Aerophilic debubbling

Gas bubbles frequently accumulate at liquid interfaces, compromising throughput, selectivity, and stability across scales from microfluidics to natural ecosystems. Here, we experimentally show that highly permeable aerophilic membranes placed on a liquid-air interface annihilate bubbles within milliseconds. This ultrafast regime appears only above a critical permeability threshold, where the flow departs from classical Darcy-driven dynamics in micropores. We quantitatively characterize this aerophilicity-mediated debubbling process by examining local interactions at the scale of single bubbles approaching the membrane and identify three asymptotic evacuation regimes, the physics of which we capture through simple scaling laws.

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Publication Details

Journal
Proceedings of the National Academy of Sciences
Published
2026-02-23
DOI
https://doi.org/10.1073/pnas.2526444123
Primary Topic
Pickering emulsions and particle stabilization
Type
article
Field-Weighted Citation Impact
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article

Aerophilic debubbling

Saurabh Nath, Bert Vandereydt, Kripa K. Varanasi
Proceedings of the National Academy of Sciences
Pickering emulsions and particle stabilization
article

Aerophilic debubbling

Saurabh Nath, Bert Vandereydt, Kripa K. Varanasi
article en

Abstract

Gas bubbles frequently accumulate at liquid interfaces, compromising throughput, selectivity, and stability across scales from microfluidics to natural ecosystems. Here, we experimentally show that highly permeable aerophilic membranes placed on a liquid-air interface annihilate bubbles within milliseconds. This ultrafast regime appears only above a critical permeability threshold, where the flow departs from classical Darcy-driven dynamics in micropores. We quantitatively characterize this aerophilicity-mediated debubbling process by examining local interactions at the scale of single bubbles approaching the membrane and identify three asymptotic evacuation regimes, the physics of which we capture through simple scaling laws.

Proceedings of the National Academy of SciencesVol. 123(9)
California University of Pennsylvania (US), Massachusetts Institute of Technology (US)
Life in Land
Openalex Percentile: Top 46%
Pickering emulsions and particle stabilization
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