Abstract
A nano-Raman setup using the optical fiber of a scanning near-field optical microscope, working in collection mode, is described and applied to mapping of TiO2∕PO4 phase distribution in glass ceramics. This material is extremely important as a surface-enhanced raman scattering substrate for biological and chemical analyses. The collected Raman signal in this near-field geometry reaches spatial resolutions better than 100nm, well below the diffraction limit.
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