TY - JOUR
T1 - Dynamics of anisotropic colloidal systems
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
Y1 - 2024/4/15
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.
U2 - 10.1016/j.jcis.2023.12.163
DO - 10.1016/j.jcis.2023.12.163
M3 - Article
C2 - 38244498
AN - SCOPUS:85182733574
SN - 0021-9797
VL - 660
SP - 314
EP - 320
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -