Dynamics of anisotropic colloidal systems: What to choose, DLS, DDM or XPCS?

Md. Arif Kamal; Matteo Brizioli; Thomas Zinn; Theyencheri Narayanan; Roberto Cerbino; Fabio Giavazzi; Antara Pal

doi:10.1016/j.jcis.2023.12.163

Dynamics of anisotropic colloidal systems: What to choose, DLS, DDM or XPCS?

Md. Arif Kamal
, Matteo Brizioli
, Thomas Zinn
, Theyencheri Narayanan
, Roberto Cerbino
, Fabio Giavazzi
, Antara Pal (Corresponding author)

Computational and Soft Matter Physics

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

Investigation of the dynamics of colloids in bulk can be hindered by issues such as multiple scattering and sample opacity. These challenges are exacerbated when dealing with inorganic materials. In this study, we employed a model system of Akaganeite colloidal rods to assess three leading dynamics measurement techniques: 3D-(depolarized) dynamic light scattering (3D-(D)DLS), polarized-differential dynamic microscopy (P-DDM), and x-ray photon correlation spectroscopy (XPCS). Our analysis revealed that the translational and rotational diffusion coefficients captured by these methods show a remarkable alignment. Additionally, by examining the q-ranges and maximum volume fractions for each approach, we offer insights into the best technique for investigating the dynamics of anisotropic systems at the colloidal scale.

Original language	English
Pages (from-to)	314-320
Number of pages	7
Journal	Journal of Colloid and Interface Science
Volume	660
DOIs	https://doi.org/10.1016/j.jcis.2023.12.163
Publication status	Published - 15 Apr 2024

Austrian Fields of Science 2012

103015 Condensed matter
103021 Optics
103018 Materials physics
103029 Statistical physics

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title = "Dynamics of anisotropic colloidal systems: What to choose, DLS, DDM or XPCS?",

abstract = "Investigation of the dynamics of colloids in bulk can be hindered by issues such as multiple scattering and sample opacity. These challenges are exacerbated when dealing with inorganic materials. In this study, we employed a model system of Akaganeite colloidal rods to assess three leading dynamics measurement techniques: 3D-(depolarized) dynamic light scattering (3D-(D)DLS), polarized-differential dynamic microscopy (P-DDM), and x-ray photon correlation spectroscopy (XPCS). Our analysis revealed that the translational and rotational diffusion coefficients captured by these methods show a remarkable alignment. Additionally, by examining the q-ranges and maximum volume fractions for each approach, we offer insights into the best technique for investigating the dynamics of anisotropic systems at the colloidal scale.",

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T2 - What to choose, DLS, DDM or XPCS?

AU - Kamal, Md. Arif

AU - Brizioli, Matteo

AU - Zinn, Thomas

AU - Narayanan, Theyencheri

AU - Cerbino, Roberto

AU - Giavazzi, Fabio

AU - Pal, Antara

PY - 2024/4/15

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N2 - Investigation of the dynamics of colloids in bulk can be hindered by issues such as multiple scattering and sample opacity. These challenges are exacerbated when dealing with inorganic materials. In this study, we employed a model system of Akaganeite colloidal rods to assess three leading dynamics measurement techniques: 3D-(depolarized) dynamic light scattering (3D-(D)DLS), polarized-differential dynamic microscopy (P-DDM), and x-ray photon correlation spectroscopy (XPCS). Our analysis revealed that the translational and rotational diffusion coefficients captured by these methods show a remarkable alignment. Additionally, by examining the q-ranges and maximum volume fractions for each approach, we offer insights into the best technique for investigating the dynamics of anisotropic systems at the colloidal scale.

AB - Investigation of the dynamics of colloids in bulk can be hindered by issues such as multiple scattering and sample opacity. These challenges are exacerbated when dealing with inorganic materials. In this study, we employed a model system of Akaganeite colloidal rods to assess three leading dynamics measurement techniques: 3D-(depolarized) dynamic light scattering (3D-(D)DLS), polarized-differential dynamic microscopy (P-DDM), and x-ray photon correlation spectroscopy (XPCS). Our analysis revealed that the translational and rotational diffusion coefficients captured by these methods show a remarkable alignment. Additionally, by examining the q-ranges and maximum volume fractions for each approach, we offer insights into the best technique for investigating the dynamics of anisotropic systems at the colloidal scale.

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JO - Journal of Colloid and Interface Science

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Dynamics of anisotropic colloidal systems: What to choose, DLS, DDM or XPCS?

Abstract

Austrian Fields of Science 2012

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