Cited by 67Advanced Sensor and Energy Harvesting MaterialsMicrofluidic and Capillary Electrophoresis ApplicationsAdvanced Materials and Mechanics

Skin-Interfaced Microfluidic Systems that Combine Hard and Soft Materials for Demanding Applications in Sweat Capture and Analysis

Choi, Jungil, Chen, Shulin, Deng, Yujun, Xue, Yeguang, Reeder, Jonathan T., Franklin, Daniel, Oh, Yong Suk, Model, Jeffrey B. +5 more·2021·Advanced Healthcare Materials

Abstract

Eccrine sweat contains a rich blend of electrolytes, metabolites, proteins, metal ions, and other biomarkers. Changes in the concentrations of these chemical species can indicate alterations in hydration status and they can also reflect health conditions such as cystic fibrosis, schizophrenia, and depression. Recent advances in soft, skin-interfaced microfluidic systems enable real-time measurement of local sweat loss and sweat biomarker concentrations, with a wide range of applications in healthcare. Uses in certain contexts involve, however, physical impacts on the body that can dynamically deform these platforms, with adverse effects on measurement reliability. The work presented here overcomes this limitation through the use of microfluidic structures constructed in relatively high modulus polymers, and designed in geometries that offer soft, system level mechanics when embedded low modulus elastomers. Analytical models and finite element analysis quantitatively define the relevant mechanics of these systems, and serve as the basis for layouts optimized to allow robust operation in demanding, rugged scenarios such as those encountered in football, while preserving mechanical stretchability for comfortable, water-tight bonding to the skin. Benchtop testing and on-body field studies of measurements of sweat loss and chloride concentration under imposed mechanical stresses and impacts demonstrate the key features of these platforms.

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Crossref · 10.1002/adhm.202000722

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  • The Rogers group found that wearable colorimetric/fluorometric microfluidics were a suitable platform for various sweat biosensing, such as sweat rate, electrolytes, pH, vitamin C, lactate, glucose, creatinine, ammonia and ethanol.

    “For instance, the Rogers group found that wearable colorimetric/fluorometric microfluidics were a suitable platform for various sweat biosensing, such as sweat rate [132], electrolytes [133], pH [134], vitamin C [135], lactate [136], glucose [136], creatinine [132] and, ammonia and ethanol [137].”

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Authors
Choi, J., Chen, S., Deng, Y., Xue, Y., Reeder, J. T., Franklin, D., Oh, Y. S., Model, J. B., Aranyosi, A. J., Lee, S. P., Ghaffari, R., Huang, Y., & Rogers, J. A.
Affiliations
  • Kookmin University (KR)
  • Northwestern University (US)
Corresponding author
Rogers, John A.
Venue
Advanced Healthcare Materials
Publisher
Wiley
Published
2020-09-29
Volume
10
Issue
4
Pages
e2000722-e2000722
ISSN
  • 2192-2640 (ISSN-L)
  • 2192-2659
OpenAlex
W3090380082
Cited by
67
References
20
Citations by year
2026: 4 · 2025: 10 · 2024: 14 · 2023: 11 · 2022: 16 · 2021: 11 · 2020: 1
FWCI
3.06
Type
journal article
Language
en
Open access
closed
Locations
  • Advanced Healthcare Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Materials Research Science and Engineering Center, Harvard University (DMR‐1720139)
  • National Research Foundation of Korea
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
  • Physical Sciences › Engineering › Biomedical Engineering › Microfluidic and Capillary Electrophoresis Applications
  • Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
Keywords
sweat analysis, eccrine sweat, sweat biomarkers, chloride concentration, hydration status, stretchability, elastomers, impact resistance, finite element analysis, wearable sensors
MeSH terms
Electrolytes, Skin, Sweat, Reproducibility of Results, Microfluidics

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