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. 2022 Jan 7;8(1):46. doi: 10.3390/gels8010046

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Hydrogel sensors for real-time monitoring and simulated lung breathing. (a,b) Wired transmission (a) and wireless transmission (b) of the resistance from simulated lung breathing. No significant signal differences were collected in wired or wireless transmission in term of sensitivity. (c) Schematic illustration of wireless monitoring of lung breathing. (d) Images of rabbit lungs with wired (left) or wireless (right) transmission hydrogel sensor. Reproduced with permission from [63]. Copyright 2020 The Royal Society of Chemistry.