A Novel Wearable Sweat Rate Sensor for Both Dominant and Recessive Sweat Rate Measurement

This paper describes a wearable sweat rate sensor. The sweat rate sensor could measure the rate of both dominant and recessive sweat. In this design, the sweat could be absorbed by a piece of super hydrophilic material coated microporous polydimethylsiloxane (PDMS). The huge specific surface area of the microporous PDMS could speed up the evaporation of sweat. This structure converts the detection of liquid sweat approximately into the detection of water vapor sweat. The measurement of sweat rate only need pressing the sensor on skin for about 10 seconds.