Issue 1, 2020

Ultra-simple wearable local sweat volume monitoring patch based on swellable hydrogels

Abstract

Quantifiably monitoring sweat rate and volume is important to assess the stress level of individuals and/or prevent dehydration, but despite intense research, a convenient, continuous, and low-cost method to monitor sweat rate and total sweat volume loss remains an un-met need. We present here an ultra-simple wearable sensor capable of measuring sweat rate and volume accurately. The device continuously monitors sweat rate by wicking the produced sweat into hydrogels that measurably swell in their physical geometry. The device has been designed as a simple to fabricate, low-cost, disposable patch. This patch exhibits stable and predictable operation over the maximum variable chemistry expected for sweat (pH 4–9 and salinity 0–100 mM NaCl). Preliminary in vivo testing of the patch has been achieved during aerobic exercise, and the sweat rates measured via the patch accurately follow actual sweat rates.

Graphical abstract: Ultra-simple wearable local sweat volume monitoring patch based on swellable hydrogels

Supplementary files

Article information

Article type
Paper
Submitted
12 9 2019
Accepted
20 11 2019
First published
04 12 2019

Lab Chip, 2020,20, 168-174

Author version available

Ultra-simple wearable local sweat volume monitoring patch based on swellable hydrogels

F. J. Zhao, M. Bonmarin, Z. C. Chen, M. Larson, D. Fay, D. Runnoe and J. Heikenfeld, Lab Chip, 2020, 20, 168 DOI: 10.1039/C9LC00911F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements