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Related Experiment Video

Updated: Jul 7, 2026

Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy
09:16

Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy

Published on: January 9, 2017

Light-scattering intensity fluctuations in microdroplets containing inclusions.

G Videen, P Pellegrino, D Ngo

    Applied Optics
    |August 20, 1997
    PubMed
    Summary

    Light scattering fluctuations from microparticles with inclusions increase with inclusion size and concentration. This study quantifies these scattering intensity variations in host spheres with single and multiple inclusions.

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    Last Updated: Jul 7, 2026

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    Published on: January 9, 2017

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    Area of Science:

    • Physics
    • Optical physics
    • Materials science

    Background:

    • Light scattering from microparticles is influenced by internal structures.
    • Fluctuations in scattered light intensity can arise from dynamic changes within inclusions.
    • Understanding these fluctuations is key to characterizing microparticle composition and structure.

    Purpose of the Study:

    • To quantify the relationship between inclusion characteristics and light scattering fluctuations.
    • To investigate scattering fluctuations in microparticles with single and multiple inclusions.
    • To establish how inclusion size, position, and concentration affect scattering intensity variations.

    Main Methods:

    • Theoretical calculation of scattering fluctuation magnitudes for a single eccentrically located spherical inclusion.
    • Experimental measurement of scattering fluctuation amplitudes for host spheres with multiple inclusions.
    • Analysis of the dependence of fluctuation amplitude on inclusion area and concentration.

    Main Results:

    • For single, small inclusions, scattering fluctuation amplitude scales approximately linearly with inclusion area.
    • For multiple inclusions, fluctuation amplitude exhibits an approximate power-law dependence on inclusion concentration.
    • The study provides quantitative relationships between microparticle internal structure and scattered light properties.

    Conclusions:

    • The intensity fluctuations of light scattered from microparticles are directly related to the properties of their inclusions.
    • Scattering fluctuation amplitude serves as a sensitive indicator of inclusion size and concentration within host microparticles.
    • This work offers insights into optical characterization techniques for composite microparticles.