Dynamics of non-coalescence in unequal sized, conducting multi-droplet system suspended in an insulating medium under an electric field

S Roy, V Anand, RM Thaokar - Journal of Fluid Mechanics, 2022 - cambridge.org
An intriguing experimental observation in electrocoalescence of water-in-oil emulsions is the
occurrence of a very low critical electric field, beyond which chaining of droplets and …

Nonequilibrium structure formation in electrohydrodynamic emulsions

JI Kach, LM Walker, AS Khair - Soft Matter, 2023 - pubs.rsc.org
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 …

Tandem droplet locomotion in a uniform electric field

C Sorgentone, PM Vlahovska - Journal of Fluid Mechanics, 2022 - cambridge.org
An isolated charge-neutral droplet in a uniform electric field experiences no net force.
However, a droplet pair can move in response to field-induced dipolar and hydrodynamic …

Electrokinetic behavior of an individual liquid metal droplet in a rotating electric field

C Song, Y Tao, W Liu, Y Chen, R Yang, W Guo, B Li… - Physics of …, 2024 - pubs.aip.org
The interfacial tension gradient forms tangential stress that drives fluid flow at a liquid–liquid
interface, known as the Marangoni convection. In this study, we report on the electrocapillary …

[HTML][HTML] Quadrature error estimates for layer potentials evaluated near curved surfaces in three dimensions

L af Klinteberg, C Sorgentone, AK Tornberg - Computers & Mathematics …, 2022 - Elsevier
The quadrature error associated with a regular quadrature rule for evaluation of a layer
potential increases rapidly when the evaluation point approaches the surface and the …

Study on the rheology of a dilute emulsion of surfactant-covered droplets using the level set and closest point methods

PHN Pimenta, TF Oliveira - Physics of Fluids, 2021 - pubs.aip.org
In this work, we study the effects of surfactant elasticity (E), coverage factor (X), and Péclet
number (Pe) on the droplet shape and emulsion rheology. Our analysis considers a single …

Prediction and measurement of leaky dielectric drop interactions

JI Kach, LM Walker, AS Khair - Physical Review Fluids, 2022 - APS
Application of an electric field across the curved interface of two fluids of low but nonzero
conductivities, or “leaky dielectrics,” can give rise to electric stresses that drive sustained …

Reduced-Order Model for Surfactant-Laden Electrified Sessile Droplets

S Goel, DS Pillai - Langmuir, 2023 - ACS Publications
A comprehensive understanding of the physics of electrowetting of a surfactant-laden
droplet is important for applications in rapid healthcare diagnostics. A majority of biological …

An electrohydrodynamic dance of unequal partners

CC Maass - Journal of Fluid Mechanics, 2023 - cambridge.org
The dynamics of charge-free dielectric droplets under electric fields in weakly conducting
fluids is relevant to a large range of technological and environmental applications. In …

Nonlinear coupling effects of the thermocapillarity and insoluble surfactants to droplet migration under Poiseuille flow

Z Guo - Physical Review Fluids, 2023 - APS
Under a fully developed Poiseuille flow with nonisothermal condition, it has been widely
reported that the thermocapillary effects always strengthen the droplet migration velocity as …