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. 2022 Nov 17;12(11):1039. doi: 10.3390/bios12111039

Figure 3.

Figure 3

Examples of composite electrodes. (a) Carbon nanotubes embedded in a printed eyeglass (Reprinted with permission [5]. Copyright 2020 American Chemical Society). (b) Conductive polymer foam based on urethane and taffeta materials (Reprinted with permission under the terms of the CC-BY license [38]. Copyright 2021, the Authors. Published by MDPI). (c) Silver embroidered electrode and electrode-lead connection (Reprinted with permission under the terms of the CC-BY license [21]. Copyright 2021, the Authors. Published by MDPI). (d) 3D-Knit dry electrodes using conductive elastomeric fibers with CEF (Reprinted with permission [90]. Copyright 2022 Wiley-VCH GmbH). (e) Photographs demonstrating adhesion of the flexible hydrogel (Reprinted with permission under the terms of the CC-BY license [97]. Copyright 2021, the authors. Published by MDPI). (f) Tortuosity of the proposed hydrogel at −115 °C (Reprinted with permission under the terms of the CC-BY license [98]. Copyright 2021, the Authors. Published by IOP). (g) Photographs demonstrating the stretchability of the starch hydrogel (Reprinted with permission [61]. Copyright 2022 Wiley-VCH GmbH).