An embedded 3D printing technique — which uses an alginate–polyacrylamide hydrogel supporting matrix and a conductive silver–hydrogel ink — can be used to fabricate hydrogel electronic devices containing various different embedded circuits.
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Qu, S. 3D printing of hydrogel electronics. Nat Electron 5, 838–839 (2022). https://doi.org/10.1038/s41928-022-00900-0
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DOI: https://doi.org/10.1038/s41928-022-00900-0
