Mie scattering by soft core-shell particles and its applications to ellipsometric light scattering

Abstract

Through the use of Mie theory generalized to multiple spheres, the derivatives of the scattering matrix elements and ellipsometric scattering variables are found as a function of shell thickness and nonconcentricity for core-shell particles. In particular, for the case of a core-shell sphere system where the centers are not concentric, the derivatives are taken with respect to the line segment describing the distance between spherical centers. The derivatives of the scattering matrix elements can be used to calculate the changes in ellipsometric light scattering, allowing for sensitivity and precision in quantitative models of fluctuations in core-shell systems. Computed results giving model contrast for a variety of sizes and fluctuation modes are used to design and guide novel light-scattering experiments currently underway.

DLS and zeta potential – What they are and what they are not?

“…However, when the size of the particles exceeds this threshold of λ/10 then Rayleigh scattering is replaced by anisotropic Mie scattering where the scattered light is unequal in energy (inelastic scattering) to the incident light and angle-dependent ( Fig. 1) [30] where the scattered light is most intense towards the direction of the incident light [31]. This size threshold (λ/10) is due to the way electromagnetic waves (e.g., light) interact with a particle and falls beyond the scope of this review although excellent textbooks and reference literature are available for consultation [32,33].…”

Latest achievements in generalized Lorenz‐Mie theories: A commented reference database

“… used EBCM to investigate the sensitivity of the global rainbow technique to non‐sphericity of droplets. Derivatives are also used in a work by Ross and Siegel dealing with Mie scattering by soft core‐shell particles and its applications to ellipsometric light scattering. Sun et al .…”

Form factor for distorted semi-flexible polymer chains

“…This journal is © The Royal Society of Chemistry 2018 to distinguish coherent and incoherent contributions 24 and excited and relaxed fluctuations of a soft colloidal shell. 42,43 A theoretical description of other advanced light scattering techniques adapted to polymers to be developed in the future with similar abilities might be based on the methods introduced here.…”