Orientational order in a glass of charged platelets with a concentration gradient
(2013) In Soft Matter 9(42). p.9999-10004- Abstract
- Colloidal dispersions of anisometric particles can display dynamical arrest and ordering involving both translational and rotational degrees of freedom. We show that orientational order can develop in glassy colloidal dispersions of charged platelets when a concentration gradient is imposed through solvent evaporation. Our model system of Laponite (LRD) platelets in deionized water has been extensively studied for its ergodic to non-ergodic transitions, and the existence of an underlying isotropic-nematic phase transition has been a subject of debate. We use small-angle X-ray scattering, dynamical light scattering and birefringence to show that the orientational order we observe does not result from an underlying, uniquely determined... (More)
- Colloidal dispersions of anisometric particles can display dynamical arrest and ordering involving both translational and rotational degrees of freedom. We show that orientational order can develop in glassy colloidal dispersions of charged platelets when a concentration gradient is imposed through solvent evaporation. Our model system of Laponite (LRD) platelets in deionized water has been extensively studied for its ergodic to non-ergodic transitions, and the existence of an underlying isotropic-nematic phase transition has been a subject of debate. We use small-angle X-ray scattering, dynamical light scattering and birefringence to show that the orientational order we observe does not result from an underlying, uniquely determined equilibrium state with orientational order, but from plastic deformation of the colloidal glass. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4171655
- author
- Hansen, Elisabeth Lindbo ; Jabbari-Farouji, Sara ; Mauroy, Henrik ; Plivelic, Tomás LU ; Bonn, Daniel and Fossum, Jon Otto
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Soft Matter
- volume
- 9
- issue
- 42
- pages
- 9999 - 10004
- publisher
- Royal Society of Chemistry
- external identifiers
-
- wos:000325726100006
- scopus:84885635538
- ISSN
- 1744-6848
- DOI
- 10.1039/c3sm52103f
- language
- English
- LU publication?
- yes
- id
- 2396956e-8516-44d0-9016-a4f052ae0677 (old id 4171655)
- date added to LUP
- 2016-04-01 14:28:27
- date last changed
- 2022-02-19 19:13:04
@article{2396956e-8516-44d0-9016-a4f052ae0677,
abstract = {{Colloidal dispersions of anisometric particles can display dynamical arrest and ordering involving both translational and rotational degrees of freedom. We show that orientational order can develop in glassy colloidal dispersions of charged platelets when a concentration gradient is imposed through solvent evaporation. Our model system of Laponite (LRD) platelets in deionized water has been extensively studied for its ergodic to non-ergodic transitions, and the existence of an underlying isotropic-nematic phase transition has been a subject of debate. We use small-angle X-ray scattering, dynamical light scattering and birefringence to show that the orientational order we observe does not result from an underlying, uniquely determined equilibrium state with orientational order, but from plastic deformation of the colloidal glass.}},
author = {{Hansen, Elisabeth Lindbo and Jabbari-Farouji, Sara and Mauroy, Henrik and Plivelic, Tomás and Bonn, Daniel and Fossum, Jon Otto}},
issn = {{1744-6848}},
language = {{eng}},
number = {{42}},
pages = {{9999--10004}},
publisher = {{Royal Society of Chemistry}},
series = {{Soft Matter}},
title = {{Orientational order in a glass of charged platelets with a concentration gradient}},
url = {{http://dx.doi.org/10.1039/c3sm52103f}},
doi = {{10.1039/c3sm52103f}},
volume = {{9}},
year = {{2013}},
}