Liquid-filled pores in membranes have been designed to reversibly open and close, allowing only particular fluids through at given pressures. This enables tunable and gated separations of mixtures of immiscible fluids. See Letter p.70
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Ulbricht, M. Gating mechanism under pressure. Nature 519, 41–42 (2015). https://doi.org/10.1038/519041a
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DOI: https://doi.org/10.1038/519041a
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