This title appears in the Scientific Report :
2017
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevE.95.062601 in citations.
Please use the identifier: http://hdl.handle.net/2128/14753 in citations.
Anisotropic hydrodynamic function of dense confined colloids
Anisotropic hydrodynamic function of dense confined colloids
Dense colloidal dispersions exhibit complex wave-vector-dependent diffusion, which is controlled by both direct particle interactions and indirect nonadditive hydrodynamic interactions mediated by the solvent. In bulk the hydrodynamic interactions are probed routinely, but in confined geometries the...
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Personal Name(s): | Nygard, Kim (Corresponding author) |
---|---|
Buitenhuis, Johan / Kagias, Matias / Jefimovs, Konstantins / Zontone, Federico / Chushkin, Yuriy | |
Contributing Institute: |
Weiche Materie; ICS-3 |
Published in: | Physical Review E Physical review / E, 95 95 (2017 2017) 6 6, S. 062601 062601 |
Imprint: |
Woodbury, NY
Inst.
2017
2017-06-02 2017-06-01 |
DOI: |
10.1103/PhysRevE.95.062601 |
Document Type: |
Journal Article |
Research Program: |
Functional Macromolecules and Complexes |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/14753 in citations.
Dense colloidal dispersions exhibit complex wave-vector-dependent diffusion, which is controlled by both direct particle interactions and indirect nonadditive hydrodynamic interactions mediated by the solvent. In bulk the hydrodynamic interactions are probed routinely, but in confined geometries their studies have been hitherto hindered by additional complications due to confining walls. Here we solve this issue by combining high-energy x-ray photon correlation spectroscopy and small-angle x-ray-scattering experiments on colloid-filled microfluidic channels to yield the confined fluid's hydrodynamic function in the short-time limit. Most importantly, we find the confined fluid to exhibit a strongly anisotropic hydrodynamic function, similar to its anisotropic structure factor. This observation is important in order to guide future theoretical research. |