343 citations · 958 across the 10 of their papers we have counts for
7 papers · 1 filter
Dynamo regimes and transitions in the VKS experiment
M. Berhanu, G. Verhille, J. Boisson +14
The Von K{á}rm{á}n Sodium experiment yields a variety of dynamo regimes, when asymmetry is imparted to the flow by rotating impellers at different speed F1 and F2. We show that as…
Experimental evidence of slippage breakdown for a superhydrophobic surface in a microfluidic device
Guido Bolognesi, Cecile Cottin-Bizonne, Christophe Pirat
A full characterization of the water flow past a silicon superhydrophobic surface with longitudinal micro-grooves enclosed in a microfluidic device is presented. Fluorescence micro…
Orbits and reversals of a drop rolling inside a horizontal circular hydraulic jump
Alexis Duchesne, Clément Savaro, Luc Lebon +2
We explore the complex dynamics of a non-coalescing drop of moderate size inside a circular hydraulic jump of the same liquid formed on a horizontal disk. In this situation the dro…
Quantifying effective slip length over micropatterned hydrophobic surfaces
Peichun Tsai, Alisia M. Peters, Christophe Pirat +3
We employ micro-particle image velocimetry (-PIV) to investigate laminar micro-flows in hydrophobic microstructured channels, in particular the slip length. These microchannels…
Drop impact upon micro- and nanostructured superhydrophobic surfaces
Peichun Tsai, Sergio Pacheco, Christophe Pirat +2
We experimentally investigate drop impact dynamics onto different superhydrophobic surfaces, consisting of regular polymeric micropatterns and rough carbon nanofibers, with similar…
Dynamics of the spontaneous breakdown of superhydrophobicity
C. Pirat, M. Sbragaglia, A. M. Peters +4
Drops deposited on rough and hydrophobic surfaces can stay suspended with gas pockets underneath the liquid, then showing very low hydrodynamic resistance. When this superhydrophob…
Spontaneous Breakdown of Superhydrophobicity
Mauro Sbragaglia, Alisia M. Peters, Christophe Pirat +4
In some cases water droplets can completely wet micro-structured superhydrophobic surfaces. The {\it dynamics} of this rapid process is analyzed by ultra-high-speed imaging. Depend…