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Issue 17, 2014
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Direct three-dimensional imaging of polymer–water interfaces by nanoscale hard X-ray phase tomography

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Abstract

We report three-dimensional (3D) direct imaging of complex surface–liquid interfaces by hard X-ray phase contrast tomography as a non-destructive approach for the morphological characterization of surfaces at the micro- and nanoscale in contact with water. Specifically, we apply this method to study the solid–air–water interface in hydrophobic macroporous polymethacrylate surfaces, and the solid–oil–water interface in slippery liquid-infused porous surfaces (SLIPS). Varying the isotropic spatial resolution allows the 3D quantitative characterization of individual polymer globules, globular clusters (porosity) as well as the infused lubricant layer on SLIPS. Surface defects were resolved at the globular level. We show the first application of X-ray nanotomography to hydrated surface characterizations and we anticipate that X-ray nanoscale imaging will open new ways for various surface/interface studies.

Graphical abstract: Direct three-dimensional imaging of polymer–water interfaces by nanoscale hard X-ray phase tomography

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Publication details

The article was received on 08 Oct 2013, accepted on 13 Jan 2014 and first published on 14 Jan 2014


Article type: Paper
DOI: 10.1039/C3SM52604F
Citation: Soft Matter, 2014,10, 2982-2990
  • Open access: Creative Commons BY license
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    Direct three-dimensional imaging of polymer–water interfaces by nanoscale hard X-ray phase tomography

    Y. Cheng, H. Suhonen, L. Helfen, J. Li, F. Xu, M. Grunze, P. A. Levkin and T. Baumbach, Soft Matter, 2014, 10, 2982
    DOI: 10.1039/C3SM52604F

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