Principles and Applications of Dynamic Light Scattering Particle Size Measurement Dynamic light scattering particle size measurement is a commonly used particle size analysis technique that determines the size distribution of particles by measuring the intensity change produced by light scattering.
It is widely used in the research and industrial production process of particulate matter.
1.PrincipleDynamic light scattering particle size is based on the principle of light scattering, which scatters light from particles in a suspension as it passes through a system of cloudy liquids.
The size and concentration of the particles determine the distribution of scattering intensity.
By measuring the intensity change of the scattered light, the size and distribution of the particles can be inferred.
2.Measurement Method: A common method for measuring particle size by dynamic light scattering is to irradiate a sample with a laser and then detect the change in intensity of the scattered light.
Modern instruments perform multi-angle measurements by rotating detectors or photodiode arrays, thus increasing the accuracy and reliability of measurements.
3.Application field: Dynamic light scattering particle size is widely used in materials science, chemical engineering, environmental science and other fields.
In materials science, dynamic light scattering is used to analyze the structure and morphology of particles, as well as to study the surface properties of particles.
In chemical engineering, it can be used to monitor and control the grinding, mixing, and separation processes of particulate materials.
In environmental science, dynamic light scattering can be used to analyze atmospheric particulate matter, plankton in water columns, and more.
4.Advantages and limitations The advantages of dynamic light scattering particle size measurement are non-contact, non-contaminating, fast and accurate.
It can measure particles from micron to nanometer and can measure high concentrations of suspended liquids.
However, dynamic light scattering measurement of particle size also has some limitations, such as dependence on sample transparency and particle shape.
The measurement results are influenced by the concentration and distribution of the particles.
Dynamic light scattering particle size measurement is a fast, accurate, and widely used particle size analysis technique.
It plays an important role in materials science, chemical engineering, environmental science, and other fields, providing a powerful tool for research and industrial production.
As technology continues to advance, dynamic light scattering particle size will continue to evolve and be used in more fields.