136 citations · 846 across the 35 of their papers we have counts for
38 papers
How charges separate when surfaces are dewetted
Aaron D. Ratschow, Lisa S. Bauer, Pravash Bista +3
Charge separation at moving three-phase contact lines is observed in nature as well as technological processes. Despite the growing number of experimental investigations in recent…
Surface charge deposition by moving drops reduces contact angles
Xiaomei Li, Aaron D. Ratschow, Steffen Hardt +1
Slide electrification - the spontaneous charge separation by sliding water drops - can lead to an electrostatic potential of 1 kV and change drop motion substantially. To find out,…
Resonantly-driven nanopores can serve as nanopumps
Aaron D. Ratschow, Doyel Pandey, Benno Liebchen +2
Inducing transport in electrolyte-filled nanopores with dc fields has led to influential applications ranging from nanosensors to DNA sequencing. Here we use the Poisson-Nernst-Pla…
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…