The application of Raman spectroscopy technology in different fields

Raman spectroscopy is a molecular spectrum, and the inelastic scattering caused by the influence of the molecular structure of a substance on excitation light is called Raman scattering. The frequency change of scattered light forms Raman spectroscopy. Raman spectroscopy analysis is based on Indian scientist C V. The Raman scattering effect discovered by Raman spectroscopy is an analytical method used to obtain information on molecular vibration and rotation by analyzing scattering spectra with frequencies different from the incident light, and applied to the study of molecular structure.


Raman spectroscopy technology has been widely used in fields such as agriculture, biology, chemistry, geology, food safety, chromaticity calculation, environmental detection, medicine and health, LED detection, semiconductor industry, petrochemical industry, etc. Raman spectroscopy can be used to quickly characterize the chemical composition and structure of samples, whether they are solids, liquids, gases, colloids, ointments, or powders. Therefore, Raman spectroscopic imaging, which observes information such as material composition and structure in the form of images, has the most important application value in biomedical, gemstone identification, material analysis and other fields.


Step by Step Viewing Raman Spectroscopy
Analysis direction of Raman spectroscopy


Qualitative analysis: Different substances have different characteristic spectra, so qualitative analysis can be conducted through spectra.
Structural analysis: The analysis of spectral bands is the basis for conducting material structure analysis.
Quantitative analysis: Based on the characteristics of the absorbance of a substance in the spectrum, it can have good analytical ability for the amount of substance.
Information from Raman spectroscopy


Confirmation of Raman Frequency - Composition of Matter
Changes in Raman Peak Position - Tension/Stress
Polarization of Raman: Crystal Symmetry and Orientation
Raman peak width - crystal mass
Raman peak intensity - total amount of substance
1. Application of Raman in Gem Identification
Raman spectroscopy technology has significant advantages in gemstone identification, as it can detect extremely small impurities, microscopic inclusions, and artificial dopants in gemstones, and can effectively, quickly, non destructively, and accurately identify the types of gemstones - natural gemstones, synthetic gemstones, and optimized processed gemstones. It can also meet the non-destructive and fast requirements for gemstone identification.


2. The Application of Raman in the Field of Biology
Raman imaging technology can provide chemical composition, structure, and spatial information of molecules, and has great application prospects in the biomedical field. Cells, tissues, and organs in different states have different biochemical compositions and spectral characteristics. By analyzing Raman spectroscopy images, the pathological condition of the test sample can be provided, and normal and diseased tissues can be effectively distinguished. Therefore, Raman plays a very important role in the biomedical field.


3. The application of Raman spectroscopy in medicine
Due to Raman spectroscopy analysis, it is particularly important for the study of precious drugs as it does not require sample destruction. Various drugs reflect differences in Raman spectra due to their different chemical compositions. It has provided great assistance to many pharmaceutical researchers.


4. The Application of Raman in Materials
Raman spectroscopy can provide many important information about the structure of polymer materials. Such as molecular structure and composition, stereoregularity, crystallization and orientation, molecular interactions, as well as surface and interface structures. Many inorganic compounds have multiple crystal structures with different Raman activities, so Raman spectroscopy can be used to determine and identify the crystal structures of inorganic compounds that infrared spectroscopy cannot achieve.