Anisotropic dynamics and kinetic arrest of dense colloidal ellipsoids in the presence of an external field studied by differential dynamic microscopy
Pal, Antara LU ; Martinez, Vincent A. ; Ito, Thiago H. LU ; Arlt, Jochen ; Crassous, Jérôme J. LU ; Poon, Wilson C.K. and Schurtenberger, Peter LU
(2020)
In Science Advances
6(3).
- Abstract
Anisotropic dynamics on the colloidal length scale is ubiquitous in nature. Of particular interest is the dynamics of systems approaching a kinetically arrested state. The failure of classical techniques for investigating the dynamics of highly turbid suspensions has contributed toward the limited experimental information available up until now. Exploiting the recent developments in the technique of differential dynamic microscopy (DDM), we report the first experimental study of the anisotropic collective dynamics of colloidal ellipsoids with a magnetic hematite core over a wide concentration range approaching kinetic arrest. In addition, we have investigated the effect of an external magnetic field on the resulting anisotropic... (More)
Anisotropic dynamics on the colloidal length scale is ubiquitous in nature. Of particular interest is the dynamics of systems approaching a kinetically arrested state. The failure of classical techniques for investigating the dynamics of highly turbid suspensions has contributed toward the limited experimental information available up until now. Exploiting the recent developments in the technique of differential dynamic microscopy (DDM), we report the first experimental study of the anisotropic collective dynamics of colloidal ellipsoids with a magnetic hematite core over a wide concentration range approaching kinetic arrest. In addition, we have investigated the effect of an external magnetic field on the resulting anisotropic collective diffusion. We combine DDM with small-angle x-ray scattering and rheological measurements to locate the glass transition and to relate the collective short- and long-time diffusion coefficients to the structural correlations and the evolution of the zero shear viscosity as the system approaches an arrested state.
(Less)
- author
- Pal, Antara
LU
; Martinez, Vincent A.
; Ito, Thiago H.
LU
; Arlt, Jochen
; Crassous, Jérôme J.
LU
; Poon, Wilson C.K.
and Schurtenberger, Peter
LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Science Advances
- volume
- 6
- issue
- 3
- article number
- eaaw9733
- publisher
- American Association for the Advancement of Science (AAAS)
- external identifiers
-
- scopus:85078152806
- pmid:32010765
- ISSN
- 2375-2548
- DOI
- 10.1126/sciadv.aaw9733
- language
- English
- LU publication?
- yes
- id
- ca65fcc0-e60b-4f44-9f8f-b53b5c5d2620
- date added to LUP
- 2020-02-07 13:51:23
- date last changed
- 2024-05-15 05:47:11
@article{ca65fcc0-e60b-4f44-9f8f-b53b5c5d2620,
abstract = {{<p>Anisotropic dynamics on the colloidal length scale is ubiquitous in nature. Of particular interest is the dynamics of systems approaching a kinetically arrested state. The failure of classical techniques for investigating the dynamics of highly turbid suspensions has contributed toward the limited experimental information available up until now. Exploiting the recent developments in the technique of differential dynamic microscopy (DDM), we report the first experimental study of the anisotropic collective dynamics of colloidal ellipsoids with a magnetic hematite core over a wide concentration range approaching kinetic arrest. In addition, we have investigated the effect of an external magnetic field on the resulting anisotropic collective diffusion. We combine DDM with small-angle x-ray scattering and rheological measurements to locate the glass transition and to relate the collective short- and long-time diffusion coefficients to the structural correlations and the evolution of the zero shear viscosity as the system approaches an arrested state.</p>}},
author = {{Pal, Antara and Martinez, Vincent A. and Ito, Thiago H. and Arlt, Jochen and Crassous, Jérôme J. and Poon, Wilson C.K. and Schurtenberger, Peter}},
issn = {{2375-2548}},
language = {{eng}},
number = {{3}},
publisher = {{American Association for the Advancement of Science (AAAS)}},
series = {{Science Advances}},
title = {{Anisotropic dynamics and kinetic arrest of dense colloidal ellipsoids in the presence of an external field studied by differential dynamic microscopy}},
url = {{http://dx.doi.org/10.1126/sciadv.aaw9733}},
doi = {{10.1126/sciadv.aaw9733}},
volume = {{6}},
year = {{2020}},
}