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Theory:
The vibration of the Raman and IR spectra are molecular rotation spectroscopy, Raman spectroscopy study of molecular vibration light scattering it is also known as the Joint scattering spectroscopy, infrared spectroscopy to study the molecular vibration of light absorption, they can complement each other to become a powerful tool for molecular structure.
Raman spectroscopy principle: When a bunch of monochromatic light is irradiated to the surface of the material, part of the incident light through the material, in part reflected in the physical interface
