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. 2020 Aug 7;20(16):4407. doi: 10.3390/s20164407

Figure 6.

Figure 6

Piezoresistive and piezoelectric e-skin sensors developed by Hyunhyub Ko and co-workers in (a) 2015 [87] (Copyright © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany) and (b) 2015 [88].