Multiple light scattering in nematic liquid crystals
Holger Stark, Tom C. Lubensky (University of Pennsylvania,, Philadelphia)
TL;DR
This paper develops a rigorous diffusion approximation for multiple light scattering in anisotropic media, specifically nematic liquid crystals, providing numerical diffusion constants and autocorrelation functions relevant for experimental analysis.
Contribution
It introduces a new rigorous theoretical framework for light diffusion in nematic liquid crystals and computes specific diffusion constants and autocorrelation functions.
Findings
Numerical values for diffusion constants D_parallel and D_perp for 5CB.
Calculated temporal autocorrelation functions for diffusing wave spectroscopy.
Provides a foundation for interpreting light scattering experiments in nematic liquid crystals.
Abstract
We present a rigorous treatment of the diffusion approximation for multiple light scattering in anisotropic random media, and apply it to director fluctuations in a nematic liquid crystal. For a typical nematic material, 5CB, we give numerical values of the diffusion constants and . We also calculate the temporal autocorrelation function measured in Diffusing Wave Spectroscopy.
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