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

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Bidirectional scattering distribution function measurements from volume diffusers: correction factors and associated

Thomas A Germer

|September 9, 2016

Summary

This summary is machine-generated.

Volume diffusion affects bidirectional scattering distribution function measurements. Correction factors are derived for known optical properties, aiding uncertainty assessment when properties are unknown. Some geometries minimize diffusion effects.

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Area of Science:

Optical physics
Radiometry
Biophysics

Background:

Accurate measurement of the bidirectional scattering distribution function (BSDF) is crucial in fields like optics and biophysics.
Volume diffusion can introduce significant errors in BSDF measurements, especially when using finite apertures.

Purpose of the Study:

To investigate the impact of volume diffusion on BSDF measurements with finite apertures.
To develop correction factors for BSDF measurements affected by volume diffusion.
To provide guidance for assessing measurement uncertainty when optical properties are unknown.

Main Methods:

Derivation of analytical expressions for correction factors.
Analysis of measurement geometries and their susceptibility to volume diffusion.

Main Results:

Correction factor expressions are derived based on reduced scattering coefficients and refractive index.
The derived expressions can guide uncertainty assessment in the absence of known optical properties.
Certain measurement geometries were found to mitigate the effects of volume diffusion more effectively than their reciprocal counterparts.

Conclusions:

Volume diffusion is a critical factor influencing BSDF measurement accuracy.
The developed correction factors offer a method to improve measurement precision when optical properties are known.
Understanding geometric effects is key to minimizing diffusion-induced errors in BSDF measurements.