Comparing frameworks for analysis of diffusing wave spectroscopy experimental data

IF 19.3 1区化学 Q1 CHEMISTRY, PHYSICAL Advances in Colloid and Interface Science Pub Date : 2025-08-01 Epub Date: 2025-03-28 DOI:10.1016/j.cis.2025.103491

Robert E. McMillin III, James K. Ferri

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Abstract

Diffusing wave spectroscopy (DWS) is a photon correlation spectroscopy method, which similar to dynamic light scattering (DLS), relates intensity fluctuations of scattered light to optical and dynamic properties of a sample. In this review, we focus on developing a quantitative comparison of the analysis frameworks that have been proposed for diffusing wave spectroscopy data, and the relative strengths and limitations of each approach. The theory behind DWS is presented and the relevant physical quantities that DWS can probe are discussed in more detail. We specifically compare Monte Carlo simulation and direct numerical simulation of the diffusion equation to obtain photon pathlength distributions P(s). We summarize the impact of associated with the selection of which simulation approach and its associated physical assumptions on the determination of the sample characteristics, including the mean squared displacement of the scattering centers dispersed in the sample and the mean free photon transport length.

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漫射波光谱实验数据分析的框架比较

漫射波光谱（DWS）是一种光子相关光谱方法，它与动态光散射（DLS）类似，将散射光的强度波动与样品的光学和动态特性联系起来。在这篇综述中，我们的重点是对已经提出的漫射波光谱数据的分析框架进行定量比较，以及每种方法的相对优势和局限性。介绍了DWS的原理，并详细讨论了DWS可以探测的物理量。我们特别比较了蒙特卡罗模拟和直接数值模拟的扩散方程，得到了光子的路长分布P(s)。我们总结了与选择哪种模拟方法相关的影响及其相关的物理假设对确定样品特性的影响，包括分散在样品中的散射中心的均方位移和平均自由光子输运长度。

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来源期刊

Advances in Colloid and Interface Science 化学-物理化学

CiteScore

28.50

自引率

2.60%

发文量

175

审稿时长

31 days

期刊介绍： "Advances in Colloid and Interface Science" is an international journal that focuses on experimental and theoretical developments in interfacial and colloidal phenomena. The journal covers a wide range of disciplines including biology, chemistry, physics, and technology. The journal accepts review articles on any topic within the scope of colloid and interface science. These articles should provide an in-depth analysis of the subject matter, offering a critical review of the current state of the field. The author's informed opinion on the topic should also be included. The manuscript should compare and contrast ideas found in the reviewed literature and address the limitations of these ideas. Typically, the articles published in this journal are written by recognized experts in the field.