Near-field Raman spectroscopy of carbon nanotubes

In the paper we explore resolving capabilities of near-field Raman spectroscopy based on the effect of giant field enhancement close to a nano-sized metallic probe. By using single-walled carbon nanotubes as a test sample we demonstrated that this method allows one to attain sub-wavelength spatial resolution of 50 nm and the Raman scattering enhancement of $10^4$.