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Updated: May 2, 2026

Assembly and Characterization of Polyelectrolyte Complex Micelles
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Surface scattering of core-shell particles with anisotropic shell.

Pieter A A De Beule

    Journal of the Optical Society of America. A, Optics, Image Science, and Vision
    |February 25, 2014
    PubMed
    Summary

    Ellipsometry can detect subtle shell anisotropy in core-shell particles. This technique accurately measures particle dimensions and shell properties, crucial for material science and liposome studies.

    Area of Science:

    • Optical physics
    • Materials science
    • Nanotechnology

    Background:

    • Light scattering from spherical particles is well-described by the Bobbert-Vlieger solution.
    • Characterizing anisotropic shells in core-shell nanostructures presents significant challenges.
    • Ellipsometry is a powerful optical technique for thin film analysis.

    Purpose of the Study:

    • To extend the Bobbert-Vlieger solution for modeling anisotropic shells in core-shell structures.
    • To assess the capability of ellipsometry in resolving shell anisotropy.
    • To explore ellipsometry's application in liposome studies.

    Main Methods:

    • Numerical modeling based on the extended Bobbert-Vlieger solution.
    • Simulation of SiO(2)@Au core-shell particles on a silicon substrate.

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  • Application of the Ibrahim and Bashara criterion for data analysis.

    • Main Results:

    • Ellipsometry can resolve shell anisotropy as low as 1.8×10(-4) for specific core-shell particles.
    • Variable-angle ellipsometry is identified as suitable for separating core radius, shell thickness, and shell anisotropy.
    • Ellipsometry shows potential for determining liposome anisotropy and studying liposome fusion.

    Conclusions:

    • The extended model accurately predicts light scattering for anisotropic core-shell structures.
    • Ellipsometry is a highly sensitive technique for characterizing nanoscale material properties.
    • This approach offers new possibilities for liposome research and supported lipid bilayer formation.