Stochastic jetting and dripping in confined soft granular flows

ORAL

Abstract

We report new dynamical modes in confined soft granular flows, such as stochastic jetting and dripping, with no counterpart in continuum viscous fluids. The new modes emerge from an avalanche-like dynamics of a close-packed monodisperse emulsion entering a narrow orifice. We observe formation of remarkably stable single-file granular jets which occasionally break resulting in non-Gaussian distribution of cluster sizes. We find that the sequences of droplet rearrangements that lead to the formation of such chains resemble unfolding of cancer cell clusters in narrow capillaries, overall demonstrating that the microfluidic emulsion systems could serve to model certain aspects of tissue dynamics.

*•EU Horizon 2020 programme•Foundation for Polish Science, First Team programme•National Science Center of Poland, Sonata Bis programme•CINECA Computational Grant ISCRA-C IsC83 - “SDROMOL”, id. HP10CZXK6R under the ISCRA initiative•Polish Ministry of Science and Higher Education

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Publication: "Stochastic jetting and dripping in confined soft granular flows"; submitted and under review in Physics Review Letters

Presenters

  • Michał Bogdan

    • Institute of Physical Chemistry Polish A

Authors

  • Michał Bogdan

    • Institute of Physical Chemistry Polish A

  • Andrea Montessori

    • Istituto per le Applicazioni del Calcolo "Mauro Picone"

  • Adriano Tiribocchi

    • Istituto per le Applicazioni del Calcolo del Consiglio Nazionale delle Ricerche; Center for Life Nanoscience at la Sapienza, Istituto Italiano di Tecnologia

  • Fabio Bonaccorso

    • Istituto per le Applicazioni del Calcolo del Consiglio Nazionale delle Ricerche; Center for Life Nanoscience at la Sapienza, Istituto Italiano di Tecnologia

  • Marco Lauricella

    • Istituto per le Applicazioni del Calcolo del Consiglio Nazionale delle Ricerche

  • Sauro Succi

    • Istituto per le Applicazioni del Calcolo del Consiglio Nazionale delle Ricerche; Center for Life Nanoscience at la Sapienza, Istituto Italiano di Tecnologia

  • Jan Guzowski

    • Institute of Physical Chemistry, Polish Academy of Sciences
    • Institute of Chemical Physics of the Polish Academy of Sciences