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. 2021 Oct 28;9(1):2103257. doi: 10.1002/advs.202103257

Figure 17.

Figure 17

Calorimetric wearable microfluidics‐based SLMDs. a) Theoretical principle of the calorimetric flow rate sensor. Reproduced with permission.[ 197 ] Copyright 2017, AIP Publishing. b) Separate parts and overall device of a wireless SLMD for calorimetric measurement of sensible sweat loss. Reproduced with permission.[ 71 ] Copyright 2018, MDPI. c) Structural illustration of a miniaturized, on‐skin, flexible SLMD for wireless sensing of sweat loss. d) Image of the thermal flow rate sensor on a finger. e) Operating mechanism of the calorimetric SLMD for measuring sweat rate. Reproduced with permission.[ 39 ] Copyright 2021, Springer Nature.