89 citations · 199 across the 8 of their papers we have counts for
8 papers · 1 filter
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…
Energy conversion by surface-tension driven charge separation
Cesare Pini, Tobias Baier, Mathias Dietzel
In this work, the shear-induced electrokinetic streaming potential present in free-surface electrolytic flows subjected to a gradient in surface tension is assessed. Firstly, for a…
Conjugated liquid layers driven by the short-wavelength Bénard-Marangoni instability: experiment and numerical simulation
Iman Nejati, Mathias Dietzel, Steffen Hardt
The coupled dynamics of two conjugated liquid layers of disparate thicknesses, which coat a solid substrate and are subjected to a transverse temperature gradient, is investigated.…
Interfacial instability of liquid films coating the walls of a parallel-plate channel and sheared by a gas flow
Miklós Vécsei, Mathias Dietzel, Steffen Hardt
The stability of liquid films coating the walls of a parallel-plate channel and sheared by a pressure-driven gas flow along the channel centre is studied. The films are susceptible…
Thermoelectricity in confined liquid electrolytes
Mathias Dietzel, Steffen Hardt
The electric field in an extended phase of a liquid electrolyte exposed to a temperature gradient is attributed to different thermophoretic mobilities of the ion species. As shown…
Flow and streaming potential of an electrolyte in a channel with an axial temperature gradient
Mathias Dietzel, Steffen Hardt
The effect of an axial temperature gradient on the flow profile and the induced streaming potential of a pressure-driven symmetric electrolyte in a slit channel is investigated. Ba…
Mechanism for Spontaneous Growth of Nanopillar Arrays in Ultrathin Films Subject to a Thermal Gradient
Mathias Dietzel, Sandra M. Troian
Several groups have reported spontaneous formation of periodic pillar-like arrays in molten polymer nanofilms confined within closely spaced substrates maintained at different temp…
Formation of Nanopillar Arrays in Ultrathin Viscous Films: The Critical Role of Thermocapillary Stresses
Mathias Dietzel, Sandra M. Troian
Experiments by several groups during the past decade have shown that a molten polymer nanofilm subject to a large transverse thermal gradient undergoes spontaneous formation of per…