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Oxygen masks typically rely on an external oxygen supply, whether in the form of oxygen tanks or capsules. In response to ‘the ultimate bioengineering challenge’ competition, we present the

design of a self-sustained oxygen mask using lightweight biocompatible materials to provide extended oxygen supply and water collection for low-resource settings. Access through your

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ACKNOWLEDGEMENTS The authors acknowledge the financial support of the project ImmunoChip, which has received funding from the European Research Council (ERC) under the European Union’s

Horizon Europe research and innovation programme grant agreement No. 101045415 and the support of the Deutsche Forschungsgemeinschaft (DFG) for the RTG ‘Supracolloidal Structures’ 2767.

AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany Xuan Peng, Xinne Zhao & Željko

Janićijević Authors * Xuan Peng View author publications You can also search for this author inPubMed Google Scholar * Xinne Zhao View author publications You can also search for this author

inPubMed Google Scholar * Željko Janićijević View author publications You can also search for this author inPubMed Google Scholar CONTRIBUTIONS All authors have jointly contributed to the

conception and conceptualization of the initial idea, the drafting of the original manuscript and the revisions of the manuscript. CORRESPONDING AUTHOR Correspondence to Xuan Peng. ETHICS

DECLARATIONS COMPETING INTERESTS The authors declare no competing interests. RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Peng, X., Zhao, X. &

Janićijević, Ž. Self-sustained oxygen mask. _Nat Rev Bioeng_ 3, 267–268 (2025). https://doi.org/10.1038/s44222-025-00300-x Download citation * Published: 14 April 2025 * Issue Date: April

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