In this study, the authors developed the silver nanoparticle immobilized tip as an apertureless near-field scanning optical microscope probe. Also, they developed experimental technique to obtain the surface enhanced Raman scattering (SERS) image of samples over wide range. As a result, the SERS spectra of individual carbon onions could be detected by the homemade tip with a high sensitivity. The results revealed that the intensity of band varied according to the presence of the defect of the carbon ring in the contact area. Also, carbon rings could be visualized with the maximum scan area of .
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