Measurement method in microscopy in which spectroscopic data may be collected with the detector closer to the sample than the optical wavelength employed.
Note: Includes near-field infrared, Raman, and fluorescence spectroscopies.
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1792 (https://doi.org/10.1515/pac-2019-0404)