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Quantification of the Structure of Colloidal Gas-Liquid Interfaces.

ABSTRACT: We have quantified the structure of the colloidal gas-liquid interface using synchrotron X-ray reflectivity measurements on a model colloid-polymer mixture. The interfacial width shows mean-field scaling with the colloid density difference, and the density profiles appear to be monotonic. Furthermore, our measurements allow us to distinguish between different theoretical polymer descriptions commonly used to model colloid-polymer mixtures. Our results highlight the importance of capturing the correct polymer physics in obtaining a quantitative theoretical description of the colloidal gas-liquid interface.

SUBMITTER: Vis M

PROVIDER: S-EPMC7528408 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Quantification of the Structure of Colloidal Gas-Liquid Interfaces.

Vis Mark M Brouwer Kelly J H KJH González García Álvaro Á Petukhov Andrei V AV Konovalov Oleg O Tuinier Remco R

The journal of physical chemistry letters 20200921 19

We have quantified the structure of the colloidal gas-liquid interface using synchrotron X-ray reflectivity measurements on a model colloid-polymer mixture. The interfacial width shows mean-field scaling with the colloid density difference, and the density profiles appear to be monotonic. Furthermore, our measurements allow us to distinguish between different theoretical polymer descriptions commonly used to model colloid-polymer mixtures. Our results highlight the importance of capturing the co ...[more]

PMID: 32957778

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