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

Cheng, Yin; Suhonen, Heikki; Helfen, Lukas; Li, Junsheng; Xu, Feng; Grunze, Michael; Levkin, Pavel A.; Baumbach, Tilo

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.

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Volltext §
DOI: 10.5445/IR/1000046408
Originalveröffentlichung
DOI: 10.1039/C3SM52604F
Scopus
Zitationen: 6
Web of Science
Zitationen: 7
Coverbild
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Institut für Toxikologie und Genetik (ITG)
Institut für Photonenforschung und Synchrotronstrahlung (IPS)
ANKA - die Synchrotronstrahlungsquelle am KIT (ANKA)
Publikationstyp Zeitschriftenaufsatz
Jahr 2014
Sprache Englisch
Identifikator ISSN: 1744-683X
urn:nbn:de:swb:90-464088
KITopen-ID: 1000046408
HGF-Programm 47.04.02 (POF II, LK 01)
Erschienen in Soft Matter
Band 10
Heft 17
Seiten 2982-2990
Bemerkung zur Veröffentlichung RSC geförderter Open Access-Artikel
Nachgewiesen in Web of Science
Scopus
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