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Chen D, Desmond KW, Weeks ER. Experimental observation of local rearrangements in dense quasi-two-dimensional emulsion flow. Phys Rev E Stat Nonlin Soft Matter Phys. 2015;91(6):062306doi: 10.1103/PhysRevE.91.062306.
Chen, D., Desmond, K. W., & Weeks, E. R. (2015). Experimental observation of local rearrangements in dense quasi-two-dimensional emulsion flow. Physical review. E, Statistical, nonlinear, and soft matter physics, 91(6), 062306. https://doi.org/10.1103/PhysRevE.91.062306
Chen, Dandan, et al. "Experimental observation of local rearrangements in dense quasi-two-dimensional emulsion flow." Physical review. E, Statistical, nonlinear, and soft matter physics vol. 91,6 (2015): 062306. doi: https://doi.org/10.1103/PhysRevE.91.062306
Chen D, Desmond KW, Weeks ER. Experimental observation of local rearrangements in dense quasi-two-dimensional emulsion flow. Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Jun;91(6):062306. doi: 10.1103/PhysRevE.91.062306. Epub 2015 Jun 22. PMID: 26172718.
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Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Jun;91(6):062306. doi: 10.1103/PhysRevE.91.062306. Epub 2015 Jun 22.

Experimental observation of local rearrangements in dense quasi-two-dimensional emulsion flow.

Physical review. E, Statistical, nonlinear, and soft matter physics

Dandan Chen, Kenneth W Desmond, Eric R Weeks

Affiliations

  1. School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China.
  2. Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China.
  3. Department of Physics, Emory University, Atlanta, Georgia 30322, USA.

PMID: 26172718 DOI: 10.1103/PhysRevE.91.062306

Abstract

We experimentally study rearranging regions in slow athermal flow by observing the flow of a concentrated oil-in-water emulsion in a thin chamber with a constricting hopper shape. The gap of the chamber is smaller than the droplet diameters, so that the droplets are compressed into quasi-two-dimensional pancakes. We focus on localized rearrangements known as "T1 events" where four droplets exchange neighbors. Flowing droplets are deformed due to forces from neighboring droplets, and these deformations are decreased by nearby T1 events, with a spatial dependence related to the local structure. We see a tendency of the T1 events to occur in small clusters.

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