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On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
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A crosstalk-free dual-mode sweat sensing system for naked-eye sweat loss quantification via changes in structural reflectance
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Bowen Zhong, Hao Xu, Xiaokun Qin, Lingchen Liu, Hailong Wang & Lili Wang. A crosstalk-free dual-mode sweat sensing system for naked-eye sweat loss quantification via changes in structural reflectance[J]. Journal of Zhejiang University Science D, 2024, 7(4): 428-438.
@article{title="A crosstalk-free dual-mode sweat sensing system for naked-eye sweat
loss quantification via changes in structural reflectance",
author="Bowen Zhong, Hao Xu, Xiaokun Qin, Lingchen Liu, Hailong Wang & Lili Wang",
journal="Journal of Zhejiang University Science D",
volume="7",
number="4",
pages="428-438",
year="2024",
publisher="Zhejiang University Press & Springer",
doi="10.1007/s42242-024-00294-2"
}
%0 Journal Article
%T A crosstalk-free dual-mode sweat sensing system for naked-eye sweat
loss quantification via changes in structural reflectance
%A Bowen Zhong
%A Hao Xu
%A Xiaokun Qin
%A Lingchen Liu
%A Hailong Wang & Lili Wang
%J Journal of Zhejiang University SCIENCE D
%V 7
%N 4
%P 428-438
%@ 1869-1951
%D 2024
%I Zhejiang University Press & Springer
%DOI 10.1007/s42242-024-00294-2
TY - JOUR
T1 - A crosstalk-free dual-mode sweat sensing system for naked-eye sweat
loss quantification via changes in structural reflectance
A1 - Bowen Zhong
A1 - Hao Xu
A1 - Xiaokun Qin
A1 - Lingchen Liu
A1 - Hailong Wang & Lili Wang
J0 - Journal of Zhejiang University Science D
VL - 7
IS - 4
SP - 428
EP - 438
%@ 1869-1951
Y1 - 2024
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1007/s42242-024-00294-2
Abstract: Sweat loss monitoring is important for understanding the body’s thermoregulation and hydration status, as well as for comprehensive sweat analysis. Despite recent advances, developing a low-cost, scalable, and universal method for the fabrication
of colorimetric microfluidics designed for sweat loss monitoring remains challenging. In this study, we propose a novel laserengraved surface roughening strategy for various flexible substrates. This process permits the construction of microchannels
that show distinct structural reflectance changes before and after sweat filling. By leveraging these unique optical properties,
we have developed a fully laser-engraved microfluidic device for the quantification of naked-eye sweat loss. This sweat loss
sensor is capable of a volume resolution of 0.5 µL and a total volume capacity of 11 µL, and can be customized to meet
different performance requirements. Moreover, we report the development of a crosstalk-free dual-mode sweat microfluidic
system that integrates an Ag/AgCl chloride sensor and a matching wireless measurement flexible printed circuit board. This
integrated system enables the real-time monitoring of colorimetric sweat loss signals and potential ion concentration signals
without crosstalk. Finally, we demonstrate the potential practical use of this microfluidic sweat loss sensor and its integrated
system for sports medicine via on-body studies.
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