| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Li, Jin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Controlling Pt nanoparticle sintering by sub-monolayer MgO ALD thin filmscitations
- 2023Atomic layer deposition of yttrium oxide as a protective coating for lithium metal anodes
- 2022Titanium carboxylate molecular layer deposited hybrid films as protective coatings for lithium-ion batteriescitations
- 2021Autism-associated mutations in K <sub>V</sub> 7 channels induce gating pore currentcitations
- 2021Atomic layer deposition on polymer thin films : on the role of precursor infiltration and reactivitycitations
- 2021Covalent graphite modification by low-temperature photocatalytic oxidation using a titanium dioxide thin film prepared by atomic layer depositioncitations
- 2020Surfactant-laden bubble dynamics under porous polymer films.citations
- 2014Tumour biomechanical response to the vascular disrupting agent ZD6126 in vivo assessed by magnetic resonance elastography.citations
Places of action
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article
Surfactant-laden bubble dynamics under porous polymer films.
Abstract
The dynamics of air bubbles spreading on the underside of solid substrates is an important scientific problem with numerous applications. This work explores the spreading of bubbles against an ultra-thin, porous ultra-high-molecular-weight polyethylene (UHMWPE) film. This polymer film can be used in applications where a solid-liquid-gas interface is involved, like froth flotation for mineral processing, underwater methane capture, to prevent foaming in bioreactors, and in degassing in microfluidics. When an air bubble is released underneath such a film, the bubble bounces against the film, makes contact after the liquid film dewets, spreads against the film and shrinks in size as the gas within the bubble permeates through the pores of the film. In our work, these events were recorded using a high-speed camera. The effect of different surface-active species like surfactants, which exhibit interfacial mobility and proteins, which form a viscoelastic interfacial network, was also studied. The adsorption of these surface-active molecules led to profound differences in the interaction of the bubbles and their ultimate removal through the film. Importantly, the permeation flux of the bubbles was lower in the presence of these molecules, affected in part by a lower capillary driving force and also because of the decreased film permeability. This ultra-thin film offers a high permeation flux, which makes it a promising candidate for the aforementioned applications. Furthermore, the effect of surface-active species such as surfactants and proteins encountered in these environments is elucidated.