Dynamics of anisotropic colloidal systems

Autor(en)

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

Abstrakt

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.

Organisation(en)

Computergestützte Physik und Physik der Weichen Materie

Externe Organisation(en)

Lund University, Università degli Studi di Milano-Bicocca, European Synchrotron Radiation Facility ESRF, Stockholm University, MAX IV Laboratory

Journal

Journal of Colloid and Interface Science

Band

660

Seiten

314-320

Anzahl der Seiten

7

ISSN

0021-9797

DOI

https://doi.org/10.1016/j.jcis.2023.12.163

Publikationsdatum

04-2024

Peer-reviewed

Ja

ÖFOS 2012

103015 Kondensierte Materie, 103021 Optik, 103018 Materialphysik, 103029 Statistische Physik

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films, Biomaterials, Colloid and Surface Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/c24626b5-404d-44bf-9aec-1b9acc5e8ca5