TERS meaning in Academic & Science ?

Tip-enhanced Raman spectroscopy is a specialist approach to surface-enhanced Raman spectroscopy (SERS) in which enhancement of Raman scattering occurs only at the point of a near atomically sharp pin, typically coated with gold.

The maximum resolution achievable using an optical microscope, including Raman microscopes, is limited by the Abbe limit, which is approximately half the wavelength of the incident light. Furthermore, with SERS spectroscopy the signal obtained is the sum of a relatively large number of molecules. TERS overcomes these limitations as the Raman spectrum obtained originates primarily from the molecules within a few tens of nanometers of the tip.