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Light scattering with stream-in-air flow systems.

G C Salzman, M E Wilder, J H Jett

    The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society
    |January 1, 1979
    PubMed
    Summary
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    This study validates light-scattering measurements for cell sizing using Mie theory. Refractive index significantly impacts detector response for homogeneous spheres in stream-in-air systems.

    Area of Science:

    • Optical Physics
    • Biophysical Measurement Techniques
    • Particle Characterization

    Background:

    • Forward angle and 90-degree light scattering are common for cell sizing in stream-in-air systems.
    • These methods often lack a strong theoretical foundation for accurate measurements.
    • Understanding the theoretical basis is crucial for reliable particle analysis.

    Purpose of the Study:

    • To evaluate the theoretical basis of light-scattering measurements for cell sizing.
    • To compare Mie theory calculations with experimental data from plastic microspheres.
    • To investigate the influence of sphere properties on detector response.

    Main Methods:

    • Utilized Mie theory for theoretical calculations of light scattering.
    • Performed experimental measurements using plastic microspheres in a stream-in-air system.

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  • Analyzed detector response based on forward angle and 90-degree light scattering.

    • Main Results:

    • Mie theory calculations were compared with experimental scattering measurements.
    • Demonstrated that detector response is sensitive to the refractive index of homogeneous spheres.
    • Highlighted the importance of theoretical validation for light-scattering cell sizing.

    Conclusions:

    • Mie theory provides a valuable framework for understanding light-scattering measurements in cell sizing.
    • Refractive index is a critical parameter influencing measurement accuracy.
    • Further theoretical development is needed for robust stream-in-air flow system applications.