Near-Field Raman Spectroscopy
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Near-field Raman Spectroscopy (NFRS) combines the chemical-information-gathering power of Raman spectroscopy with the spatial resolution of the atomic force microscope (AFM). In addition, it allows the researcher to correlate topographic and optical data in ways impossible via other techniques. This article presents an overview of the methods used in NFRS, a brief history of the field, and a tour of some recent achievements in this rapidly evolving field. As with any other field at this stage of development, there are still unanswered questions in NFRS; some of these will be addressed as well.