The wearable microfluidic chips are very appealing for sweat analysis in real time. Poly(methyl-methacrylate) (PMMA) and pressure-sensitive adhesive (PSA) polymer sheets are used to create the microfluidic chip. The several polymer layers were cut with a CO2 laser equipment and then bonded together with a thermal roller laminator. The textile strip used as the sensor region is inserted into the center of the apparatus and contains a pH-sensitive dye that changes color based on the sweat's pH.
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