Liang, M;
Harder, R;
Robinson, IK;
(2014)
Brownian motion studies of viscoelastic colloidal gels by rotational single particle tracking.
IUCrJ
, 1
(3)
pp. 172-178.
10.1107/S2052252514006022.
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Abstract
Colloidal gels have unique properties due to a complex microstructure which forms into an extended network. Although the bulk properties of colloidal gels have been studied, there has been difficulty correlating those properties with individual colloidal dynamics on the microscale due to the very high viscosity and elasticity of the material. We utilize rotational X-ray tracking (RXT) to investigate the rotational motion of component crystalline colloidal particles in a colloidal gel of alumina and decanoic acid. Our investigation has determined that the high elasticity of the bulk is echoed by a high elasticity experienced by individual colloidal particles themselves but also finds an unexpected high degree of rotational diffusion, indicating a large degree of freedom in the rotational motion of individual colloids even within a tightly bound system.
| Type: | Article |
|---|---|
| Title: | Brownian motion studies of viscoelastic colloidal gels by rotational single particle tracking |
| Location: | England |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1107/S2052252514006022 |
| Publisher version: | http://dx.doi.org/10.1107/S2052252514006022 |
| Language: | English |
| Additional information: | Copyright © The Authors 2014. This is an Open Access article published under the Creative Commons Attribution (CC-BY) Licence (http://creativecommons.org/licenses/by/2.0/uk/legalcode). |
| Keywords: | colloidal gels, rotational X-ray tracking, rotational dynamics |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1487276 |
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