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

• Verfasst von: Cheng, Yin [VerfasserIn]
• Verfasst von: Suhonen, Heikki [VerfasserIn]
• Verfasst von: Helfen, Lukas [VerfasserIn]
• Verfasst von: Li, Junsheng [VerfasserIn]
• Verfasst von: Xu, Feng [VerfasserIn]
• Verfasst von: Grunze, Michael [VerfasserIn]
• Verfasst von: Levkin, Pavel [VerfasserIn]
• Verfasst von: Baumbach, Tilo [VerfasserIn]
• Titel: Direct three-dimensional imaging of polymer-water interfaces by nanoscale hard X-ray phase tomography
• Verf.angabe: Yin Cheng, Heikki Suhonen, Lukas Helfen, Junsheng Li, Feng Xu, Michael Grunze, Pavel A. Levkin and Tilo Baumbach
• E-Jahr: 2014
• Jahr: 14 January 2014
• Umfang: 9 S.
• Fussnoten: Gesehen am 27.10.2020
• Titel Quelle: Enthalten in: Soft matter
• Ort Quelle: London : Royal Soc. of Chemistry, 2005
• Jahr Quelle: 2014
• Band/Heft Quelle: 10(2014), 17, Seite 2982-2990
• ISSN Quelle: 1744-6848
• DOI: doi:10.1039/C3SM52604F
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1736653628

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.