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

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 ul...

Full description

Saved in:
Bibliographic Details
Published in:Lab on a chip Vol. 20; no. 1; p. 168
Main Authors: Zhao, F J, Bonmarin, M, Chen, Z C, Larson, M, Fay, D, Runnoe, D, Heikenfeld, J
Format: Journal Article
Language:English
Published: England 07.01.2020
Subjects:
Hydrogels - analysis
Hydrogels - economics
Particle Size
Wearable Electronic Devices - economics
ISSN:1473-0189, 1473-0189
Online Access:Get more information
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1473-0189
1473-0189
DOI:10.1039/c9lc00911f