In 1928, Indian scientist C.V. Raman discovered that when light passes through a transparent medium, scattered light with a different frequency from the incident light will appear. This phenomenon is Raman scattering. Different molecular chemical bonds form different characteristic spectra, which can be used to distinguish substances. The intensity of Raman scattered light is proportional to the molecular concentration and can be used for quantitative measurement.

1. Non-destructive: Samples do not require pretreatment and are analyzed non-destructive.

2. High sensitivity: Ability to detect low concentrations of compounds.

3. Fast: Real-time detection, suitable for online monitoring.

4. Versatile: Ability to detect solid, liquid and gas samples.

· Disease diagnosis: Used to detect diseases such as cancer and diabetes, by identifying molecular characteristics in tissues and body fluids.

· Drug research and development: Analyze drug components, molecular structure and crystal forms, and monitor drug metabolism and distribution.

· Cell and tissue research: Analyze the chemical composition of living cells without damaging the sample.

· Raw material testing: Quickly identify the composition and purity of raw materials.

· Quality control: Monitor the reaction process and final product quality in drug production.

· Polymer analysis: Study the chemical bonds and molecular structure of polymers.

· Semiconductor industry: Analyze crystal structure, stress distribution and optoelectronic properties of materials.

· Nanomaterials: Study the characteristics of nanomaterials such as carbon nanotubes and graphene.

· Metals and alloys: Inspect for metal corrosion and surface coatings.

· Pollution monitoring: Analyze pollutants in water, atmosphere and soil, such as organic matter, heavy metals, etc.

· Plastic recycling: Quickly sort different types of plastics.

· Mineral analysis: Identify mineral composition and crystal structure to aid in geological research.

· Food quality control: Detection of additives, pollutants and adulterated substances in food.

· Agricultural product analysis: Monitor pesticide residues and assess the quality of agricultural products.

· Beverage industry: Analyze the chemical composition of alcohol, fruit juice, etc.

· Poison testing: Quickly identify harmful substances such as drugs and explosives.

· Cultural relics identification: Analyze the chemical composition of cultural relics and determine the source and age.

· Evidence analysis: Rapid testing of fibers, paint, chemicals, etc. at the crime scene.

· Process monitoring: Online detection of chemical reaction processes and real-time control of parameters.

· Petrochemical industry: Analyze the chemical composition and reaction efficiency of petroleum products.

· Coatings and films: Study the uniformity and thickness of surface coatings.

· New energy materials: Study the chemical characteristics of battery materials, solar cells and fuel cells.

· Carbon capture and storage: Analyze captured carbon dioxide and related reaction products.