7 papers
Enhancing hydrogen production in alkaline electrolyzers by using an ultra-fast kinetics surfactant
D. Fernández-Martínez, G. Martín-Zazo, A. Rubio-González +4
We study the effect of surfactant adsorption kinetics on water electrolysis performance using Surfynol 465, an ultrafast-kinetics surfactant. High-speed optical diagnostics reveal…
Influence of a vertical-wall leading edge on bouncing and escape bubble rising regimes
A. Rubio-González, E. J. Vega, R. Bolaños-Jiménez
This work investigates deformable gas bubbles rising near a vertical wall in ultrapure water, focusing on how the position of the wall leading edge affects their near-wall dynamics…
Effect of surfactant kinetics on the wetting following the drop impact onto rough surfaces
S. Rodríguez-Aparicio, M. Herreruela-Rosado, M. G. Cabezas +2
We experimentally analyze the effect of a surfactant on wetting following drop impact on rough surfaces, paying special attention to the role of dynamic surface tension. To this en…
Influence of surfactant kinetics on rapid interface creation via microjet impact on liquid pools
D. Fernández-Martínez, E. J. Vega, J. M. Montanero +2
We experimentally investigate the influence of surfactant adsorption kinetics on cavity dynamics during the rapid formation of interfaces. For this purpose, we use a submillimeter…
Effect of a downstream vertical wall on the rise regime of an isolated bubble: an experimental study
T. González-Rubio, A. Rubio, R. Bolaños-Jiménez +1
This work experimentally investigates deformable nitrogen bubbles rising in ultrapure water and interacting with a vertical wall, focusing on how this downstream boundary alters th…
Critical bubble bursting in real water. Effect of surface-active contaminants
S. Rodríguez-Aparicio, A. Cebrián-García, E. J. Vega +2
We study the bursting of a bubble on a liquid free surface under critical conditions, i.e., those leading to the minimum (maximum) size (velocity) of the first-emitted jet droplet.…
A new emitter for electrospray and electrohydrodynamic jet printing
D. Fernández-Martínez, E. J. Vega, A. M. Gañán-Calvo +1
We propose using a dielectric beveled nozzle for electrospray and electrohydrodynamic jet printing. This nozzle stabilizes the liquid ejection of low-conductivity liquids, consider…