Diffusion in CO2/air foams

How not to let CO2 bubbles over in the air

We have studied the transport of CO2 within a liquid 2D foam in contact with the atmosphere and shown how its effective diffusion in the medium emerges from the coupling between the structure of the foam and the transport of the gas through the soap films.
This study is the first step towards the design of low-cost foams-based systems for CO2 filtration and  capture.

PNAS 122, e2504617122 (2025). See also this movie.