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Updated: May 23, 2026

Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy
Published on: January 9, 2017
Study of colloidal particle Brownian aggregation by low-coherence fiber optic dynamic light scattering
Hui Xia1, Ru Yi Pang, Rui Zhang
1School of Physics and Electronics, Central South University, Changsha 410083, China. xhui73@csu.edu.cn
Abstract:
The aggregation kinetics of particles in dense polystyrene latex suspensions is studied by low-coherence fiber optic dynamic light scattering. Low-coherence fiber optic dynamic light scattering is used to measure the hydrodynamic radius of the aggregates. The aggregation kinetics data obtained can be fitted into a single exponential function, which is the characteristic of slow aggregation. It is found that the aggregation rate of particles increased with higher electrolyte levels and with larger particle concentrations. The experimental results can be explained by use of the Derjaruin-Landau-Verwey-Overbeer (DLVO) theory.
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