Raman

Raman spectroscopy

raman
Raman spectroscopy was initiated in the twenties of the last century by Professor C.V. Raman. It is constructed on the interaction of light photons with matter and the registration of scattered radiation coming from it. When to irradiate the sample with monochromatic laser light, then we will have the same scattered light (Rayleigh scattering) and Raman shifted photons. The scattered Raman light from molecules can have a high-energy component (Anti-Stokes Raman scatter) and low-energy (Stokes Raman scatter). The analysis of the frequency of scattered photons (non-Rayleigh scattering) allows us to obtain information on the chemical composition, intermolecular interaction and the features of the structure of matter.
Consequently, the Raman spectroscopy technology is a powerful non-destructive method for determining the structure of the host substance and impurities, as well as determining their qualitative and quantitative composition.

Areas of application of Raman spectroscopy:

  • semiconductor industry: to identify the composition of materials, impurities and their structures;
  • microbiology: study of unicellular microorganisms, analysis of lymphocytes and bacteria cells;
  • material science: analysis of photochemical reactions in solids, investigation of corrosion effect on the surface of metals;
  • agriculture: analysis of food and beverage quality, detection of pesticide and living organisms in foods;
  • pharmacology and medicine: detection of areas of skin lesions, identification of pharmacologic ingredients, monitoring kinetics of the reaction.