Measuring and overcoming limits of the Saffman-Delbrück model for soap film viscosities.

We observe tracer particles diffusing in soap films to measure the two-dimensional (2D) viscous properties of the films. Saffman-Delbrück type models relate the single-particle diffusivity to parameters of the film (such as thickness h) for thin films, but the relation breaks down for thicker films....

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Bibliographic Details
Main Authors: Skanda Vivek, Eric R Weeks
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2015-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4379181?pdf=render