One of the most distinctive hallmarks of many-body systems far from equilibrium is the spontaneous emergence of order under conditions where disorder would be plausibly expected. Here, we report on the self-transition between ordered and disordered emulsions in divergent microfluidic channels, i.e., from monodisperse assemblies to heterogeneous polydisperse foamlike structures, and back again to ordered ones. The transition is driven by the nonlinear competition between viscous dissipation and surface tension forces as controlled by the device geometry, particularly the aperture angle of the divergent microfluidic channel. An unexpected route back to order is observed in the regime of large opening angles, where a trend towards increasing disorder would be intuitively expected.

Montessori, A., Tiribocchi, A., Lauricella, M., Bonaccorso, F., & Succi, S. (2021). Wet to dry self-transitions in dense emulsions: From order to disorder and back. PHYSICAL REVIEW FLUIDS, 6(2) [10.1103/PhysRevFluids.6.023606].

Wet to dry self-transitions in dense emulsions: From order to disorder and back

Montessori A.;
2021

Abstract

One of the most distinctive hallmarks of many-body systems far from equilibrium is the spontaneous emergence of order under conditions where disorder would be plausibly expected. Here, we report on the self-transition between ordered and disordered emulsions in divergent microfluidic channels, i.e., from monodisperse assemblies to heterogeneous polydisperse foamlike structures, and back again to ordered ones. The transition is driven by the nonlinear competition between viscous dissipation and surface tension forces as controlled by the device geometry, particularly the aperture angle of the divergent microfluidic channel. An unexpected route back to order is observed in the regime of large opening angles, where a trend towards increasing disorder would be intuitively expected.
Montessori, A., Tiribocchi, A., Lauricella, M., Bonaccorso, F., & Succi, S. (2021). Wet to dry self-transitions in dense emulsions: From order to disorder and back. PHYSICAL REVIEW FLUIDS, 6(2) [10.1103/PhysRevFluids.6.023606].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11590/400494
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