Anisotropic de Gennes Narrowing in Confined Fluids
(2016) In Physical Review Letters 116(16).- Abstract
The collective diffusion of dense fluids in spatial confinement is studied by combining high-energy (21 keV) x-ray photon correlation spectroscopy and small-angle x-ray scattering from colloid-filled microfluidic channels. We find the structural relaxation in confinement to be slower compared to the bulk. The collective dynamics is wave vector dependent, akin to the de Gennes narrowing typically observed in bulk fluids. However, in stark contrast to the bulk, the structure factor and de Gennes narrowing in confinement are anisotropic. These experimental observations are essential in order to develop a microscopic theoretical description of collective diffusion of dense fluids in confined geometries.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/eab561e5-04e1-4f52-8ce8-8e17cc4a72f2
- author
- Nygård, Kim
LU
; Buitenhuis, Johan
; Kagias, Matias
LU
; Jefimovs, Konstantins ; Zontone, Federico and Chushkin, Yuriy
- publishing date
- 2016-04-21
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 116
- issue
- 16
- article number
- 167801
- publisher
- American Physical Society
- external identifiers
-
- scopus:84964253325
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.116.167801
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2016 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »http://creativecommons.org/licenses/by/3.0/» Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
- id
- eab561e5-04e1-4f52-8ce8-8e17cc4a72f2
- date added to LUP
- 2023-11-27 09:09:08
- date last changed
- 2024-06-05 16:15:43
@article{eab561e5-04e1-4f52-8ce8-8e17cc4a72f2, abstract = {{<p>The collective diffusion of dense fluids in spatial confinement is studied by combining high-energy (21 keV) x-ray photon correlation spectroscopy and small-angle x-ray scattering from colloid-filled microfluidic channels. We find the structural relaxation in confinement to be slower compared to the bulk. The collective dynamics is wave vector dependent, akin to the de Gennes narrowing typically observed in bulk fluids. However, in stark contrast to the bulk, the structure factor and de Gennes narrowing in confinement are anisotropic. These experimental observations are essential in order to develop a microscopic theoretical description of collective diffusion of dense fluids in confined geometries.</p>}}, author = {{Nygård, Kim and Buitenhuis, Johan and Kagias, Matias and Jefimovs, Konstantins and Zontone, Federico and Chushkin, Yuriy}}, issn = {{0031-9007}}, language = {{eng}}, month = {{04}}, number = {{16}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Anisotropic de Gennes Narrowing in Confined Fluids}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.116.167801}}, doi = {{10.1103/PhysRevLett.116.167801}}, volume = {{116}}, year = {{2016}}, }