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. 2021 Jul 11;33(35):2100899. doi: 10.1002/adma.202100899

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© 2021 The Authors. Advanced Materials published by Wiley‐VCH GmbH

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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a) Powerpack for self‐powered wearable pH sensing. b) Self‐powered e‐skin for detecting sweat analytes (lactate, glucose, uric acid, and urea). a) Reproduced with permission.^[ ³² ^] Copyright 2018, Elsevier. b) Adapted with permission.^[ ¹⁵ ^] Copyright 2017, ACS.