Abstract
In simulations and experiments, we study the drying of films containing mixtures of large and small colloidal particles in water. During drying, the mixture stratifies into a layer of the larger particles at the bottom with a layer of the smaller particles on top. We developed a model to show that a gradient in osmotic pressure, which develops dynamically during drying, is responsible for the segregation mechanism behind stratification.
- Received 10 October 2015
- Corrected 18 May 2016
DOI:https://doi.org/10.1103/PhysRevLett.116.118301
© 2016 American Physical Society
Physics Subject Headings (PhySH)
Corrections
18 May 2016
Errata
Publisher’s Note: Dynamic Stratification in Drying Films of Colloidal Mixtures [Phys. Rev. Lett. 116, 118301 (2016)]
Andrea Fortini, Ignacio Martín-Fabiani, Jennifer Lesage De La Haye, Pierre-Yves Dugas, Muriel Lansalot, Franck D’Agosto, Elodie Bourgeat-Lami, Joseph L. Keddie, and Richard P. Sear
Phys. Rev. Lett. 116, 229902 (2016)
Erratum: Dynamic Stratification in Drying Films of Colloidal Mixtures [Phys. Rev. Lett. 116, 118301 (2016)]
Andrea Fortini, Ignacio Martín-Fabiani, Jennifer Lesage De La Haye, Pierre-Yves Dugas, Muriel Lansalot, Franck D’Agosto, Elodie Bourgeat-Lami, Joseph L. Keddie, and Richard P. Sear
Phys. Rev. Lett. 116, 229901 (2016)
Focus
Particles Stratify by Size in Thin Films
Published 18 March 2016
Small particles suspended in a liquid separate out by size as the liquid evaporates, an effect that could lead to techniques for making layered structures.
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