Drying of Complex Suspensions
Entry by Leon Furchtgott, APP 225 Fall 2010.
Drying of Complex Suspensions" Lei Xu, Alexis Berges, Peter J. Lu, Andre R. Studart, Andrew B. Schofield, Hidekazu Oki,6 Simon Davies, and David A. Weitz, Phys. Rev. Lett. 104, 128303 (2010).
Drying of suspensions of colloids is important in a lot of areas, from the coffee-ring effect to technologically important phenomena such as paint and cosmetics drying. This paper seeks to understand a slightly simplified version of these phenomena: the drying of a mixture of an emulsion and colloidal particles. Most emulsions scatter light significantly making them difficult to image; this paper gets around this challenge and resolves the 3D structure of the mixture using confocal microscopy.