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February 26, 2026Proceedings of the National Academy of Sciences3 citationsOpen Access

Aerophilic debubbling

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BVBert VandereydtSNSaurabh NathKVKripa K. Varanasi

Key Points

  • The aim is to investigate the debubbling process using aerophilic membranes and understand its dynamics.
  • Conducted experiments with aerophilic membranes on liquid-air interfaces
  • Examined bubble interactions approaching the membrane
  • Characterized evacuation regimes and scaling behaviors
  • Bubbles were eliminated within milliseconds using aerophilic membranes
  • Debubbling efficacy improved significantly above a specific permeability threshold
  • Three distinct evacuation regimes were identified, governed by scaling laws

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.

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Cite This Study

Vandereydt et al. (2026) studied this question.

synapsesocial.com/papers/699fe33695ddcd3a253e6f15https://doi.org/10.1073/pnas.2526444123
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