- Raman spectroscopy, named after Indian physicist Sir C. V. Raman.
- It is a spectroscopic technique used:
- to observe vibrational, rotational, and other low-frequency modes in a system
- to provide information on molecular vibrations and crystal structures.
- It plays an important role in both R&D and QA/QC in a variety of industries and academic fields such as semiconductors, polymers, pharmaceuticals, batteries, life sciences and more.
- Identifying the unknown substance and polymers,
- Tracking changes in molecular structures,
- Tracking a change in crystallinity,
- Evaluating the magnitude of residual stress,
- Assessing the direction of orientation of molecules.
- Provide a structural fingerprint by which molecules can be identified.
The advanced types of Raman spectroscopy include surface-enhanced Raman, resonance Raman, tip-enhanced Raman, polarized Raman, stimulated Raman (analogous to stimulated emission), transmission Raman, spatially offset Raman, and hyper Raman.