Search Results - "Ratschow, Aaron D"

Resonant Nanopumps: ac Gate Voltages in Conical Nanopores Induce Directed Electrolyte Flow by Ratschow, Aaron D, Pandey, Doyel, Liebchen, Benno, Bhattacharyya, Somnath, Hardt, Steffen

“…Inducing transport in electrolyte-filled nanopores with dc fields has led to influential applications ranging from nanosensors to DNA sequencing. Here we use…”
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Surface Charge Deposition by Moving Drops Reduces Contact Angles by Li, Xiaomei, Ratschow, Aaron D, Hardt, Steffen, Butt, Hans-Jürgen

“…Slide electrification-the spontaneous charge separation by sliding aqueous drops-can lead to an electrostatic potential in the order of 1 kV and change drop…”
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Gate Electrodes Enable Tunable Nanofluidic Particle Traps by Nicollier, Philippe M., Ratschow, Aaron D., Ruggeri, Francesca, Drechsler, Ute, Hardt, Steffen, Paratore, Federico, Knoll, Armin W.

“…The ability to control the location of nanoscale objects in liquids is essential for fundamental and applied research from nanofluidics to molecular biology…”
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How Charges Separate when Surfaces Are Dewetted by Ratschow, Aaron D, Bauer, Lisa S, Bista, Pravash, Weber, Stefan A L, Butt, Hans-Jürgen, Hardt, Steffen

“…Charge separation behind moving water drops occurs in nature and technology. Yet, the physical mechanism has remained obscure, as charge deposition is…”
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High Voltages in Sliding Water Drops by Bista, Pravash, Ratschow, Aaron D., Butt, Hans-Jürgen, Weber, Stefan A. L.

“…Water drops on insulating hydrophobic substrates can generate electric potentials of kilovolts upon sliding for a few centimeters. We show that the drop…”
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Charge distribution in turbulent flow of charged liquid—Modeling and experimental validation by Ratschow, Aaron D., Stein, Sigrun, Gross, Hans‐Jürgen

“…Electric discharges due to the flow of charged organic liquids are a common ignition source for explosions in the chemical and process industry. Prevention of…”
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Three-dimensional model for stacks of tubular high temperature proton exchange membrane fuel cells incorporating a thin layer approach for the membrane electrode assembly by Ratschow, Aaron D., Bermúdez Agudelo, María Catalina, Hampe, Manfred J.

“…A three-dimensional, non-isothermal, steady state model for stacks of tubular high temperature proton exchange membrane fuel cells (HT PEM FCs) is developed…”
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Electrostatics slows down the breakup of liquid bridges on solid surfaces by Farrokhi, Salar Jabbary, Ratschow, Aaron D, Hardt, Steffen

“…We experimentally study the breakup of water-glycerol liquid bridges on non-conductive surfaces and find that spontaneous charge deposition at the receding…”
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Convection Speeds Up the Charging of Porous Electrodes by Ratschow, Aaron D, Wagner, Alexander J, Janssen, Mathijs, Hardt, Steffen

“…We simulate the charging of a single electrolyte-filled pore using the modified Poisson-Nernst-Planck and Navier-Stokes equations. We find that…”
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Surface charge deposition by moving drops reduces contact angles by Li, Xiaomei, Ratschow, Aaron D, Hardt, Steffen, Butt, Hans-Jürgen

“…Phys. Rev. Lett. 131, 228201 (2023) Slide electrification - the spontaneous charge separation by sliding water drops - can lead to an electrostatic potential…”
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Gate Electrodes Enable Tunable Nanofluidic Particle Traps by Nicollier, Philippe M, Ratschow, Aaron D, Ruggeri, Francesca, Drechsler, Ute, Hardt, Steffen, Paratore, Federico, Knoll, Armin W

“…The ability to control the location of nanoscale objects in liquids is essential for fundamental and applied research from nanofluidics to molecular biology…”
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Resonantly-driven nanopores can serve as nanopumps by Ratschow, Aaron D, Pandey, Doyel, Liebchen, Benno, Bhattacharyya, Somnath, Hardt, Steffen

“…Physical Review Letters 129, 264501 (2022) Inducing transport in electrolyte-filled nanopores with dc fields has led to influential applications ranging from…”
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How charges separate when surfaces are dewetted by Ratschow, Aaron D, Bauer, Lisa S, Bista, Pravash, Weber, Stefan A. L, Butt, Hans-Jürgen, Hardt, Steffen

“…Charge separation at moving three-phase contact lines is observed in nature as well as technological processes. Despite the growing number of experimental…”
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