136 citations · 846 across the 35 of their papers we have counts for
24 papers · 1 filter
Controlling the electrostatic Faraday instability using superposed electric fields
Sebastian Dehe, Maximilian Hartmann, Aditya Bandopadhyay +1
When the interface between a dielectric and a conducting liquid is excited by an oscillatory electric field, electrostatic Faraday waves can be induced. Here, we study the response…
Shear flow over a surface containing a groove covered by an incompressible surfactant phase
Tobias Baier, Steffen Hardt
We study shear-driven liquid flow over a planar surface with an embedded gas-filled groove, with the gas-liquid interface protruding slightly above or below the planar surface. The…
Deformation modes of an oil-water interface under a local electric field: From Taylor cones to surface dimples
Sebastian Dehe, Steffen Hardt
Fluidic interfaces disintegrate under sufficiently strong electric fields, leading to electrohydrodynamic (EHD) tip streaming. Taylor cones, which emit charged droplets from the ti…
Electroosmotic flow in small-scale channels induced by surface-acoustic waves
Mathias Dietzel, Steffen Hardt
Numerical simulations of the Navier-Stokes, Nernst-Planck, and the Poisson equations are employed to describe the transport processes in an aqueous electrolyte in a parallel-plate…
Breakup Dynamics of Capillary Bridges on Hydrophobic Stripes
Maximilian Hartmann, Mathis Fricke, Lukas Weimar +4
The breakup dynamics of a capillary bridge on a hydrophobic stripe between two hydrophilic stripes is studied experimentally and numerically using direct numerical simulations. The…
Wetting of an annular liquid in a capillary tube
Cunjing Lv, Steffen Hardt
In this paper, we systematically investigate the wetting behavior of a liquid ring in a cylindrical capillary tube. We obtain analytical solutions of the axisymmetric Young-Laplace…