The rapid advancements in wearable technologies are allowing for personal and tailored monitoring systems for core bodily metrics. Modern smartwatches accurately and frequently stream physical signals such as heart rate and respiratory rate. However, smartwatches have yet to track a multitude of physiological parameters, including sweat rate. This work presents a new wearable device that tracks sweat rate, the body's most important thermoregulatory function. The device is tape‐free and utilizes an off‐the‐shelf humidity sensor, with the potential to be integrated with existing smartwatch bands. It features a 3D‐printed chamber with a humidity sensor and microheater, and it interfaces the skin with a malleable and concave sweat collector. Through various experiments and trials, the authors seek to understand the relationship between sweat‐induced humidity within the chamber and the amount of sweat secreted when worn. Compared to existing sweat rate sensing devices, this hygrometer‐based device can be worn for extensive periods of time without overfilling. The device's reusability and compactness make it a good candidate for use alongside modern, microfluidic‐based sweat rate devices.
Here, a smartwatch for sweat monitoring was presented for perspiration analysis. The smartwatch played the part of analyzing, computing, and displaying the real‐time data with the feature of comfortable wearing and lightweight ergonomic design. Moreover, the paper‐based microfluidic patch with a three‐dimensional structure was proposed to realize the sweat collection and solve the issue of sweat accumulation. To further realizing the sweat monitoring, the potassium and sodium ion‐selective electrodes were developed by the screen‐printing technique. The experiment of on‐body monitoring the K+and Na+in sweat had been carried out to further demonstrate the feasibility of the smartwatch.
more » « less- PAR ID:
- 10257404
- Publisher / Repository:
- Wiley Blackwell (John Wiley & Sons)
- Date Published:
- Journal Name:
- Electroanalysis
- Volume:
- 33
- Issue:
- 3
- ISSN:
- 1040-0397
- Page Range / eLocation ID:
- p. 643-651
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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m , well within the physiological levels of NH4+and Ca2+in sweat. The integrated devices are successfully implemented with both ex situ measurements and on human subjects with real‐time analysis using a wearable sensor assembly. -
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