法实现。(c)2006年，美国物理学会。
Tip-enhanced near-field Raman scattering has been utilized to demonstrate the measurement of the distribution of single-walled carbon nanotubes (SWNTs) with a spatial resolution far beyond the diffraction limit of the probing light. This was done by measuring the radial breathing mode (RBM) of SWNTs in the near-field Raman spectra, which corresponded to the diameters of various SWNTs in the immediate vicinity of the tip. Further, near-field Raman imaging of the RBM provided a super-resolved color mapping corresponding to the diameter distribution of SWNTs within a bundle, which is not possible to realize by conventional topographic imaging methods. (c) 2006 American Institute of Physics.