Under-water and unidirectional air penetration, viz. air "diode", was effectively achieved on the basis of a composite mesh with Janus wettability. In the aqueous solution, the air bubbles can only pass through the mesh from the hydrophilic side to the superhydrophobic side, whereas they will be blocked from the opposite direction.
No takes yet. Share an insight, caveat, or question.
Chen et al. (2015) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: