Nonequilibrium structure formation in electrohydrodynamic emulsions

Kach, Jeremy I.; Walker, Lynn M.; Khair, Aditya S.

doi:10.1039/d3sm01110k

Soft Matter

2023

DOI: 10.1039/d3sm01110k

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Nonequilibrium structure formation in electrohydrodynamic emulsions

Jeremy I. Kach,

Lynn M. Walker,

Aditya S. Khair

Abstract: Application of an electric field across the interface of two fluids with low, but non-zero conductivities, gives rise to a sustained electrohydrodynamic (EHD) fluid flow. In the presence of neighboring...

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2024

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A phenomenological model for chains and bands in dipolar suspensions

Kach,

Walker,

Khair

2024

Journal of Rheology

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We introduce a phenomenological model for the dipolar interaction of polarizable particles under an external field, where the relative radial and rotational components of a particle pair interaction can be tuned. We show that the relative strengths of these two components govern the microstructure and dynamics of a suspension of such particles. Notably, dominant radial interactions give rise to the formation of zigzag band patterns, which were previously only thought to occur in systems where hydrodynamic interactions dominate. Through this phenomenological model, we show that dipolar interactions can be used to access an array of patterns in suspensions of polarizable particles, from chains to bands, which would dramatically affect suspension shear rheology, for instance.

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A phenomenological model for chains and bands in dipolar suspensions

Kach,

Walker,

Khair

2024

Journal of Rheology

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show abstract

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Nonequilibrium structure formation in electrohydrodynamic emulsions

Abstract: Application of an electric field across the interface of two fluids with low, but non-zero conductivities, gives rise to a sustained electrohydrodynamic (EHD) fluid flow. In the presence of neighboring...

Cited by 1 publication

References 73 publications

A phenomenological model for chains and bands in dipolar suspensions

A phenomenological model for chains and bands in dipolar suspensions

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