[MRO] Capillary Breakup of Discontinuously Rate Thickening Suspensions
Name
Zimoch-2013-Capillary breakup of discontinuously rate thickening suspensions.pdf
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545.79 KB
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Author(s)
Zimoch, Pawel Jerzy
Hosoi, Anette E.
McKinley, Gareth H
Date Issued
July 2013
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Zimoch, Pawel J., Gareth H. McKinley, and A. E. Hosoi. “Capillary Breakup of Discontinuously Rate Thickening Suspensions.” Physical Review Letters 111, no. 3 (July 2013). © 2013 American Physical Society
Version
Final published version
Abstract
Using discontinuously rate thickening suspensions (DRTS) as a model system, we show that beads-on-a-string morphologies can arise as a result of external viscous drag acting during capillary-driven breakup of a non-Newtonian fluid. To minimize the perturbative effect of gravity, we developed a new experimental test platform in which the filament is supported in a horizontal position at the surface of an immiscible oil bath. We show that the evolution of thin DRTS filaments during the capillary thinning process is well described by a set of one-dimensional slender filament equations. The strongly rate-dependent rheology of the test fluid and the aspect ratio of the filament couple to control the thinning dynamics and lead to a simple criterion describing the localized arrest of the capillary thinning process and the subsequent formation of complex, high aspect ratio beads-on-a-string structures.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Hatsopoulos Microfluids Laboratory
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.111.036001
