Finding a needle in a chemical haystack: tip-enhanced Raman scattering for studying carbon nanotubes mixtures |
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Authors: | Chan K L Andrew Kazarian Sergei G |
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Affiliation: | Department of Chemical Engineering, Imperial College London, London, UK. |
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Abstract: | Tip-enhanced Raman scattering (TERS) has emerged as a powerful analytical tool for measuring chemical images with nanometre spatial resolution. In this paper, the application of TERS to study differentiation of single-walled carbon nanotubes (SWCNTs) with 14?nm spatial resolution is demonstrated by the measurement of a mixture of two different types of SWCNTs as the model sample. The results demonstrate that TERS is a viable tool for the detection and localization of different SWCNTs and amorphous carbon in mixed SWCNTs based on the spectral differences in the radial breathing mode and the D bands. |
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