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. 2022 Jan 12;9(7):2104426. doi: 10.1002/advs.202104426

Figure 8.

Figure 8

The use of add‐ons for improving accuracy and stability. a) Integration of a force regulator with a PPG sensor contact force between the skin and a PPG sensor constantly for the consistent and stable PPG measurement results independent of body movements. Reproduced with permission.[ 277 ] Copyright 2018, AIP Publishing. b) Integration of a micro‐sized RTD type temperature sensor next to several sensing modules to compensate measurement results depending on the temperature. Reproduced with permission.[ 75 ] Copyright 2016, Springer Nature. c) Integration of temperature, humidity and pH sensors to obtain more accurate glucose measurement results where the three additional elements were monolithically integrated with the glucose‐sensing element on the flexible substrate. Reproduced with permission.[ 68 ] Copyright 2017, AAAS.